Academic literature on the topic 'Shimen Reservoir'
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Journal articles on the topic "Shimen Reservoir"
1
Chen, Li-Yu, Wen-Zhe Hsieh, and Rung-Jiun Chou. "The Impact of the Construction of Large Reservoirs on the Cultural Landscape: A Case Study of the Shimen Reservoir, Taiwan." Land 10, no. 11 (October 29, 2021): 1161. http://dx.doi.org/10.3390/land10111161.
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Reservoirs are large-scale water facilities with multiple functions, such as water supply, power generation, and tourism. This paper introduces the new community and cultural landscape formed by the indigenous people, engineers, workers who left their homes, and many migrating families at the Shimen Reservoir in Taoyuan, Taiwan, as an example. We analyzed how the community value of reservoir construction contributed to the development of the landscape through fieldwork, document review, and in-depth interviews. First, the new communities created to meet the needs of the immigrants influenced the surrounding environment and shaped a particular lifestyle. Secondly, new immigrants have formed a community consensus, and changes in the diet and natural landscape have promoted local tourism and affected the function of the reservoir. This study concludes that promoting local values through autonomous community action is a sustainable approach to community development. Tourism development with its symbiotic relationship with the reservoir can meet the needs of local socio-economic and cultural development. For sustainable development, a vulnerability study based on the Shimen Reservoir tourism is necessary.
2
Hung, Cheng-Wei, and Lin-Han Chiang Hsieh. "Analysis of Factors Influencing the Trophic State of Drinking Water Reservoirs in Taiwan." Water 13, no. 22 (November 14, 2021): 3228. http://dx.doi.org/10.3390/w13223228.
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Eutrophication is an environmental pollution problem that occurs in natural water bodies. Regression analyses with interaction terms are carried out to identify the factors influencing the Shimen, Mingde, and Fongshan Reservoirs in Taiwan. The results indicate that the main factor influencing these reservoirs is total phosphorus. In the Shimen and Mingde Reservoirs, the influence of total phosphorus, when interacting with other factors, on water quality trophic state is more serious than that of total phosphorus per se. This implies that the actual influence of total phosphorus on the eutrophic condition could be underestimated. Furthermore, there was no deterministic causality between climate and water quality variables. In addition, time lagged effects, or the influence of their interaction with other variables, were considered separately in this study to further determine the actual relationships between water trophic state and influencing factors. The influencing patterns for three reservoirs are different, because the type, size, and background environment of each reservoir are different. This is as expected, since it is difficult to predict eutrophication in reservoirs with a universal index or equation. However, the multiple linear regression model used in this study could be a suitable quick-to-use, case-by-case model option for this problem.
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Liou, Yuei-An, Tai-Sheng Wang, and Hai-Po Chan. "Impacts of Pond Change on the Regional Sustainability of Water Resources in Taoyuan, Taiwan." Advances in Meteorology 2013 (2013): 1–6. http://dx.doi.org/10.1155/2013/243456.
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Taoyuan tableland faces the increasing water demand associated with the expansion of industrialization and urbanization. The county currently relies on the Shihmen Reservoir as the single water supply system. It will be of great concern in the shortage of water resources. This study aims to explore the impact of changes in farm ponds on the regional agricultural environment in Taoyuan County with multiyear (1993, 2003, and 2010) SPOT satellite imagery. Results show that farm ponds have decreased by 10.55 million m2from 1993 to 2010, and the existing farm ponds were 18.80 million m2in 2010, equivalent to the irrigation water of 21.10~31.65 million m3(tons) and 37.61~56.41 million m3(tons), respectively. The existing farm ponds are able to provide the water supply for 1.88~2.82 thousand hectares of agricultural land, accounting for 6.70%~10.50% of total agricultural area of Taoyuan County. Corresponding to the government’s promotion policy (2012) on activating fallow land, if we redeploy the existing farm ponds for activating fallow fields, it will lessen the water supply burden of Shimen Reservoir. Thus, farm ponds remain the significant water facilities. For the sustainable agriculture, farm ponds shall be classified and cherished as a public asset for the future development.
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Yang, Jun-He, Ching-Hsue Cheng, and Chia-Pan Chan. "A Time-Series Water Level Forecasting Model Based on Imputation and Variable Selection Method." Computational Intelligence and Neuroscience 2017 (2017): 1–11. http://dx.doi.org/10.1155/2017/8734214.
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Reservoirs are important for households and impact the national economy. This paper proposed a time-series forecasting model based on estimating a missing value followed by variable selection to forecast the reservoir’s water level. This study collected data from the Taiwan Shimen Reservoir as well as daily atmospheric data from 2008 to 2015. The two datasets are concatenated into an integrated dataset based on ordering of the data as a research dataset. The proposed time-series forecasting model summarily has three foci. First, this study uses five imputation methods to directly delete the missing value. Second, we identified the key variable via factor analysis and then deleted the unimportant variables sequentially via the variable selection method. Finally, the proposed model uses a Random Forest to build the forecasting model of the reservoir’s water level. This was done to compare with the listing method under the forecasting error. These experimental results indicate that the Random Forest forecasting model when applied to variable selection with full variables has better forecasting performance than the listing model. In addition, this experiment shows that the proposed variable selection can help determine five forecast methods used here to improve the forecasting capability.
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Zhang, Di. "Numerical Simulation Analysis for Foundation Settlement Sensitivity on LiShuiGou Aqueduct of ShiMen Reservoir." Applied Mechanics and Materials 71-78 (July 2011): 1601–4. http://dx.doi.org/10.4028/www.scientific.net/amm.71-78.1601.
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The foundation of LiShuiGou Aqueduct of ShiMen Reservoir is composed of long-short and large diameter piles, with great diameter and length differences between these new and old piles. Numerical simulation of the FEM software ADINA and the orthogonal experimental design theory are applied to explore the sensitivity of long-short pile foundation settlement, under different pile length, pile diameter, pile space, and soil constitutive model, with foundation settlement as the evaluation index. The results show that the descending order of the sensitivity of four factors is: pile length > pile diameter > pile space > soil constitutive mode. Some scientific and rational approaches and basis are consequently provided to explore the most effective reinforcement measures and design method for long-short and large diameter piles.
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Huang, Cheng-Chia, Yong G. Lai, Jihn-Sung Lai, and Yih-Chi Tan. "Field and Numerical Modeling Study of Turbidity Current in Shimen Reservoir during Typhoon Events." Journal of Hydraulic Engineering 145, no. 5 (May 2019): 05019003. http://dx.doi.org/10.1061/(asce)hy.1943-7900.0001590.
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Lai, J. S., and F. Tsai. "VERIFICATION AND RISK ASSESSMENT FOR LANDSLIDES IN THE SHIMEN RESERVOIR WATERSHED OF TAIWAN USING SPATIAL ANALYSIS AND DATA MINING." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XXXIX-B2 (July 25, 2012): 67–70. http://dx.doi.org/10.5194/isprsarchives-xxxix-b2-67-2012.
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Lin, Tzu-Hui. "Ponds of landuse in Yangmei District and Pingzhen District, Taoyuan City, Taiwan." Abstracts of the ICA 1 (July 15, 2019): 1. http://dx.doi.org/10.5194/ica-abs-1-218-2019.
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<p><strong>Abstract.</strong> The purpose of this study is to explore the land use of the pond in Taoyuan where located in north Taiwan. Apply ponds to gather water to irrigate the paddy field is a special landscape in this area. In this study, six maps from 1921 to 2015 were selected to digitize the change of the landuse, and intersection, erase analysis functions of GIS were used to show the growth and decline process of ponds, combined with literature analysis to discuss the background of the landuse development. The results reveal that from 1921 to 1989, 91% ponds were converted to paddy field. In 1989 to 1993, only 68% paddy fields and 30% settlements exist. The reasons for the conversion of ponds to paddy field were the construction of Shimen Reservoir in that time led to decline people’s willingness to use the pond to irrigate; the reason for the increase in settlements was the increase in population. This study proved that the growth and decline of pond was absolutely related to human interaction, and has an absolute impact on agricultural use in all days.</p>
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Huang, Chien-Lin, Nien-Sheng Hsu, Chih-Chiang Wei, and Chun-Wen Lo. "Using Artificial Intelligence to Retrieve the Optimal Parameters and Structures of Adaptive Network-Based Fuzzy Inference System for Typhoon Precipitation Forecast Modeling." Advances in Meteorology 2015 (2015): 1–22. http://dx.doi.org/10.1155/2015/472523.
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This study aims to construct a typhoon precipitation forecast model providing forecasts one to six hours in advance using optimal model parameters and structures retrieved from a combination of the adaptive network-based fuzzy inference system (ANFIS) and artificial intelligence. To enhance the accuracy of the precipitation forecast, two structures were then used to establish the precipitation forecast model for a specific lead-time: a single-model structure and a dual-model hybrid structure where the forecast models of higher and lower precipitation were integrated. In order to rapidly, automatically, and accurately retrieve the optimal parameters and structures of the ANFIS-based precipitation forecast model, a tabu search was applied to identify the adjacent radius in subtractive clustering when constructing the ANFIS structure. The coupled structure was also employed to establish a precipitation forecast model across short and long lead-times in order to improve the accuracy of long-term precipitation forecasts. The study area is the Shimen Reservoir, and the analyzed period is from 2001 to 2009. Results showed that the optimal initial ANFIS parameters selected by the tabu search, combined with the dual-model hybrid method and the coupled structure, provided the favors in computation efficiency and high-reliability predictions in typhoon precipitation forecasts regarding short to long lead-time forecasting horizons.
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Tseng, Chao-Heng, Ling-Ling Chen, Hsing-Cheng Hsi, and Meng-Chu Lee. "Modeling of exposure to mercury in different environmental media over a 30-year period: A case study of Shimen reservoir, northern Taiwan." Human and Ecological Risk Assessment: An International Journal 26, no. 5 (March 1, 2019): 1379–90. http://dx.doi.org/10.1080/10807039.2019.1579047.
Full textDissertations / Theses on the topic "Shimen Reservoir"
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Chen, Wei-Hao, and 陳韋豪. "Study on Sediment Bypassing of Shimen Reservoir." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/82444762865856971223.
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碩士國立交通大學
土木工程學系
101
Shimen Reservoir with the function of water supply contributes to the north of Taiwan enormously. Nowadays, the problem of sediment deposition in Shimen Reservoir is more and more seriously. It becomes more important to deal with the deposition efficiently. Recently, there have been many research about sediment bypassing in Shimen Reservoir. There are three alternative cases about sediment bypassing, which are C1 case(with extension tube in Dawanping), D2 modified case(in Amouping) and C1(with extension tube)+D2 modified case. The functions of these cases which are drainage and desilting on C1 case, only drainage on D2 case, and joint operation of C1and D2 case. This study simulates sedimentation of Shimen Reservoir before and after with sediment bypassing operation with one-dimensional mobile mode tool in order to comprehend that the erosion and deposition of bed changes and the desilting efficiency of outlets. From the simulation results in this study, we can know that the erosion and deposition in the reservoir occur downstream of the bypassing tunnel. The more water discharge from sediment bypassing tunnel, the less desilting efficiency of outlets will be improve. After considering the three cases, the reductions of sediment release efficiency of existing outlets are 12.54%, 6.26%, and 11.61%, respectively. The improvement of C1case (with extension tube) is most obvious, followed by C1(with extension tube)+D2 modified case and D2 modified case.
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LI, RO-RUN, and 李若倫. "Discussion on the Image of Shimen Reservoir Scenic Area." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/h5sw2h.
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碩士開南大學
觀光運輸學院碩士在職專班
106
The Shihmen Reservoir Scenic Area is an old tourist attraction in the Taoyuan area. It has been completed more than 50 years since its completion. However, compared with other cities and counties and Taoyuan itself, it is no longer the primary choice for tourist destinations. In the early stages of completion, whether it is domestic or domestic, Even overseas tourists will visit the Shihmen Reservoir, but now the elegance has receded. Researchers have grown up in Taoyuan since childhood. Although they have not experienced the heyday of Shihmen Reservoir, they often visit their families and visit Shihmen Reservoir. Currently, the Taoyuan Municipal Government is planning to inject funds for the Shimen Reservoir and Dahanxi River Basin planning. It is expected that the Shimen Reservoir and the surrounding areas will be The area plans to become a recreational attraction for sports tourism and combines the methods of ecological conservation to adopt low-carbon tourism. We hope that this policy can promote the reproduction of the Shihmen Reservoir. This study discusses how Shimen Reservoir now recovers from the tourism lifecycle theory. What kind of tourist image should you use to attract tourists? Interviews with the public sector, local businesses, local residents, and tourists were conducted in this study. Non-public sector respondents considered that the current municipal government's marketing campaigns for large-scale events and sightseeing spots were insufficient. Department related units reference.
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Lee, Chia-Yun, and 李嘉芸. "A Study on the Preservation Value of Official Residence in Shimen Reservoir." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/87029932964830719759.
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碩士中原大學
建築研究所
105
Shimen Reservoir public housing area for the study, the dormitory area is located in Longtan Township good, formerly known as eleven Zhuang, from Shimen Reservoir about 3 km away. The early eleven Hakka people for the residential area, the Japanese during the construction of this light railways, to facilitate the delivery of crops, which is the first 11 Zhuang early modern development. During the Japanese occupation, in order to solve the problem of irrigation, the Japanese built Taoyuan to build the Shimen Reservoir, but because of the Pacific War at the end of the Japanese rule, the Shimen Reservoir project was interrupted. After the Nationalist government came to Taiwan, continuing to do the basic investigation, until 1953 and 1954, a continuous drought, only to accelerate the planning of the construction of reservoirs. Shimen Reservoir began construction in 1958, Taiwan invited US engineering company as a special construction consultant, completed in 1964 Shimen Reservoir, in the construction of Shimen Reservoir, in order to allow engineers to work nearby, so in 11 areas planned Shimen Reservoir staff quarters , The dormitory area is almost the same period with the Shimen Reservoir project planning, dormitory area to meet the Shimen reservoir engineering staff with their family life function. After field investigation Shimen Reservoir dormitory area, the dormitory area of the building structure and road texture to maintain the original appearance, and most of the buildings are also in accordance with the original use of function, continuous use. The residential quarters are large tracts of garden, on both sides of the road inoculated with plants, so the whole dormitory area is green, and the military that the quality of life without space compared to Shimen reservoir dormitory area has a perfect quality of life, Also on behalf of the Government on the construction of Shimen reservoir engineering staff considerable attention. After investigation, historical review, the use of cultural assets at home and abroad to save the law to explore the preservation of Shimen Reservoir dormitory value, and Shimen Reservoir dormitory area after 52 years, the landscape texture almost exactly the same as the original design, complete preservation has become a Examples of modern public housing. Shimen Reservoir dormitory area in Taiwan has a modern symbol. Shimen Reservoir dormitory area of the current research is rather scarce, mostly to the construction of Shimen Reservoir, the background-based. This study focuses on the settlement space, architectural style, landscape texture, in order to highlight the significance of settlement preservation value. The results of this study are expected to serve as a reference for the preservation and re-use program of the Shimen Reservoir Public Dormitory Area.
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Huang, Cheng-Chia, and 黃振家. "Application of Density Current Model of Sluice Gate Operation in Shimen Reservoir." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/3ysrr5.
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博士國立臺灣大學
生物環境系統工程學研究所
106
Sedimentation has been a serious problem of Taiwan reservoirs, and the rapidly trapped sediment caused by extreme flood events has affected the storage capacity. Therefore, reservoir deposition becomes a highly-discussed topic. In Taiwan, the timing of sediment release usually happens during typhoon periods. On the other hand, the density current would be produced due to the incoming hyper-concentrated flow. Hence, grasping the movement of the density current is a focused issue. In this study, a 2-D layer-averaged density current numerical model would be applied to simulate the density current flow during typhoon periods. Firstly, the field measured data were adopted to calibrate simulation parameters and to verify the simulation results. Next, three highly correlated regression equations are developed to calculate the travel velocity, arrival time, and concentration decay rate. Furthermore, a reasonable estimation of the sediment release amount can be established based on these outcomes. Lastly, the modification of the release efficiency at the bottom outlet, and the method of reservoir operation can be presented to improve the desilting strategy in the Shimen Reservoir. Above all, the flow pattern of the density current is estimable. Accordingly, this research can be adopted to predict the flow pattern of the density current due to high consistency of this model. In conclusion, this study can combine the real-time observed data to conduct the rolling prediction and provide the approximate tendency of the density current flow, and further be the reference to the early warning beneficial to reservoir management.
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Wei, Chi-ma, and 魏綺瑪. "Scenario Projection for Local Precipitation over Shimen Reservoir Catchment Using Statistical downscaling Method." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/57989186790754882227.
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碩士國立成功大學
水利及海洋工程學系碩博士班
97
In this study, a statistical downscaling model, which is based on the outputs of GCMs as predictors, is first developed to simulate the daily rainfall over the Shiman reservoir catchment. Moreover, the potential of this downscaling model in simulating local rainfall is evaluated. Finally, the variability of projected local rainfall based on predictors for different scenarios is investigated. Data of observed station rainfall over the Shiman reservoir catchment are utilized for downscaling. In addition, the large-scale variables derived from NCEP/NCAR Reanalysis project and outputs of GCMs taken from IPCC AR4 are also required. The structure of this statistical downscaling model can be divided into two parts － classification and regression. Methods of multivariate and Support Vector Machine (SVM) are applied respectively to build up the classification and regression scheme. The results reveal that the statistical downscaling model based on two-step strategy performs better in simulating the daily rainfall over the Shiman reservoir catchment when compared with the downscaling model based on four-step strategy. Although the divergence exists in between the results of downscaling based on the outputs of GCMs, downscaling results based on MME strategy make reasonable and stable projections for daily rainfall. When compared with the downscaled rainfall based on outputs of 20C3M, a tendency of suppressive rainfall is found from the results downscaled by the projections of GCMs for A1B and B1 scenarios over the Shiman reservoir catchment.
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Chen, Yong-Yu, and 陳永彧. "Application of Satellite Image to Monitor River Suspended Sediments in Shimen Reservoir Watershed." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/37sh7a.
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碩士國立中央大學
土木工程學系
105
In facing the extreme weather, Taiwan requires adequate water quality management. The current monitoring stations in watersheds around Taiwan are fixed point measurements, not enough to represent the entire catchment area. And currently the frequency of data gathering of these monitoring stations is less than once a month, which makes the number of samples are very limited. In this study, hydrological model (SWAT) and satellite imagery (SPOT and Landsat) were used to study the turbidity of water in the upstream and reservoir areas of Shimen Reservoir channel water surface area. The prediction model of turbidity of Shimen reservoir water surface area was established by satellite imagery, and calibration and verification were carried out. SWAT was employed to identify high turbidity events and then the satellite image was utilized to estimate turbidities. Discussion of the accuracy of turbidity estimation model is provided. According to the results, the application of satellite images to estimate the turbidity of Shimen reservoir water surface area is highly feasible, with the relative error being about 30%. The turbidity estimation in the water surface of reservoir is more accurate than that in the channel water surface area. This is mainly because the area of the reservoir area is open, free from being affected by the surrounding sandbar or vegetation. The accuracy of upstream channel water surface area is limited, for the depth of the water is shallow and would be affected by the noises due to high reflection. Furthermore, if the monitoring is carried out during the drought period, it is likely to be error-prone, due to the height of the water level being less than 1 m which resulting high reflectivity and resulting misjudging high water turbidity.
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Chang, Yu-Hsuan, and 張語軒. "Investigation of Point Source and Non-point Source Pollution in Shimen Reservoir Watershed." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/6ca56z.
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碩士國立臺北科技大學
土木工程系土木與防災碩士班
106
More and more attention has been paid to the issue of water resources pollution in recent years.Such as ecosystem destruction and drinking water pollution caused by eutrophication of rivers and reservoir.Water pollution can be divided into point source pollution and non-point source pollution.The difference is the point source pollution has any single identifiable source of pollution from which pollutants are discharged into the river.Such as domestic sewage and industrial wastewater.And the non-point source pollution occurs as a result of runoff when rain moves over and through the ground. This study sample point source pollution and non-point source pollution as subjects in Shimen Reservoir watershed.Investigate the water quality of different land-use areas such as Dahan River, Sanmin River, peach farmland, settlements.Testing the contaminant concentration of water quality parameters such as suspended solids, ammonia nitrogen, biochemical oxygen demand, chemical oxygen demand, total phosphorus, etc.And analysis with sampling timing, accumulated rainfall, land use, etc.Further understand the contamination characteristics, the implications of water quality parameters, and the correlation of sampling conditions of each sampling point. Research found that non-point source pollution is the main factor affecting the surface water quality.And will increase the pollution concentration as the accumulated rainfall increases.Especially in terms of biochemical oxygen demand and nutrients that more than point source pollution.The concentration of Dahan Rivers suspended solid even reached to 1300mg/L when the accumulated rainfall reached 27mm.Ammonia can be diluted in rainy day so it is not easy to sampling its peak concentration. Vendors nearby Baiji Tunnel and Settlements that have not household connection-pipes have adverse effects on water quality.The concentration of restaurants suspended solid and BOD have obvious effect in the outflow.The quality of effluent produced in residences will change significantly with daily life.Fertilizers on farms cause high levels of nutrients in non-point source pollution.And due to the bare open space and topographical factors, the soil is easily washed away.
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Chung, Yi-Ching, and 鐘意晴. "Probe into the Regional Landslide Susceptibility Analysis-a case study in the Shimen Reservoir Catchment Area." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/e5v263.
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碩士國立中央大學
地球物理研究所
97
This study uses data set from the “Geological Investigation, Landslide-Debris Flow Investigation and their Susceptibility Evaluation on Watershed” project of the Central Geological Survey, Taiwan (CGS), and aims to improve the susceptibility model developed in the project, by using different rainfall factors and sampling schemes. All the causative factors used in the project are selected in this study; including lithology, NDVI before Aere event, slope roughness, tangential curvature, total slope height, relative slope height, wetness index and fault distance. The final selection of trigger factors is maximum rainfall intensity and total rainfall of the Aere event. Landslide inventories interpreted from SOPT images before and after Aere typhoon event and those of the Matsa typhoon event, were checked by examining rectified aerial photographs, topographic maps, and in the field, so as to establish the event-based landslide inventories. The Aere inventory is used for establishment of susceptibility model and the Matsa inventory for validation. We use different sampling schemes in the study and choose logistic regression as the main analytical method to establish the susceptibility model. We wish to select a set of sample that can expand the range of rainfall values and also raise the weights of the trigger factors. An extra data set from landslide group is selected and is put into the non-landslide group try setting the rainfall value to critical rainfall. Besides the use of logistic regression for establish susceptibility model, we also adopt discriminant analysis and fuzzy neural network in the study. The results show that AUCs of the success rate curves for logistic regression, discriminant analysis, and fuzzy neural network are 0.8579, 0.8257 and 0.8771, respectively; all show good performance. The results are validated by the data set from of the Matsa typhoon event. The results of validation show that AUCs of the prediction rate curves are 0.7867, 0.7264 and 0.7726, respectively; it is also satisfactory. Although the fuzzy neural network has the highest AUC in establishing model, it is not the highest in validation; this phenomenon may be a kind of over-training. The discriminant analysis obtained the lowest AUC in establishing model and validation. The result of logistic regression is not the best one in establishing the model, but it is the best in validation. Therefore, the logistic regression is the most effective and stable method in establishing the regional landslide prediction model.
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Li, Ying-Lin, and 李盈林. "Application of Mining Engineering Technology to Remove the Reservoir sediments for Sustainable Management of Shimen Dam,Taiwan." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/27817591436257710067.
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碩士國立成功大學
資源工程學系碩博士班
94
An underground mining method was considered applying to remove the sedimentary sludge in Shimen Dam, northern Taiwan, which was constructed 40 years and right now, the turbidity of reservoir water always increased sharply after every times of heavy rainfall. The sedimentary sludge was seemed as a clay deposit under the water. A mineral prospecting and continuous underground mining operation can dig out most of the sludge by shafted tunnel from upper water level into beneath the clay deposit. The cost of this method are estimated NT$ 477 per cubic meter based on a scale of 14 years removing 50 million tons of clay. Not only the quality of mining product is suitable for the raw material of lightweight aggregate, but also and the quantity of mining rate can over the sedimentary rate of reservoir sludge. It would be both of prolong 15 years of reservoir life and create NT＄120 billion of economic value. And at last, it can be seen sustainable of this Shimen Reservoir by this method.
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Jhang, Jia-yuan, and 張嘉元. "Filter clogging in Pin-Chen water treatment plant during water intake from intake well in Shimen reservoir." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/87928286005488058195.
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碩士國立中央大學
環境工程研究所
100
Due to extreme high turbidity during typhoons or heavy rains, which resulted in difficulties in potable water treatment, the water intake well to draw water from upper levels of the reservoir was built in the Shihmen reservoir. After drawing water from the intake well, it was found that the rapid sand filter was severely clogged, the head loss increased dramatically, and the filtration run-time was seriously shortened. The objectives of this study were first to investigate filter clogging in Ping-Jan Water Treatment Plant while intake water from the water intake well by water quality analysis of different water intake locations, filter-bed analysis, and pilot study. It was shown that the water qualities from different water intake locations were similar; thus, the water quality was not the cause for the clogging. From the floc retention analysis, scanning microscopy, and energy-dispersive X-ray spectroscopy of filter media, it was found that the particles only deposited on the surface of filter while intake water from the water intake well. Bubbles observed in coagulation tanks on-site and in coagulation, sedimentation, and filtration units of the pilot, it was determined that the air-binding is responsible of the filter clogging.
Book chapters on the topic "Shimen Reservoir"
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Lu, Chi-Chang, and Po-Hsien Lin. "A Study of Producing Ceramic Glaze Utilizing Shihmen Reservoir Silt." In Lecture Notes in Computer Science, 201–10. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-21660-2_23.
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Lee, Chin Yu. "Hydrologic budget of the Shihmen reservoir watershed." In Stochastic Hydraulics 2000, 803–8. CRC Press, 2020. http://dx.doi.org/10.1201/9781003078630-104.
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Zhang, Wanchang, and Yanju Li. "Study on Factors and Characteristics of Qingshuihe Formation in Shinan Area, Junggar Basin." In Advances in Transdisciplinary Engineering. IOS Press, 2022. http://dx.doi.org/10.3233/atde220385.
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Reservoir characteristics and influences by diagenesis and sedimentary environment of the Qingshuihe clastic formation of Shinan area, Junggar Basin, are studied in this paper by SEM, casting thin sections, X-ray diffraction, combining geology logging and well logging data, providing a theoretical guide for further exploration and development. The results show that the Qingshuihe Formation in the region of interest was developed in braided river front subfacies, of which the lithology includes grey medium-coarse-grained sandstone and medium-fine-grained sandstone with which some grey siltstone and grey silty mudstone were mingled. In the process of diagenesis, compaction caused about 60% of the primary pore loss, and cementation caused about 20% of the primary pore loss. The physical properties of Qingshuihe Formation are principally controlled by sedimentary environment, on which the influence of diagenesis is small.
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Zhang, Yaoxin, Yafei Jia, Keh-Chia Yeh, and Chung-Ta Liao. "Erosion Control at Downstream of Reservoir Using In-stream Weirs." In Hydraulic Structures - Impact on River Flow and Sediment Transport-Dimensioning [Working Title]. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.108169.
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As low-head hydraulic structures, instream weirs are built across rivers to control the upstream water surface elevation and the downstream flow conditions. This chapter presents a study of erosion control using instream weirs at downstream of a reservoir; JiJi Weir was built across the longest river in Taiwan, Chuoshui Creek, a mountainous river with steep slopes. Due to the easy-to-be-eroded fine lithology layers of mud, shiver, and sandstones on channel bed, the downstream of JiJi Weir had suffered from severe channel incision and head-cut development problems, which greatly threatens the integrity of the dam. To protect the JiJi Weir and its downstream channel from serious channel erosions, the Water Resources Agency (WRA) of Taiwan proposed erosion control plans that multiple instream weir structures were to be installed along the downstream channel of JiJi Weir. A three-dimensional (3D) numerical model, CCHE3D model with capabilities of simulating bedrock erosions, was used to evaluate those erosion control plans and thus explore for the optimal design.
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"Multispecies and Watershed Approaches to Freshwater Fish Conservation." In Multispecies and Watershed Approaches to Freshwater Fish Conservation, edited by Kevin B. Mayes, Gene R. Wilde, Monica E. McGarrity, Brad D. Wolaver, and Todd G. Caldwell. American Fisheries Society, 2019. http://dx.doi.org/10.47886/9781934874578.ch14.
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<em>Abstract</em>.—The Brazos River crosses eight ecoregions on its journey from New Mexico through the heart of Texas to the Gulf of Mexico. This diverse stream ecosystem supports at least 85 fish species, many of which—including two endangered, migratory, pelagic broadcast-spawning cyprinids, Smalleye Shiner <em>Notropis buccula </em>and Sharpnose Shiner <em>N. oxyrhynchus</em>—have life histories that track the natural flow regime. These two shiners were listed as endangered in part because of severe range reductions that left each with one viable population in the upper Brazos River. Given their short life span, a single adverse event, such as a persistent drought of two consecutive years, could lead to extinction. This concern was nearly realized in 2011 when a record drought and heatwave resulted in complete reproductive failure of these species, which led to rescue efforts for imperiled shiners confined to drying pools. Seventeen major reservoirs control streamflow and create distinct, disconnected fragments in the Brazos River basin. Long-term ecological studies have provided a strong science foundation for guiding water and environmental flow management and watershed conservation. Implementation of both upland and riparian best management practices in the upper Brazos River watershed, including management of invasive saltcedar <em>Tamarix </em>spp., seeks to improve habitat for fish and wildlife. Hydrological monitoring and modeling is being conducted to evaluate the potential for saltcedar control to improve base flows. Identification of stream reaches most threatened by drying and where aquifer pumping may reduce groundwater inflows to streams is the focus of ongoing research on groundwater–surface water relationships. Fish passage barriers hinder successful recruitment, migration, and recolonization of prairie fishes. Removal and mitigation of barriers, as appropriate, will be critical to restoring ecological functions and connectivity required for migratory fishes. Research on propagation and repatriation of prairie fishes is needed to inform conservation and recovery efforts. A watershed-scale, multidisciplinary approach coordinated across borders and among entities is critical to ensure conservation efforts result in the persistence of native fishes in the Great Plains, including the Brazos River.
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van den Dool, Huug. "Conclusion." In Empirical Methods in Short-Term Climate Prediction. Oxford University Press, 2006. http://dx.doi.org/10.1093/oso/9780199202782.003.0017.
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In this book we have reviewed empirical methods in short-term climate prediction. We devoted a whole chapter to the design of two of these methods, Empirical Wave Propagation (EWP, Chapter 3) and Constructed Analogue (CA Chapter 7). Other methods of empirical prediction were listed in Chapter 8, with brief descriptions and examples and references. One chapter is devoted to EOFs, as such a diagnostic topic, but widely used in both prediction and diagnostics, and thoroughly debated for a few decades. Two brief chapters, written in support of the subsequent chapter, Teleconnections (Chapter 4), should make the discussion on EOFs more interesting, and the topic of effective degrees of freedom (Chapter 6) is indispensable when one wants to understand why and when natural analogues would work (or not), or how an analogue is constructed, or how any method using truncation works. Most chapters can be read largely in isolation, but connections can be made of course between chapters. EWP is claimed to be useful, if not essential, in understanding teleconnections. Dispersion experiments, featuring day-by-day time-scales, link the CA and EWP methods. Examples of El Nino boreal winter behavior can be found in (a) the examples of EOFs on global SST and 500 mb streamfunction (Chapter 5), (b) specification of surface weather from 500 mb streamfunction (Chapter 7), and (c) the ENSO correlation and compositing approach (Chapter 8). The noble pursuit of knowledge may have been as important in the choice of some material as any immediate prediction application. Chapter 9 is different, less research oriented, and more an eyewitness description of what goes on in the making of a seasonal prediction. This eyewitness account style spills over into Chapter 8 here and there, because in order to understand why certain methods have survived to this day some practicalities have to be understood. The closeness to real-time prediction throughout the book creates a sense of application. However, the application in this book does not go beyond the making of the forecast itself; we completely shied away from such topics as a cost/benefit analysis or decision-making process by, for example, a climate sensitive potato farmer or reservoir operator.
Conference papers on the topic "Shimen Reservoir"
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Lee, P. S., and G. J. Y. You. "The Risk Analysis of Long Term Impact to Reservoir under Extreme Hydrologic Events—Shihmen Reservoir, a Case Study." In World Environmental and Water Resources Congress 2011. Reston, VA: American Society of Civil Engineers, 2011. http://dx.doi.org/10.1061/41173(414)128.
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Su, Xiaocheng. "Application of strength reduction method in shiran reservoir reinforcement project." In 2017 International Conference on Algorithms, Methodology, Models and Applications in Emerging Technologies (ICAMMAET). IEEE, 2017. http://dx.doi.org/10.1109/icammaet.2017.8186628.
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Lai, Yong G., and Kuowei Wu. "Modeling of Turbidity Current and Evaluation of Diversion Plans at Shihmen Reservoir in Taiwan." In World Environmental and Water Resources Congress 2013. Reston, VA: American Society of Civil Engineers, 2013. http://dx.doi.org/10.1061/9780784412947.171.
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Younes, Dania Wayel, Osama Mohamed Keshtta, Khaled Husain AlAmeri, and Yann Bigno. "Innovative Approach to Develop an Old Complex Reservoir Bearing Multi-Billion Barrels of Reserves in a Middle-East Carbonate Field." In ADIPEC. SPE, 2022. http://dx.doi.org/10.2118/211325-ms.
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Abstract This paper showcases the development approach recently adopted in an offshore reservoir bearing multi billion stock tank barrels of oil-in-place that solely depended on natural depletion starting from the year of 1962 until the introduction of the crestal gas injection mechanism in 1994, yet less than three percent of this potential has so far been recovered! This low recovery can be justified by the very complex nature of this reservoir varying from the expected highly fractured crest to the very poor characteristics of the matrix spreading towards the down flank, in addition to the high competition between this as a lazy reservoir and the other high potential reservoirs to produce against a high-pressure system of surface facilities. Even though the very first oil shipment in 1962 from this field was exported from this reservoir, all these surface and subsurface bottlenecks have been making its development so challenging that it had to be put to a halt yielding a hydrocarbon recovery that is less than three percent of its potential in the past 60 years. A new development approach was adopted in this reservoir introducing the line drive water injection mechanism as a basis for all future development, in addition to introducing artificial means in order to overcome the high-pressure system of the existing surface facilities. Several uncertainties were encountered linked to this type of development plan for this type of complex reservoir such as well spacing (OP/WI), well architect (short horizontal vs. MRC/ERD vs. deviated), well completion, well productivity/eruptivity and for water injection as it is the first time to inject water in this type of reservoirs water injectivity, water quality, scale risk..etc. So, a dedicated de-risking plan was introduced & implemented to try to overcome and mitigate all these challenges and risks before full implementation of the proposed development plan. The line drive pilot (OP/WI) plan was implemented mirroring the future long term development plan for the main purpose of proving the economical feasibility of the line drive recovery mechanism in such a reservoir while maximizing the acquisition of associated static and dynamic monitoring data. This will ultimately appraise and feed into the long-term development plan set for this reservoir while paving the way for it to reach its true potential and meet its future production target. This paper discusses both the de-risking pilot design and its results, which overall, support the implementation of this development plan. The pilot was started with the oil producer since Aug-2020 followed by the water injection since Mar-2021.
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Furghieri Bylaardt Caldas, Priscila, Jonathan Snatic, and Kurt Kronenberger. "Quality Isotope Analysis at the Wellsite: Two Case Studies that Validate GC-C-IRMS Mud Gas Isotope Logging for Deepwater Exploration and Development." In SPE Annual Technical Conference and Exhibition. SPE, 2022. http://dx.doi.org/10.2118/210384-ms.
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Abstract Geochemical analysis of gases produced during the drilling process is a common study on oil and gas exploration and development wells. This process typically includes the use of gas sample containers or other vessels that allow for single point samples to be collected for shipment to an offsite laboratory. Laboratories use high precision devices to obtain valuable information for reservoir characterization including stable carbon isotope ratios. In recent years there have been efforts to provide similar analyses during the drilling process, using ruggedized equipment suitable for wellsite deployment. This paper demonstrates that a Gas Chromatograph-Combustion-Isotope Ratio Mass Spectrometer (GC-C-IRMS) analyzer, using similar technology to what is most widespread in offsite laboratories (Dashti et al, 2018), can be successfully deployed to the rig site. This type of advanced gas analysis, commonly known as Mud Gas Isotope Logging (MGIL), provides continuous sampling of stable carbon isotopes of methane (δ13C1), ethane (δ13C2), and propane (δ13C3). The service, performed with a GC-C-IRMS analyzer, was proven and validated for an operator through two case studies. 98 The first case compares real time data with discrete gas sample tubes analyzed in an offsite laboratory. It shows how accurate results are possible, even with the presence of artificial gases generated by drill bit metamorphism (DBM) (Wenger et al, 2009). This example also demonstrates how the service enabled immediate analysis for operational decisions by indicating the presence of biodegraded thermogenic fluid. The second case study demonstrates how this wellsite service could corroborate the geological prognosis in a complex field influenced by salt tectonics. In this basin an upthrown reservoir changed the typical behavior observed in conventional wells of increased oil maturity with depth. Stable carbon isotope readings obtained in real time, integrated with cuttings analysis, indicated the presence of out of section lithology. This information allowed for estimating the thermogenic fluid maturity of reservoirs and diagnosis of geological formations that were out of sequence in terms of age (uplifted).
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Shrivastava, Saurabh, and Bahgat Sammakia. "Transient Mixed-Convection With Applications to Cooling of Biomaterials." In ASME 2005 Pacific Rim Technical Conference and Exhibition on Integration and Packaging of MEMS, NEMS, and Electronic Systems collocated with the ASME 2005 Heat Transfer Summer Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/ipack2005-73235.
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2-Dimensional transient mixed-convection in a horizontal rectangular enclosed cavity heated from a lower solid block is numerically studied. The enclosure simulates the thermal reservoir for the storage and shipment of biomaterials. The lower solid block containing the thermal biomass that has adiabatic sides and bottom wall, is coupled along the top wall with a hollow cavity of aspect ratio (H/L = 0.5), whose side and top walls are assumed to be surrounded by a phase change material and has been assigned constant temperature of 273K. Initially, the temperature of the biomaterials is raised to 283K; the upper cavity is filled with quiescent air and uniform temperature at time zero. Laminar airflow is assumed with a fan in middle of the cavity. The basic characteristics and flow structures during the transition of natural-convection-dominated flow to forced-convection-dominated flow are determined. The problem is solved for the range of mixed-convection regime and the fluid flow structure and heat transfer is found to be dependent on mixed-convection as determined by the buoyancy parameter Gr/Re2. As anticipated, the forced-convection-dominated flow is found to be more effective in cooling of the thermal biomass than the natural-convection-dominated flow. This study shows that using the assisted forced convection results in an increase in the cooling performance of the biomaterial container in the natural-convection-dominated type mixed-convection flow. Examining the area averaged Surface Nusselt number along the coupled wall with time and the rate of heat transfer from the thermal biomass during the Quasi-steady stage validates the above hypothesis.
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Safonov, Ilia, Anton Kornilov, and Iryna Reimers. "Rendering Semisynthetic FIB-SEM Images of Rock Samples." In 31th International Conference on Computer Graphics and Vision. Keldysh Institute of Applied Mathematics, 2021. http://dx.doi.org/10.20948/graphicon-2021-3027-855-863.
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Digital rock analysis is a prospective approach to estimate properties of oil and gas reservoirs. This concept implies constructing a 3D digital twin of a rock sample. Focused Ion Beam - Scanning Electron Microscope (FIB-SEM) allows to obtain a 3D image of a sample at nanoscale. One of the main specific features of FIB-SEM images in case of porous media is pore-back (or shine-through) effect. Since pores are transparent, their back side is visible in the current slice, whereas, in fact, it locates in the following ones. A precise segmentation of pores is a challenging problem. Absence of annotated ground truth complicates fine-tuning the algorithms for processing of FIB-SEM data and prevents successful application of machine- learning-based methods, which require a huge training set. Recently, several synthetic FIB- SEM images based on stochastic structures were created. However, those images strongly differ from images of real samples. We propose fast approaches to render semisynthetic FIB- SEM images, which imply that intensities of voxels of mineral matrix in a milling plane, as well as geometry of pore space, are borrowed from an image of rock sample saturated by epoxy. Intensities of voxels in pores depend on the distance from milling plane to the given voxel along a ray directed at an angle equal to the angle between FIB and SEM columns. The proposed method allows to create very realistic FIB-SEM images of rock samples with precise ground truth. Also, it opens the door for numerical estimation of plenty of algorithms for processing FIB-SEM data.