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Artykuły w czasopismach na temat „Large scale open pit slope”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 2 lutego 2022

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1

Bazarnik, Miroslawa. "Slope stability monitoring in open pit mines using 3D terrestrial laser scanning." E3S Web of Conferences 66 (2018): 01020. http://dx.doi.org/10.1051/e3sconf/20186601020.

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In open pit mines the aspect of preventing and forecasting the threat of landslides and rock falls is crucial issue because of the significant consequences that instabilities may have. Systematic slope stability monitoring is necessary to ensure safe and continuous mining operations. The development of innovative technologies, such as 3D laser scanning, opens up new possibilities, especially in the case of large and hard-to-reach areas, such as open pit mines. Terrestrial laser scanners (TLS) provide fast, efficient, detailed, and accurate three-dimensional data. The article discusses the use

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Azzuhry, Yahdi. "STABILITY ANALYSIS AND FAILURE MECHANISMS OF OPEN PIT ROCK SLOPE." Journal of the Civil Engineering Forum 2, no. 3 (August 16, 2017): 255. http://dx.doi.org/10.22146/jcef.26589.

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Rock mass in nature tend to be unideal, for it is heterogeneous, anisotropic and has discontinuity. The discontinuity makes anisotropic strength and stress in the rock mass, and also controls the changing of the elastic properties of rock mass. This condition results to disruptions in the rock mass strength balance, and finally drives the slopes to collapse. This study aims to determine the slope failure mechanisms in the area of case study, as well as its variations based on the Rock Mass Rating (RMR), Geological Strength Index (GSI), Slope Mass Rating (SMR), kinematic analysis, numerical ana

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Wang, Shuhong, Chengjin Zhu, Pengyu Wang, and Zishan Zhang. "Stability Analysis of Slope with Multiple Sliding Surfaces Based on Dynamic Strength-Reduction DDA Method." Advances in Civil Engineering 2019 (November 11, 2019): 1–12. http://dx.doi.org/10.1155/2019/2183732.

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The present study aims to elucidate the problem of a rock mass structural plane with a range of damage degrees and the numerical model selection for analysis of a slope with multiple sliding surfaces. Based on the relative displacement between blocks, the dynamic strength reduction-discontinuous deformation analysis (hereinafter referred to as DSR-DDA) method is proposed for studying slopes with multiple sliding surfaces. The slope-slider classic case was used to test the displacement threshold. The model was applied to the stability analysis of multiple sliding surfaces of a high rock slope i

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4

Cała, Marek, Katarzyna Cyran, Joanna Jakóbczyk, and Michał Kowalski. "The Challenges of Open-Pit Mining in the Vicinity of the Salt Dome (Bełchatów Lignite Deposit, Poland)." Energies 13, no. 8 (April 14, 2020): 1913. http://dx.doi.org/10.3390/en13081913.

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The extraction of the Bełchatów lignite deposit located in the vicinity of the Dębina salt dome requires careful planning that considers the influence of mining projects on the slope and salt dome stability conditions. The instability problem is directly related to horizontal and vertical displacement, as well as the complex geological and mining conditions. These conditions are very unique with regard to the co-occurrence of the salt dome and lignite deposits in the same area, as well as the large scale of the pit wall slope. Thus, predicting rock mass behavior and ensuring the safety of mini

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Tao, Zhigang, Kuiming Liu, Xuebin Cui, Xiaobing Qiao, and Xiaoming Sun. "Infrared Temperature Law and Deformation Monitoring of Layered Bedding Rock Slope under Static Load." Advances in Civil Engineering 2020 (December 19, 2020): 1–16. http://dx.doi.org/10.1155/2020/8818278.

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China is a mountainous and hilly country with frequent large-scale landslides with complicated mechanisms and serious damage. The layered rock slopes have the worst stability, undergo the most serious damage, and have been rarely investigated due to limitations of measurement methods and instruments. Taking the Nanfen open-pit iron mine as an example, a physical large-model similarity ratio test system is used to simulate the landslide remote monitoring process. The development of the sliding surface, stress-strain characteristics, and infrared law of the bedded rock slope are analyzed. Result

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6

Chunuev, I. K., Yu M. Levkin, and Zh Bolotbekov. "Determination of bench, dump and road sliding wedge technological parameters." Gornye nauki i tekhnologii = Mining Science and Technology (Russia) 6, no. 1 (April 6, 2021): 31–41. http://dx.doi.org/10.17073/2500-0632-2021-1-31-41.

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Mine surveying in mining operations is of particular importance, since all technological processes of the full life cycle of a mining enterprise and, ultimately, its competitiveness depend on the surveying quality, efficiency and reliability. Organizations independently determine the structure of mine surveying services, taking into account the methods applied and the scale of mining. To ensure safe open-pit mining of minerals, it is necessary to permanently assess and monitor the pit bench and wall rock mass condition. Misjudgement of rock physical and mechanical properties, non-observance of

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7

Long, Nguyen, Le Thi Thu Ha, Tong Si Son, and Kim Thi Thu Huong. "UAV PHOTOGRAMMETRY-BASED FOR OPEN PIT COAL MINE LARGE SCALE MAPPING, CASE STUDIES IN CAM PHA CITY, VIETNAM." Sustainable Development of Mountain Territories 12, no. 4 (December 30, 2020): 501–9. http://dx.doi.org/10.21177/1998-4502-2020-12-4-501-509.

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The use of lightweight Unmanned Aerial Vehicle with the aerial photogrammetry approach to construct the Digital Surface Model (DSM) has been effectively applied for various types of topography. However, the ability to carry out this approach for huge active open coal mines is insufficiently investigated, furthermore, the influences of topographical factors on the accuracy of DSM are ambiguous. This experiment attempts to apply the UAV method for the two active coal mines with the total area of 7.99 km2 , exploited at a range from -300 m to 300 m altitude to figure out the effect of topographic

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8

Yang, Guoxiang, Anthony K. Leung, Nengxiong Xu, Kunxiang Zhang, and Kunpeng Gao. "Three-Dimensional Physical and Numerical Modelling of Fracturing and Deformation Behaviour of Mining-Induced Rock Slopes." Applied Sciences 9, no. 7 (March 31, 2019): 1360. http://dx.doi.org/10.3390/app9071360.

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Fracturing behaviour of jointed rock mass subjected to mining can significantly affect the stability of the rock structures and rock slopes. Ore mining within an open-pit final slope would lead to large-scale strata and surface movement of the rock slope. Rock mass structure, or more specifically, the strength, spacing and distribution of rock joints, are the controlling factors that govern the failure and deformation mechanisms of the final slope. Two-dimensional (2-D) physical modelling tests have been conducted in the literature, but in general, most of them have simplified the geological c

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9

Wang, Zhenwei, Gaofeng Song, and Kuo Ding. "Study on the Ground Movement in an Open-Pit Mine in the Case of Combined Surface and Underground Mining." Advances in Materials Science and Engineering 2020 (June 9, 2020): 1–13. http://dx.doi.org/10.1155/2020/8728653.

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The combined surface and underground mining method is typically used in an open-pit mine for better production and profits. However, the improved scale of mining operations at the combined mining conditions results in even more intensive strata movement and massive ground damages. This paper assesses the progressive development of the characteristics of roof movement with the longwall face advance and its influence on the ground movement at the slope area using physical models. The identification of strata zones at the combined mining conditions is also included. The results show the following

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10

Huang, Gang-Hai, Yu-Yong Jiao, Xiu-Li Zhang, Amoussou-Coffi Adoko, and Shu-Cai Li. "Generating Irregular Models for 3D Spherical-Particle-Based Numerical Methods." Journal of Applied Mathematics 2013 (2013): 1–7. http://dx.doi.org/10.1155/2013/302680.

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The realistic representation of an irregular geological body is essential to the construction of a particle simulation model. A three-dimensional (3D) sphere generator for an irregular model (SGIM), which is based on the platform of Microsoft Foundation Classes (MFC) in VC++, is developed to accurately simulate the inherent discontinuities in geological bodies. OpenGL is employed to visualize the modeling in the SGIM. Three key functions, namely, the basic-model-setup function, the excavating function, and the cutting function, are implemented. An open-pit slope is simulated using the proposed

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11

Zou, Ping, Ximo Zhao, Zhonghua Meng, Aibing Li, Zhengyu Liu, and Wanjie Hu. "Sample Rocks Tests and Slope Stability Analysis of a Mine Waste Dump." Advances in Civil Engineering 2018 (December 27, 2018): 1–17. http://dx.doi.org/10.1155/2018/6835709.

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The safety and stability of waste dump are vital influencing factors to the mine sustainability and mine employees. Based on a real mine project in a certain open-pit mine waste dump in Tibet, the in situ test on waste rocks from waste dump, including measurements of density, water content, rock size, and natural repose angle, was conducted. Afterwards, these sample waste rocks, of which grain size is less than 5 cm, were selected for indoor large-scale shear test under natural and saturated conditions. By using some engineering methods, the physical and mechanical parameters of waste rocks la

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12

Wang, Yu, Wenkai Feng, Huajian Wang, Jianqiang Han, and Changhong Li. "Geomechanical and Acoustic Properties of Intact Granite Subjected to Freeze–Thaw Cycles during Water-Ice Phase Transformation in Beizhan’s Open Pit Mine Slope, Xinjiang, China." Water 11, no. 11 (November 4, 2019): 2309. http://dx.doi.org/10.3390/w11112309.

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The deterioration of rock geomechanical behaviors subjected to freeze–thaw (F–T) action is a determining factor for rock engineering and rock structures in cold regions. In this work, taking six groups of granite obtained from an open pit mine as the research object, F–T cycle treatment, in-situ AE (acoustic emission) monitoring and ultrasonic detection techniques were performed to experimentally reveal the effects of F–T fatigue damage on the mechanical and acoustic properties of granite. The results indicate that the F–T action impacts the rock’s mesoscopic structure, deformation, strength,

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13

Guo, Quanxin, Ahmed S. Abou-Sayed, and Harold Robert Engel. "Feeling the Pulse of Drill Cuttings Injection Wells - A Case Study of Simulation, Monitoring and Verification in Alaska." SPE Journal 12, no. 04 (December 1, 2007): 458–67. http://dx.doi.org/10.2118/84156-pa.

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Summary In April 1998, a program for continuous deep disposal of drill cuttings and open pit materials was initiated on the North Slope of Alaska. This ongoing injection project is commonly referred to as GNI, or "Grind and Inject." Accumulated drilling cuttings and mud slurry are injected into a receptive Cretaceous soft sandstone in three wells: GNI-1, GNI-2, and GNI-3. Typical operations involve injecting slurry into one of the three wells continuously for a number of days and then switching injection to another well. The average injection rate is approximately 30,000 B/D. As of 30 Septembe

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14

Apostu, Izabela-Maria, Maria Lazar, and Florin Faur. "A Suggested Methodology for Assessing the Failure Risk of the Final Slopes of Former Open-Pits in Case of Flooding." Sustainability 13, no. 12 (June 19, 2021): 6919. http://dx.doi.org/10.3390/su13126919.

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Some valuable minerals, such as lignite, are extracted through open-pit mining works. After the cessation of mining activity, large-scale gaps result in the landscape. These gaps, also called “remaining gaps”, represent some of the roughest types of environmental impacts. After the cessation of mining activity, recovery and ecological restoration works are required. However, it is first necessary to carry out risk assessment studies considering the possible future influences on the final slopes. For this study, flooding of the remaining lignite open-pits gaps was considered as the ecological r

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15

VALENCIA, JORGE H., MANUEL R. DUEÑAS, PAUL SZÉKELY, DIEGO BATALLAS, FRANCISCO PULLUQUITÍN, and SANTIAGO R. RON. "A new species of direct-developing frog of the genus Pristimantis (Anura: Terrarana: Craugastoridae) from Cordillera del Cóndor, Ecuador, with comments on threats to the anuran fauna of the region." Zootaxa 4353, no. 3 (November 24, 2017): 447. http://dx.doi.org/10.11646/zootaxa.4353.3.3.

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A new frog in the genus Pristimantis is described from a cloud forest on the western flanks of the Cordillera del Cóndor and eastern Andean slopes in the province of Zamora Chinchipe, southeastern of Ecuador. We inferred its phylogenetic position using DNA sequences of mitochondrial and nuclear genes. The new species is strongly supported as part of a clade that includes P. ardalonychus, P. cajamarcensis, P. ceuthospilus, P. chalceus, P. minutulus, P. luteolateralis, P. parvillus, P. ockendeni, P. unistrigatus, and P. walkeri. It can be distinguished from all other species from Cordillera del

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16

Whittall, John, Erik Eberhardt, and Scott McDougall. "Runout analysis and mobility observations for large open pit slope failures." Canadian Geotechnical Journal 54, no. 3 (March 2017): 373–91. http://dx.doi.org/10.1139/cgj-2016-0255.

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Objectively forecasting the runout of a potential open pit slope failure, in addition to identifying the failure itself, is a critical component of a mine’s risk management plan. Recent losses arising from large open pit slope failures demonstrate shortcomings in current practice. A dataset of 105 pit slope failures was compiled to compare open pit runout trends against established empirical runout relationships for natural landslides. Fahrböschung angle versus volume and Fahrböschung angle versus slope angle relationships provide reasonable runout estimates. Open pit slopes have the advantage

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17

Whittall, John. "Runout estimates and risk-informed decision making for bench scale open pit slope failures." Canadian Geotechnical Journal 57, no. 7 (July 2020): 1044–57. http://dx.doi.org/10.1139/cgj-2018-0462.

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Bench scale open pit slope failures are common occurrences in open pit mines and present a hazard to workers near freshly excavated faces. Objectively forecasting the zone of influence of bench scale failures is an important component of the mine’s risk management plan, as they occur more frequently than multi-bench scale landslides and can be more difficult to monitor. This paper presents a dataset of 167 bench scale open pit slope failures and tests runout and bench-width sizing methods to identify appropriate tools to estimate a stand-off distance from a fresh bench face. A length versus fa

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18

Feng, Shao Jie, Ai Min Yao, and Yan Fei Dong. "Fuzzy Comprehensive Evaluation of Open-Pit Slope Stability." Advanced Materials Research 962-965 (June 2014): 1029–33. http://dx.doi.org/10.4028/www.scientific.net/amr.962-965.1029.

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According to the stability of open-pit slope, the main influence factors of the slope stability is analyzed firstly. Then, based on the basic principle and method of fuzzy mathematics, the slope stability analysis of fuzzy and comprehensive evaluation further more model is established and the grading index of the slope stability is determined. Finally, by analyzing an example of large open-pit mine slope engineering, the stability of the slope is evaluated. The results show that the evaluation model could consider the uncertain properties in actual slope problems,and the evaluation result is r

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19

Zheng, Yun, Cong Xin Chen, Xi Xi Zhu, Xiu Min Liu, and Guan Wen Cheng. "Stability Analysis of Open-Pit Slope Containing a Fault Utilizing UDEC." Applied Mechanics and Materials 444-445 (October 2013): 1204–10. http://dx.doi.org/10.4028/www.scientific.net/amm.444-445.1204.

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Faults are the commonly encountered large geological discontinuities in hard rock masses, many severe open pit slope failures are found to be closely associated with the faults presence nearby. Open-pit slope takes shape gradually as a rock unloading process accompanied by geostress redistribution, especially in a slope containing a fault. The finite difference code (UDEC) was employed as the analytical method in this paper and coulomb slip model was utilized to describe the properties of fault provided by UDEC. Parametric analysis has identified both the fault dips and fault locations relativ

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20

Chang, Lai Shan, Xin Li, Rui Peng Zhang, and Ya Nan Chen. "Analysis on FLAC Large Deformation Mode of Rock Mass due to Transform from Open-Pit to Underground Mining." Applied Mechanics and Materials 353-356 (August 2013): 957–60. http://dx.doi.org/10.4028/www.scientific.net/amm.353-356.957.

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According to the problem of rock slope deformation, fracture and stability during the transform from open-pit to underground mining at Yanqianshan Iron Mine, using FLAC large deformation mode to analysis mine excavation characteristics about deformation and damage of open-pit slope in different depth. Excavation simulation displays that the softrock of north slope easily to backfall heavily, But unusually form rapid sliding, the influence to underground mining is small, but large number of small crushed stones fill the rock layer, that is unfavorable to control the dilution and loss index. Sou

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21

Tao, Zhigang, Mengnan Li, Chun Zhu, Manchao He, Xiaohui Zheng, and Shibo Yu. "Analysis of the Critical Safety Thickness for Pretreatment of Mined-Out Areas Underlying the Final Slopes of Open-Pit Mines and the Effects of Treatment." Shock and Vibration 2018 (May 28, 2018): 1–8. http://dx.doi.org/10.1155/2018/1306535.

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Where a mined-out area underlies a slope, it is a direct threat to slope safety and stability. This is of particular concern where a mined-out area underlies the slope of an open-pit mine, and it has a serious impact on the design and safety measures used for the mine. If a mined-out area underlying the final slope of an open-pit mine is not treated adequately and at the appropriate time, it may cause the slip failure of the final slope during the service life of the mine, posing a serious threat to the safety of personnel and equipment during the stripping phase. In light of the potential for

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22

Amoushahi, Sina, Martin Grenon, Jacques Locat, and Dominique Turmel. "Deterministic and probabilistic stability analysis of a mining rock slope in the vicinity of a major public road — case study of the LAB Chrysotile mine in Canada." Canadian Geotechnical Journal 55, no. 10 (October 2018): 1391–404. http://dx.doi.org/10.1139/cgj-2017-0298.

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In recent years, several large open-pit mines have started operating in the province of Quebec in Canada, and some of the largest planned pits are located close to public infrastructure. Historically, large open-pit mining has seldom been done in many mining regions, such as the Abitibi region, where underground mines are the norm. As an integral part of achieving social acceptability of open-pit mining, the stability of mining slopes must be carefully analyzed during the design process and the presence of public infrastructure near the slopes must be adequately considered. The province of Que

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23

Bao, Guang Ming, Juan Chang, and Zhi Gang Liu. "Analysis of the Open-Pit to Underground Mining Slope Stability." Applied Mechanics and Materials 484-485 (January 2014): 599–603. http://dx.doi.org/10.4028/www.scientific.net/amm.484-485.599.

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This paper uses the simulation technology of computer numerical simulation, combined with the GAMBIT numerical modeling software and ANSYS structure analysis software, we carry out an in-depth research and analysis on the stability of engineering simulation, at the same times establish the mathematical model of ANSYS numerical simulation displacement stability and design the ANSYS command stream program algorithm. Finally, this paper uses the open-pit to underground mining slope stability as an example, to verify the reliability of the model and algorithm. Through the numerical simulation, we

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24

Zhang, Zhi Yu, Long Fa Luan, Ji Yao, Jian Bin Xie, and Xiang Long Li. "Study on the Influence of Stability for Higher Precipitous Open Pit Slope under Mining Blasting." Advanced Materials Research 255-260 (May 2011): 3822–26. http://dx.doi.org/10.4028/www.scientific.net/amr.255-260.3822.

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Based on the hydrological, geologies and slope features of Jianshan phosphate mine in Yunnan province, the geomechanics model of slope was established. Then the static stability of different elevations in mining section was studied by using methods such as the rigid body limit equilibrium method, finite element method, continuum large deformation Lagrange element method. According to the supervise data of the mining blasting, the dynamic response of the slope in blasting was studied by continuum large deformation Lagrange element method, and some suggestions were proposed for following mining

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25

Cała, Marek, Michał Kowalski, and Agnieszka Stopkowicz. "The Three-Dimensional (3D) Numerical Stability Analysis of Hyttemalmen Open-Pit." Archives of Mining Sciences 59, no. 3 (October 20, 2014): 609–20. http://dx.doi.org/10.2478/amsc-2014-0043.

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Abstract The purpose of this paper was to perform the 3D numerical calculations allowing slope stability analysis of Hyttemalmen open pit (location Kirkenes, Finnmark Province, Norway). After a ramp rock slide, which took place in December 2010, as well as some other small-scale rock slope stability problems, it proved necessary to perform a serious stability analyses. The Hyttemalmen open pit was designed with a depth up to 100 m, a bench height of 24 m and a ramp width of 10 m. The rock formation in the iron mining district of Kirkenes is called the Bjornevaten Group. This is the most struct

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Nasab, Hooman Askari, Kwame Awuah Offei, and Hesameddin Eivazy. "Large-scale open pit production scheduling using Mixed Integer Linear Programming." International Journal of Mining and Mineral Engineering 2, no. 3 (2010): 185. http://dx.doi.org/10.1504/ijmme.2010.037624.

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Muchnik, S. V. "Pre-stressing of an open pit bench during large-scale blasting." Journal of Mining Science 46, no. 6 (November 2010): 650–55. http://dx.doi.org/10.1007/s10913-010-0082-x.

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Li, Ke Gang, Ke Peng Hou, and Ze Yang. "Stability Analysis of High Rock Slope at a Open Pit Mine and its Control Measure." Advanced Materials Research 261-263 (May 2011): 1549–53. http://dx.doi.org/10.4028/www.scientific.net/amr.261-263.1549.

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A lot of slopes will be formed in the process of engineering construction, and how to ensure the slope stability has become a very key field and common concern to geotechnical engineering. Taking the slope of a open pit mine as an example, the slope stability at original state is analyzed firstly, and then, the optimal control measure and the slope stability trend during the treatment are also researched. The results show that at the original state, the slope stability is worse, and a large contiguous plastic regions will occure on the slope. After comparing to some methods, local unloading is

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Hu, Yingpeng, Fengyu Ren, Hangxing Ding, Yu Fu, and Baohui Tan. "Study on the Process and Mechanism of Slope Failure Induced by Mining under Open Pit Slope: A Case Study from Yanqianshan Iron Mine, China." Advances in Civil Engineering 2019 (March 6, 2019): 1–26. http://dx.doi.org/10.1155/2019/6862936.

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Mining under an open pit slope results in the collapse and slide of the slope. In this paper, a combination of methods including Google Earth and field investigations is applied to investigate the process of eastern slope failure induced by underground mining in the Yanqianshan Iron Mine over five years. According to the observed ground deformation features, the geomorphic zone of the eastern slope can be divided into four regions (caved rock zone, cracking zone, toppling zone, and sliding zone). Break angles and fracture initiation angles at different times are counted separately. Based on th

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30

Abdulai, Musah, and Mostafa Sharifzadeh. "Probability Methods for Stability Design of Open Pit Rock Slopes: An Overview." Geosciences 11, no. 8 (July 28, 2021): 319. http://dx.doi.org/10.3390/geosciences11080319.

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The rock slope stability analysis can be performed using deterministic and probabilistic approaches. The deterministic analysis based on the safety concept factor uses fixed representative values for each input parameter involved without considering the variability and uncertainty of the rock mass properties. Probabilistic analysis with the calculation of probability of failure instead of the factor of safety against failure is emerging in practice. Such analyses offer a more rational approach to quantify risk by incorporating uncertainty in the input variables and evaluating the probability o

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Sun, Shi Guo, Hong Yang, Shao Jie Feng, and Wei Guo Duan. "Study for Deformation Control Technology of Bottom Slope of Conveyor Belt in Open Pit Mine." Advanced Materials Research 347-353 (October 2011): 1657–62. http://dx.doi.org/10.4028/www.scientific.net/amr.347-353.1657.

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Deformation of slope for all section is almost the same while the width of slope along the strike is large enough, that is plane deformation. If the width is small, then cannot analyze according to the plane problem. According to above method, slope deformation of concave base is 3D problem if excavates a limited width concave conveyor belt alone the slope dip in open-pit mine. In this article, the relation between excavation width and deformation is analyzed by 3D numerical simulation method, on the basis of some mine actual geological occurrence conditions, meanwhile, calculative equation am

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Pandit, Bhardwaj, Gaurav Tiwari, Gali Madhavi Latha, and G. L. Sivakumar Babu. "Stability Analysis of a Large Gold Mine Open-Pit Slope Using Advanced Probabilistic Method." Rock Mechanics and Rock Engineering 51, no. 7 (April 6, 2018): 2153–74. http://dx.doi.org/10.1007/s00603-018-1465-6.

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He, Feng, Lai Gui Wang, Zai Xing Yao, Li Lin Zhang, and Guo Chao Zhao. "The Creep Rupture Numerical Simulation of Coal (Rock) Layered Slope." Advanced Materials Research 250-253 (May 2011): 271–77. http://dx.doi.org/10.4028/www.scientific.net/amr.250-253.271.

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With rapid development of the national open mining coal resources, which generated lots of open-pit slope, and typically coal(rock) layered slope，under the external and internal structure function, it caused massive landslide with time increasing. Large coal(rock) slope deformation is not instantaneous, but rather the result of a long slow rheology, which is the main forms of creep; which is a serious threat to mining enterprise and the safety of workers. Appling the maximum tensile stress theory and establishing the creep rupture judgment criteria, And finite description of the creep cracks i

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Puell Ortiz, Jorge, and Sanjay Kumar Shukla. "Methodology for a dump design optimization in large-scale open pit mines." Cogent Engineering 4, no. 1 (January 1, 2017): 1387955. http://dx.doi.org/10.1080/23311916.2017.1387955.

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Iryna M. Gorban, Anna S. Korolova, Georgiy P. Sokolovsky, Pavlo Y. Romanenko та Stepan M. Srebnyuk. "Рhysical simulation of erosion of bottom pits". Environmental safety and natural resources 35, № 3 (17 вересня 2020): 78–93. http://dx.doi.org/10.32347/2411-4049.2020.3.78-93.

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The present paper is devoted to research of the erosion of large-scale sand pits in the water flow. The investigations were performed in the hydrodynamic flume with sandy bottom. To provide suitable conditions for sediment transport in the flume, the analysis of the factors leading to the motion of sediments was carried out in accordance with the Shields diagram. It was shown that the flow regime created in the laboratory channel promotes the development of natural bed forms such as ripples. Estimations of the velocity of movement of the ripples were obtained. The experiments with large sand p

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Paradella, W. R., J. C. Mura, F. F. Gama, A. R. Santos, G. G. Silva, M. Galo, P. O. Camargo, and A. Q. Silva. "COMPLEMENTARY USE OF INFORMATION FROM SPACE-BASED DINSAR AND FIELD MEASURING SYSTEMS FOR OPERATIONAL MONITORING PURPOSES IN OPEN PIT IRON MINES OF CARAJÁS MINING COMPLEX (BRAZILIAN AMAZON REGION)." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XL-7/W3 (April 30, 2015): 905–11. http://dx.doi.org/10.5194/isprsarchives-xl-7-w3-905-2015.

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Now spanning five simultaneous open-pit operations with exploration carried out through open pit benching, Carajás complex encompasses the world´s largest iron reserves. Open pit mining operations in the area can lead to slope instabilities with risks to personnel, equipment and production due to intense excavations in rock products of low geomechanical quality, blasting practices and heavy precipitation. Thus, an effective prediction and management of surface deformations should be a key concern for the mining operations. The ground displacement monitoring techniques in Carajás include surfac

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Jiang, Song, Minjie Lian, Caiwu Lu, Qinghua Gu, Shunling Ruan, and Xuecai Xie. "Ensemble Prediction Algorithm of Anomaly Monitoring Based on Big Data Analysis Platform of Open-Pit Mine Slope." Complexity 2018 (August 1, 2018): 1–13. http://dx.doi.org/10.1155/2018/1048756.

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With the diversification of pit mine slope monitoring and the development of new technologies such as multisource data flow monitoring, normal alert log processing system cannot fulfil the log analysis expectation at the scale of big data. In order to make up this disadvantage, this research will provide an ensemble prediction algorithm of anomalous system data based on time series and an evaluation system for the algorithm. This algorithm integrates multiple classifier prediction algorithms and proceeds classified forecast for data collected, which can optimize the accuracy in predicting the

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Yang, Ren Shu, Yu Long Che, Guo Liang Yang, and Chuan Huo. "Experiment Study on Decreasing Blasting Vibration Adopting Large Diameter Hole-by-Hole Initiation." Advanced Materials Research 301-303 (July 2011): 1556–59. http://dx.doi.org/10.4028/www.scientific.net/amr.301-303.1556.

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Blasting vibration damage is a major factor in mine safety. Millisecond blasting is an effective means to reduce blasting vibration damage. Taking field test method to study high slope deformation in open pit mines a little bit difference of each quick-fried bore blows up’s blasting vibration damage. Research found that, taking a little bit difference of each quick-fried bore blows up, Slope’s vibration velocity is 0.6cm/s, Compared to initiation by row’s theoretical value reduced by 58.33% , a little bit difference of each quick-fried bore blows up is an effective means to reduce blasting vib

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Do, Tuoc Ngoc, Giao Si Ho, Xuan Manh Tran, Thanh Van Doan, and Nam Duy Bui. "Mining technology for exploiting deep open-pit mines in Vietnam." Journal of Mining and Earth Sciences 61, no. 5 (October 10, 2020): 47–57. http://dx.doi.org/10.46326/jmes.ktlt2020.04.

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Vietnam's open-pit mines have been exploited deeper and deeper. At the end of exploitation, the bottom of the mine is 300÷400 m lower than the sea level. Mining in the deep layers will face a series of difficulties such as seasonal exploitation, high pit bank, large amount of water mud, limited field size, increasing intensity of exploitation on each layer and the whole shore, conditions. The microclimate changes in an unfavorable direction at the bottom of the mine, etc. On the basis of the analysis of the characteristics of the deep layers, experience in exploiting at home and abroad, the ar

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Zheng, Xiangtian, Xiufeng He, Xiaolin Yang, Haitao Ma, Zhengxing Yu, Guiwen Ren, Jiang Li, Hao Zhang, and Jinsong Zhang. "Terrain Point Cloud Assisted GB-InSAR Slope and Pavement Deformation Differentiate Method in an Open-Pit Mine." Sensors 20, no. 8 (April 20, 2020): 2337. http://dx.doi.org/10.3390/s20082337.

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Ground-based synthetic aperture radar interferometry (GB-InSAR) is a valuable tool for deformation monitoring. The 2D interferograms obtained by GB-InSAR can be integrated with a 3D terrain model to visually and accurately locate deformed areas. The process has been preliminarily realized by geometric mapping assisted by terrestrial laser scanning (TLS). However, due to the line-of-sight (LOS) deformation monitoring, shadow and layover often occur in topographically rugged areas, which makes it difficult to distinguish the deformed points on the slope between the ones on the pavement. The exta

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Liu, Shi Qiang, and Erhan Kozan. "New graph-based algorithms to efficiently solve large scale open pit mining optimisation problems." Expert Systems with Applications 43 (January 2016): 59–65. http://dx.doi.org/10.1016/j.eswa.2015.08.044.

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Zhang, J. "INSAR COLLABORATIVE MONITORING MODE AND MULTI-MODE COMPUTING SERVICES FOR GEOHAZARDS IDENTIFICATION IN OPEN-PIT MINING AREA." International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLIII-B1-2021 (June 28, 2021): 241–47. http://dx.doi.org/10.5194/isprs-archives-xliii-b1-2021-241-2021.

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Abstract. InSAR has developed a variety of methods, such as D-InSAR, PS-InSAR, MBAS, CT, SqueeSAR, POT, etc., which have been widely used in land subsidence monitoring. For open pit mining areas, there are usually mining activity, complex terrain features, low coherence, and local large deformation gradients, which makes it difficult for time series InSAR technology to obtain high-density surface deformation information in open pit mining areas. Traditional methods usually only monitor the linear deformation of the surface caused by the mining of a few working zone above the underground mining

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Le, Canh Van, Cuong Xuan Cao, and Ha Thu Thi Le. "Research on optimal takeoff positions of UAV integrated GNSS - RTK in producing large scale topological maps for open - pit mines." Journal of Mining and Earth Sciences 61, no. 5 (October 31, 2020): 54–63. http://dx.doi.org/10.46326/jmes.2020.61(5).06.

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Unmanned aerial vehicles (UAV) are widely used for establishing large scale topological maps. Recently, drones have been integrated with high-quality GNSS receivers which allows real time kinematic positioning (RTK), so are called UAV/RTK. This technology is beneficial to surveyors as they do not need to establish many ground control points in mapping such a complex terrain as open-pit mines. DJI Phantom 4 RTK (P4K) is a UAV/RTK which is of much interest due to its small size and low cost. For open-pit mines, the takeoff position of P4K needs to be seriously considered because of its influence

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Jakóbczyk, Joanna, Marek Cała, and Agnieszka Stopkowicz. "What Were the Reasons for the Rapid Landslide Occurrence in “Piaseczno” Open Pit? – Analysis of the Landslide Process." Studia Geotechnica et Mechanica 37, no. 1 (March 1, 2015): 25–35. http://dx.doi.org/10.1515/sgem-2015-0004.

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Abstract Landslides are major natural hazards occurring in opencast mining. The problem of slope stability failure in the existing open pit mines as well as in those which are at a stage of technical closure is current issue in Poland and all over the world. This problem requires conducting in-depth and meaningful analysis which will identify the causes of processes characterized by a very rapid course and large extent. The paper presents the analysis of the landslide causes, which took place on May 11, 2011 on the western slope of the internal dump in “Piaseczno” sulphur mine (at a stage of t

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Lu, Xinxiao, Deming Wang, Botao Qin, Fuchao Tian, Guangyi Shi, and Shuaijun Dong. "Novel approach for extinguishing large-scale coal fires using gas–liquid foams in open pit mines." Environmental Science and Pollution Research 22, no. 23 (September 15, 2015): 18363–71. http://dx.doi.org/10.1007/s11356-015-5385-7.

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Patrick, Mukonki May, Muhota Kawinda Augustin, and Freddy Bokwala Bonkeka. "Strategic Mine Planning Approach Applied to Large Scale Copper open Pit Mines by Comparing The Impact of three Different Bloc Models of the Same Deposit, On the Long Term Mine Plan." International Journal of Advanced Research in Engineering 3, no. 2 (June 24, 2017): 1. http://dx.doi.org/10.24178/ijare.2017.3.2.01.

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The Kamoto Oliveira Virgule (KOV) open pit mine is located at 300Km from Lubumbashi, second largest city of the Democratic Republic of the Congo, in the mineral rich province of the Lualaba (EX-Katanga province).KOV pit is located 10Km south of the Kolwezi town and it is essentially constituted of sedimental rock, in a major portion of the so called “Lambeau Geologique de Kolwezi”, which is a part of the well-known copperbelt mineralization. In 2006, a joint venture of Glencore, Gecamines (the DRC State owned Company), and Simco, took over the open pit mine, which was previously owned by Gecam

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Leblanc, Jonathan, Dominique Turmel, Jacques Locat, Carl B. Harbitz, Finn Løvholt, Jihwan Kim, Martin Grenon, and Ariane Locat. "Tsunami generation by potential, partially submerged rockslides in an abandoned open-pit mine: the case of Black Lake, Quebec, Canada." Canadian Geotechnical Journal 55, no. 12 (December 2018): 1769–80. http://dx.doi.org/10.1139/cgj-2017-0477.

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The Black Lake rockslide is located on the east wall of an open-pit mine initially operated by LAB Chrysotile near Thetford Mines, Quebec. Movements were observed in July 2012 when a volume of 2.0 × 107 m3 was mobilized, destroying a large portion of Highway 112. Mining operations ceased in 2012, causing the complete shutdown of the pumping system whose goal was to prevent the rise of water level in the pit. As the water level increases in the pit, it is essential to determine the potential of tsunami generation by possible partially submerged rockslides and to understand the potential impacts

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Milani, Gabriele. "A Genetic Algorithm with Zooming for the Determination of the Optimal Open Pit Mines Layout." Open Civil Engineering Journal 10, no. 1 (May 31, 2016): 301–22. http://dx.doi.org/10.2174/1874149501610010301.

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A Genetic Algorithm (GA) with nested zooming strategy is proposed for the determination of the optimal open pit mine design.Different genetic procedures are applied to increase robustness, namely two typologies of admissible mutations for the elite sub-population subjected to zooming and mutation and reproduction for the remaining individuals. In order to further improve convergence rate, a user-defined population percentage, depending on individuals fitness, is replaced with new phenotypes, enforcing chromosomic renewal.Several comparisons with (traditionally used) dynamic programming approac

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Wang, Shunyao, Xiaoping Lu, Zhenwei Chen, Guo Zhang, Taofeng Ma, Peng Jia, and Beibei Li. "Evaluating the Feasibility of Illegal Open-Pit Mining Identification Using Insar Coherence." Remote Sensing 12, no. 3 (January 22, 2020): 367. http://dx.doi.org/10.3390/rs12030367.

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Illegal open-pit mining causes environmental harm and undermines sustainable development. Conventional monitoring approaches such as field research and unmanned aerial vehicle (UAV) imagery are time-consuming and labor-intensive, making large-scale monitoring difficult. In comparison, optical remote sensing imagery can cover large areas but is vulnerable to adverse weather conditions and is not sensitive to vertical ground changes. As open-pit excavation causes sudden changes in the scattering properties of ground objects along with dramatic vertical deformation, we evaluated the feasibility o

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Yin, Zuoming, Desheng Wang, Xuguang Wang, Zhiheng Dang, and Wantao Li. "Optimization and Application of Spacing Parameter for Loosening Blasting with 24-m-High Bench in Barun Open-Pit Mine." Shock and Vibration 2021 (February 12, 2021): 1–13. http://dx.doi.org/10.1155/2021/6670276.

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In view of the near slope blasting in Barun open-pit mine, which has merged sublevel mining, the operation safety conditions of middle-sized and large equipment in the second phase expansion are poor and need urgent improvement. To increase the efficiency of expansion and reduce costs, a 24-m-high bench and large spacing parameter for loosening blasting are proposed. The analysis of the physical mechanism of the stress wave attenuation in the rock indicates that the cylindrical charge is equivalent to several spherical charges. Considering the pressure attenuation, reflection, transmission, an

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