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Articles de revues sur le sujet « Excavation (process) »

Auteur : Grafiati

Publié le 25 juillet 2024

Mis à jour le 31 juillet 2025

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1

Lee, Joosung, Byeol Kim, Dongik Sun, Changsoo Han, and Yonghan Ahn. "Development of Unmanned Excavator Vehicle System for Performing Dangerous Construction Work." Sensors 19, no. 22 (2019): 4853. http://dx.doi.org/10.3390/s19224853.

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Of all the machinery and equipment used on construction sites, excavators are responsible for the greatest number of fatal accidents. Excavation is an inherently risky process due to imprecise work processes and the unstable external environment on most work sites. The resulting accidents cause serious injuries that threaten the lives of not only the excavator pilots but also those working around them. In this study, we propose a mechanical device that is capable of operating the excavator remotely from a nearby safe location such as a site office. To ensure worker safety and at the same time

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Lukashuk, Olga A., and Konstantin Iu Letnev. "Determining operation parameters of the leverage mechanism in a mining excavator." Izvestiya vysshikh uchebnykh zavedenii. Gornyi zhurnal 1 (March 30, 2021): 94–102. http://dx.doi.org/10.21440/0536-1028-2021-2-94-102.

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Introduction. The paper analyzes the process of rock excavation using a front-shovel operational equipment of an open-pit excavator in the context of determining rational modes of operation for its main mechanisms (lifting and thrusting mechanisms) during the excavation. The main purpose of the study is to establish the kinematic and dynamic characteristics of the excavation process by identifying patterns of changes in the operating parameters of the main mechanisms. Research methodology includes mathematical modelling and computational experiment with the use of machines and mechanisms theor

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Zhou, Zhangtao, Zheming Zhu, XinXing Jin, and Hao Tang. "Numerical Prediction of Rock Fracturing During the Process of Excavation." International Journal of Geotechnical Earthquake Engineering 1, no. 2 (2010): 12–23. http://dx.doi.org/10.4018/jgee.2010070102.

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During the process of excavation, blasting can induce cracking inside the surrounding rock. Considering the effects of material properties and loading conditions, a rock blasting excavation model with two successive excavation steps was developed through the use of AUTODYN code. Four kinds of equation of state (EOS), linear, shock, JWL, and compaction were applied to the materials employed in this numerical model. A modified principal stress failure criterion was applied to determining material statuses, and TNT explosive and a relatively homogeneous igneous rock, diorite, were used in this nu

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Qin, Zuhe. "Modeling and Simulation of Theoretical Digging Force of an Excavator Based on Arbitrary Posture." Mathematical Problems in Engineering 2022 (September 10, 2022): 1–7. http://dx.doi.org/10.1155/2022/8030349.

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Theoretical digging force is an important performance parameter of the hydraulic excavator. Due to the multi-linkage mechanism, the digging posture of an excavator is ever-changing; thus, it is not easy to calculate the theoretical digging force. Traditionally, the theoretical digging force is calculated by selecting a limited number of postures of the excavator based on experience, which cannot reflect the force condition of each posture in the excavation process. In order to calculate the theoretical digging force of any posture in the excavation process, this paper uses the principle of the

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Yang, Zi Sheng, Jun Xia Liu, and Yi Ren Wang. "Weight Analysis of Accident Factors in Deep Foundation Excavation Based on Analytic Hierarchy Process." Applied Mechanics and Materials 711 (December 2014): 529–34. http://dx.doi.org/10.4028/www.scientific.net/amm.711.529.

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For the past few years, great development has been achieved in deep foundation excavation. However, due to foundation excavation’s locality, individual diversity, complexity and uncertainty, the probability of accidents in foundation pit engineering tends to be greater than that in main works, and the accident rate may even reach about 20%, which makes the study on factors leading to foundation excavation accidents quite necessary and meaningful. By use of Analytic Hierarchy Process (AHP), this paper has figured out the ratio (weight) of the investigation, design, construction and other factor

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Li, Shen Gang, Wen Zhao, Xiao Li Cai, Yin Fu Ma, and Lu Zhang. "Research on Stability in Metro Tunnel Constructing with Shallow Buried Covered Excavation in Loose Sand Layers." Advanced Materials Research 594-597 (November 2012): 1240–44. http://dx.doi.org/10.4028/www.scientific.net/amr.594-597.1240.

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For subway tunneling in urban underground, high safty of construction is needed.However, the safty and rationality of excavating plan are forecasted difficultly because of consealment. Based on the Zhang-Shen tunnel construction of Shenyang subway, bench method, single side-wall heading excavation method and CD excavation method are numerical simulated; according to the numerical calculation results and the constructing process, bench method is adopted; the ground settlement caused by excavation monitored during excavating is in the allowed range and the tunnel is safe during excavating.

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Shemiakin, Stanislav. "Determining the maximum turning force of the hydraulic backhoe excavator bucket." Izvestiya vysshikh uchebnykh zavedenii. Gornyi zhurnal, no. 3 (June 20, 2023): 17–24. http://dx.doi.org/10.21440/0536-1028-2023-3-17-24.

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Introduction. Single-bucket excavators with both flexible and rigid suspension of work equipment are actively engaged in construction, stripping work and production mining. Excavators with rigid suspension are commonly used in construction, while excavators with flexible suspension are used in mining practice. This work considers the process of excavating rock with a single-bucket hydraulic backhoe excavator. The reliability and durability of excavators depend on the correct choice of the parameters of work equipment elements. Research objective is to determine the maximum turning force of the

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Mu, Linlong, Jianhong Lin, Zhenhao Shi, and Xingyu Kang. "Predicting Excavation-Induced Tunnel Response by Process-Based Modelling." Complexity 2020 (April 28, 2020): 1–11. http://dx.doi.org/10.1155/2020/9048191.

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Potential damages to existing tunnels represent a major concern for constructing deep excavations in urban areas. The uncertainty of subsurface conditions and the nonlinear interactions between multiple agents (e.g., soils, excavation support structures, and tunnel structures) make the prediction of the response of tunnel induced by adjacent excavations a rather difficult and complex task. This paper proposes an initiative to solve this problem by using process-based modelling, where information generated from the interaction processes between soils, structures, and excavation activities is ut

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Wu, Shan, Jian Wu, and Dunwen Liu. "Research on Construction Sequences and Construction Methods of the Small Clear-Distance, Double-Arch Tunnel under an Asymmetrical Load." Applied Sciences 13, no. 14 (2023): 8242. http://dx.doi.org/10.3390/app13148242.

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A small clear-distance, double-arch tunnel under an asymmetrical load combines the characteristics of small clear-distance, tunnels and double-arch tunnels, and the influence of an asymmetrical terrain must be considered. Its construction stability is a problem worth studying. This paper used the Wengcun tunnel as the engineering background. Midas/GTS finite element analysis software was used to study the effects of eight excavation sequences and two excavation methods on tunnel stability. The results showed that the deformation and force of the tunnel were asymmetric under the asymmetrical te

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Wang, Yong, Linlin Wang, Chenchen Li, et al. "Optimization of Excavator Bucket Structure by a Coupled Simulation Method." Applied Sciences 13, no. 20 (2023): 11336. http://dx.doi.org/10.3390/app132011336.

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As a component directly in contact with materials in the excavation process of the excavator, the structure and performance of the bucket directly affect the efficiency of the excavator. With the increasingly prominent environmental and energy problems, it has become a research difficulty to optimize the bucket structure of excavators so as to reduce the digging resistance and energy consumption of excavators. Therefore, an orthogonal optimization method of bucket structure that couples Adams with EDEM was proposed to explore the excavation performance of buckets with different structures unde

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Komissarov, Anatoly P., Yuliya A. Lagunova, and Olga A. Lukashuk. "SOFTWARE MANAGEMENT OF THE ROCK EXCAVATION PROCESS BY A QUARRY EXCAVATOR." Mining Equipment and Electromechanics, no. 5 (December 23, 2020): 28–33. http://dx.doi.org/10.26730/1816-4528-2020-5-28-33.

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ISHIKAWA, Masato, Takanobu ASHIDA, Taito HARAGUCHI, Tetsu OGAWA, and Taisuke KUSABA. "Model of the excavation process for efficiency of the hydraulic excavator." Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2016 (2016): 2A2–08b5. http://dx.doi.org/10.1299/jsmermd.2016.2a2-08b5.

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Arabaninezhad, Arefeh, and Ali Fakher. "A framework for the use of reliability methods in deep urban excavations analysis." Acta Geotechnica Slovenica 18, no. 1 (2021): 2–14. http://dx.doi.org/10.18690/actageotechslov.18.1.2-14.2021.

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Deep excavations in urban areas impose deformation to adjacent structures; hence the reliability of deformation analysis for the real deep excavation projects is very important to be assessed. In this study a framework is presented for the use of reliability methods in deformation analysis of deep urban excavations. The suggested framework is applied for 5 real deep excavation projects implemented during last 10 years. All studied cases were recognized as projects of high importance in urban areas, and were monitored during the excavation process. A non-probabilistic reliability analysis proce

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Sanders, Donald H. "Enabling Archaeological Hypothesis Testing in Real Time using the REVEAL Documentation and Display System." Virtual Archaeology Review 2, no. 4 (2011): 89. http://dx.doi.org/10.4995/var.2011.4560.

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<p>This paper focuses on a system that can ensure that excavations are indeed fully documented and that the record is accurate. REVEAL is a single piece of software that coordinates all data types used at excavations with semi-automated tools that in turn can ease the process of documenting sites, trenches and objects, of recording excavation progress, of researching and analyzing the collected evidence, and even of creating 3D models and virtual worlds. Search and retrieval, and thus testing hypotheses against the excavated material happens in real time, as the excavation proceeds. That

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González-Quiñones, Juan José, Juan Francisco Reinoso-Gordo, José Antonio Solano-García, et al. "Monitoring an archaeological excavation using photogrammetry and digital elevation models (DEMS): the case study of Barranco León in Orce (Granada, Spain)." SPAL. Revista de Prehistoria y Arqueología de la Universidad de Sevilla, no. 31.2 (2022): 10–30. http://dx.doi.org/10.12795/spal.2022.i31.18.

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In this paper, we describe and discuss emergent digital technologies employed for monitoring the excavations at the archaeological site of Barranco León (Granada, Spain) between 2017 and 2020. The method entails the following material requirements: a total station, a conventional camera, a computer and a software that integrates photogrammetry algorithms; in terms of human resources, the presence of an engineer for the first day of the excavation to set up the methodological process and trained excavation staff to perform said method on a daily basis is necessary. Here we present the daily wor

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Gao, Xiangxiang, Chuli Xu, Hongruyi Wei, Jindong Liu, and Qizhi Chen. "Model test study on horizontal soil arching effect in pile-supported retaining structures." Journal of Physics: Conference Series 3021, no. 1 (2025): 012003. https://doi.org/10.1088/1742-6596/3021/1/012003.

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Abstract This study aims to investigate the load transfer mechanism between piles and soil and the evolution of horizontal soil arching effect during the excavation of pile-supported retaining structures in deep excavations. A series of model tests with staged excavation was systematically designed to examine the effects of excavation depth, pile width, and net pile spacing on horizontal soil arching effect. The investigation also tracked changes in lateral earth pressure coefficients and monitored crack propagation patterns in the soil behind piles. The evolution of the soil arching process w

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Fu, He-Lin, Huang-Shi Deng, Yi-Bo Zhao, Xiao-Bing Chang, and Hai-Dong Yi. "Study on the Disturbance of Existing Subway Tunnels by Foundation Sloping Excavation." Applied Sciences 13, no. 2 (2023): 948. http://dx.doi.org/10.3390/app13020948.

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Urban subway tunnels are located in a very complex operating environment, and the surrounding construction disturbances can lead to the deformation of existing tunnels or even produce tunnel disease issues. The disturbance of adjacent tunnels by pit excavation is an important geotechnical issue among scholars. In our study, the two-stage method is used to derive the deformation of the existing tunnel caused by the use of sloping excavation in the foundation pit. Subsequently, the correctness of the theoretical calculation formulae and the results are verified by constructing numerical calculat

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18

Zhang, Kexin, Jian Ouyang, Haijun Wang, Xin Dong, Dawei Hu, and Xingwei Xue. "RESEARCH ON CONSTRUCTION TECHNOLOGY OF LARGE-DIAMETER SHIELD TUNNEL IN SHALLOW COVER SECTION OF RED STRATA GEOLOGY." Stavební obzor - Civil Engineering Journal 33, no. 2 (2024): 181–98. http://dx.doi.org/10.14311/cej.2024.02.0013.

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This paper is based on the construction of the Haizhuwan Tunnel in Guangzhou, which passes through predominantly mudstone and sandstone red strata geology. Excavation is carried out using a slurry balance shield tunneling machine with both atmospheric pressure and pressurized cutterheads, and real-time excavation parameters recorded by the shield equipment are collected and statistically analyzed. Discovery: In the initial shallow-buried excavation section, the total thrust of the shield machine increased as the tunneling distance increased. By continuously adjusting the excavation parameters

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MOON, Sungwoo, and Jongwon SEO. "VIRTUAL GRAPHIC REPRESENTATION OF CONSTRUCTION EQUIPMENT FOR DEVELOPING A 3D EARTHWORK BIM." Journal of Civil Engineering and Management 23, no. 8 (2017): 977–84. http://dx.doi.org/10.3846/13923730.2017.1348981.

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BIM provides a visualization of the construction design that allows a construction manager to review the construction process and the information that is associated with the progress. BIM is usually applied to modeling structural objects with parametric geometry where the sequence of process can be predefined. However, BIM technology can also be applied to objects with irregular shape where parametric modeling is not possible such as earthwork topography based on TIN (Triangular Irregular Network).The objective of this research is to develop a 3D earthwork BIM methodology and provide a graph

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20

Li, San-Ping, Hai-Bin Lin, Li-Guo Wu, Wen-Quan Bao, and Jia-Mei Qi. "Innovative Design and Mechanical Analysis of Low-Resistance Fritilariae Ussuriensis Maxim Excavation Device." Applied Sciences 13, no. 18 (2023): 10204. http://dx.doi.org/10.3390/app131810204.

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Fritilariae ussuriensis maxim can be used as a medicine with little difficulty in its planting, but owing to its fragile characteristics, Fritilariae ussuriensis maxim is mainly collected by manual excavation. In order to solve the problems of the low working efficiency and poor environmental adaptability of the harvesting equipment of Fritilariae ussuriensis maxim, this paper designs a new excavation device, which can effectively reduce the operation resistance and improve the excavation efficiency of Fritilariae ussuriensis maxim. In this paper, the finite element method and discrete element

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Kryuchkov, Anatoliy, and Mykola Serhiienko. "The system of time characteristics and its influence on the excavation process in quarries." IOP Conference Series: Earth and Environmental Science 1481, no. 1 (2025): 012018. https://doi.org/10.1088/1755-1315/1481/1/012018.

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Abstract One of the trends in the development of productivity of earth-moving equipment in quarries of mineral materials is an increase in the strength and speed of digging excavators, which leads to an increase in energy consumption. Experimental studies have shown that the excavator robot in this mode produces significant forces and pressure on the excavator, which is not safe both during the design and standardization of earthworks. Some engineering methods for the development of mining productivity are based on simple deterministic static models, which fundamentally cannot adequately repre

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Li, Zan, Songyu Liu, Kai Wu, and Taishan Lu. "Analysis on Response of a Single Pile Subjected to Tension Load Considering Excavation Effects." Applied Sciences 12, no. 13 (2022): 6717. http://dx.doi.org/10.3390/app12136717.

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With the development of urbanization, numerous excavations are carried out to facilitate the development of underground space. As a support for tunnel structures, uplift piles are often installed prior to tunnel excavation. The excavation inevitably causes disturbance to the soil below the excavation surface, changing the soil’s mechanical behavior and stress state significantly. However, there is still a lack of a method to evaluate the change in pile capacity due to excavation. This paper proposes a semi-analytical approach for estimating the change in load-settlement behavior of an uplift p

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Kong, Suk-Min, Yoseph Byun, Sang-Il Choi, Chang-Yong Kim, and Seong-Won Lee. "A Study of Vibration Reduction Effects of TBM and NATM Parallel Construction Methods according to Tunnel Depth and Size." Applied Sciences 13, no. 6 (2023): 3492. http://dx.doi.org/10.3390/app13063492.

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The new Austrian tunnelling method (NATM) and tunnel boring machine (TBM) are methods for excavating underground spaces. The NATM construction method has noise and vibration problems, and excavation using TBM has the disadvantage of high initial cost and is limited by ground conditions. A parallel TBM and NATM construction method has been developed to overcome these limitations. However, research on the TBM and NATM parallel construction method is lacking, and it is crucial to identify the applicability of the TBM and NATM parallel construction method in advance by applying it to various groun

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Guo, Jian, Guobin Liu, and Lei Xu. "Numerical analysis of the surrounding responses induced by an irregular excavation in soft soil." IOP Conference Series: Earth and Environmental Science 1336, no. 1 (2024): 012028. http://dx.doi.org/10.1088/1755-1315/1336/1/012028.

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Abstract This study focuses on an “X”-shaped irregular excavation in Shanghai, presenting a detailed numerical analysis of the impact of the excavation on the surrounding area and the deflection of the retaining wall. By comparing computational outcomes with onsite observations, the research delves into the interaction between the excavation process and pre-existing underground structures within soft clay environments. The present findings reveal that proximate subsurface structures can mitigate retaining wall deflection and ground settlement by up to 30% within a distance ranging from 0.65 He

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Rehman, Hafeezur, Abdul Muntaqim Naji, Kyoungmin Nam, Saeed Ahmad, Khan Muhammad, and Han-Kyu Yoo. "Impact of Construction Method and Ground Composition on Headrace Tunnel Stability in the Neelum–Jhelum Hydroelectric Project: A Case Study Review from Pakistan." Applied Sciences 11, no. 4 (2021): 1655. http://dx.doi.org/10.3390/app11041655.

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During underground construction, the behavior of the ground is influenced by characteristics of the rock mass with situ stresses and ground water, cross section of the excavation area, excavation method, and the rate of excavation. These fundamental features are considered to ensure the support and stability of underground excavations and achieve long-term successful operation. However, the ground composition of the Himalayas hinders tunnel excavation, especially in case of mechanized tunneling; this causes time and cost overruns. This study has reviewed the recently completed Neelum–Jhelum Hy

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Xu, Changjie, Yuanlei Xu, Honglei Sun, and Qizhi Chen. "Characteristics of Braced Excavation under Asymmetrical Loads." Mathematical Problems in Engineering 2013 (2013): 1–12. http://dx.doi.org/10.1155/2013/452534.

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Numerous excavation practices have shown that large discrepancies exist between field monitoring data and calculated results when the conventional symmetry-plane method (with half-width) is used to design the retaining structure under asymmetrical loads. To examine the characteristics of a retaining structure under asymmetrical loads, we use the finite element method (FEM) to simulate the excavation process under four different groups of asymmetrical loads and create an integrated model to tackle this problem. The effects of strut stiffness and wall length are also investigated. The results of

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Zhang, Liwei, Weiguo Zhang, Zaiquan Wang, Sijia Liu, and Kai Liu. "Instability Risk Assessment for Deep Excavation of Soil–Rock Combinations Containing Groundwater." Applied Sciences 13, no. 23 (2023): 12887. http://dx.doi.org/10.3390/app132312887.

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Dynamic risk assessment is a pivotal tool for enhancing construction safety and minimizing the potential for partial failure during deep and extensive excavation projects. To enhance the efficacy of dynamic risk assessment in deep excavation, this study introduces a novel risk assessment model designed to evaluate instability risk in extensive excavations. It comprises a risk factor selection model for identifying the most pertinent factors and an instability risk assessment model for gauging the extent of instability risk throughout the construction process. Then, the model was deployed in th

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Liu, Chuancheng, Xikui Sun, Xiufeng Zhang, Qiangyong Zhang, and Yang Chen. "A Geomechanical Model Test on the Construction Stability and Overload Failure Process of an X-Type Cross Cavern Group." Shock and Vibration 2023 (July 25, 2023): 1–16. http://dx.doi.org/10.1155/2023/5864013.

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The geological environment of the surrounding rock in deep underground engineering will become more and more complex, along with the excavation depth continuously increasing. Under these conditions of high temperatures, high seepage, high geostress, and strong excavation disturbance, the surrounding rock during underground engineering can experience obvious nonlinear deformation failure. In order to guarantee the construction, excavation, and operational safety of deep underground engineering, we have to comprehensively study the failure characteristics and deformation characteristics of the s

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Wu, Qiang, Jianxiu Wang, Yanxia Long, et al. "The Field Monitoring and Numerical Simulation of Spatiotemporal Effects During Deep Excavation in Mucky Soft Soil: A Case Study." Applied Sciences 15, no. 4 (2025): 1992. https://doi.org/10.3390/app15041992.

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The issue of geotechnical hazards induced by excavation in soft soil areas has become increasingly prominent. However, the retaining structure and surface settlement deformation induced by the creep of soft soil and spatial effect of the excavation sequence are not fully considered where only elastic–plastic deformation is used in design. To understand the spatiotemporal effects of excavation-induced deformation in soft soil pits, a case study was performed with the Huaxi Park Station of the Suzhou Metro Line S1, Jiangsu Province, China, as an example. Field monitoring was conducted, and a thr

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Li, Bo, Cangqin Jia, Guihe Wang, Jun Ren, Gaofeng Lu, and Nannan Liu. "Numerical Analysis on the Performance of the Underwater Excavation." Advances in Civil Engineering 2020 (November 9, 2020): 1–14. http://dx.doi.org/10.1155/2020/8894138.

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Based on the Yongdingmen Station of Beijing Metro, the underwater excavation method for deep foundation pit was introduced. This study constructed a numerical analysis model to analyze the performance of surface settlement and lateral wall deflection in the process of underwater excavation. Results showed that this method was better to control the surface settlement and lateral wall deflection compared with other dewatering excavations. In detail, most of the surface settlement was caused during the dry excavation stage and dewatering excavation stage while the deflection caused by underwater

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Popescu, Florin Dumitru, Sorin Mihai Radu, Krzysztof Kotwica, Andrei Andraș, Ildiko Kertesz Brînaș, and Stela Dinescu. "Vibration analysis of a bucket wheel excavator boom using rayleigh’s damping model." New Trends in Production Engineering 2, no. 1 (2019): 233–41. http://dx.doi.org/10.2478/ntpe-2019-0024.

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Abstract For the ERc 1400-30/7 type bucket wheel excavator (BWE) used in various Romanian open pit mines, a virtual model of the boom was constructed in SolidWorks. On this model, the variable in time forces acting during the excavation process were simulated, and the time history analysis (time response) was performed. This dynamic time response analysis was performed for excavation of homogenous material only, considering the damping as being of Rayleigh’s type, where the damping matrix is a linear combination of the mass and stiffness matrices. Based on the conducted analysis, the displacem

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V, Musiiko, Koval A, and Patsora D. "WAYS TO INCREASE THE PRODUCTIVITY IN CONTINUOUSLY OPERATING TRENCHING EXCAVATORS." National Transport University Bulletin 1, no. 50 (2021): 132–43. http://dx.doi.org/10.33744/2308-6645-2021-3-50-132-143.

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The article considers and reasons the ways and possibilities to create the highly efficient constructions of trenching excavators that dig trenches of the defined profile by means of using bucketless rotors as soil excavating implements together with design of the discharge assembly improved construction. Study objective: to create a bucketless highly efficient rotary implement of the trenching excavator with two-stage discharge. Study object: continuously operation earthmoving machines. Research technique – analytical-experimental. One of the most important problems for the machine-building i

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Ermakov, Valentin A., and Ekaterina I. Belova. "Technological solutions for excavation works in the process of implementation of the “top-down” approach." Stroitel'stvo: nauka i obrazovanie [Construction: Science and Education] 12, no. 4 (2022): 23–32. http://dx.doi.org/10.22227/2305-5502.2022.4.2.

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Introduction. Underground space development in the course of infill construction in confined spaces of megalopolises is a promising development trend in construction. To save the workspace, the “top-down” approach can be used. In this case, a substantial portion of the underground work consists in the soil development and loosening under the protection of beams, which is relevant for frozen soils in Central Russia. The analysis of regulatory documents and the studies, conducted in this area, has proven that there are no methodological recommendations on the arrangement of soil excavation in co

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Lukashuk, Olga, Konstantin Letnev, and Anatoliy Komissarov. "Efficiency increase in excavation control as primary reserve of performance increase for open-pit excavators." MATEC Web of Conferences 224 (2018): 02028. http://dx.doi.org/10.1051/matecconf/201822402028.

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It is shown that controlling excavation of rock mass using an open-pit excavator with a front shovel as its operational equipment is quite a difficult task due to the complexity of control under almost nonstop adjustment of velocities of working motions (hoisting and thrusting). It was established that operation parameters of the main mechanisms depend on the type of path of motion and position of the bucket in the excavator’s work area. The process of excavation was algorithmically described, and kinematic transfer functions for the operational equipment mechanism were determined, characteriz

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Lee, Yu-Lin, Wen-Kuei Hsu, Pei-Wen Hsieh, Chi-Huang Ma, Ming-Yi Lin, and Chi-Min Lee. "Mechanical Behavior Analysis of Excavation and Retaining Piles in Gravel Formation along Adjacent Railways: A Comparative 3D FEM Study with Monitoring Data." Applied Sciences 13, no. 1 (2022): 397. http://dx.doi.org/10.3390/app13010397.

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Carrying out underground excavation work with retaining pile supports adjacent to a running railway is a risky and cautious job. To evaluate the safety and practicability of underground excavation, a three-dimensional finite element program was developed and used in this study to simulate and analyze the mechanical behavior of the gravel layer in response to excavation to serve as the design for retaining piles as supports. Monitoring instruments (such as inclinometers and subsidence observation points on railway track surfaces) were installed during construction to provide immediate monitorin

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Zhang, Jiao. "Analytical Hierarchy Process Applied to Risk Analysis of Deep Excavation." Advanced Materials Research 250-253 (May 2011): 1646–50. http://dx.doi.org/10.4028/www.scientific.net/amr.250-253.1646.

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The application of the analytical hierarchy process (AHP) to the risk analysis of deep excavation was investigated. Firstly, the occurring probabilities of various risk factors during deep excavation were calculated. Secondly, the aftereffects of the risks were concluded by consulting the experts. Thirdly, the weight of each risk factor was obtained by AHP. Finally, the total risk of deep excavation could be evaluated by fuzzy complex evaluation. This risk analysis method was applied to evaluate the total risk of a real deep excavation, and the exemplification verified its feasibility.

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Huang, Jie, Zeping Yang, and Qinyue Lin. "Experimental Investigation on Deformation Characteristics of Strutted U-Shape Sheet Pile Flexible Retaining Structures in Excavations Using 3D Printing." Applied Sciences 13, no. 14 (2023): 8163. http://dx.doi.org/10.3390/app13148163.

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U-shape steel sheet piles are widely used in deep and large excavation engineering due to their excellent soil-retaining and water-stopping performances. To achieve deformation control in excavations, an experimental investigation on the deformation characteristics of a strutted U-shape sheet pile flexible retaining structure was conducted. Single-layer and double-layer strutted retaining structure excavation indoor model tests in sand, where U-shape sheet piles were formed by 3D printing, were successfully accomplished. Deformation was monitored in real time during the test. The results show

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Zhang, Xue Fu, and Jia Xiang Liu. "Study on Excavation Method of Tunnel with Super Cross-Section and Super Large Section Area Underpass Extra-High Building." Advanced Materials Research 250-253 (May 2011): 2057–67. http://dx.doi.org/10.4028/www.scientific.net/amr.250-253.2057.

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Because double side drift excavation method named eye excavation method has been a mature and reliable excavation method, it has normally been used in tunnels with super cross-section and super large section area. However, the construction speed using this method is very slow. One of reasons is that the construction technology of this method would be more and complex. The other is that all construction workers, materials, equipment would be extremely difficult for their up and down, and that the ballast rock would have to be moved by artificial when the upper step of the middle guide hole woul

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Liu, Zhen, Cui Ying Zhou, Heng Chen, and Li Guo Dong. "3D Visualization Technology for the Influence on the Surrounding Environment Caused by Excavation." Advanced Materials Research 243-249 (May 2011): 3098–104. http://dx.doi.org/10.4028/www.scientific.net/amr.243-249.3098.

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On the basis of visualization of 3D stratum, deep excavation simulation is accomplished by combining with numerical analytical method, Excavation effect on surrounding environment is analyzed. By using experimental or semi-experimental models, the settlement values and their distribution features, which are caused by excavation, are discussed, by using 3D FEM, the horizontal displacement of excavated foundation ditch is calculated, and the OpenGL technology and triangle split arithmetic are chosen to implement the construction and splitting of 3D strata, the excavating process and its influenc

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Zheng, Yuchao, Jianyong Lei, Fei Wang, Liang Xiang, Jianfeng Yang, and Qingshuai Xue. "Investigation on Dewatering of a Deep Shaft in Strong Permeable Sandy Pebble Strata on the Bank of the Yellow River." Geofluids 2021 (September 24, 2021): 1–15. http://dx.doi.org/10.1155/2021/9994477.

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This paper reports the dewatering scheme of a deep excavation in sandy pebble strata. The excavation is in high permeability strata and is close to the Yellow River, making the dewatering difficult during construction. At present, few researchers have specially studied the dewatering scheme of deep excavations in strong permeable strata near the water resource. Field pumping test was conducted before the excavation activity, and the permeability coefficient of the strata was obtained by reverse analysis. According to the characteristics of the project, the dewatering scheme of “ waterproof cur

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Chen, Shangrong, Jifei Cui, and Fayun Liang. "Case Study on the Deformation Coupling Effect of a Deep Foundation Pit Group in a Coastal Soft Soil Area." Applied Sciences 12, no. 12 (2022): 6205. http://dx.doi.org/10.3390/app12126205.

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Simultaneous construction of adjacent projects may lead to emergencies in a foundation pit group, which significantly affects the deformation and safety of foundation pits. In this study, the deformation characteristics of a deep foundation pit group and the mutual interactions among the adjacent foundation pits were observed by a monitoring system during excavation. Field data of the foundation pit group, including the lateral deflections of the enclosure pile, the ground subsidence, as well as the vertical column movements, were analyzed and compared with individual excavations in Shanghai.

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Raimzhanov, B. R., A. R. Khasanov, and R. R. Vakhitov. "The Study of Parameters of Quarry Faces in Muruntau and Myutenbai Open Pits in Case of Applying Major Blasts." Mining science and technology 4, no. 1 (2019): 4–15. http://dx.doi.org/10.17073/2500-0632-2019-1-4-15.

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The paper presents process layouts for excavation of zones near pit envelope based on the analysis of findings of the ore loss study in case of open-pit mining, as well as the results of field measurements in the quarry faces in Muruntau and Myutenbai open pits. In the course of the field measurements, parameters of the quarry faces at Muruntau and Myutenbai open pits were determined under the following working conditions of an excavator: at full bench with shotpile height of 19–21 m; at full bench with shotpile height of 12–14 m at excavation of the “blast cap”; at heading face and taking ram

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Musiiko, Volodymyr, Andrii Koval, Yuri Lazaruk, and Yuri Pasenko. "INCREASING THE EFFICIENCY AND EXPANDING THE TECHNOLOGICAL CAPABILITIES OF THE UNIVERSAL EARTH-MOVING MACHINERY BY IMPROVING THE KINEMATICS OF THE MOVEMENT OF THEIR OPERATING ELEMENT IN THE SOIL." Automobile Roads and Road Construction, no. 114.2 (2023): 230–44. http://dx.doi.org/10.33744/0365-8171-2023-114.2-230-244.

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This article addresses the creation and optimization of designs for Universal Continuous-Action Earthmoving Machines (UCAEM) capable of excavating extensive trenches of various widths, depths, and shapes without structural changes to the operating equipment. The paper provides a detailed rationale for the relevance and practical feasibility of developing continuous-action universal earthmoving machines. Analytically, the required trajectory of movement for the soil excavation operating element of UCAEM in the process of constructing wide trenches (excavations) in the soil is determined. This t

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Xiao, Zun-Qun, Jian Lin, and Dong-Sang Tang. "A Numerical Study of Ground Displacement and Stress Conditions of Small and Medium Circular Diaphragm Wall during Excavation." Advances in Civil Engineering 2022 (June 19, 2022): 1–22. http://dx.doi.org/10.1155/2022/8116804.

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In the present study, a dimensional total-stress elasto-plastic FEM analysis was conducted, which was based on the Mohr-Coulomb constitutive model. The model was combined with a practical engineering case in order to investigate ground displacements and stress conditions during the installations of a medium-sized and a small-sized circular diaphragm wall, as well as the subsequent soil excavations within the walls. The distribution characteristics of the lateral radial displacements and stress conditions in the ground following the wall installations and excavations within the walls were inves

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She, Fang Tao, Sheng Jun Shao, Juan Fang, and Yang Yang Jiao. "Calculation Model for Ground Settlement Process of Xi’an Subway Tunnel Non-Synchronous Excavation with Double-Line." Applied Mechanics and Materials 90-93 (September 2011): 2221–25. http://dx.doi.org/10.4028/www.scientific.net/amm.90-93.2221.

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The current calculation models of ground settlement for tunnel excavation cannot reflect ground settlement of tunnel non-synchronous excavation with double-line. Based on the Peck ground settlement formula and Attewell ground settlement formula, displacement release of excavation place and tunnel non-synchronous excavation with double-line have researched. By means of finding a function to replace the accumulated probability curve, the new control function was beneficial to parameter introduced and improvement of the current ground settlement formula. By introducing the non-synchronous excavat

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Mei, Yuan, Lu Wang, Dongbo Zhou, and Liaoyuan Fu. "Displacement Characteristics of a Deep Excavation in Hangzhou Soft Clay." Advances in Civil Engineering 2022 (March 16, 2022): 1–16. http://dx.doi.org/10.1155/2022/5469471.

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Excavations in a soft soil area are usually associated with substantial difficulties. Taking a special-shaped deep foundation pit in Hangzhou soft clay as the research object, the excavation performances, including groundwater level height, axial force, lateral wall, and soil deflection, and ground surface settlement were monitored and summarized based on the data published in the literature on similar excavations in Hangzhou, P. R. China. The following conclusions are drawn: (1) The axial forces of the struts dynamically change during the excavation and construction or removal of adjacent bra

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Cho, Hanpil. "Review of excavation process about Yu Gwansun." Paek-San Society 113 (March 30, 2019): 53–80. http://dx.doi.org/10.52557/tpsh.2019.113.53.

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Li, Tingting, Min Yang, and Xiaocen Chen. "Lateral Deformation Response of an Adjacent Passive Pile under the Combined Action of Surcharge Loading and Foundation Excavation." Sustainability 15, no. 18 (2023): 13619. http://dx.doi.org/10.3390/su151813619.

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With the increasing development of civil engineering in large cities, more and more excavations and surcharge loadings are being constructed or planned adjacent to existing building piles in crowded urban areas. Previous study on pile deformation has primarily focused on surcharge loading or foundation excavation and given little concern to the combined action of surcharge loading and foundation excavation. The article develops a two-stage process to assess the lateral displacement of nearby pile foundations induced by the combined action of surcharge loading and excavation. Firstly, the local

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Ruan, Yanmei, Xu Luo, Jin Li, et al. "Deformation Law of Tunnels Using Double-Sidewall Guide Pit Method under Different Excavation Sequences." Applied Sciences 13, no. 23 (2023): 12764. http://dx.doi.org/10.3390/app132312764.

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The double-sidewall guide pit method finds extensive application in the construction of large cross-section tunnels in soft rock strata due to its minimal disruption to the surrounding rock, thereby enhancing tunnel stability. To investigate the loading and deformation patterns of the surrounding rock and tunnel support using the double-sidewall guide pit method, this study compares the impacts of various construction sequences on surface settlement, surrounding rock stress, and lining stress using indoor model tests. The experimental results show that after excavating the upper guide hole on

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Yasrebi, Shahab, and Emad Zolqadr. "Numerical modelling for optimizing shoring wall performance in deep urban excavations." IOP Conference Series: Earth and Environmental Science 1336, no. 1 (2024): 012004. http://dx.doi.org/10.1088/1755-1315/1336/1/012004.

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Abstract Soil nailing and anchoring are effective methods for reinforcing the soil in situ, providing internal support that enables the earth to sustain itself during and after excavation. To ensure optimal performance, it is essential to monitor the behavior of the soil nail walls throughout the excavation and after completion, so that the SOE system design can be improved. This study presents a comprehensive survey of the design and performance of soil nail walls in deep urban excavations at depths ranging from 19.5 to 29.3 m. After construction, the lateral deformations of the soil nail wal

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