Results 41 to 50 of about 503 (252)
GeotechnicsGeotechnical centrifuge modeling is a powerful tool for investigating the behavior of geo-structural systems under realistic stress conditions. To accurately replicate the radial nature of the centrifugal acceleration field, the model surface is often ...
Mohamed A. ElGhoraiby, Majid T. Manzari
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Temperature‐dependent shear behavior and constitutive model of the rock–concrete interface
Deep Underground Science and Engineering, EarlyView.Shear tests were conducted to investigate the temperature‐dependent shear behavior of the rock–concrete interface, highlighting the interaction between the surrounding rock and the lining during tunnel fires. Under experimental conditions, concrete exhibited greater temperature sensitivity than rock, with the shear fracture surface transitioning from ...
Hongbin Chen +6 more
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Yantu gongcheng xuebaoThe geotechnical centrifuge test can restore the real stress field in the small-scale model, and provides an effective research method for investigating the slurry fracturing phenomenon of the shield tunnel face. There are several factors involved in the
LUO Weiping 1, 2, 3, LEE Fook Hou 3, YUAN Dajun 1, ZHU Hehua 2
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Deep Underground Science and Engineering, EarlyView.This paper investigates the high‐pressure water jet‐pick combined rock‐breaking mode (HPC), which employs high‐pressure water jets to precut grooves on both sides of the picks. The rock‐breaking patterns and performance of the HPC method are obtained, and the auxiliary rock‐breaking mechanism of water jet grooving is revealed.
Jingjing Lu +6 more
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Deep Underground Science and Engineering, EarlyView.This study investigates ground subsidence during tunnel excavation in karst areas, highlighting the combined effects of karst cave proximity, cave size, and soil spatial variability. Findings suggest that shorter cave distances and larger cave sizes increase subsidence variability, and a modified Peck formula is proposed for more accurate subsidence ...
Zhenghong Su +4 more
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Deep Underground Science and Engineering, EarlyView.Based on experimental results and theoretical analysis, an established rock damage accumulation model that comprehensively considers the preapplied static load, impact peak value, impact frequency, and impact times. Abstract To study the rock damage mechanism under high static loading and superimposed medium strain rate cyclic impact loading, a series ...
Wei Wang +6 more
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Fiber Bragg grating test system and model tests based on geotechnical centrifuge
Yantu gongcheng xuebao, 2017 The fiber Bragg grating (FBG) sensing technology has many advantages such as associate distribution, high precision, anti-electromagnetic, real-time monitoring, etc., and the sensors can be miniaturized according to monitoring objects.
JIA Li-xiang 1, SHI Bin 1, WEI Guang-qing 2, ZHANG Zheng 1, TONG Heng-jin 2
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Deep Underground Science and Engineering, EarlyView.A novel cavity contraction solution and multilayer shaft wall model were developed to analyze deep shaft stability, considering rock viscosity, support structures, and water pressure, with successful validation through a Hulusu Coal Mine case study.
Bin Chen +5 more
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Yantu gongcheng xuebao, 2018 The advantage of geotechnical centrifuge modelling is founded on the exactly similar stress levels and distribution between models and prototypes. To recognize the differences and characterization parameters of stress similitude of model and prototype is
WANG Yong-zhi , WANG Hai , YUAN Xiao-ming , DUAN Xue-feng
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Partial reactivation of a huge deep-seated ancient rock slide: recognition, formation mechanism, and stability [PDF]
Natural Hazards and Earth System Sciences, 2016 About 18 years ago, a large-scale discontinuous layer in properties and colour was found in the new Fengjie town at the shore of the Three Gorges Reservoir area in China. There are many resettled residents and buildings on the sloping area, the safety of
M. Tang +5 more
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