Results 21 to 30 of about 115,032,361 (201)

Energy Generation and Attenuation of Blast-Induced Seismic Waves under In Situ Stress Conditions

Applied Sciences, 2022
During blasting in deep mining and excavation, the rock masses usually suffer from high in situ stress. The initial seismic energy generated in deep rock blasting and its attenuation with distance is first theoretically analyzed in this study.
Jianhua Yang, Jinshan Sun, Yongsheng Jia, Yingkang Yao   +3 more
doaj   +1 more source

In-situ Stress Analysis and Rockburst Risk Assessment of Liupanshan Tunnel of Bailong River Water Diversion Project [PDF]

长江科学院院报
[Objective] Taking the deeply buried Liupanshan tunnel of the Bailong River Diversion Project as the research background, this study aims to systematically investigate the distribution characteristics of the in-situ stress field along the tunnel ...
DONG Zhi-hong, JIANG Jian, ZHANG Xin-hui, ZHOU Chao, ZUO Qing-jun
doaj   +1 more source

Toughening mechanisms in nacre-like alumina revealed by in-situ imaging of stress [PDF]

, 2022
Nacre-like aluminas are bio-inspired, ceramic-based composites that display high toughness and strength. Their toughness arises from their brick-and-mortar microstructure.
Hassan, Saad, Annie, Malchère, Bruno, Reynard, Thierry, Douillard, Sylvain, Deville, Sylvain, Meille, Philippe, Steyer   +6 more
core   +1 more source

Comparison of predicted failure area around the boreholes in the strike-slip faulting stress regime with Hoek-Brown and Fairhurst generalized criteria

Journal of Civil Engineering and Management, 2021
Breakout is a shear failure due to compression that forms around the borehole due to stress concentration. In this paper, the breakout theory model is investigated by combining the equilibrium elasticity equations of stress around the borehole with two ...
Ali Lakirouhani, Mohammad Bahrehdar, Jurgis Medzvieckas, Romualdas Kliukas   +3 more
doaj   +1 more source

Three‐dimensional simulation of the acidizing process under different influencing factors in fractured carbonate reservoirs

Energy Science & Engineering, 2023
Matrix acidizing is widely used to enhance oil/gas production in the exploitation of carbonate reservoirs. In this work, a three‐dimensional (3D) hydro‐chemical‐thermal (H‐C‐T)‐coupled model was presented to improve the understanding of the acidizing ...
Anbang Guo, Xuhai Tang, Jiangmei Qiao, Linbo Zhou, Pandeng Luo   +4 more
doaj   +1 more source

In Situ Stress Distribution in Cretaceous Ultra-Deep Gas Field From 1D Mechanical Earth Model and 3D Heterogeneous Geomechanical Model, Kuqa Depression, Tarim Basin, NW China

Frontiers in Earth Science, 2022
The Kuqa Depression boasts rich cretaceous ultra-deep hydrocarbon resources. However, it is in complex geological conditions. At present, sufficient understandings on the in situ stress distribution and influencing factors are lacking, which restricts ...
Ke Xu, Hui Zhang, Ruixia Dong, Wei Ju, Yani Xie, Deyu Cui, Lu Fang, Fang Yuan, Shujun Lai, Jingrui Liang, Wei Zhang, Bin Zhao   +11 more
doaj   +1 more source

Early identification on failure mode of loess landslide: insight from case study and physical model experiment

Frontiers in Earth Science
IntroductionThe Loess Plateau has long been plagued by cascading loess landslides. The rapid identification of these landslides, along with the accurate determination of their failure modes, is essential for conducting precise disaster assessments in the
Ran Li, Ran Li, Ran Li, Jiangkun He, Han Zheng, Chenyuan Zhang, Shuai Zhang, Shuai Zhang, Shuai Zhang   +8 more
doaj   +1 more source

Inversion Analysis of the In Situ Stress Field around Underground Caverns Based on Particle Swarm Optimization Optimized Back Propagation Neural Network

Applied Sciences, 2023
The in situ stress distribution is one of the driving factors for the design and construction of underground engineering. Numerical analysis methods based on artificial neural networks are the most common and effective methods for in situ stress ...
Hong-Chuan Yan, Huai-Zhong Liu, Yao Li, Li Zhuo, Ming-Li Xiao, Ke-Pu Chen, Jia-Ming Wu, Jian-Liang Pei   +7 more
doaj   +1 more source

Estimate the In-situ Earth Pressure in a Thrust Fault Zone by Vertical Cut [PDF]

, 2013
The tension crack appears at the ground surface acompanied by excavations in soils. The development of tension crack is depended upon the horizontal earth pressure exerted on the soils.
楊長義
core   +1 more source

In-situ stress characteristics and rockburst prediction for a tunnel in a high in-situ stress environment

Frontiers in Earth Science
As the main source of pressure around tunnel rock masses, in-situ stress must be thoroughly understood to accurately predict the potential for rockburst events, especially in high-stress construction environments.
Chun Luo, Zhiwen Shen, Jin Zhang, Maohong Yao, Ying Yang, Kai Zhang, Meng Wang, Shuang Yang, Yonggang Zhang   +8 more
doaj   +1 more source