Results 21 to 30 of about 118,213,683 (284)

Inversion Method of Initial In Situ Stress Field Based on BP Neural Network and Applying Loads to Unit Body

Advances in Civil Engineering, 2020
The initial in situ stress field is the fundamental factor causing the deformation and failure of underground engineering and is an important basis for the feasibility analysis, design, and construction of underground engineering.
Xiaopeng Li, Xuejun Zhou, Zhengxuan Xu, Tao Feng, Dong Wang, Jianhui Deng, Guangze Zhang, Cunbao Li, Gan Feng, Ru Zhang, Zhilong Zhang, Zetian Zhang   +11 more
doaj   +2 more sources

Determination of In Situ Stress by Inversion in a Superlong Tunnel Site Based on the Variation Law of Stress — A Case Study

KSCE Journal of Civil Engineering, 2023
The Sejila tunnel, part of the Sichuan-Tibet railway, is in a complex geostress environment because of its deep burial depths and tectonic movement.
Helin Fu, Jie Li, Guoliang Li, Jingju Chen, Peng-Tao An   +4 more
semanticscholar   +2 more sources

Understanding the Distribution Laws of In Situ Stress in Mines Based on Global Positioning System Data and Numerical Simulation Analysis

Geofluids, 2023
To ensure safe exploitation of the Muduchaideng Mine, we use a numerical simulation to invert the in situ stress field based on observation data from GPS stations, investigate differences in movement velocities at different locations, and analyze the ...
Wentao Liu, Zhongyou Zheng, Lei Zhu, Kai Xu, Chengyong Liu, Yuyi Wu, Shunzhen Hu   +6 more
doaj   +2 more sources

Geomechanical Modeling and Inversion Analysis of the in-situ Stress Field in Deep Marine Shale Formations: A Case Study of the Longmaxi Formation, Dingshan Area, China

Frontiers in Earth Science, 2022
Based on the comprehensive analysis of wellbore characteristics in a deep shale gas field, the in-situ stress state of the shale reservoir was assessed in this study for the Longmaxi formation in the Dingshan area, Southwestern China.
Qinjie Liu, Qinjie Liu, Qiang Fu, Qiang Fu, Ke Yang, Ke Yang, Ke Yang, Quanchao Wei, Huihu Liu, Haibo Wu   +9 more
doaj   +2 more sources

Correction of Surface Tensile Stress in In-situ Stress Field Inversion Using the Virtual Measuring Point Method

Journal of Physics: Conference Series
Surface tensile stress anomalies frequently arise during in-situ stress field inversion via multiple linear regression, compromising result reliability.
Yue Liu, Yong Xia, Ren-Kun Wang, Wen-Tao Zhou, Hong-Ze Zhu, Kai Su   +5 more
semanticscholar   +2 more sources

Inversion Analysis of Stress Fields Based on the LSTM–Attention Neural Network

Applied Sciences
Conventional geostress methods of measurement cannot reveal an accurate geostress field distribution in an engineering area, limited by both cost and prevailing geological conditions. This study introduces an improved LSTM–Attention neural network for in
Jianxin Wang, Liming Zhang, Junyu Sun
doaj   +2 more sources

Prediction and classification technology of rockburst hazard in deep buried and high in-situ stress tunnel

Scientific Reports
With the increasing number of deep-buried tunnel constructions in China, the possibility of rockburst hazard during tunnel construction in high-stress, hard rock environments also rises.
Hui Li, Youjie Yang, Zhiqiang Zhang, Li Tang   +3 more
doaj   +2 more sources

Research into using a fiber Bragg grating sensor group for three-dimensional in situ stress measurement [PDF]

Geoscientific Instrumentation, Methods and Data Systems, 2022
The observation and estimation of the deep crustal stress state is a key and difficult problem for in situ stress measurement. Using a borehole wall strain gauge based on the overcoring stress-relieving method is one of the main methods of in situ stress
Y. Liu, Y. Liu, Y. Liu, Z. Hou, H. Zhou, G. Gao, L. Yang, L. Yang, P. Wang, P. Wang, P. Wang   +10 more
doaj   +1 more source

3D In Situ Stress Estimation by Inverse Analysis of Tectonic Strains [PDF]

Applied Sciences, 2021
The determination of a 3D engineering-scale in situ stress field is essential in underground rock mechanics and engineering. The inverse analysis method is a useful technique to determine the in situ stress around the zone of interest. This paper presents a new approach with tectonic strains based on traditional stress-based or displacement-based ...
Guo, Mingwei, Yin, Shunde, Li, Chunguang, Wang, Shuilin   +3 more
openaire   +2 more sources

In-situ stress measurement and inversion analysis of the deep shaft project area in Sanshan Island based on hydraulic fracturing method

Dizhi lixue xuebao, 2023
The proposed 2000-meter-deep auxiliary shaft at the Xiling mine, Sanshan Island, Shandong Province, is an ultra-deep shaft construction project. Revealing the characteristics of the in-situ stress field in the shaft construction area is one of the ...
ZHU Mingde, WANG Zhaoya, ZHANG Yuezheng, LI Wenguang, HOU Kuikui, JI Hongguang, YIN Yantian, FU Zhen, HAO Yingjie   +8 more
doaj   +1 more source