Results 11 to 20 of about 114,375,636 (265)

Local Stress Field Correction Method Based on a Genetic Algorithm and a BP Neural Network for In Situ Stress Field Inversion

Advances in Civil Engineering, 2021
The in situ stress field is the fundamental factor causing deformation and damage in geotechnical engineering, so it is the main basis for underground engineering design and excavation.
Tianzhi Yao, Zuguo Mo, Li Qian, Jianhua He, Jianhai Zhang   +4 more
doaj   +3 more sources

Intelligent Inversion of Deep In Situ Stress Fields Based on the ABC-SVR Algorithm

Mathematics
Accurate inversion of the deep initial in situ stress field is a fundamental prerequisite for stability analysis of surrounding rock in underground engineering, roadway support design, and prevention and control of dynamic disasters.
Weipeng Gong, Keping Zhou, Xin Xiong, Jun Wei, Feng Gao, Zhuquan Li   +5 more
doaj   +3 more sources

In Situ Stress Measurement and Field Inversion in Deep Surrounding Rock

Mathematics
The in situ stress state of deep surrounding rock is critically important for mine safety and resource extraction. This study focuses on a lead–zinc mine in Yunnan Province, China, with the objective of characterizing the distribution of the deep in situ
Zhilou Feng, Qifeng Guo, Meifeng Cai, Siying Wu, Qingwen Yan, Xianquan Lei, Fei Li   +6 more
doaj   +3 more sources

In-situ stress inversion in Liard Basin, Canada, from caliper logs

Petroleum, 2020
This paper proposes an integrated method of analytical calculation, artificial intelligence, and probabilistic analysis to cost-effectively determine geomechanical properties and in-situ stresses from borehole deformation via caliper logs.
Hongxue Han, Shunde Yin
doaj   +2 more sources

In situ stress determination from inversion of hydraulic fracturing data

International Journal of Rock Mechanics and Minings Sciences, 2011
Abstract The paper presents a new method, based on rigorous principles of mechanics, for determining the in-situ rock stress state based on hydraulic fracturing data. A solution can be obtained from a single data set which includes breakdown pressure, fracture angular position and trace angle.
Jinsong Huang, D V Griffiths
exaly   +3 more sources

Inversion of In-situ stress field in near-fault coal mining area by coupling numerical simulation with deep learning

Geomatics, Natural Hazards & Risk
Understanding the in-situ stress distribution is crucial for coal mine production. In mining area 105 of Yuandian No. 1 Coal Mine, in-situ stress measurements were carried out using the stress relief method.
Rongqin Deng, Yuan Zhang, Dong Wu, Jiakun Lv, Yanan Jing, Zheng Zhen, Peng Shi   +6 more
doaj   +3 more sources

Robust in-situ stress inversion in an underground powerhouse using tensor synthesis and surrogate-assisted differential evolution [PDF]

Scientific Reports
Accurate characterization of the initial in-situ stress field is essential for stability assessment, support design, and surrounding rock control in deep underground engineering, yet field measurements are often highly scattered and three-dimensional ...
Zhihong Dong, Shijie Hu, Yuan Qian, Xinhui Zhang, Ping Fu, Kaicheng Zhang   +5 more
doaj   +2 more sources

Analytical investigations of in situ stress inversion from borehole breakout geometries

Journal of Rock Mechanics and Geotechnical Engineering
This study aims to investigate the feasibility of deriving in situ horizontal stresses from the breakout width and depth using the analytical method. Twenty-three breakout data with different borehole sizes were collected and three failure criteria were ...
Zizhuo Xiang, Taehyun Moon, Joung Oh, Guangyao Si, Ismet Canbulat   +4 more
doaj   +2 more sources

In Situ Stress Inversion in a Pumped-Storage Power Station Based on the PSO-SVR Algorithm

Applied Sciences
An accurate in situ stress field is a prerequisite for evaluating the stability of surrounding rock in underground caverns of a pumped-storage power station (PSPS) and ensuring the long-term safe operation of underground powerhouses.
Lu Liu, Jinhui Ouyang, Genqian Nian, Youping Zhu, Ning Liang   +4 more
doaj   +2 more sources

Anisotropy, focal mechanisms, and state of stress in an oilfield : passive seismic monitoring in Oman [PDF]

, 2005
Knowledge of the spatial characteristics of stress and fractures in reservoirs is important for optimising production and injection processes. Serni-permanent passive microseismic monitoring is being conducted in the Yibal field, Oman, to better ...
Al-Anboori, Abdullah Said
core   +7 more sources