Results 1 to 10 of about 118,213,683 (284)

In situ stress inversion using nonlinear stress boundaries achieved by the bubbling method

Journal of Rock Mechanics and Geotechnical Engineering
Due to the heterogeneity of rock masses and the variability of in situ stress, the traditional linear inversion method is insufficiently accurate to achieve high accuracy of the in situ stress field. To address this challenge, nonlinear stress boundaries
Xige Liu, Chenchun Huang, Wancheng Zhu, Joung Oh, Chengguo Zhang, Guangyao Si   +5 more
doaj   +6 more sources

A modified initial in-situ Stress Inversion Method based onFLAC3D with an engineering application

Open Geosciences, 2015
To improve the accuracy of an initial in-situstress field determined by inversion, we describe a modified initial in-situ stress inversion method that uses partialleast-squares regression based on FLAC3D.
Li Yong, Guo Yunhua, Zhu Weishen, Li Shucai, Zhou Hao   +4 more
doaj   +5 more sources

Research on the in-situ stress inversion method of mine based on GA-BP algorithm [PDF]

E3S Web of Conferences, 2022
In-situ stress is the basis for designing mine roadway supports. Firstly, based on the GA-BP algorithm, establish a numerical analysis model, apply orthogonal tests, to establish the relationships between in-situ stress and lateral pressure coefficient ...
Qin Zhongcheng, Li Xiaohe, Liu Yongle, Gao Guanghui   +3 more
doaj   +4 more sources

Study of in situ stress inversion of deeply incised valleys considering the river evolution process [PDF]

Scientific Reports
The study of the in situ stress field is significant for the stability of large underground caverns near deep V-shaped valleys. Tectonic movements, gravity and river erosion have a great influence on the formation of the modern stress field.
Xianliang Wang, Changgui Zhao, Fenyuan Cheng, Zhiwei Ma, Wei Qi, Yinling Dou, Hao Lan, Jianhai Zhang, Benguo He, Lingying Peng, Wei Du   +10 more
doaj   +5 more sources

In situ stress distribution law of fault zone in tunnel site area based on the inversion method with optimized fitting conditions [PDF]

Frontiers in Earth Science, 2023
Tunnel construction in high geo-stress strata faces the risk of extreme natural disasters such as large squeezing deformation and rockburst. Therefore, it is of great significance to adopt a high-precision inversion method to investigate the distribution
Tiansheng Li, Tiansheng Li, Ziquan Chen, Zihan Zhou, Yeming Bao   +4 more
doaj   +5 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   +5 more sources

Research on in situ stress inversion of deep‐buried tunnel based on pressure/tension axis mechanism and geological structure

Deep Underground Science and Engineering, 2023
The investigation of the in situ stress distribution has always been a key condition for engineering design of deep tunnels and analysis of surrounding rock stability.
Guanfu Chen, Xiaoli Liu, Danqing Song
doaj   +3 more sources

Analytical investigations of in situ stress inversion from borehole breakout geometries

Journal of Rock Mechanics and Geotechnical Engineering, 2023
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   +3 more sources

PSO-XGBoost-Based Method for In Situ Stress Inversion

Applied Sciences
To address the limited in situ stress data and poor nonlinear fitting of existing methods, a Particle Swarm Optimization (PSO)–XGBoost inversion approach is proposed.
Shuo Tian, Jian Wang
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   +3 more sources