Results 21 to 30 of about 519,341 (276)

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

Journal of Physics: Conference Series
Abstract Surface tensile stress anomalies frequently arise during in-situ stress field inversion via multiple linear regression, compromising result reliability. To resolve this, we propose a novel method integrating distributed surface virtual measuring points with zero stress components.
Yue Liu, Yong Xia, RenKun Wang, WenTao Zhou, HongZe Zhu, Kai Su   +5 more
openaire   +2 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   +2 more sources

Mechanism of coal mass fracture expansion under drilling and pressure relief [PDF]

Scientific Reports
To clarify the nonlinear transformation of coal from elastic energy storage to macroscopic fracture under borehole unloading, this study develops a multistage loading–unloading experimental system, incorporates acoustic emission monitoring, and utilises ...
Kun Liu, Yang Liu, Cai-Ping Lu, Lu-Hao Zhou, Qi-Xiang Zhou, Chao Wang   +5 more
doaj   +2 more sources

Research on stress field inversion and large deformation level determination of super deep buried soft rock tunnel. [PDF]

Sci Rep
Understanding the characteristics and distribution patterns of the initial geo-stress field in tunnels is of great significance for studying the problem of large deformation of tunnels under high geo-stress conditions.
Zhang B, Tan Z, Zhao J, Wang F, Lin K.
europepmc   +2 more sources

Volcano-tectonic interactions revealed by inversion of focal mechanisms: stress field insight around and beneath the Vatnajökull ice cap in Iceland

Frontiers in Earth Science, 2014
Volcano-tectonic processes in the central part of Iceland, covered by the Vatnajökull glacier, are investigated by inversion of focal mechanisms. Working on a large catalogue of focal mechanisms determined by the Icelandic Meteorological Office, we used ...
Romain ePlateaux, Romain ePlateaux, Nicole eBethoux, Françoise eBERGERAT, Bernard eMercier De Lépinay   +4 more
doaj   +2 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   +2 more sources

Microseismic Monitoring at the Farnsworth CO₂-EOR Field

Energies, 2023
The Farnsworth Unit in northern Texas is a field site for studying geologic carbon storage during enhanced oil recovery (EOR) using CO2. Microseismic monitoring is essential for risk assessment by detecting fluid leakage and fractures.
Yan Qin, Jiaxuan Li, Lianjie Huang, Kai Gao, David Li, Ting Chen, Tom Bratton, George El-kaseeh, William Ampomah, Titus Ispirescu, Martha Cather, Robert Balch, Yingcai Zheng, Shuhang Tang, Kevin L. McCormack, Brian McPherson   +15 more
doaj   +1 more source

Back‐Arc Extension of the Central Bransfield Basin Induced by Ridge–Trench Collision: Implications From Ambient Noise Tomography and Stress Field Inversion

Geophysical Research Letters, 2021
The Bransfield Basin is a young (∼4 Ma) back‐arc basin related to the remnant subduction of the Phoenix Plate that once existed along the entire Pacific margin of the Antarctic Peninsula.
Wei Li, Xiao-Hui Yuan, B. Heit, M. Schmidt-Aursch, J. Almendros, W. Geissler, Yun Chen   +6 more
semanticscholar   +1 more source

Stress inversion based on microseismic monitoring and its engineering application

Yantu gongcheng xuebao, 2021
Determining the stress field environment of rock mass in engineering is the basis of disaster monitoring, disaster warning and its application. A joint iterative inversion method is used to retrieve the stress field based on the focal mechanism.
TANG Chao , LI Shu-lin , ZHOU Meng-jing , LIU Yin-chi
doaj   +1 more source

Inversion of the fine in-situ stress field for deep-buried tunnel: A case study on the Jiangranshan tunnel of the Shuangjiang-Cangyuan express way in southwest Yunnan

Carsologica Sinica, 2023
Under complex geological conditions of fault system, stratum and terrain, an accurate inversion of the in-situ stress field is a challenging and hot issue in the study on engineering geology.
Hongming LI, Weifeng SUN, Hongri ZHANG, Xianghui QIN, Jian FENG, Jianhai WEI, Sulian LAN, Chongyuan ZHANG, Dongsheng SUN   +8 more
doaj   +1 more source