Results 11 to 20 of about 388,680 (332)
International Journal of Coal Science & Technology, 2021 For non-directional drilling cores, selection of samples and the test methods for in situ stress measurements to evaluate the Kaiser effect (KE) were proposed, and the magnitude and direction of the principal stresses were derived from first principles ...
Donghui Yang +4 more
semanticscholar +1 more source
Development and research of in-situ stress parameters database for underground coal mines of China
Meikuang Anquan, 2021 Underground 1379 in-situ stress measurement items in underground coal mines of China was collected, including 928 items of the hydraulic fracturing, 427 items of stress release, 24 items of acoustic emission.
YI Bingding
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Holographic in situ stress measurements [PDF]
Geophysical Journal International, 1986 A new instrument for measuring the in situ level of stress in boreholes has been developed. The instrument operates on the principle of locally relieving the stresses acting on a rock mass by drilling a small hole into the borehole surface and recording the resultant displacement field by holographic interferometry.
Bass, Jay D. +2 more
openaire +2 more sources
Mathematical Problems in Engineering, 2021 We established an evaluation index of the rock mass stress state for underground coal mines using the strength-stress ratio based on the measured in situ stress and the generalized Hoek–Brown strength criterion. Three in situ stress states, σcm/σ1m
Donghui Yang +5 more
semanticscholar +1 more source
DIC-hole drilling method for in-situ residual stress measurement [PDF]
MATEC Web of Conferences, 2019 Residual stress measurement carries an important significance in ensuring safety and reliability of steel structures. In order to simplify the measurement procedure and enhance flexibility of the conventional hole drilling method to adopt in in-situ ...
Peng Yang +3 more
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Buildings, 2023 Aiming at some stress-induced failure phenomena in surrounding rock that occur during the construction of super-long and deep-buried tunnels, a method for estimating the in situ stress in the tunnels based on multivariate information integration is ...
Qitao Pei +5 more
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In-situ stress measurement and inversion analysis of a large hydropower project in southeast Tibet
Dizhi lixue xuebao, 2023 As a control and regulating project, the hydropower station in the Yigongzangbu basin of Tibet plays a vital role in meeting the electricity demand of the Tibetan power grid.
LI Zhengzheng +4 more
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Dizhi lixue xuebao, 2022 Accurately determining the stress state in deep shale reservoirs is the key to the efficient development of shale gas and other unconventional energy sources.
MENG Wen +5 more
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Dizhi lixue xuebao, 2023 The concentration, complexity, and significant anisotropy of in-situ stress make it a pressing and challenging issue in engineering geology safety in strong tectonic activity areas.
TAN Chengxuan +11 more
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Dizhi lixue xuebao, 2023 We carried out hydraulic fracturing in-situ stress measurements in an 1881-m deep borehole at the Shuiwangzhuang gold deposit and obtained the variation law of deep in-situ stress with depth in the mining area.
LIU Luyong +5 more
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