Results 11 to 20 of about 218,898 (267)
Frontiers in Earth Science, 2022 A geometric equation of borehole deformation under stress was deduced based on the basic theory of elasticity. Subsequently, we established the quantitative relationship between the in situ stress and geometrical parameters of borehole deformation ...
Xinxin Fang +4 more
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Energy Science & Engineering, 2021 The current in situ stress regime is of great significance to the exploration and development of coalbed methane (CBM). In this study, the vertical stress (σV), maximum horizontal principal stress (σH), and minimum horizontal principal stress (σh) in the
Xiaojie Fang +5 more
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Energy Science & Engineering, 2023 With the development of shale gas exploration in China, the use of conventional logging tools has been introduced, and cross multipole array acoustic logging tools have gradually been used to determine the stress orientation in shale.
Haimeng Yang +5 more
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Dizhi lixue xuebao, 2023 In order to obtain the in-situ stress field characteristics and analyze tectonic stability in the Motuo key area of the eastern Himalayan syntaxis, the in-situ stress measurement of one in-situ stress hole and 11 test sections of the Xirang section of ...
ZHANG Bin +7 more
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Energy Generation and Attenuation of Blast-Induced Seismic Waves under In Situ Stress Conditions
Applied Sciences, 2022 During blasting in deep mining and excavation, the rock masses usually suffer from high in situ stress. The initial seismic energy generated in deep rock blasting and its attenuation with distance is first theoretically analyzed in this study.
Jianhua Yang +3 more
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Heterogeneity of in situ stress: A Review [PDF]
IOP Conference Series: Earth and Environmental Science, 2021 Abstract Campaigns to determine the state of in situ stress form an integral part of almost all underground rock engineering projects, but stress measurements obtained at different locations on a project site generally display spatial variability.
M A Javaid, J P Harrison
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Research on variation law of secondary stress on working face of Guotun Coal Mine
Gong-kuang zidonghua, 2017 For deformation and failure situation of roadway on 1304 working face of Guotun Coal Mine, the secondary stress of the working face was measured. Three monitoring drills were constructed at one point of the roadway on 1304 working face, and four HI ...
JIANG Zilong, CHEN Wenlong, LIU Youjian
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Journal of Civil Engineering and Management, 2021 Breakout is a shear failure due to compression that forms around the borehole due to stress concentration. In this paper, the breakout theory model is investigated by combining the equilibrium elasticity equations of stress around the borehole with two ...
Ali Lakirouhani +3 more
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Energy Science & Engineering, 2023 Matrix acidizing is widely used to enhance oil/gas production in the exploitation of carbonate reservoirs. In this work, a three‐dimensional (3D) hydro‐chemical‐thermal (H‐C‐T)‐coupled model was presented to improve the understanding of the acidizing ...
Anbang Guo +4 more
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Frontiers in Earth Science, 2022 The Kuqa Depression boasts rich cretaceous ultra-deep hydrocarbon resources. However, it is in complex geological conditions. At present, sufficient understandings on the in situ stress distribution and influencing factors are lacking, which restricts ...
Ke Xu +11 more
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