Study on Microcracks Propagation of Shale Under Tensile and Shear Loading at Different Confining Pressures
Source abstract
Abstract
To understand the macroscopic fracture behavior of shale under different confining pressures, it is necessary to study the process of microcrack propagation from a microscopic perspective. In this study, a cohesive zone model for heterogeneous shale based on mineral distribution was constructed. Numerical simulation experiments were conducted under different confining pressures to investigate the effects of confining pressure on the extension of microcracks under tensile and shear loading from three perspectives: microcrack morphology, acoustic emission characteristics, and mechanical responses of different minerals. This study reveals the influence of different confining pressures on the extension of microcracks under tensile and shear loading conditions in shale and their microscopic mechanisms, which holds theoretical and practical significance for the exploitation of deeply buried shale gas.
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Research context
OpenAlex topics: Rock Mechanics and Modeling · Hydrocarbon exploration and reservoir analysis · Coal Properties and Utilization
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Disaster Prevention and Reduction Engineering, Institute of Disaster Prevention, Sanhe 065201, China
Hebei Key Laboratory of Earthquake Disaster Prevention and Risk Assessment, Sanhe 065201, China
College of Energy and Mining Engineering, Shandong University of Science and Technology, Qingdao 266590, China
Fujian Xiamen Institute of Geological Engineering, Xiamen 361008, China
Key Laboratory of Deep Petroleum Intelligent Exploration and Development, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China
College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
School of Earth Science and Engineering, Hebei University of Engineering, Handan 056038, China
Funding
Hebei Natural Science Foundation · Fundamental Research Funds for the Central Universities · Langfang City Science and Technology Support Plan Project
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