Research on mechanical criterion of formation of separation layer in cover rock |
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| Authors: | ZHANG Wei ZHENG Jin-feng YU Guang-ming XU Yuan-yuan ZHANG Chun-hui |
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| Institution: | 1. Civil Engineering Institute, Qingdao Technological University, Qingdao 266033, China;
2. College of Engineering, Ocean University of China, Qingdao 266071, China |
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| Abstract: | In the mining area, separation layer grouting is an important technology to control the settlement, the formation and situation of separation layer is significant to exert separation layer grouting. The formation of separation layer grout needs three conditions: weaker plane shear failure, terrane integrality and lithology otherness. The criterion of separation layer formation is established from the proceeding conditions and Mohr-Coulomb criterition. The study shows that the formation and situation of separation layer is confirmed by analytic solution or numerical solution. |
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| Keywords: | separation layer grouting weaker plane shear failure terrane integrality lithology otherness Mohr-Coulomb criterition |
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