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- W2390553422 abstract "In terms of the complex mining geological conditions of a gentle inclined multi-seam,this study uses a three-dimensional finite element numerical analysis software to establish a three-dimensional geological model under the different mining conditions.Considering the fault effect,the study calculates the multi-seam roof strata movement and surface subsidence caused by different mining conditions.The subsidence distribution curve of the reference points at surface and multi-seam roof strata under the different working conditions is obtained.The maximum,minimum settlement,differential settlement and the principal stress,shear stress value of surface and multi-seam roof strata after mining is also obtained.The results show that a little change of maximum surface subsidence and differential settlement is caused by extracting 3101 3102 faces simultaneously or mining 3101 or 3102 faces in a delayed time.The maximum surface subsidence,the surface settlement differences are 520mm,498mm,515mm and 59mm,78mm,81mm respectively.The results provide a quantitative basis for studying the gently inclined coal seam surface deformation caused by mining.It provides a useful reference for reasonable,safe,economic extraction of inclined multi-seam mining under similar conditions." @default.
- W2390553422 created "2016-06-24" @default.
- W2390553422 creator A5090036170 @default.
- W2390553422 date "2013-01-01" @default.
- W2390553422 modified "2023-09-25" @default.
- W2390553422 title "Numerical simulation of rock displacement and deformation characteristics of a gentle inclined multi-seam roof strata" @default.
- W2390553422 hasPublicationYear "2013" @default.
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