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机译:Mechanical model and numerical simulation of the formation of karst collapse columns in the Huainan coalfield of Northern China
Anhui Univ Sci & Technol||Anhui Univ Sci & Technol;
Anhui Univ Sci & Technol;
Huainan Min Grp Co Ltd;
Karst collapse columns (KCCs); roof collapse; formation mechanism; cave; 3DEC;