Coal mine rock stratum mobile control mining-filling-preserving coupled coordination mining method

2013 
The invention discloses a coal mine rock stratum mobile control mining-filling-preserving coupled coordination mining method. Coal pillar preserving-partial filling-partial mining coordination filling mining is implemented, preserved coal pillars are treated as a core, and the preserved coal pillars, a filler and a caving body coordinatively support upside rock to control the mobile deformation value of the rock stratum and the ground surface. A one-side filling mode is characterized in that filling work surfaces and non-filling work surfaces are sequentially arranged at one side of the preserved coal pillars; and a two-side filling mode is characterized in that the filling work surfaces and the non-filling work surfaces are sequentially arranged at two sides of the preserved coal pillars. The filling work surfaces are first mined and then the non-filling work surfaces are recovered, or the filling mining and recovery are simultaneously carried out. The widths of the preserved coal pillars satisfy basic stable requirements; and the widths of the filling work surfaces and the non-filling work surfaces are determined according to extremely-incomplete mining requirements. Compared with strip mining, the method has the advantages of improved coal pillar stress state and increased mining rate because of the coal pillar side filling. Compared with complete mining-complete filling, the method has the advantages of reduced filling amount, enhanced support strengths of the filling body and the coal pillars, improved rock stratum control effect and cost saving.
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