The invention provides an isolated grouting-filling mining method for
overburden rock without village migration under
cut-side local pressed-
coal conditions. The method comprises the following steps: according to the geological information of a mine and geographical position of a village, determining distance between the
boundary line of a protective
coal pillar at the
cut side of a working face and a
cut, determining sufficient mining distance in the direction of the working face, and comparing the distance with the sufficient mining distance so as to determine an isolated grouting-filling
control area for the
overburden rock; drilling a plurality of inlet wells in the
control area towards a
coal bed direction, wherein the final hole depth of the inlet wells is 15 to 40 times higher than the coal
bed mining height above the coal
bed; and when the coal face is mined to 10 to 30 m away from the inlet wells, injecting coal ash
slurry in
abscission zones in the rock strata above the coal face through the inlet wells until the grouting-filling
control area is mined in the coal face, and completing grouting-filling coal-mining at the cut side. The method is applicable to mining of cut-side local pressed coal and can reduce loss of cut-side pressed coal and improve a mining rate; and compared with a full-working face isolated grouting-filling mining method for
overburden rock, the method provided by the invention has the advantages of a small filling amount, low filling cost,
good control effect on surface
subsidence, and capacity of realizing
coal mining without village migration under cut-side pressed-coal conditions.