摘要
利用岩层弯曲下沉带内的一条巷道 ,通过设点观测下沉值、量测巷道两帮及顶底移近量 ,结合采面推进速度及矿压观测资料 ,以及FLAC3D的计算机数值模拟计算 ,研究了岩层弯曲下沉带内部巷道的变形和岩层移动规律 ,丰富了上覆岩层移动的佐证 ,在新集矿区获得了岩层内部的移动参数 ,为巷道煤柱的留设提供了直接依据 ,为反程序开采中合理错开上下层的布面时间提供了依据 .
With a roadway within the curve subsidence zone,the rules of over rock moving and roadway deformation are researched by observation of subsidence, the displacement measure of side to side and roof to floor in roadway,combining advance speed of longwall face and abutment pressure information,and FLAC 3D compute simulation.The results have been enriched the data of over strata moving.The roof rock moving parameters are first obtained at Xinji Mine Area,which can provide the directly proof for seam pole of roadway remaining,and for resonable laying face under the anti program mining.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2002年第1期21-25,共5页
Journal of China Coal Society
