浅埋深综放开采下地表沉陷实测规律研究

Study of Surface Subsidence Actual Measurement Law of Fully Mechanized Coal Mining Working Face in Shallow

为揭示浅埋综放开采条件下地表沉陷规律和为工业广场建(构)筑物附近工作面安全开采提供依据,在阳湾沟煤矿6204工作面上方设置地表移动观测站进行观测研究。结果表明:浅埋综放开采条件下地表沉陷规律总体符合一般沉陷规律,但地表移动变形主要集中在采空区上方,且伴随永久裂缝;工作面推进过程中,地表移动和变形总体上是连续渐变的,但在地表下沉某个过程存在突变现象,下沉增加很快;地表移动活跃期下沉量集中,占全部下沉量的94%。

In order to reveal surface subsidence law under fully mechanized coal mining in shallow and references for working face safety mining around building of surface plant.Surface movement observation station was set above 6204 working face of Yangwangou coal mine.The results showed that surface subsidence law of top coal caving mining in shallow conformed to general subsidence law,but surface movement deformation was mainly appeared above goaf area,and also accompany with perpetual fracture,during working face advanced process,surface movement and deformation was generally gradually variation,but some jumping appeared during one process of surface subsidence,subsidence increment quickly,subsidence deflection during active phase of surface movement was about 94%of totally subsidence.