条带煤柱膏体充填开采覆岩运动物理模拟试验研究  

Experimental Study on the Movement Law of Overburden Strata during Strip Pillar Mining with Pillar Paste Backfilling by Physical Simulation

作　　者：李杨杨[1] 陈海瑞 郑勇 江宁[1] 

机构地区：[1]山东科技大学矿山灾害预防控制教育部重点实验室,山东青岛市266590 [2]淄博矿业集团有限责任公司岱庄煤矿,山东济宁市272175 [3]济宁能源发展集团有限公司阳城煤矿煤矿,山东济宁市272502

出　　处：《矿业研究与开发》2013年第5期18-20,39,共4页Mining Research and Development

基　　金：国家自然科学基金项目(51274132);山东科技大学研究生科技创新基金资助项目(YCA120302)

摘　　要：通过对膏体充填材料性能的研究,优化了膏体充填相似材料的配比,研制了实验室充填设备。以岱庄煤矿膏体充填开采为背景,考虑充填体强度变化过程,运用相似材料实验,研究了充填工作面覆岩的运动规律与充填体受压变形的过程。结果表明:矸石膏体充填开采充填体率为95%时,垮落法开采的直接顶R1、R2转换成基本顶,在推进方向上保持力的传递,并且R1、R2岩层运动具有一定的规律性;充填开采初期,上覆岩层是由煤柱和工作面煤壁支撑,R1、R2岩层初次断裂后,形成"煤柱—充填体—煤壁"共同支护顶板的结构,该结构体系可有效控制开采沉陷。模拟研究结果与现场实测相吻合。By researching the performance of paste filling ma- terials, the ratio of similar materials for paste filling was op- timized, and the filling equipment in laboratory was devel- oped. Taking the mining with paste filling in Daizhuang Coal Mine as background, considering the change of backfill strength, by similar material simulation test, the movement law of overburden strata and the process of backfill deforma- tion under press were studied in Daizhuang coal mine. The results showed that when the filling rate was 95 ~, immedi- ate roof R1 and R2 at caving face could be converted to basic roof and could keep force transfer along the advancing direc- tion of working face, the movement of the strata R1 and R2 was regular. At the primary stage of mining with filling the overburden strata was supported by coal pillar and coal wall, but after the first fracture of R1 and R2 was supported by he structure of ＂ coal pilla^filling body-coal wall＂ which can control mining subsidence effectively. The simulation results coincided with measured results.

关 键 词：膏体充填开采 动态模拟 充填率 条带煤柱 覆岩运动 

分 类 号：TD823.6[矿业工程—煤矿开采]