房式采空区集中煤柱下动载矿压灾害防治技术  

Disaster Prevention of Dynamic Loading Mine Pressure under Central Coal Pillar with Room Goaf

作　　者：商晶志 付兴玉 李凤明[2,3] 李宏艳[2,3] 邓志刚[2,3] 赵善坤[2,3] 李少刚[2,3] 

机构地区：[1]吉林煤矿安全监察局,吉林长春130021 [2]煤炭科学技术研究院有限公司,北京100013 [3]煤炭资源高效开采与洁净利用国家重点实验室(煤炭科学研究总院),北京100013

出　　处：《煤矿开采》2016年第3期112-116,共5页Coal Mining Technology

基　　金：国家自然科学基金面上项目(51174112);国家自然科学基金青年基金项目(51404140)

摘　　要：针对神东矿区石圪台煤矿31201工作面出上覆房式采空区集中煤柱期间的动载矿压问题,通过现场实测及理论分析方法,结合动载矿压发生机理,研究了相应的灾害防治技术。结果表明:出集中煤柱回采期间,超前支承压力使具有有效支撑作用的集中煤柱及前方大面积小煤柱失稳,失稳煤柱覆岩运动使工作面覆岩受到动载荷作用,破坏了工作面覆岩断裂岩块间形成结构的稳定性,从而导致了动载矿压灾害的发生。据此认为,避免工作面覆岩受到动载荷作用是防治该类动载矿压灾害的关键,因此提出了以阻止、促进房式采空区覆岩运动为思路的动载矿压灾害防治措施,以及各措施的现场实施技术要求,并研究了各措施现场实施效果评价方式,现场应用后效果显著。In order to solving the dynamic loading mine pressure of central coal pillar in room goaf of 31201 working face of Shigetai coal mine of Shendong mine distract, on the basis of filed testing and theory analysis, and with occurrence mechanism of dynamic loading mining pressure, corresponding disaster prevention technology was studied. The results showed that central coal pillar and large amount small pillar ahead failed as abutment supporting pressured during mining period of central coal pillar, and overlying strata of working face was influenced by dynamic loading as instability coal pillar, the structural stability that formed by fractured rock blocks in overlying strata was destroyed, then dynamic loading mine pressure disaster appeared. So avoid dynamic loading was key point to pre- vention similar disaster of dynamic loading mine pressure. And then dynamic loading mine pressured prevention methods was put for- ward, which thinking is overlying strata of room goaf movement was prevented and promoted, and all other filed practical technologies, all kinds of filed practical results was evaluated, filed practical results is remarkable.

关 键 词：房式采空区 集中煤柱 煤柱稳定性 动载荷 动载矿压 防治措施 

分 类 号：TD323[矿业工程—矿井建设]