品字形房柱式采空区开采地表移动规律  

The Laws of Surface Movement in the Pin-pillar Style Mining Goaf Area

作　　者：李海清[1] 向龙[1] 贾宏宇[2] 

机构地区：[1]四川省交通厅公路规划勘察设计研究院,成都610031 [2]西南交通大学,成都610031

出　　处：《地下空间与工程学报》2011年第3期541-546,共6页Chinese Journal of Underground Space and Engineering

摘　　要：榆神高速公路全长约88 km,路经5个煤矿采空区。采空区均由品字形房柱式开采而成,埋深介于10至120 m之间,房柱宽度和间距最小为6 m,最大15 m。采用FLAC3D对其中埋深较小的前阳湾煤矿采空区进行模拟,模型开采埋深为地表下17～20 m,研究了品字形房柱式采空区地表移动基本规律、地表动态变形规律以及煤柱的受力情况等。关于房柱式采空区地表移动规律等的研究国内还未见报道,因此本文对以后类似工程具有一定的指导和借鉴意义。Yushen freeway,which passes through 5 mined goafs,is about 88 km long.All the goafs buried underground at a depth of 10 to 120 meters are formed by Pin-pillar style mining.The length between every 2 pillars ranges from 6 to 15 meters.Taking Qianyangwan mine goaf,a relatively shallow one,as an example,this paper employs FLAC3D to study the general laws of its surface movement,dynamic deformation,and capacity of the pillars.There is few research on the laws of surface movement of Pin-pillar style mined goaf area at home or abroad,so this paper may serve as a reference for the similar projects in future.

关 键 词：房柱式采煤 地表移动 动态变形 煤柱受力 

分 类 号：TD821[矿业工程—煤矿开采]