急倾斜煤层充填开采的数值模拟  

Numerical simulation of steep seam backfill mining

作　　者：黄俊[1] 王卫军[1] 王林[1] 张永青[1] 

机构地区：[1]湖南科技大学煤矿安全开采技术湖南省重点实验室,湖南湘潭411201

出　　处：《矿业工程研究》2010年第3期16-19,共4页Mineral Engineering Research

基　　金：湖南省科技厅重点资助项目(2009FJ2005)

摘　　要：建筑物下压煤开采已成为许多矿区面临的主要问题,严重制约着矿区的可持续发展.充填开采是我国建筑物下采煤的主要技术之一,能有效解决煤矿开采造成的环境问题以及最大限度的控制地表沉陷.针对湘潭矿业公司二矿的实际情况,运用RFPA数值模拟软件,分析了急倾斜煤层开采过程中,全部垮落法开采、留区段煤柱开采、区段留煤柱充填开采时煤层顶板及地表的运动规律,计算结果表明,充填开采能改变上覆岩层的运动规律,显著减小岩层沉降,有效地控制地表位移.Coal mining under buildings has become a major problem in many mining areas, seriously restricting the sustainable development of mining areas. Backfill mining is one of the main techniques in coal mining under buildings in China, and it can effectively solve the environmental problems caused by coal mining and control the maximum surface subsidence. According to the actual situation of Xiangtan Mining Company of the Second Mine, this paper uses RFPA numerical simulation software and analyzes the motion law of coal seem roof and surface in process of steep seam mining by using all collapse method mining, remaining pillar mining, and remaining pillar and backfill mining. The results show that backfill mining can change the motion law of overlying strata, significantly reduce the rock settlement and effectively control the surface displacement.

关 键 词：急倾斜煤层 充填开采 地表沉陷 

分 类 号：TD823.7[矿业工程—煤矿开采]