基于数值模拟的矿井人为边界煤柱留设研究  

Study on Establishment of Artificial Mine Boundary Coal Pillar Based on Numerical Simulation

作　　者：尹会永[1,2] 魏久传[1,2] 王怀文[1,2] 郭建斌[1,2] 杨建华[3] 张广学[3] 吕文茂[3] 

机构地区：[1]山东省沉积成矿作用与沉积矿产重点实验室,山东青岛266590 [2]山东科技大学地质科学与工程学院,山东青岛266590 [3]兖州煤业股份有限公司济宁三号煤矿,山东济宁272069

出　　处：《矿业安全与环保》2013年第2期12-15,共4页Mining Safety & Environmental Protection

基　　金：国家自然科学基金项目(41072212);山东省沉积成矿作用与沉积矿产重点实验室开放课题(DMSM201012);中国煤炭工业协会2011年度科学技术指导性计划项目(MTKJ2011-369)

摘　　要：为了合理确定矿井人为边界煤柱宽度,利用FLAC数值模拟技术,根据单一煤层开采和上下煤层重复开采条件以及不同开采顺序的情况进行了模拟,结果表明,煤层开采的应力分布、塑性区分布特征不同,边界煤柱所需留设宽度也不同,宽度达到40～50 m以上。重复采动条件比单一煤层开采条件所需的边界煤柱宽度大10 m左右。数值模拟结果与《煤矿防治水规定》中煤柱宽度不小于40 m的规定相吻合,且更加明确,更具实际指导意义。In order to reasonably determine the width of mine artificial boundary coal pillar,simulation study was carried out on it by using FLAC numerical simulation technique according to the mining conditions of a single coal seam,the repeated mining conditions of both upper and lower seams and their different mining sequence,the numerical simulation results showed that since the stress distribution of coal mining and the distribution characteristics of the plastic zone were different,the width of the mine boundary coal pillar to be established was also different,which might be up to 40m to 50m or more.The width of the boundary coal pillar required for the repeated mining of coal seams was about 10m larger than that for the mining of a single one.The numerical simulation result is consistent with the pillar width not less than 40m which was specified in the ＂Rules for Prevention and Control of Mine Water Hazards＂,and it is even clearer and has more practical guiding significance.

关 键 词：边界煤柱 数值模拟 矿井人为边界 重复采动 

分 类 号：TD823.23[矿业工程—煤矿开采]