邻近工作面开采对工业广场保护煤柱的影响研究  

Study on the influence of adjacent working face mining on the protective coal pillar of industrial square

作　　者：李鹏 Li Peng(Shaanxi Huadian Yuheng Coal and Electricity Co.,Ltd.,Yulin 719000,China)

机构地区：[1]陕西华电榆横煤电有限责任公司,陕西榆林719000

出　　处：《煤炭与化工》2025年第2期10-14,共5页Coal and Chemical Industry

摘　　要：针对采动影响下工业广场保护煤柱稳定性问题,以陕西华电榆横煤电有限责任公司小纪汗煤矿工业广场保护煤柱为背景,通过FLAC3D数值模拟软件模拟研究了邻近工作面开采对工业广场保护煤柱的影响。研究表明,邻近工业广场的工作面回采后,工作面中部对应地表下沉位移量最大,最大位移量接近采高;工作面两端的水平位移较大,尤其是靠采空区侧的水平位移最大。当下山保护煤柱宽度大于30 m,走向保护煤柱宽度大于60 m时,工业广场内建筑物移动变形在规定允许范围内。该矿工业广场下山保护煤柱实际留设宽度(33.8 m)大于30 m,走向保护煤柱99 m大于60 m,满足要求,但是考虑煤柱资源的采出率和安全系数,建议将走向保护煤柱宽度调整为80 m。Aiming at the stability of protective coal pillar in industrial square under the influence of mining,the protective coal pillar of industrial square in Xiaojihan Mine of Shaanxi Huadian Yuheng Coal and Electricity Co.,Ltd.was taken as the background,the influence of adjacent working face mining on the protective coal pillar of industrial square was studied by FLAC3D numerical simulation software.The research showed that after the mining of the working face adjacent to the industrial square,the corresponding surface subsidence displacement in the middle of the working face was the largest,and the maximum displacement was close to the mining height.The horizontal displacement at both ends of the working face was larger,especially the horizontal displacement on the side of the goaf was the largest.When the width of the protective coal pillar was greater than 30 m and the width of the strike protective coal pillar was greater than 60 m,the movement and deformation of the buildings in the industrial square were within the allowable range of the specification.The actual width of the protective coal pillar in the downhill of the industrial square of the mine(33.8 m)was greater than 30 m,and the 99 m of the strike protective coal pillar was greater than 60 m,which met the requirements.However,considering the recovery rate and safety factor of the coal pillar resources,it was recommended to adjust the width of the strike protective coal pillar to 80 m.

关 键 词：工业广场 保护煤柱 工作面开采 数值模拟 

分 类 号：TD823[矿业工程—煤矿开采]