青龙寺煤矿铁路保护煤柱宽度计算分析  

Calculation and analysis of the width of railway protection coal pillar in Qinglongsi Coal Mine

作　　者：杨云 张宇科 YANG Yun;ZHANG Yuke(Yulin Shenhua Energy Co.,Ltd.,Yulin 719000,China;School of Civil Engineering,Henan Polytechnic University,Jiaozuo 454000,China)

机构地区：[1]榆林神华能源有限责任公司,陕西榆林719000 [2]河南理工大学土木工程学院,河南焦作454000

出　　处：《陕西煤炭》2023年第2期59-63,共5页Shaanxi Coal

基　　金：国家自然科学基金(41807209)。

摘　　要：为了研究不同保护煤柱宽度对铁路变形的影响,以青龙寺5-20112工作面及其园区铁路为背景,采用FLAC^(3D)建立煤层工作面开采数值模拟模型。分析工作面开采过程中铁路在保护煤柱宽度分别为40 m、60 m、80 m和100 m的水平位移和竖向位移变化规律。结果表明,随着5-20112工作面与铁路之间保护煤柱宽度的减小,轨道最大竖向位移、水平位移、差异沉降、水平位移差值将逐渐增大且增大速率越来越快;当5-20112工作面与铁路之间的煤柱宽度在87 m以时,铁路变形才能满足列车的正常行车要求。In order to study the influence of different protective coal pillar widths on railway deformation,taking the Qinglongsi Coal Mine 5-20112 working face and its park railway as the background,a numerical simulation model of coal seam working face mining was established using FLAC^(3D).The horizontal displacement and vertical displacement of the railway in the width of protective coal pillars of 40 m,60 m,80 m and 100 m during working face mining are analyzed.The research results show that:with the reduction of the width of the protective coal pillar between the working face and the railway in 5-20112,the maximum vertical displacement,horizontal displacement,differential settlement,and horizontal displacement difference of the track will gradually increase and the increase rate will increase fast.When the width of the coal pillar between the 5-20112 working face and the railway is more than 87 m,the railway deformation can meet the normal running requirements of the train.

关 键 词：铁路 保护煤柱 数值模拟 位移 

分 类 号：TD822.3[矿业工程—煤矿开采]