侧向-超前支承压力叠加影响下巷道稳定性分析  

Analysis of Roadway Stability under Influence of Lateral and Advanced Support Pressure Superposition

作　　者：惠凡光[1] 潘兴松 孔祥玉[1] 周宝龙 杨森[2] HUI Fanguang;PAN Xingsong;KONG Xiangyu;ZHOU Baolong;YANG Sen(Dongtan Coal Mine,Yanzhou Coal Mining Company Limited,Jining 273500,China;School of Mines,China University of Mining and Technology,Xuzhou 221116,China)

机构地区：[1]兖州煤业股份有限公司东滩煤矿,山东济宁273500 [2]中国矿业大学矿业工程学院,江苏徐州221116

出　　处：《煤炭技术》2024年第8期33-36,共4页Coal Technology

基　　金：国家自然科学基金项目(52174089,52104106)。

摘　　要：为了明确采动过程中侧向-超前支承压力叠加影响下巷道应力环境,以东滩煤矿为工程背景,构建了工作面采动模型,分析了工作面超前区域支承压力与回采距离之间的响应关系。结果表明:不同的推进距离下叠加支承压力影响范围不同,最大可使166 m范围内的围岩支承压力发生变化。巷道围岩在距工作面6~18 m的位置极易出现应力集中,距工作面30~40 m的巷道两帮变形量最大,实体煤侧巷道围岩变形量整体大于沿空侧帮部的变形量。研究成果可为回采巷道超前支护范围优化方面提供科学依据。In order to clarify the stress environment of the roadway under the superimposed influence of lateral and advanced support pressure during the mining process,a mining model of the working face was constructed based on the engineering background of Dongtan coal mine,and the response relationship between the support pressure in the advanced area of the working face and the mining distance was analyzed.The results indicate that the influence range of superimposed bearing pressure varies under different propulsion distances,and the maximum possible change in the surrounding rock bearing pressure within a range of 166 meters can be observed.The surrounding rock of the roadway is prone to stress concentration at a distance of 6-18 meters from the working face.The deformation of the two sides of the roadway within a range of 30-40 meters from the working face is the largest,and the overall deformation of the surrounding rock of the solid coal side roadway is greater than that of the coal pillar along the goaf side protection roadway.The research results can provide scientific basis for optimizing the advanced support range of mining roadway.

关 键 词：采动巷道 叠加支承压力 巷道稳定性 数值模拟 

分 类 号：TD322[矿业工程—矿井建设]