煤层采空区下回采巷道应力场分布模型构建  

Construction of Stress Field Distribution Model of Mining Roadway in Goaf of Coal Seam

作　　者：郭军 吕晓伟 李向磊 陈汉章 潘光雄 GUO Jun;LV Xiao-wei;LI Xiang-lei;CHEN Han-zhang;PAN Guang-xiong(Wanli No.1 Mine,Guoneng Baotou Energy Co.,Ltd.,Erdos 017000 China;GuonengWangxin Technology(Beijing)Co.,Ltd.,Beijing 100000 China;Beijing Longruan Technology Co.,Ltd.,Beijing 100190 China)

机构地区：[1]国能包头能源有限责任公司万利一矿,内蒙古鄂尔多斯017000 [2]国能网信科技(北京)有限公司,北京100000 [3]北京龙软科技股份有限公司,北京100190

出　　处：《自动化技术与应用》2024年第10期195-199,共5页Techniques of Automation and Applications

基　　金：国家能源集团科技项目(GJNY-20-238)。

摘　　要：针对原有应力场分布模型无法还原真实的回采巷道围岩特征的问题,构建煤层采空区下回采巷道应力场分布模型。在煤层采空区域内,引入弹塑性理论求取各方向应力,计算煤层回采巷道底板深度。以分类回采巷道围岩各区域为基础,确定弹性围岩区域与塑性围岩区域应力分布特征,解析巷道位移及其应变量。校正煤层采空区重力关系,以采空区地形变化和起伏特征为基础,构建采空区巷道应力场分布模型,完成方法设计。实验测试结果表明,所提模型可以真实反应围岩塑性区的分布特征,模拟半径值更加接近设定数据,具有较好的应用价值。Aiming at the problem that the original stress field distribution model can not restore the real surrounding rock characteristics of the mining roadway,the stress field distribution model of the mining roadway under the goaf of the coal seam is constructed.In the coal seam goaf area,the elastic-plastic theory is introduced to obtain the stress in all directions,and the depth of the coal seam min-ing roadway floor is calculated.Based on the classification of the surrounding rock areas of the mining roadway,the stress distribu-tion characteristics of the elastic surrounding rock area and the plastic surrounding rock area are determined,and the roadway dis-placement and its strain are analyzed.To correct the gravity relationship of the coal seam goaf,based on the topographic change and undulation characteristics of the goaf,the stress field distribution model of the gob roadway is constructed,and the method de-sign is completed.The experimental test results show that the proposed model can truly reflect the distribution characteristics of the surrounding rock plastic zone,and the simulated radius value is closer to the set data,which has good application value.

关 键 词：采空区 分布模型 应力场 回采巷道 

分 类 号：TP181[自动化与计算机技术—控制理论与控制工程]