大直径煤仓硐室施工扰动效应数值模拟分析  

Numerical Simulation Analysis of Construction Disturbance Effect of Large-section Coal Bunker Chamber

作　　者：姚韦靖 刘涛 陈宇 黄鑫 庞建勇[1] YAO Weijing;LIU Tao;CHEN Yu;HUANG Xin;PANG Jianyong(School of Civil Engineering and Architecture,Anhui University of Science and Technology,Huainan 232001,China;Postdoctoral Station of Civil Engineering,Anhui University of Science and Technology,Huainan 232001,China;State Key Laboratory for Geomechanics and Deep Underground Engineering,China University of Mining and Technology,Xuzhou 221116,China)

机构地区：[1]安徽理工大学土木建筑学院,安徽淮南232001 [2]安徽理工大学土木工程博士后流动站,安徽淮南232001 [3]中国矿业大学深部岩土力学与地下工程国家重点实验室,江苏徐州221116

出　　处：《安徽工业大学学报（自然科学版）》2022年第3期323-329,共7页Journal of Anhui University of Technology（Natural Science）

基　　金：中国博士后科学基金项目(2020M681974);安徽省高校自然科学基金项目(KJ2020A0297);淮南市指导性科技计划项目(2021022);安徽理工大学研究生创新基金项目(2019CX2028);国家级大学生创新训练项目(202210361031)。

摘　　要：依据朱仙庄煤矿增设两邻近大直径煤仓硐室的工程实际,采用FLAC3D软件建立两邻近大直径煤仓硐室三维计算模型,模拟分析2个煤仓硐室开挖和支护全施工过程围岩应力和位移分布,探讨2号煤仓开挖施工对完成施工1号煤仓围岩应力及变形的扰动效应。结果表明:1号煤仓施工完成后,煤仓上下部收口处出现应力集中,上部收口和仓身出现较大位移;2号煤仓开挖、联合支护的施工过程对1号煤仓产生先卸荷后约束的作用,1号煤仓典型位置的应力和变形经历先减小后增加的波动变化。For the engineering practice of adding two large-section coal bunker chambers in Zhuxianzhuang coal mine,three-dimensional computational model of two large-section coal bunker chamber was established by the software FLAC3D.The stress and displacement distribution of surrounding rock during the whole process of excavation and support of two coal bunker chambers were simulated and analyzed,and the disturbance influence of excavation construction of No.2 coal bunker chamber on the stress and deformation of surrounding rock of No.1 coal bunker after construction was discussed.The results show that stress concentration occurs at the upper and lower closures of No.1 coal bunker chamber,while the upper closures and the bunker appear larger displacement after the completion of No.1 coal bunker construction.The No.2 coal bunker underwent the construction process of excavation and combined support,has effect of unloading first and then constraint on the surrounding rock of No.1 coal bunker chamber.The stress and displacement at the typical locations of No.1 coal bunker chamber undergo fluctuation change of decreasing first and then increasing.

关 键 词：大直径煤仓 扰动效应 应力分布 位移分布 

分 类 号：TD354[矿业工程—矿井建设]