复杂应力条件下构造裂隙型巷道破坏机制及稳定研究  

Study on failure mechanism and stability of structural fracture roadway under complex stress conditions

作　　者：姬军权 杨静 JI Jun-quan;YANG Jing(Shendong Development Preparation Center of National Energy Group,Shenmu 719315,China)

机构地区：[1]国家能源集团神东开拓准备中心,陕西神木719315

出　　处：《煤炭科技》2021年第4期57-61,共5页Coal Science & Technology Magazine

摘　　要：为解决工程区域地应力较大、主应力方向对构造裂隙型巷道维护不利、工程环境与地质构造相对复杂时综掘巷道施工中掘进效率低下等技术难题,以某矿综掘巷道为背景,分析了影响综掘巷道围岩稳定的主要关键因素,提出超前支护装置的具体设计途径;揭示超前支架与围岩相互作用规律。研究得出综掘构造裂隙型巷道围岩的破坏机理,并针对其变形特点提出了超前支护装置优化设计参数,通过在井下开展工业性试验,确保了掘进工作面施工安全,达到提高施工效率的目的。In order to solve the technical problems such as large in-situ stress in the engineering area,unfavorable maintenance of structural fracture type roadway in the direction of main stress,low driving efficiency in the construction of fully-mechanized driving roadway when the engineering environment and geological structure are relatively complex,taking the fully-mechanized driving roadway of a mine as the background,the main factors influencing the stability of surrounding rock in fully-mechanized tunnel were analyzed,and the specific design approach of advance supporting device was put forward,the interaction law between advance support and surrounding rock was also revealed.This paper studied the failure mechanism of the surrounding rock of the fractured roadway with fully-mechanized driving structure,and put forward the optimization design parameters of the advance supporting device according to its deformation characteristics.Through the industrial test in the underground,the construction safety of the heading face was ensured,and the purpose of improving the construction efficiency has been achieved.

关 键 词：巷道支护 掘进 优化支护 围岩稳定 

分 类 号：TU452[建筑科学—岩土工程]