水致动压巷道失稳过程与安全评判方法研究  

Study on Water-Caused Instability Process of the Dynamic Pressure Roadway and Safety Assessment

作　　者：李桂臣[1] 张农[1] 许兴亮[1] 韩昌良[1] 王成[1] 

机构地区：[1]中国矿业大学煤炭资源与安全开采国家重点实验室,矿业工程学院,江苏徐州221008

出　　处：《采矿与安全工程学报》2010年第3期410-415,420,共7页Journal of Mining & Safety Engineering

基　　金：国家自然科学青年基金项目(50904064);国家重点基础研究发展计划(973)项目(2007CB209400);教育部新世纪优秀人才支持计划项目(NCET-06-0478);中国矿业大学青年科研基金项目(2008A004,2007A006);煤炭资源与安全开采国家重点实验室开放基金项目(08KF10,07KF04);煤炭资源与安全开采国家重点实验室自主研究课题项目(SKLCRSM09X03)

摘　　要：利用数值计算方法模拟了动压巷道遇水作用后围岩位移场和渗流场演化的阶段性规律和变形失稳过程,分析了巷道初期支护稳定但随动压反复作用与水逐渐渗入围岩呈现"泥化-变形-再泥化-失稳"的规律,指出软弱夹层遇水泥化是导致动压巷道失稳的主要诱因.利用层次分析法和计算机VB程序建立了针对该类巷道安全性的评判方法和判定程序,提出了水作用下动压巷道的强化控制技术.工程实例表明,必须加强对水的治理才能保持动压巷道稳定性.This paper simulates the rules of displacement field and seepage field deformation and instability process of surrounding rock in dynamic pressure roadway under water action, and analyzes the stage rule of the regularity "pelitization-deformation-pelitization again-instability" of surrounding rock, which is caused by the repeated actions of dynamic pressure and gradually infiltrated water after the initial stability of roadway supporting. On the basis of this, we point out that the encountering of weak intercalation and water is the key factor affecting the instability of dynamic pressure roadway. In addition, the safety assessment method about this kind of roadway is established by the analytic hierarchy process and computer VB program. Further more, the enhanced control techniques of dynamic pressure roadway under water is proposed. Engineering project shows that the measures of water controlling must be taken in order to effectively keep the stability of the dynamic pressure roadway.

关 键 词：动压巷道 失稳过程 软弱夹层 安全评判 强化控制 

分 类 号：TU353[建筑科学—结构工程]