极软岩层巷道围岩控制机理及支护技术  

Research on mechanism of surrounding rock control and supporting technology in extremely soft rock roadway

作　　者：朱香辉[1] 王卫军[1,2] 王林[1] 黄俊[1] 张永清[1] 

机构地区：[1]湖南科技大学煤矿安全技术湖南省重点实验室,湖南湘潭411201 [2]湖南科技大学能源与安全工程学院,湖南湘潭411201

出　　处：《矿业工程研究》2010年第3期1-6,共6页Mineral Engineering Research

基　　金：湖南省科技厅重点项目资助(2009FJ2005);湖南省高校科技创新团队支持计划资助

摘　　要：为了探讨极软岩巷道围岩合理的控制方法,根据牛马司矿业公司水井头煤矿412下山地质构造条件和围岩特征,采用现场观测、X射线衍射图谱分析和钻孔窥视仪观测,分析了极软岩层巷道的岩石矿物成份、变形机理和破坏原因,提出了高阻让压、大刚度、高强度耦合支护技术,并运用FLAC2D进行数值模拟,结果表明采用大刚度、高强度耦合支护是可行的.根据现场监测数据和耦合支护原理,确定了合理的各支护环节耦合支护时间,工程实践表明,该技术能够软岩有效的控制极软岩巷道围岩的强烈变形,保证巷道的稳定,为解决类似条件的极软岩巷道支护问题提供了新的思路.In order to study the control methods for surrounding rock roadway in extremely soft rock, we use field observations, X-ray diffraction analysis and drilling peep instrument to analyze mineral composition, deformation mechanism and causes of damage in extremely soft rock roadway in Shuijingtou coalmine 412 downward roadway of Hunan Niumasi Coal Industry Company in China. This paper advances the coupling support technology as ＂high resistance pressure allowing, large stiffness and high strength＂, and uses FLAC2D numerical simulation to verify. The results show that the use of large stiffness and high strength coupling support is feasible. According to the field monitoring data and coupling support principle, it determines a reasonable coupling support time which is related to all links of the support. Finally, the paper indicates that the coupling support technology can effectively control the strong deformation of the surrounding rock and can ensure stability of the laneway. This successful field application can provide a new way Of idea for addressing similar conditions of the extremely soft rock roadway support.

关 键 词：极软岩层 数值模拟 耦合支护 

分 类 号：TD350.1[矿业工程—矿井建设]