【作者】 王金喜；

【导师】 李金奎；

【作者基本信息】 河北工程大学 ， 地质工程， 2007， 硕士

【摘要】 我国煤系地层中具有软岩的矿井分布十分广泛,在高应力的作用下,这些矿区巷道的开掘和维护都十分困难。对高应力软岩巷道支护机理的研究,能够促进软岩巷道围岩控制技术的发展,适应我国新时期煤矿建设和安全生产的需要,对指导软岩巷道工程具有重要的理论意义和工程应用价值。本文在分析大量的工程实测资料和现场调查的基础上,应用FLAC3D程序进行了大量数值计算分析和相似材料模拟试验,重点以峰峰集团有限公司九龙煤矿巷道整修支护为工程实例,根据实际的围岩性质确定锚壳喷支护结构的设计参数。对高应力破碎软岩巷道变形破坏机理和锚壳喷支护的适应性进行了探讨。总结出了高应力破碎软岩巷道变形破坏特征,围岩变形的影响因素。本课题的研究针对软岩巷道存在的问题,结合实际应用,设计了锚壳喷新型支护结构,并提出了与围岩相互作用机理,认为围岩与锚壳喷支护体系作为统一体,锚体系统与深部围岩形成深部围岩控制系统,壳体系统与浅部围岩形成浅部围岩控制系统,通过锚杆将深、浅部围岩共同作用,喷体系统对围岩起到三维约束作用,同时加固壳体系统,通过锚体系统的柔性及壳体系统的可伸缩性适应软岩巷道大变形。更多还原

【Abstract】 With the soft rock strata in China coal mine widely distributed, in the role of high stress, these mine roadways are very difficult to develop and maintain. The mechanism research on roadway support for high-stress of soft rock promoted the development of soft rock tunnel control technology, adjusted the need of development of China’s coal mine construction and safety; and it had the theoretical and practical value guidance on soft rock engineering projects importantly.Based on the analysis of a large number of projects and site investigations data, made numerical analysis and similar material simulations with FLAC3D procedures, focused on Fengfeng Group Ltd Jiulong mine roadway repairing support as an example, and determined the design parameters of shotcreting shell structure accordingly to the actual nature of the rock bolting; discussed the deformation and destroy mechanism of the soft rock roadway under high stress conditions and the adaptability of a anchor shell supporting; summed up deformation and destroy characteristics of a high stress on broken soft rock and the factors of rock deformation.The research designed a new support structure of the anchor shell which aiming at the problem of soft rock roadway and combining the practical application, and proved interaction mechanism with the rock which thought that rock bolting and shotcreting support system as a shell entity, anchor system and the deep rock formatted deep rock control system, shell system and the shallow rock formatted shallow rock control system, through the bolt to acted the deep and shallow rock together, jet systems played 3D control role on rock, and also reinforced shell system , through the flexibility of anchor system and scalability of shell system to adapted to the large deformation of the soft rock roadway.更多还原