【作者】 王炯；

【导师】 何满潮；

【作者基本信息】 中国矿业大学（北京） ， 岩土工程， 2011， 博士

【摘要】 通过对唐口矿区深部岩巷工程地质条件和岩石力学特性及成分结构的研究,分析了典型深部岩巷的破坏特点,得出了其主要破坏原因。利用数值模拟的方法再现了破坏过程,提出了影响其变形破坏的主控因素。总结了典型传统锚杆的力学特性,深入探讨了传统锚杆应对缓慢大变形和快速大变形存在的结构和技术缺陷,提出了恒阻大变形锚杆研究的必要性。通过大量现场调查和科学实验,较为详细的研究了恒阻大变形锚杆和巷道围岩相互作用机理,建立了恒阻大变形锚杆力学模型；通过一系列室内外静力学拉伸试验和动力冲击实验,验证了新型恒阻大变形锚杆各项参数相对于以往该类型锚杆的优越性；提出了基于该新型锚杆的恒阻大变形围岩稳定性控制技术及对应的支护对策。将该研究成果应用到唐口煤矿深部岩巷支护实践中,采用恒阻大变形锚杆(索)+钢筋网+喷砼+底角锚管的耦合支护方式,在唐口煤矿西部轨道大巷进行了50m试验段施工,现场监测数据验证了支护方案的合理性和可靠性,同时验证了新型恒阻大变形锚杆支护材料对深部岩巷围岩大变形控制的有效性。更多还原

【Abstract】 Through the research on the engineering geological conditions of deep rock tunnel, the mechanical properties and rock compositions in Tangkou coal mine, the damage characteristics of deep rock tunnel are analyzed and the main destruction reasons are concluded. Also the failure processes are reappeared by numerical analysis and the main relative factors are proposed. Besides, the mechanical properties of typical traditional bolt are summarized and the defects of traditional bolts solving the large deformation problem of slow and fast are deeply discussed. By conducting numerous site investigations and laboratory tests, the interaction between constant resistance large deformation bolt and the roadway surrounding rock are investigated in detail. Through a series of statics tensile tests and dynamic impact tests, the various parameters of constant resistance large deformation bolt beyond traditional bolts are validated. The surrounding rock stability control technology and supporting measures of the constant resistance large deformation based on the new bolt are obtained. The research results are applied to deep rock roadway supporting practice in Tangkou coal mine. The coupling support technology of constant-resistance large deformation bolt(cable)+steel mesh+sprayed concrete+corner bolt pipe is proved to be reasonable in the 50m test section of western rail tunnel and the in-situ measurement data shows that the resonableness and reliability of supporting design. In addition, the new constant resistance large deformation bolt is effective to control the large deformation of deep rock tunnel.更多还原