【摘要】 针对深立井连接硐室群围岩稳定性控制和支护技术难题,在工程地质调查的基础上,结合室内岩石力学试验,基于广义的Hoek-Brown强度准则取得了岩体力学参数,进而采用数值模拟方法对硐室群在开挖过程中的围岩位移规律和塑性区范围进行了分析。根据数值模拟结果优化了硐室群的支护结构设计方案,并通过深浅孔方式的滞后注浆技术对围岩做进一步加固,围岩变形规律和支护结构受力的现场实测结果验证了优化支护结构的合理性,形成了深立井连接硐室群围岩失稳的控制对策。更多还原

【Abstract】 Aiming at rock stability and supporting technical problem of chamber group connected with deep shaft,based on the engineering geological survey,combined with indoor rock mechanics test,rock mechanical parameters were obtained by generalized Hoek-Brown strength criterion.Rock displacement law and plastic zone were analyzed in the process of chamber group excavation with the method of numerical simulation.The supporting structure design of chamber group was optimized on the basis of numerical simulation result,and delayed grouting technique was used for reinforcing rock.Rationality of supporting structure design was verified by the field measurement result of rock deformation row and supporting structure mechanical properties,and control countermeasure of rock instability of chamber group connected with deep shaft were formed.更多还原