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针对深部高应力立井连接硐室群围岩稳定控制和支护中出现的问题,通过硐室围岩调查取样并进行室内物理力学试验,基于Hoek-Brown强度准则选取了深立井硐室群围岩计算参数,利用GTS对硐室群开挖过程中围岩位移场和应力场分别进行了数值模拟分析,提出优化的支护设计方案。通过围岩表面收敛监测,确定了围岩滞后注浆的最佳时间,围岩变形和支护结构受力的实测验证了支护的可行性,满足了生产需要。
In view of the problems occurred in the stability control and support of the surrounding rock mass in the deep high stress vertical shaft connecting chamber group, the surrounding rock samples of the chamber were taken for investigation and the physical and mechanical tests in the chamber were carried out. Based on the Hoek-Brown strength criterion, the surrounding rock mass of the deep- By using GTS, the displacement and stress fields of the surrounding rock in the excavation of the cavern are numerically simulated and analyzed respectively, and the optimized design scheme of support is proposed. Through the monitoring and monitoring of the surrounding rock surface, the best time of the surrounding rock grouting, the deformation of the surrounding rock and the force of the supporting structure were confirmed. The feasibility of supporting was verified and the production needs were met.