【摘要】 对锚注支护机理进行了分析,得出巷道锚注支护可改善锚杆、裂隙面及围岩的力学性能,减小围岩塑性区及巷道位移,提高围岩的稳定性。并运用正交设计方法对锚注支护参数进行优化,确定了主要影响因素,提出了可供参考的支护方案。更多还原

【Abstract】 The bolt- grouting supporting mechanisms are discussed. Conclusions can be drawn as follows: bolt - grouting supporting improves me-chanic properties of blot, fracture and wallrocks, diminishes wallrock plastic zone and drift displacement, and increases wallrock stability. Using FLACProgram to compute the support schemes which are designed with orthogonal method, the parameter of bolt - prouting supporting are optimized and majoraffecting factors are defined. At last, the bolt - prouting supporting scheme is supported.更多还原