中文摘要：

针对煤矿深井马头门围岩稳定性控制的技术难题,进行了施工扰动效应和控制对策研究。建立了深井马头门施工过程的三维计算模型,通过分5个阶段的开挖和支护全过程模拟,得到了马头门施工过程的围岩应力和变形特性,揭示了马头门施工过程的扰动效应。通过对马头门施工优化方案模拟分析,结果表明与常规施工工艺相比围岩中第一主应力降低了26.3%左右,显著减小了后续施工对第一浇筑段与相连井壁处的扰动影响。并提出在前、后二次施工的关键部位钻一排密集深钻孔,使后续施工的扰动影响通过密集深钻孔而隔离和衰减,减小对已支护马头门和邻近井壁的扰动影响。

英文摘要：

Aiming at the technical problem of stability control on deep mine shaft ingate,the construction disturbance and its countermeasures were discussed. Three-dimensional computational model of deep shaft ingate construction process was established. Through a simulation on the entire excavation and support process of five stages,the stress and deformation characteristics of surrounding rock during the process of ingate construction were demonstrated clearly,which revealed the disturbance effect in the process. Compared with conventional construction techniques,a simulation analysis on the optimization scheme of ingate construction showed that the maximum stress of surrounding rock was reduced by about 26. 3%,which significantly reduced the effect of subsequent construction disturbance on the first pouring segment and shaft lining. A proposal was made to drill a row of dense deep holes between key roadway and chamber to isolate and attenuate the impact ofsubsequent construction disturbance. The influence of surrounding rock stability on the roadway and chamber will be reduced.