马头门是矿井的咽喉部位,因其位置的特殊性,在马头门硐室开挖过程中,其受力状态十分复杂。尤其是对于千米深的立井,处于高应力下的围岩受多次施工扰动,应力集中严重,围岩应力往往会超过岩石强度,可能会引起马头门硐室围岩失稳,造成支护结构破坏,甚至危及马头门硐室处上下段井壁结构的安全。为此,开展了副井马头门围岩收敛变形监测工作,并基于围岩变形监测结果,对马头门支护结构进行了优化补强设计。 Ma Tau Mun is the throat of the mine site, because of its particularity in the location of the Matoumen chamber excavation process, the stress state is very complicated. Especially for the shaft with a depth of 1000 meters, the surrounding rock under high stress is disturbed by multiple construction and the stress concentration is serious. The surrounding rock stress often exceeds the rock strength, which may cause instability of the surrounding rock of Matoumen chamber, Protection of structural damage, and even endangerment of Matou Men Cave at the upper and lower shaft wall structure of the safety. Therefore, the monitoring and monitoring work on the deformation and deformation of the surrounding rock of the auxiliary well at Ma Taumen was carried out. Based on the monitoring results of the surrounding rock deformation, the optimization and reinforcement design of the support structure of the Ma Tau Mun was carried out.