【作者】 吴丹；

【导师】 程桦；

【作者基本信息】 安徽理工大学 ， 结构工程， 2010， 硕士

【摘要】 目前,随着我国对煤炭需求量的日益增加,老区矿井和新建矿井都不可避免的需要进行深度延伸。由于井筒深度加大,自然地质因素恶劣复杂,加之目前缺乏正确的理论指导,深井硐室群设计与施工工艺存在很大的盲目性。本文通过对地下硐室群围岩稳定性分析得知,在一定的地质条件下,影响围岩稳定性最为显著的就是地下硐室的开挖方式。因此,从围岩稳定的角度来研究地下硐室群的开挖顺序,特别是研究深立井连接硐室群的施工有着重大意义。本文在充分调研黄淮矿区深立井连接硐室群破损现象和综合分析前人研究资料的基础上,结合淮南朱集煤矿副井实际工程概况,通过三维快速拉格朗日法模拟不同开挖方式,分析不同开挖方式对深井硐室群的影响,运用动态规划理论结合数值计算结果综合分析,得到了硐室群最佳施工方案,最优施工方案为立井—西马头门—等候室—东马头门—西配电室—南硐室—北硐室—列车操控室。最后对最优方案下硐室开挖顺序进行模拟,得到了围岩的位移、应力、塑性区的分布规律,计算结果表明围岩最大竖向位移发生在马头门拱顶位置,最大水平位移发生马头门拱顶两边,最大应力发生在拱角位置,塑性区范围在东马头门拱部8m和西马头门拱部7m范围内,与实测结果基本一致,对今后深立井连接硐室的设计与施工有一定的参考价值。更多还原

【Abstract】 At present, It’s inevitable for old mines and new mines to extend in depth as growing demand for coal in China. As the depth of the shaft increased, the natural geological factors was complexed and disgusted, and combined with the lack of a correct theoretical guidance in current, the design and construction process of deep chambers group is a big blindness. By analyzing the stability of surrounding rock of underground cavern we know that the most significant factor to affecting the stability of surrounding rock is the underground cavern excavation way under certain geological conditions. Therefore,it’s significant to study the order of excavation of the underground chambers, in particular, to study the construction of deep-shaft connecting chambers from the perspective of stability of surrounding rock.This paper based on the full investigation of damage phenomena in deep-shaft connecting chambers at Huanghuai, and the comprehensive analysed the previous studies. This paper combined with the auxiliary shaft of Zhuji coal mine in Huainan, simulated different excavation by three-dimensional fast lagrangian method, analysed its impaction on deep-shaft connecting chambers, analysed comprehensively by applying dynamic programming combined with numerical calculation, to seek the best construction programs.This has some reference value for the design and construction of deep-shaft connecting chambers. We have obtained the best construction scheme by dynamic programming theory combining with numerical results. The optimal construction plan for the mine is shaft-West Malaysia the first door-waiting room-Horsehead East-West Power Distribution Room-South Chamber-North Chamber-train control room. Finally, we obtained the distribution of displacement, stress and plastic zone, though them, we found that the maximum vertical displacement of surrounding rock was on the ingate vault, the maximum horizontal displacement occurred on the both sides, the maximum stress occurred in the arch angle position, and the plastic zone Ingate arch in East and West Malaysia 8m 7m head within the door arch. These consistent with the measured results, has some reference value for the design and construction of deep-shaft connecting chambers.更多还原