张集矿深井马头门围岩稳定性分析与支护研究

发布时间：2018-04-16 17:08

本文选题：深井马头门 + 围岩稳定性　；参考：《安徽理工大学》2015年硕士论文

【摘要】：随着我国煤炭开采深度的不断加大,矿井多呈现出工程地质条件复杂、地压大等特点。由于深井马头门位处矿井咽喉部位,设计断面大,连接硐室多,在施工过程中,围岩反复受到扰动,因此,深井马头门破坏的现象时有发生,严重影响着建井速度和矿井安全。针对这一技术难题,论文以淮南矿业集团张集煤矿深部井马头门为工程背景,进行了深井马头门围岩稳定性分析和支护技术研究工作。首先,根据岩石力学原理,对煤矿深井马头门围岩应力和变形特性进行了分析,得到其分布规律,同时分析了围岩与支护结构共同作用原理,为支护设计提供了理论基础。其次,在分析张集煤矿深部井马头门的工程地质条件基础上,进行了主要岩石的物理力学性能试验和围岩松动圈测试,得到了岩石主要力学指标和围岩松动圈大小。据此,根据支护原理,对马头门进行了支护设计,得到了初步支护方案。然后,通过数值模拟方法,建立了张集煤矿深部井马头门围岩稳定性分析模型,通过计算分析,提出了马头门优化支护方案,计算结果表明,优化方案更能确保深部井马头门围岩稳定和支护结构安全。最后,通过工程应用和现场监测结果表明,采用的优化支护方案可确保张集煤矿深部井马头门的围岩稳定和支护结构安全。
[Abstract]:With the increasing depth of coal mining in China, the engineering geological conditions are complex and the ground pressure is large.Because the deep well horse head gate is located in the throat of the mine, the design section is large, and there are many connecting chambers, during the construction process, the surrounding rock is repeatedly disturbed, therefore, the damage phenomenon of the deep well horse head door occurs from time to time, which seriously affects the construction speed and the mine safety.In view of this technical problem, this paper takes Zhangji coal mine deep well horse head door as the engineering background, carries on the deep well horse head door surrounding rock stability analysis and the support technology research work.Firstly, according to the principle of rock mechanics, the stress and deformation characteristics of the surrounding rock of deep coal mine Maotou gate are analyzed, and its distribution law is obtained. At the same time, the working principle of surrounding rock and supporting structure is analyzed, which provides a theoretical basis for supporting design.Secondly, based on the analysis of the engineering geological conditions of Matou Gate in deep well of Zhangji Coal Mine, the physical and mechanical properties of the main rocks and the loosening circle of the surrounding rock are tested, and the main mechanical indexes of the rock and the size of the loosening circle of the surrounding rock are obtained.According to the support principle, the support design of the horse head door is carried out, and the primary support scheme is obtained.Then, through numerical simulation method, the stability analysis model of surrounding rock in deep well of Zhangji coal mine is established. Through calculation and analysis, the optimum supporting scheme of horse head gate is put forward. The calculation results show that,The optimization scheme can ensure the stability of surrounding rock and the safety of supporting structure.Finally, through engineering application and field monitoring results, it is shown that the optimized support scheme can ensure the stability of surrounding rock and the safety of supporting structure of the Maotou gate in deep well of Zhangji coal mine.
【学位授予单位】：安徽理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD353

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