深部高应力软岩巷道变形破坏机理及支护技术研究

发布时间：2018-01-31 12:56

本文关键词： 深部软岩巷道高应力软岩变形机理数值模拟支护设计　出处：《安徽理工大学》2015年硕士论文　论文类型：学位论文

【摘要】：本文以袁店一井煤矿为工程背景,采用实验室试验、力学理论分析、FLAC数值模拟计算分析及现场实测分析等综合研究方法,对深部高应力软岩巷道围岩变形破坏机理及其围岩控制技术进行了深入的研究。通过现场调研、观测、取样和煤岩力学参数的实验室测定,建立了袁店一井煤矿深部巷道的数值模型,采用FLAC3D软件,分别模拟不同侧压系数作用下、不同支护条件(无支护、锚杆支护、锚架支护、锚网索喷注支护)下掘进对深部高应力软岩巷道围岩稳定性的影响,得出了深部高应力软岩巷道围岩的变形破坏机理；论述了适合深部高应力软岩巷道围岩变形控制的锚、网、索、喷耦合支护理论,并结合该理论和深部高应力软岩巷道围岩变形破坏的特点,对袁店一井煤矿103采区大巷进行了针对性的支护设计,在对不同的支护设计方案进行了数值模拟仿真分析对比的基础上,选择确定最优方案,最终将该研究成果应用于103采区轨道大巷、运输大巷、回风大巷进行工程实践。现场矿压观测表明支护方案合理,支护效果良好。
[Abstract]:In this paper, taking Yuandian Yijing Coal Mine as the engineering background, comprehensive research methods such as laboratory test, mechanical theory analysis, FLAC numerical simulation calculation and field measurement analysis are adopted. The deformation and failure mechanism of deep soft rock roadway with high stress and the control technology of surrounding rock are studied deeply. Through field investigation, observation, sampling and laboratory measurement of mechanical parameters of coal and rock. The numerical model of deep roadway in Yuandianyi coal mine was established, and FLAC3D software was used to simulate different supporting conditions (no support, bolt support and bolting support) under different lateral pressure coefficients. The influence of excavation on the surrounding rock stability of deep soft rock roadway with high stress and high stress under bolting wire mesh and shotcrete support is obtained, and the deformation and failure mechanism of surrounding rock in deep soft rock roadway with high stress is obtained. This paper discusses the coupling support theory of anchor, mesh, cable and shotcrete for controlling the surrounding rock deformation of deep soft rock roadway with high stress, and combines the theory with the characteristics of deformation and failure of surrounding rock in deep soft rock roadway with high stress. On the basis of numerical simulation analysis and comparison of different support design schemes, this paper selects the best support design for No. 103 mining area roadway of Yuandian Yijing Coal Mine. Finally, the research results are applied to the engineering practice of track roadway, transportation roadway and return wind roadway in No. 103 mining area. The field observation of mine pressure shows that the supporting scheme is reasonable and the supporting effect is good.
【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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