本文關鍵詞： 深部軟巖巷道 高應力軟巖 變形機理 數值模擬 支護設計　出處：《安徽理工大學》2015年碩士論文　論文類型：學位論文

【摘要】：本文以袁店一井煤礦為工程背景,采用實驗室試驗、力學理論分析、FLAC數值模擬計算分析及現(xiàn)場實測分析等綜合研究方法,對深部高應力軟巖巷道圍巖變形破壞機理及其圍巖控制技術進行了深入的研究。通過現(xiàn)場調研、觀測、取樣和煤巖力學參數的實驗室測定,建立了袁店一井煤礦深部巷道的數值模型,采用FLAC3D軟件,分別模擬不同側壓系數作用下、不同支護條件(無支護、錨桿支護、錨架支護、錨網索噴注支護)下掘進對深部高應力軟巖巷道圍巖穩(wěn)定性的影響,得出了深部高應力軟巖巷道圍巖的變形破壞機理；論述了適合深部高應力軟巖巷道圍巖變形控制的錨、網、索、噴耦合支護理論,并結合該理論和深部高應力軟巖巷道圍巖變形破壞的特點,對袁店一井煤礦103采區(qū)大巷進行了針對性的支護設計,在對不同的支護設計方案進行了數值模擬仿真分析對比的基礎上,選擇確定最優(yōu)方案,最終將該研究成果應用于103采區(qū)軌道大巷、運輸大巷、回風大巷進行工程實踐。現(xiàn)場礦壓觀測表明支護方案合理,支護效果良好。
[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.
【學位授予單位】：安徽理工大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TD353

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