本文關(guān)鍵詞： 深部軟巖巷道 高應(yīng)力軟巖 變形機(jī)理 數(shù)值模擬 支護(hù)設(shè)計(jì)　出處：《安徽理工大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：本文以袁店一井煤礦為工程背景,采用實(shí)驗(yàn)室試驗(yàn)、力學(xué)理論分析、FLAC數(shù)值模擬計(jì)算分析及現(xiàn)場實(shí)測分析等綜合研究方法,對深部高應(yīng)力軟巖巷道圍巖變形破壞機(jī)理及其圍巖控制技術(shù)進(jìn)行了深入的研究。通過現(xiàn)場調(diào)研、觀測、取樣和煤巖力學(xué)參數(shù)的實(shí)驗(yàn)室測定,建立了袁店一井煤礦深部巷道的數(shù)值模型,采用FLAC3D軟件,分別模擬不同側(cè)壓系數(shù)作用下、不同支護(hù)條件(無支護(hù)、錨桿支護(hù)、錨架支護(hù)、錨網(wǎng)索噴注支護(hù))下掘進(jìn)對深部高應(yīng)力軟巖巷道圍巖穩(wěn)定性的影響,得出了深部高應(yīng)力軟巖巷道圍巖的變形破壞機(jī)理；論述了適合深部高應(yīng)力軟巖巷道圍巖變形控制的錨、網(wǎng)、索、噴耦合支護(hù)理論,并結(jié)合該理論和深部高應(yīng)力軟巖巷道圍巖變形破壞的特點(diǎn),對袁店一井煤礦103采區(qū)大巷進(jìn)行了針對性的支護(hù)設(shè)計(jì),在對不同的支護(hù)設(shè)計(jì)方案進(jìn)行了數(shù)值模擬仿真分析對比的基礎(chǔ)上,選擇確定最優(yōu)方案,最終將該研究成果應(yīng)用于103采區(qū)軌道大巷、運(yùn)輸大巷、回風(fēng)大巷進(jìn)行工程實(shí)踐。現(xiàn)場礦壓觀測表明支護(hù)方案合理,支護(hù)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(xué)位授予單位】：安徽理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TD353

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