本文選題：沿空巷道 + 圍巖穩(wěn)定性控制　； 參考：《山東科技大學(xué)》2017年碩士論文

【摘要】：本論文以彭莊煤礦1301泄水巷為工程背景,通過應(yīng)用現(xiàn)場調(diào)研分析、理論分析、計(jì)算機(jī)數(shù)值分析、現(xiàn)場應(yīng)用監(jiān)測等方法,研究了深井沿空巷道復(fù)合錨網(wǎng)支護(hù)技術(shù)。首先從沿空巷道圍巖變形破壞特征入手,對(duì)采空區(qū)和巷道上覆巖層結(jié)構(gòu)的力學(xué)模型作了分析,明確了上覆巖層破斷后形成的弧形三角塊結(jié)構(gòu)的穩(wěn)定性對(duì)巷道穩(wěn)定性的決定作用,還分析了巷道變形在采煤工作面在回采過程中的不同階段的特點(diǎn);其次,探討了沿空留小煤柱掘巷的可行性,根據(jù)合理煤柱寬度的確定原則,以及和其他礦區(qū)沿空巷道條件的比較,得出了留4.5m小煤柱掘巷可行的結(jié)論;第三,介紹了高強(qiáng)高預(yù)應(yīng)力讓壓錨桿支護(hù)技術(shù),詳細(xì)闡述了高強(qiáng)高預(yù)應(yīng)力讓壓錨桿支護(hù)作用機(jī)理,對(duì)錨桿讓壓構(gòu)件進(jìn)行了合理的設(shè)計(jì),提高了錨桿支護(hù)系統(tǒng)的支護(hù)效率;第四,根據(jù)1301泄水巷礦壓顯現(xiàn)規(guī)律,并借助計(jì)算機(jī)數(shù)值模擬軟件,理論計(jì)算確定了支護(hù)方案及支護(hù)參數(shù);第五,為了保證1301泄水巷頂板支護(hù)試驗(yàn)成功,對(duì)錨桿的性能進(jìn)行了井下測試,錨桿系統(tǒng)(桿體、托盤、螺紋、螺母、樹脂)的整體表現(xiàn)良好,滿足了巷道支護(hù)要求。文章的最后綜合分析了 1301泄水巷整體支護(hù)效果,通過對(duì)泄水巷的頂、底板和兩幫的位移的觀測,可以得出泄水巷圍巖變形在可接受的科學(xué)范圍之內(nèi),達(dá)到了支護(hù)預(yù)期目標(biāo)。論文中的支護(hù)方案及支護(hù)參數(shù)科學(xué)合理,很好地解決了彭莊煤礦泄水巷的安全支護(hù)問題,降低了煤礦生產(chǎn)成本,提高了煤礦生產(chǎn)效率,也為相鄰采區(qū)和類似礦井的支護(hù)提供一種方法和思路。
[Abstract]:Based on the engineering background of 1301 drainage roadway in Pengzhuang Coal Mine, the combined bolting and mesh supporting technology of deep goaf roadway is studied by using field investigation and analysis, theoretical analysis, computer numerical analysis, field application monitoring and so on. Starting with the deformation and failure characteristics of surrounding rock in goaf roadway, the mechanical model of overlying rock structure in goaf and roadway is analyzed, and the influence of the stability of arc triangle block structure on roadway stability is made clear. The characteristics of different stages of roadway deformation in the process of mining face are also analyzed. Secondly, the feasibility of driving roadway with small pillar along the gob is discussed, and the principle of determining the reasonable width of coal pillar is discussed. Compared with the conditions of roadway along the goaf in other mining areas, the feasible conclusion of driving roadway with 4.5m small coal pillar is obtained. Thirdly, the supporting technology of high strength and high prestress concession bolt is introduced, and the mechanism of high strength and high prestress concession bolt supporting is expounded in detail. The supporting efficiency of the bolting support system is improved by reasonable design of the pressure-bearing member of the bolt. Fourthly, according to the law of mine pressure appearance in 1301 drainage roadway, and with the help of computer numerical simulation software, the supporting scheme and supporting parameters are calculated and determined theoretically. Fifthly, in order to ensure the success of roof support test in 1301 drainage roadway, the performance of bolt system (bar body, tray, thread, nut and resin) is tested downhole, which meets the requirement of roadway support. At the end of this paper, the overall support effect of 1301 drainage roadway is analyzed synthetically. Through the observation of displacement of roof, bottom plate and two sides of drainage roadway, it can be concluded that the surrounding rock deformation of drainage roadway is within an acceptable scientific range, and the expected goal of supporting is achieved. The supporting scheme and supporting parameters in the paper are scientific and reasonable, which can solve the problem of safe support in Pengzhuang coal mine drainage roadway, reduce the production cost of coal mine, and improve the production efficiency of coal mine. It also provides a method and train of thought for supporting adjacent mining areas and similar mines.
【學(xué)位授予單位】：山東科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TD353

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本文編號(hào)：1962315