本文選題：風(fēng)氧化軟巖 + 變形機(jī)理　； 參考：《太原理工大學(xué)》2015年碩士論文

【摘要】：軟巖引起的煤礦井巷的破壞現(xiàn)象已經(jīng)非常普遍，嚴(yán)重影響著煤礦生產(chǎn)安全、效率和效益的提高，因此已經(jīng)引起國(guó)內(nèi)外學(xué)術(shù)界和相關(guān)部門的高度重視。在構(gòu)造應(yīng)力的作用下，受風(fēng)氧化影響的軟巖節(jié)理裂隙發(fā)育、破碎，在此類軟弱圍巖中布置的巷道變形強(qiáng)烈，往往由于采取的巷道支護(hù)措施不當(dāng)，使得大量破碎軟巖巷道的返修率居高不下，不僅浪費(fèi)大量人力物力財(cái)力，而且直接影響礦井高效生產(chǎn)，危及工作人員的人身安全。風(fēng)氧化軟巖巷道的支護(hù)技術(shù)已經(jīng)成為一個(gè)亟待解決的問(wèn)題。 以山西長(zhǎng)治羊頭嶺紅旗煤業(yè)有限公司9#煤層皮帶、軌道、回風(fēng)巷為研究對(duì)象，針對(duì)9#煤層巷道圍巖受風(fēng)氧化嚴(yán)重且受構(gòu)造應(yīng)力、下部15#煤層開采時(shí)的動(dòng)壓影響，支護(hù)困難的問(wèn)題，在總結(jié)前人的研宄成果和工程類比的基礎(chǔ)上，對(duì)風(fēng)氧化軟巖巷道的變形破壞特征、變形破壞影響因素和變形機(jī)理進(jìn)行了深入研宄，在9#煤層巷道頂?shù)装搴蛢蓭筒扇∶簬r樣，并通過(guò)實(shí)驗(yàn)室試驗(yàn)獲得了其物理力學(xué)參數(shù)；對(duì)9#煤層巷道皮帶巷頂板進(jìn)行鉆孔窺視，并由9#煤巷道所取的煤巖樣實(shí)驗(yàn)室物理力學(xué)參數(shù)通過(guò)巖體參數(shù)計(jì)算軟件RocLab得到了9#煤巷道圍巖巖體力學(xué)性質(zhì)參數(shù)。以皮帶巷、軌道巷和回風(fēng)巷所處的圍巖地質(zhì)條件與開采條件為基礎(chǔ)，過(guò)數(shù)值模擬，，對(duì)大巷圍巖的應(yīng)力分布、圍巖變形情況、圍巖破壞情況、巖層移動(dòng)情況和煤柱上的應(yīng)力分布進(jìn)行了分析，確定了巷道發(fā)生失穩(wěn)破壞的機(jī)理。根據(jù)圍巖完整性分析、巷道變形原因分析以及變形數(shù)值分析，結(jié)合工程類比的方法，提出了錨索+錨桿+網(wǎng)+U型鋼支架聯(lián)合支護(hù)方案及其支護(hù)參數(shù)。
[Abstract]:The destruction of coal mine roadway caused by soft rock has been very common, which seriously affects the safety, efficiency and benefit of coal mine production. Therefore, it has been paid great attention to by academic circles and related departments at home and abroad. Under the action of tectonic stress, the joints and fractures of soft rock affected by wind oxidation are developed and broken, and the roadway arranged in this kind of soft surrounding rock is deformed strongly, which is often due to the improper supporting measures taken in the roadway. The repair rate of a large number of broken soft rock roadways is high, which not only wastes a large amount of manpower, material and financial resources, but also directly affects the efficient production of the mine and endangers the personal safety of the staff. The supporting technology of wind-oxidized soft rock roadway has become an urgent problem to be solved. Taking 9# coal belt, track and return wind roadway of Changzhi Yangtouling Hongqi Coal Industry Co., Ltd., as the research object, aiming at the serious wind oxidation and structural stress in the surrounding rock of 9# coal roadway, the dynamic pressure of the lower 15# coal seam mining is studied. On the basis of summing up the previous research results and engineering analogy, the deformation failure characteristics, deformation failure factors and deformation mechanism of wind-oxidized soft rock roadway are deeply studied. Coal and rock samples were taken from the roof and floor of the roadway and the two sides in the 9# coal seam, and the physical and mechanical parameters were obtained through laboratory tests, and the roof of the belt roadway in the 9# coal seam was drilled and peeped. The mechanical properties of the surrounding rock mass of 9# coal roadway are obtained by using the physical and mechanical parameters of the coal and rock samples taken from 9# coal roadway through the calculation software of rock mass parameter RocLab. Based on the surrounding rock geological conditions and mining conditions of belt roadway, track roadway and return wind roadway, the stress distribution, surrounding rock deformation and surrounding rock failure of roadway surrounding rock are simulated by numerical simulation. The rock movement and stress distribution on coal pillar are analyzed, and the mechanism of roadway instability and failure is determined. According to the analysis of the integrality of surrounding rock, the cause analysis of roadway deformation and the numerical analysis of deformation, combined with the method of engineering analogy, this paper puts forward the combined support scheme of U-shaped steel support with anchor cable and anchor net and its supporting parameters.
【學(xué)位授予單位】：太原理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TD353

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