本文選題：礦壓規(guī)律 + 動(dòng)壓巷道��； 參考：《河北工程大學(xué)》2015年碩士論文

【摘要】：巷道礦壓規(guī)律及圍巖控制技術(shù)一直都是礦井建設(shè)的首要工程,在現(xiàn)階段煤炭行業(yè)處于寒冬階段的大環(huán)境下,如何提高礦井生產(chǎn)的經(jīng)濟(jì)效益成了在競(jìng)爭(zhēng)中生存的重要問題,那么巷道支護(hù)成本的控制和留設(shè)煤柱寬度的合理性就顯得尤為的重要起來。本文為國家自然科學(xué)基金“深井巷道‘雙殼’注漿加固支護(hù)機(jī)理研究(51174070)”、河北省自然科學(xué)基金“冀南地區(qū)深部巷道雙殼注漿加固支護(hù)機(jī)理研究(E2011402046)、河北地區(qū)深井工程軟巖巷道連續(xù)‘雙殼’治埋底鼓機(jī)理研究(E2015402038)”中的一部分。益德煤業(yè)為新建整合礦井,本文以其150103備采工作面回風(fēng)巷掘進(jìn)為研究背景,通過理論分析、數(shù)值模擬等研究手段,對(duì)掘進(jìn)巷道緊鄰回采工作面時(shí),巷道圍巖應(yīng)力分布、位移變化的規(guī)律及巷道支護(hù)方式、煤柱留設(shè)寬度進(jìn)行了研究。首先,對(duì)150103工作面回風(fēng)巷道掘進(jìn)期間的三個(gè)階段(實(shí)體煤掘進(jìn)階段、沿空掘巷階段、受采動(dòng)影響階段)進(jìn)行了圍巖受力、圍巖結(jié)構(gòu)特征分析,并對(duì)150101工作面超前支承壓力的分布進(jìn)行研究,分析認(rèn)為巷道在受動(dòng)壓影響時(shí)圍巖結(jié)構(gòu)破壞首先發(fā)現(xiàn)在弱結(jié)構(gòu)面,并沿弱結(jié)構(gòu)面向煤體深部發(fā)展;其次,對(duì)150103動(dòng)壓巷道圍巖變形破壞機(jī)理進(jìn)行了分析,包括動(dòng)壓巷道的圍巖破壞特征的闡述、靜壓狀態(tài)與動(dòng)壓狀態(tài)下巷道圍巖結(jié)構(gòu)失穩(wěn)的機(jī)理分析、動(dòng)壓巷道支護(hù)技術(shù)研究三部分組成,分析認(rèn)為采用動(dòng)壓巷道圍巖破壞主要是由于非對(duì)稱變形造成巷道失穩(wěn)。最后,通過FLAC3D數(shù)值模擬技術(shù)對(duì)150103工作面回風(fēng)巷道掘進(jìn)期間的三個(gè)階段進(jìn)行圍巖應(yīng)力、位移規(guī)律演化,并對(duì)原巷道布置方案、優(yōu)化后煤柱及巷道支護(hù)方案進(jìn)行模擬分析研究,模擬結(jié)果顯示優(yōu)化后支護(hù)方案能夠使得巷道在動(dòng)壓影響下繼續(xù)使用,且從模型塑性區(qū)云圖發(fā)現(xiàn),煤柱留設(shè)位置剛好位于應(yīng)力降低區(qū)。
[Abstract]:The rule of roadway pressure and the control technology of surrounding rock are always the primary projects of mine construction. How to improve the economic benefit of mine production has become an important problem to survive in the competition under the environment of the coal industry in the cold winter stage at the present stage, and how to improve the economic benefit of mine production has become an important problem in the competition. So the control of roadway support cost and the rationality of retaining coal pillar width are particularly important. This paper is a study on the supporting mechanism of deep roadway 'double shell' grouting reinforcement (51174070) for the National Natural Science Foundation of China. Part of Hebei Province natural science foundation "deep tunnel double shell grouting reinforcement mechanism research (E2011402046), Hebei area deep well engineering soft rock roadway continuous' double shell 'control buried floor heave mechanism (E2015402038)" part. Yide coal industry is a new integrated mine. In this paper, the stress distribution of roadway surrounding rock is studied by means of theoretical analysis, numerical simulation and so on. The law of displacement change, the supporting mode of roadway and the width of coal pillar are studied. Firstly, three stages (solid coal driving stage, goaf driving stage, mining effect stage) during the excavation of 150103 face return air roadway are analyzed, and the surrounding rock structure characteristics are analyzed. The distribution of leading support pressure in 150101 working face is studied. It is considered that the failure of surrounding rock structure under the influence of dynamic pressure is first found on the weak structural plane and developed along the weak structure towards the deep part of the coal body. The deformation and failure mechanism of the surrounding rock in 150103 dynamic pressure roadway is analyzed, including the description of the failure characteristics of the surrounding rock in the dynamic pressure roadway, the mechanism analysis of the surrounding rock structure instability under the static pressure state and the dynamic pressure state, and the research on the supporting technology of the dynamic pressure roadway. It is considered that the failure of surrounding rock under dynamic pressure is mainly due to the instability of roadway caused by asymmetric deformation. Finally, through the FLAC3D numerical simulation technology, the surrounding rock stress and displacement law of the three stages during the driving period of the 150103 face return air roadway are analyzed and analyzed, and the original roadway layout scheme, the optimized coal pillar and the roadway support scheme are simulated and analyzed. The simulation results show that the optimized support scheme can make the roadway continue to be used under the influence of dynamic pressure, and from the cloud diagram of the plastic zone of the model, it is found that the position of the coal pillar is just in the stress reduction area.
【學(xué)位授予單位】：河北工程大學(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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