發(fā)布時間：2018-09-03 07:22

【摘要】：針對煤油氣共存礦井工作面掘進過程中底板油型氣涌出問題,采用現(xiàn)場跟蹤觀測、數(shù)值模擬和理論分析的方法,研究掘進工作面底板油型氣涌出機理。現(xiàn)場觀測結(jié)果表明,掘進工作面底板油型氣涌出主要受到油型氣儲集層分布、巷道開挖、底鼓裂隙等因素的影響。數(shù)值模擬結(jié)果表明,巷道開挖引起地層應(yīng)力、應(yīng)變發(fā)生變化,導(dǎo)致底板巖層變形破壞,產(chǎn)生裂隙。綜合研究分析認(rèn)為,掘進工作面底板油型氣涌出是油型氣儲集層分布、巷道開挖擾動、地應(yīng)力和油型氣壓力等因素綜合作用的結(jié)果,其中油型氣儲集層分布是物質(zhì)前提,巷道開挖擾動是誘導(dǎo)因素,地應(yīng)力創(chuàng)造了運移通道,油型氣壓力是動力因素。
[Abstract]:In order to solve the problem of oil-type gas emission from bottom plate in coal mining face, the mechanism of oil-type gas emission from bottom plate of coal mining face is studied by means of field tracking observation, numerical simulation and theoretical analysis. The field observation results show that the oil-type gas emission from the bottom plate of the working face is mainly affected by the distribution of oil-type gas reservoir, the excavation of roadway, the crack of bottom bulge, and so on. The numerical simulation results show that the ground stress and strain are changed due to the excavation of roadway, which leads to the deformation and failure of the floor strata and the formation of cracks. The comprehensive study and analysis show that the oil-type gas emission from the bottom plate of the tunneling face is the result of the comprehensive action of the oil-type gas reservoir distribution, the excavation disturbance of the roadway, the in-situ stress and the oil-type gas pressure, and the distribution of the oil-type gas reservoir is the material premise. The disturbance of tunnel excavation is the inductive factor, the in-situ stress creates the migration passage, and the oil-type gas pressure is the dynamic factor.
【作者單位】： 中煤科工集團西安研究院有限公司;
【基金】：國家科技重大專項(2016ZX05045-002-002)
【分類號】：TD712.5

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