煤油气共存矿井掘进工作面底板油型气涌出机理探讨
发布时间：2018-09-03 07:22
【摘要】：针对煤油气共存矿井工作面掘进过程中底板油型气涌出问题,采用现场跟踪观测、数值模拟和理论分析的方法,研究掘进工作面底板油型气涌出机理。现场观测结果表明,掘进工作面底板油型气涌出主要受到油型气储集层分布、巷道开挖、底鼓裂隙等因素的影响。数值模拟结果表明,巷道开挖引起地层应力、应变发生变化,导致底板岩层变形破坏,产生裂隙。综合研究分析认为,掘进工作面底板油型气涌出是油型气储集层分布、巷道开挖扰动、地应力和油型气压力等因素综合作用的结果,其中油型气储集层分布是物质前提,巷道开挖扰动是诱导因素,地应力创造了运移通道,油型气压力是动力因素。
[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.
【作者单位】： 中煤科工集团西安研究院有限公司;
【基金】：国家科技重大专项(2016ZX05045-002-002)
【分类号】：TD712.5
本文编号：2219312
[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.
【作者单位】： 中煤科工集团西安研究院有限公司;
【基金】：国家科技重大专项(2016ZX05045-002-002)
【分类号】：TD712.5
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