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为了避免采空区积水引起的矿井透水事故,保证煤矿安全生产,针对胜利矿10~#煤层上部存在2~#和6~#煤层不明采空区积水的问题,提出了上部采空区积水对下部煤层开采威胁程度的判定方法,把其危险性划分为原岩渗透型、近似原岩渗透型、涌入型和突水型4种类型,分别给出了定义和界定准则。根据此准则,分别采用理论计算和数值模拟等方法,分别对2~#和6~#煤层采空区积水对10~#煤层开采的危险性进行了分析。分析结果为:2~#煤层采空区积水对10~#煤层的危险性为近似原岩渗透型,6~#煤层采空区积水对10~#煤层的危险性为突水型。
In order to avoid mine water flooding accidents caused by water accumulation in goaf and ensure safe production of coal mines, aiming at the problems of water deposits in 2 ~ # and 6 ~ # coal seams in No. The method of determining the degree of threat to the mining of lower coal seam by hydrology is divided into four types: original rock infiltration type, approximate original rock infiltration type, influx type and water inrush type. The definition and definition criteria are respectively given. According to this criterion, the risk of mining water from 10 ~ # coal seam in 2 ~ # and 6 ~ # coal seam mined area are analyzed respectively by theoretical calculation and numerical simulation. The result of the analysis is as follows: The danger of the water in the gob of 2 ~ # coal seam is similar to that of the original rock in the 10 ~ # coal seam, and the water hazard in the gob of 6 ~ # coal seam is the water inrush of 10 ~ # coal seam.