基于GIS的梁北煤矿底板突水危险性评价

我国有60％的煤矿不同程度地受到底板岩溶承压水的威胁，尤其是奥陶系和寒武系灰岩含水层水量大、水压高，已经发生多次重大突水事故。底板突水的控制因素很多，主要有矿山压力、含水层水压、隔水层阻水能力、原始导高、构造复杂程度等，本文以梁北煤矿突水为例，在分析矿井突水因素基础上，综合选取上述因素作为评价指标并定量化，利用ArcGIS平台，构建了底板突水危险性多因素评价模型。评价结果表明，该矿在现有疏水降压条件下，从2008年8月，矿井东部采区11111，11151，21031工作面由中等危险区转为安全区，疏水降压取得显著效果。研究表明，GIS可在矿井防治水工作中发挥重要作用。

Risk Assessment of Water Inrush from Seam Floor Based on GIS in Liangbei Coal Mine

In China, more than 60 percent of coal mines are suffering the threats of water inrush from Karst aquifers under the seam floor. The Ordovician and Cambrian systems, with high water pressure, have caused many serious water disasters. The floor water inrush controlling refers to many factors including mining pressure, water pressure, water-resisting ability of floor aquifuge, and geological structures. In this article, these factors above were quantified and were selected as assessment indexes for predicating the possibility of water outburst from the seam floor. Supported by ArcGIS, a multi-factors assessment model was established based on the analysis of hydrogeological background of Liangbei Coal Mine. After the model fitting, it was applied for forecasting the risk levels under the present conditions of water pumping. The resuits showed that the mining area in No.11111, No.11151 and No.21031 working faces will turned to be safe in August, 2008 from moderate dangerous areas. The research shows that GIS is important and useful for the water inrush controlling in coal mines.