杨村煤矿16#煤层底板奥灰突水性研究
首发时间:2017-02-16
摘要:随着煤矿开采深度的不断增加,含水层的水头压力越来越大,矿井突水的可能性也在增大。为了保证杨村煤矿下组煤的安全开采,对杨村煤矿16#煤层进行突水危险性评价。本文在详细分析矿井地质条件、水文地质条件的基础上,确定了奥灰含水层水压、奥灰含水层富水性、隔水层厚度、有效隔水层厚度和地质构造等煤层底板突水的影响主控因素。并利用GIS的信息处理和分析功能,对各指标量化,生成单指标专题图。最后利用突水系数法进行分析评价,得到杨村煤矿16#煤层底板奥灰突水危险性综合评价图。
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The risk evaluation of Yang Village Coal Mine No.16 coal seam floor Ordovician limestone water inrush
Abstract:With the increase of mining depth, the hydraulic pressure of aquifer is on the increase,and the risk of water bursting in mine is also on the increase。In order to ensure the safety of Yang Village coal mining, the risk evaluation of Yang Village Coal Mine No.16 coal seam floor Ordovician limestone water inrush should be researched. Based on the analyzing geological and hydrological conditions of the mining area, the hydraulic pressure of Ordovician limestone, water-richness, water-resisting layer thickness, the effective thickness of water-resisting layer and geological structure are selected as main indicators to prevent water bursting from coal floors. These indicators are quantized with the special data statistics and analysis functions of the GIS, the main indicators of preventing coal floors water burst is interpolated, sub-thematic layer of each indicator are constructed. Then water bursting coefficient method is used to analyse and evaluate the risk of the water inrush. Finally the Yang Village Coal Mine No.16 coal seam floor Ordovician limestone water inrush synthetically assessment map is gained.
Keywords: coal seam floor water burst; Mining under safe waterpressure of aquifer;risk evaluation
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