新集二矿1煤底板太原组灰岩充水防突研究

Study on Prevention of Taiyuan Limestone Water-inrush in No.1 Coal Seam Floor of Xinji No.2 Coal Mine

为了实现对新集二矿1煤层底板隔水岩段防突性能的有效评价,并制订出底板突水防治方案,以二矿1煤层为研究对象,在详细分析矿井地质条件、水文地质条件的基础上,确定了隔水岩段总厚度、等效厚度和脆、塑性岩厚度比作为煤层底板防突性能3个主控指标;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;并进行数据归一化处理,建立归一专题图,最终叠加生成煤层底板防突性能评价分区图。

To effectively evaluate performance of water-resisting layer preventing floor water, and lay down plans of preventing floor water bursting,taking No. 1 coal seam floor of Xinji No. 2 Coal Mine as an object of study,based on the analyzing geological and hydrological conditions of the mining area,water-resisting layer thickness, equivalent thickness and lithology ratio were selected as three main indica- tors to prevent water bursting from coal floors. These indicators were quantized with the spacial data statistics and analysis functions of the GIS,the main indicators of preventing coal floors water burst was interpolated,sub-thematic layers of each indicator were construc- ted, too. Then, unification sub-thematic layers the data were created after normalizing, and the overlay layer about prevention of floor wa- ter burst performance was generated at last.