集贤井田煤层顶板危险性综合评价与防治对策研究

Comprehensive evaluation for water hazard risk in coal seam roof of Jixian Mining Field and the preventive countermeasures

以集贤井田主采煤层9#煤为例，在收集大量地质资料和水文地质资料的基础上，建立了煤层顶板的水文地质概念模型。运用“三图”理论。将煤层顶板导水裂缝带高度与其顶板含水层覆岩厚度进行比较，确定煤层和煤层顶板充水含水层的导通关系，进而根据导通关系建立冒裂安全性分区图：建立基于GIS与AHP的煤层顶板直接充水含水层的富水性指数模型，生成煤层顶板直接充水含水层富水性分区图：叠加冒裂安全性分区图和富抽}生分区图，建立了煤层顶板直接充水含水层涌（突）水危险性综合分区图。运用基于采掘进程的数值法对矿井涌水量进行预测预报，并提出相应的防治水措施。

The coal roof water inrush of 9＂ coal in Jixian Mining Field is studied in this paper. According to the geology and hydro-geological data, the hydrogeological conceptual model was established. According to the ＂three maps＂ theory and numerical simulation, the height of water-flowing fractured zone of coal seam was compared with the rock cover thickness of roof aquifer, to determine the conduction relationship of coal seam and the aquifer. The direct water-filling aquifer＇s water-richness index model of coal roof was built based on G1S and AHP, thus its direct water-filling aquifer＇s water-richness partition was gained. Then through overlaid the direct water-filling aquifer＇s water-richness partition and falling risk security partition of coal roof, the final comprehensive zoning map of water bursting conditions of the direct water-filling aquifer to coal roof was built. The numerical simulation method based on mining process was used to predict mine water inflow prediction and the corresponding measures for prevention and control of water was put forward.