上社煤矿9^#煤层底板突水危险性评价与应用

Risk Evaluation of Floor Water Invasion in No.9 Coal Seam,Shangshe Colliery

为防止9#煤层底板含水层发生突水,进行底板山西组碎屑岩裂隙含水层突水危险性的评价。通过分析基于GIS的AHP型脆性指数法理论,结合煤层底板特征确定影响突水的主控因素,绘制出各项影响因素的专题图,进一步通过建立评价模型、数据处理分析和评价结果分区,得出井田范围内9#煤层各区域底板突水危险性。结果表明:山西组碎屑岩裂隙含水层脆性和较脆弱区域主要分布在井田北部,过渡区域主要分布在井田东部和中部偏北,其余区域为较安全区和相对安全区。

To prevent floor water invasion in No.9 coal seam,the paper evaluates the rusk of floor water invasion from the clastic rock fractured aquifer in Shanxi Formation.By analysing AHP-type brittleness index method theory based on GIS,it determines the main controlling factors affecting water inrush,draws thematic maps of each influencing factor,and obtains floor water invasion in each area of No.9 coal seam through the establishment of an evaluation model,data processing analysis and evaluation result partitioning.Results show that the brittle and fragile aquifers of the clastic rock in the Shanxi Formation are mainly distributed in the northern part of the minefield,and the transitional area is mainly distributed in the eastern and central north of the minefield.The remaining areas are relatively safe areas.