The Evaluation Research Of The Coal Mine Water Filling Aquifer Water Content In Shenhua Ning Xia Coal Group Company

Lots of water inrush accidents has a close contact with geological factors through the study of a large number of deep mining water damage accident analysis,such as Layers of rich water,combination characteristics of rock and so on. On the basis of spatial analysis functions in GIS and contribution ratio of index weight through multi-layer overlaying of thematic map technique,which put hydrogeology factor into spatial raster grid cell and prevention and control measures in the following prediction of discharge build the evaluation of the aquifer water and caving zone of a coal mine in ShenHua group through multi-index-weighted raster merging methods and map algebra. So, it is have a Practical strategic significance to mine water prevention and control work.This paper carried out work mainly summarized as the following:(1) Through analysis the general situation、geological background and hydrogeology in research region to ensure the recharge runoff drainage characteristics of deposit occurrence mine and aquifer water distribution which influenced by geological factors,such as combination of aquifer-resisting layer.(2) According to the actual hydrogeological experiment and existing relevant data to establishment the six corresponding main controlling factor thematic map which effect aquifer water yield property including aquifer thickness,units-inflow,permeability,brittle plastic rock thickness ratio,core extraction rate,wash water quantity.(3) We join AHP that be of a logic advantage with GIS that be of strong spatial analysing, and overlay different spatial thematic layer with different weight contribution ratio to a composite topological layer, and define a threshold value range by histogram of aquifer water yield property index statist. The comprehensive aquifer water filling assessment is composed of caving zone and rich water-based evaluation model which is combined with the region actual hydrogeological(4) On the basis of the large-well method and narrow roadway hydrogeology partition predicted the water inflow to put forward the prevention measures for the corresponding field which is according to the specific conditions of different water enrichment area.