The Comprehensive Study On Geological Environment Of Handan Mining Area

Handan mining area is located in the south of the Taihang Mountain eastcoal-bearing area which is one of the five mine coal-bearing areas of HebeiProvince,coal resource is the basis for the development of a coal resource-based city,thedevelopment of the city is mainly dependent on coal mining and primary processing.Fora long time,due to the neglect of the mine geological environment protection research inthe exploitation and utilization of coal resources,the high-strength exploitation of coalresources make the already fragile mine geological environment worse, which hasbecame an important factor restricting the regional sustainable development.Therefore,it is of great significance to carry through the comprehensive evaluation on geologicalenvironment of Handan mining area.In this paper, on the basis of collecting basic information of Handan mining areaand the field survey data, the geological environment status of Handan mining area isevaluated and divided into a series of areas including serious area、relatively seriousarea and slightly serious area.Taking the principles of selecting evaluation indexes andthe influencing factors of mine geological environment carrying capacity intoconsideration, this paper selects8evaluation indexes including slope、overlay stratathickness、overlay strata aquosity、joint density, etc from4aspects of topography andgeomorphology、structural medium、hydrogeololgy and structural interface, and selects6evaluation indexes including goaf collapse coefficient、coal recovery ratio、waterinflow of coal, etc from3aspects of land pressure、coal pressure and water resourceenvironment pressure， using AHP method to determine the weight of each index, toestablish the mine geological environment carrying capacity and pressure evaluationindex system and evaluate the geological environment carrying capacity and pressure ofHandan mining area.Combine with the present situation of mine geological environment of Handanmining area and mine geological environment carrying capacity and pressure evaluationresults, this paper elaborates mine geological environment protection and restorationmeasures from the three aspects of geological disasters、water resource and landresources, which ensures the smooth implementation of mine geological environmentprevention and control. The results show that the method combining mine geological environment statusevaluation with mine geological environment carrying capacity and pressure evaluationis more advantageous for the exploration of the influence extent of mine exploitation onmine geological environment, which is of certain directive meaning for the harmoniousdevelopment of coal resources exploitation and mine geological environment preventionin Handan mining area.