Geological Environment Assessment Of Shanzhai Coal Mining

The technical conditions of deposit mining is an important research content for evaluating deposits, which is variousiy geological and technical factors including deciding or influencing the mining method and technical measures. The hydrogeology conditions of mining area is an important content of the technical conditions of deposit mining, which determines the construction scale of mines and development and utilization of deposits. The accurate and reliable evaluation of mineral exploitation provides important design basis for mineral exploitation, safe production and environmental protection.This paper takes the geological environment assessment of Shanzhai mine as the theme, through collecting data, field geological investigation, combined with geological drilling, pumping tests and indoor tests and so on, mainly analyses and evaluates the geo-environment characteristics of Shanzhai mine, which provides hydrogeology basis for mining and the evaluation method offers the reference to hydrogeology, engineering geology and geo-environment exploration and assessment of mines.In the hydrogeology evaluation, the study focuses on the analysis of aquifer and water-resisting layer and the filling water factors of coal mine. In engineering geology evaluation, the engineering geological characteristics of rock and the direct roof and floor of coal bed are studied in detail. At last, the paper mainly researches geo-environmental influence factors of mine in the geo-environment evaluation.The evaluating results shows that the capability of filling water is weak and the supply condition is poor in major aquifer of Shanzhai mine, so the complex type of hydrogeology is species 2, type 1 that the mine bed is filled with fracture water and hydro-geological conditions is simple. Due to complicated topography, various lithology, big hydrostatic pressure of groundwater in mine area, the phenomenon of top pressure and the heaving floor are common phenomenon in the process of coal mining and the roof and floor of deposit will appear complex engineering geological problems such as hard manage and so on, so the class of engineering geology exploration is specieâ…¢, typeâ…¢(intricately layered rock types). In exploration area, because of ecological environment being weak, sparse vegetation, landslides and collapse growing and comprehensive evaluation of groundwater quality is poor to very poor, the geo-environmental situation will be worse after mine exploitation, therefor, the geo-environment quality is specieâ…¢that the geo-environment of mining area is poor.During the process of mining, the hydrogeological problems are characterized by the drainage of main aquifers and the water-filling has less of a threat in mining area; the geological engineering problems show that the tunnel and digging work area can produce top pressure and floor heave in coal seam roof and floor; and the geological environment problems mainly are the surface deformation and the production of harmful substances which will cause environment pollution. Thus, to deal with the mine hydrogeology issues, the preventive measures (e.g. tunnel reinforcement, support of digging work face, provision protective pillar and post-harvest treatment and so on) can reduce the destruction of geological environment in mining activities.