Assessment And Control Measures Of Mining Geo-environment In Fugu

In recent years, with the predatory development of mineral resources, the process of national economy is accelerated rapidly, but some notable geo-environment issues are caused simultaneously, such as the serious waste in utilization of mineral resources, the constantly destroy in land resources, extrusive hidden trouble of geological hazard and the infrastructure destroy of houses, water and roads. These geo-environment problems threaten human's life and decrease people's available space gradually, the emergence of them is also contradicted to the country's policy about “building the resource-saving and environment-friendly society”, so, the effective evaluation system and control methods should to be explored and researched. Through detailed study of the instance, some valuable conclusions and understandings are obtained as follows:(1) The geo-environment problems existed in Nanliang coal mine are: occupy and destroy of land resources, damage of water resources and water environment, pollution of the mining "three wastes", geological disasters caused by mining such as land subsidence, ground fissure, collapse, etc.(2) On the basis of the establishing the mining geo-environment index system of the study area, using the analytic hierarchy process and correlation degree method to analysis and evaluate the mining geo-environment influence degree, contrasting the results of the analytic hierarchy process and grey relation degree method, the evaluation results are basically tallied with the situation of the mine, and proposing the advantages and disadvantages of the two methods, get the splitting criterions of the study area's geo-environment influence degree, the zoning standards of AHP is :K>2 is the serious area, 1.4<K<2 is the less serious area, K<1.4 is slight area; the zoning standards of grey relation degree is: 0.83???0.7 is serious area, 0.7>??0.55 is the less serious area, ?<0.55 is slight area.(3) Make the geo-environment influence degree of Nanliang coal mine into serious area, the less serious area and the slight area, at the same time proposed the countermeasures. The research area is 19.03 km2, the relatively serious area occupies about 2.83km2, the relatively less serious area occupies about 3.47km2, and the relatively slight area occupies about 13.03km2; put forward the principle of “mainly depend on management, which is supplemented by the prevent” to the serious and the less serious area, “mainly depend on prevent, which is supplemented by the management” to the slight area.