Study On Geological Environment Frangibility Of The Coal Chemical Industry Economic Areas In Southwest, Shandong Province

The purpose of research is to investigate the main coal mine and the situation of coal chemical industry enterprise in this area, and to find out the present influence situation of local geological environment caused by the coal mine and the coal chemical industry. Geological environment frangibility is evaluated in the area, and the suitability assessment of geological environment is discussed in the coal chemical industry economic area. The author forecasts the influence of the geological environment by the coal chemical industry.Eventually practicable protection countermeasures of geologic environment are put forward, which provides the basis for construction of the coal chemical industry and the geological environment protection.Planning to construct important coal chemical industry base of the entire province and even the national in this area is significant strategic mission of development plan of Shandong Province during the"11th Five-year Plan". However, the local geological environment is influenced necessarily by the base of coal chemical industry, especially the groundwater environment will definitely be threatened greatly and will be brought unrecoverable destruction particularly in case of groundwater contamination.Therefore, in order to carve out vulnerable scope of the ground water, the author analyses the latent vulnerability of ground water in different space through the vulnerability appraisal of ground water. It has very strong directive function and scientific significance to divide the districts of geological environment suitability on base of the research of geological environment vulnerability.In the light of data collection, remote-sensing geology interpretation, the author chiefly finished environmental hydrogeological survey, geologic hazard survey, geophysical prospecting, exploration drilling, geologic environmental monitoring, surveying and GPS locating etc…The research report ascertained the conditions of geological environment, and systematacially expounded the developing status, forming causation and the damage of environmental geology problems, including surface collapse of coal field, over-exploitation cones of groundwater,karst collapse, land subsidence, water pollution and so on. The DRAMTIC method is used to carry on the vulnerable appraisal of the shallow layer ground water and the vulnerable research of geological environment in the coal chemical industry economic zone has been carried on by using the expert cluster allocation law.The problems of mine environment geology mainly have the Surface collapse of coal field, the pollution of water caused by waste water and so on. The environment geology question of the coal chemical industry is the water environmental pollution. The environment geology problems related to the development of groundwater mainly have the cone of depression, karst collapse, land subsidence.In this area, the main pollution of the surface water is the degree of light,moderate and severe, and the quality of the shallow layer ground water is primarily bad overall, The majority of water is Grade IV.The area of very high vulnerability has occupied 0.72% of the appraisal area, the area of high vulnerability has occupied 17.52% of the appraisal area, the area of medium vulnerability has occupied 38.21%of the appraisal area, the low vulnerable area accounts for 42.44%, the very low vulnerable area accounts for 1.11%. The vulnerable district appraisal of geological environment in the coal chemical industry economic zone has carried on by using the expert cluster allocation law. It divides into 4 areas, including the high vulnerability (Ⅰ), the relatively high vulnerability (Ⅱ), the general vulnerability (Ⅲ) and the low vulnerability (Ⅳ).TheⅠarea occupies 12.94% of the appraisal area, which distributes over large exposed and half exposed bedrock area. So, it is not suitable for construction in the coal chemical industry economic area on geological environment. TheⅡarea occupies 15.36% of the appraisal area, which belongs to high vulnerability area of the shallow layer ground water, it is not relatively suitable for construction in the coal chemical industry economic area on geological environment. TheⅢarea occupies 33.51% of the appraisal area, which belongs to medium vulnerability area of the shallow layer ground water, it is relatively suitable for construction in the coal chemical industry economic area on geological environment. TheⅣarea occupies 38.19% of the appraisal area, which belongs to low and very low vulnerability area of the shallow layer ground water, it is suitable for construction in the coal chemical industry economic area on geological environment.Eventually protection countermeasures of geologic environment are put forward, In view of main environment geology problems, which provide the basis for construction of the coal chemical industry and the geological environment protection.Main innovation points: 1. The ground water vulnerability of shallow layer and the vulnerability appraisal of geological environment have been carried on in view of the extraordinary nature of coal chemical industry. 2. Geological environment suitability appraisal of the district has been made according to the research of geological environment vulnerability. That has provided the important reference for the safe construction of coal chemical industry and the protection of geological environment.