| The extensive coal mining model for a long time has caused serious damage to the geological environment of Shanxi mines,threatening the health and living surroundings of people in the mining district,and obstructing the sustainable economic development of the mining district.The mine geological environment is in urgent need of manipulation and control,and accurate and effective mine geological environment assessment is a necessary prerequisite and important means for its restoration and management.On the basis of field survey and data acquisition,On the basis of field investigation and related data collection,the assessment scope and assessment level are determined,the influence degree of the existing geological environmental problems in the Maodi mine is analyzed,the current geological environment of the mine is assessed,and the ground deformation of the assessment area is calculated through empirical formulas Scope and time,predict the possibility of occurrence of geological disasters,aquifer destruction and land resource destruction and their scope of influence,carry out prediction and assessment of mine geological environment,and comprehensively and systematically analyze the mine geological environment problems in the assessment area.According to the principle of selection of evaluation indicators,from the four aspects of geological environment background,land resources and environment,geological disasters,water resources and environment,select 12 participating indicators including topography and landform,annual average precipitation,vegetation coverage,geological structure,and groundwater influence range to construct an evaluation indicator system.The ahp and entropy method are combined,and the comprehensive weight method is used to determine the weight of index.The irregular grid method is used to divide the evaluation area into 13 evaluation units,so that each unit has similar geological environmental conditions.The effectiveness and confidence criteria were introduced to improve the fuzzy comprehensive evaluation model,and the geological environment quality evaluation of each evaluation unit of Maodi Mine was carried out.The Maodi Mine assessment area is divided into areas with good geological environment quality,general areas and poor areas,and the problems existing in the area are studied in detail.Based on the results of geological environment status,prediction and evaluation of geological environment quality,reasonable mine geological environment prevention and control measures are proposed from three aspects: disaster prevention,land use and topography reconstruction,groundwater protection and monitoring,which provide a basis for the restoration of the mine geological environment of the maodi mine. |
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