Comprehensive evaluation index systemof the environmental geological problems of mines

In this index system the mine environmental geological problems are grouped into three major categories and 23 indices. The authors propose to use these indices as the criteria for the determination of the grades of harm extent for the environmental geological problems. Two calculation methods for the evaluation of two categories of indices and related weights of various indices are given. On that basis, the impact degrees of the history, present state and development trend of the mine environmental geological problems are evaluated using the fuzzy evaluation method. On the basis of considering the location conditions of the mine and the difficulty of rehabilitation and control of the mine environment, the grade of the comprehensive evaluation of the mine environmental geological problems is given and the grade also reflects the order of priority of the rehabilitation and control of the mine geological environment.