Geological Environment Safety And The Geological Environment Comprehensive Evaluation Method Research

Geological environment is an important part of the natural environment, is a kind of precious natural resources, is the material basis and prerequisite for the sustainable development of human society. Human activities based on the geological environment, bound by geological environment and influence at the same time changing the geological environment. With the constant improvement of the level of science and technology and social productivity, the intensity of human activities is more and more big, the various geological environment problems more prominent,"wenchuan earthquake","zhouqu debris-flow" of geological disasters" caused casualties and property losses shocked the world. Increasingly serious geological environment problem has become a influence human society, one of the most important factor for the sustainable development of economy. Therefore, we need to from the Angle of "safe" recognition and evaluation of geological environment.This article mainly done the following several aspects of research.(1) System analysis and research of geological environment and geological environment evaluation scientific meaning, defining "geological environment safe" preliminary, definite geological environment evaluation (suitability evaluation, safety evaluation, risk evaluation) connotation and their mutual relations;(2) Collect and analyze the basic geological environment and geological environment problem status data, summarizes the factors affecting the safety of geological environment and the main geological environment problems;(3) On the basis of above work, put forward geological environment build process of the evaluation index system, and the preliminary index system of geological environment suitability comprehensive evaluation;(4) Based on system research of geological environment comprehensive evaluation theory and method, the preliminary work process of safety comprehensive evaluation and zoning of geological environment is given;At the end, briefly introduces the GIS technology and based on the analysis of the evaluation process and the establishment of evaluation model. put " wenchuan county " for example, first study the basic geological environment and geological environment problems of wenchuan, determine the evaluation factors and the evaluation system; And then give functions and process diagram based on GIS evaluation calculation; Finally by using natural index method and fuzzy multilevel comprehensive evaluation, analytic hierarchy weighting method, the comprehensive evaluation of geological environment safety evaluation results of wenchuan county are given in figure.