Application Of AHP In Geohazard Research And Appraisal

The purpose of detailed geohazard research and appraisal is to learn the developmentregularity of geohazard. We put these areas, which are similar in geological environment,types of disaster, rate of hazard and measures of prevention and treatment together, to makea comprehensive appraisal. This kind of divided evacuation of dangerousness is conduciveto continuous comprehensive research on reasons why geohazard happens, and also providea basis for making geohazard prevention and treatment planning on time.Our previous work was only to make an analysis of natural conditions, geologicalenvironment conditions, human being engineering and economy activities situation, andhistorical situations of geological process which leads to a disaster(size, density andfrequency of the geological process) in Huangyuan. Obviously, this kind of analysis wasjust a macroscopic evacuation, which was not make upon detailed prospection andevacuation of regional geohazard stability, but make upon analogy. This paper take a goodopportunity of detailed research data on geohazard in Huangyuan county Qinghai province,and adopt the method of AHP model to put forward the indicator system of geohazardfrequency and dangerousness, and then we come to the conclusion of comprehensive indexand division in this area. On the basis of qualitative, we made a quantitative analysis tochange degree of geohazard in Huangyuan county from a brand new angle, and we foundthat the main factor which affected regional geohazard most was the change of geologicalenvironment brought by human being engineering activities, thus revealed the developmenttrend of geohazard in Huangyuan county.