The Present Situation And Study Obout Prediction Evaluationof Karst Collapse Of Zaozhuang City

Karst collapse is a kind of important geologic hazard. This article based on the project of National Natural Science Foundation of China,"Study on the cause mode of formation and forecast, prevention and cure of the Karst collapse(Batch NAUMBER:40772145)". The essay takes the downtown area of Zaozhuang as an example. In-depth and systemic researches have been made on the present situation of karst collapse and the conditions of environment and geology. With the system info and the integral thought of the regional geohazard assessing and early warning analysis, the practical situation of research areas and the assessing targets full of meanings of practical study, the early warning and assessing has been tried in the small areas, where karst collapse occurs frequently. And the fourth-degree assessing system of karst collapse disaster—distribution parameter,potentiality parameter,dangerous parameter and harmful-ness parameter has been built in the research areas.We should be propose a practical evaluation method by studying summary evaluation of Karst collapse in the past.With the help of the existing survey on geohazard and the information layers of GIS geohazard, the distribution characteristic of regional geohazard has been wholly analysed and the relation between the distribution of geohazard and geological environment and precipitating factors has been separately researched. The disaster assessing system has been selected and extracted.The factors have been graded and assigned. The four degrees has been calculated by means of aggregative index model and has been fourth-divided. The disaster—distribution parameter, potentiality parameter and dangerous parameter has been fourth-divided. The harmful-ness parameter has been fifth-divided.Then early warning assessment and analysis can be done.