Study On Guangde Landslide Hazard Zonation

With the expending of city's scales and perfcets foundation installations of our country, Landslide which some of the project activity's lead to make great damnification to the life&wealth of people and development of society's economics. How to lighten and lessen damnification of disasters, how to forecast the landslide, and insure prevent the landslide disaster happen within the range of possibilities. The paper just based on all of above to study the Guangde landslide hazard zonation systemic and achieved some conlusions as follows:System of landslide harzard zonation include: select effect factors externally; quantify effect factors; hemi-quantification calculate the weight of the factors; set up math model; ascertain the grade of hazard zonation and the calculation analyse believing of hazard zonation.Applying fuzzy math theory to set up subjection function of effect factors aggregate, and make the quantification of factors standardization. Besides, the weight of the factor is a key point for the zonation, it directly affects the precision or not of the zonation conclusion, the paper adopt the hemi-quantification to calculate the weight of the factors, so enhanced the satiafaction of the zonation conclusion.Applying landslide hazard zonation theory to set up zonation of guangde landslide hazard grade, divide the studying area into three grades: highly hazard zonation, middling hazard zonation and lowly hazard zonation. Thereinto, in the north area of guangde middling hazard are mostly distributing, middling hazard are less mostly distributing and highly hazard are appearing at rarely scattered; in the middle area of guangde are almostly lowly hazard distributing; in the south area of the guangde middling hazard and highly hazard are distributing, and lowly hazard are appearing at rarely scattered.