Assessment And Prevention Of Geological Hazards In Qingdao Based On MapGIS

Qingdao, located at the east coast of China, is an essential economic center and a major seaport of the country. Increasing economic development and human activities on coastal areas have contributed to various geological disasters of Qingdao, which has threatened the public properties and safety. Therefore, risk assessment and prevention of geological hazards in Qingdao is crucial, in order to minimize the economical losses.Combining with the characteristics of geological situation of Qingdao region, investigate the distribution of geological disasters as well as the places in danger. The method to investigate distribution of geological disasters is based on analysis of geological hazards classification, development factors and future trends Factors for economical losses assessment have been defined in this research. Next, assessment for economical losses has been taken by analyzing influence factors and areas, disaster size and stakeholders in the pilot area. The risk assessment formula (Risk of geological disaster = Hazard×Vulnerability) has been developed in this study, based on an integrated analysis of existing risk assessment methods. Third, according to risk assessment factors, MapGIS has been used to calculate the risk of geological disasters and damage degree. Furthermore, MapGIS classified geological hazard susceptibility zones and assessed disaster-prone areas. Adding to these analyses, reasonable prevention measures and planning have been developed.Based on methods described above, the main outputs from this study are:Geological disaster-prone areas characteristic list of Qingdao, Distribution map for geological disaster-prone areas of Qingdao, Geological disaster prevention zones list of Qingdao and Geological hazards prevention layout of Qingdao. A risk of geological hazard indicates the potential damage of a disaster to the society. Moreover, the order of damage degrees offers an objective basis for decision makers.