Research On Earthquake Disaster Risk Assessment In Gansu Province

Gansu Province is located in the northwestern region of my country,with abundant natural resources and high-quality social and economic development in the province.The urbanization of counties and districts has been accelerating,and the earthquake prevention and disaster reduction work in the province is facing new situations and new tasks.Therefore,to find out the reasons for the losses caused by the earthquake disaster in Gansu Province,understand the extent of the earthquake disaster in the province,and analyze the earthquake disaster risk degree of the counties and districts,can we effectively improve the regional disaster bearing capacity and the regional earthquake disaster resistance and mitigation capacity.The local reduction of earthquake disaster losses is of great significance for ensuring the stable economic development of the province and the people's better life.In this paper,Gansu Province is taken as the research object,and the seismic disaster risk and vulnerability of 86 counties and districts are studied and analyzed respectively.SPSS Statistics 25,Arc GIS10.2 and other related software are used to complete the rating.Based on the results of the rating.The improved risk matrix model of earthquake disaster is adopted to comprehensively analyze the risk levels of earthquake disaster in different counties and districts.Finally,the corresponding suggestions to reduce the risk of earthquake disaster are put forward from many aspects.The details are as follows:(1)From domestic and foreign research present situation as the starting point,the system combed the seismic vulnerability of disaster risk,risk,and relevant concepts evolution course of earthquake risk assessment,earthquake disaster risk analysis commonly used method,elaborated in this paper,the earthquake disaster vulnerability analysis methods,and lead to the risk from the Angle of philosophical ontology realism defines the related concept,And the difference between risk definition and risk description.The concept of risk definition held in this paper is expounded to provide theoretical support for the following data analysis.(2)According to the 2015 version of China's ground motion parameter zoning map,the earthquake peak acceleration of 86 counties and districts in Gansu Province was determined,and the risk of earthquake disaster in counties and districts was analyzed.The vulnerability assessment indicators were determined,authoritative data were collected through statistical yearbooks and official platforms,and an assessment index system was constructed.Vulnerability assessment of 86 counties and districts in Gansu Province was completed by using relevant software.By improving the risk matrix model of earthquake disaster,the zoning map of earthquake disaster risk assessment in Gansu Province was generated to directly reflect the risk situation of earthquake disaster in each county and district.(3)Based on the earthquake disaster risk situation of each county in Gansu province area,to analyze the causes of different results and influencing factors,from the earthquake disaster risk control system,earthquake disaster risk data management,improve the ability of earthquake prediction,improving the capacity of urban earthquake resistance ability,talent multiple aspects,such as targeted disaster symbiotic countermeasures,It can provide effective reference for improving earthquake resistance ability and allocating emergency resources in Gansu Province.