The risk assessment of land subsidence disaster in the northern region of Langfang city
LI Haijun
LIU Hongtao
DONG Jiubo
Abstract：Scientific and reasonable risk assessment of land subsidence disasters is of great significance for im-proving capabilities of regional disaster risk identification and prevention.This paper constructed disaster risk assessment index system with 12 indicators covering the conditions of geological structure,hydrogeology,dis-aster background,vulnerability of disaster bearing bodies,and construction of disaster prevention and reduction capacity,applied the weighted overlay analysis using stack various normalization factors in the north-ern area of Langfang,and carried out the analysis on land subsidence hazards,vulnerability,disaster preven-tion and mitigation capabilities,and disaster risk in sequence.The results show that the land subsidence disas-ter risk in study area presents the basic trend of high value in the northwest and low value in the central and eastern regions.The Xiadian-Yanjiao area with high hazard value and vulnerability value in the northwest was within the high and high-level risk area,while the Qiantun-Wubaihu area with high hazard value and low evaluation value of disaster prevention ability in the southwest appeared relative-high value.Furtherly,the dis-tribution pattern of medium and low risk areas in the middle region and eastern region is relatively consistent with the distribution pattern of danger and vulnerability.The research could provide reference for the develop-ment planning of regional urban-rural construction and enhance the comprehensive disaster prevention and re-duction capabilities.
Keywords：northern region of Langfangland subsidencedisaster riskindicator systemcomprehensive eval-uation
Publication Date：2024-04-28
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 106-111 )