北京市地质灾害韧性水平评估

Assessing level of resilience to geological hazards in Beijing

  • 摘要: 从经济条件、人口情况、社会保障与发展、基础设施和灾害管理5个方面构建了北京市地质灾害韧性评估指标体系;运用熵权-TOPSIS 法定量计算了各区县地质灾害内在韧性得分,并结合地质灾害易发性分数得到了地质灾害韧性水平评估结果.结果表明:1)北京市地质灾害韧性水平呈现出明显的城区高、郊区低的趋势,其中海淀、朝阳区地质灾害韧性水平最高;2)朝阳、密云、怀柔地质灾害易发性总体水平最高,城6区中除了朝阳区以外,其他城区的地质灾害易发性水平较低;3)朝阳区地质灾害韧性水平较高,但地质灾害易发性偏高,仍具有较高的地质灾害风险;怀柔、密云、门头沟和房山的地质灾害韧性水平较低,并且地质灾害易发性水平较高,在突发地质灾害时具有高风险,需加强地质灾害风险评估、做好泥石流防治工程建设以及地质灾害避难场地的建设.

     

    Abstract: The index system for assessing the resilience of geological hazards in Beijing was constructed from five aspects: economic conditions, population situation, social security and development, infrastructure and disaster management. The intrinsic resilience score of geological hazards in each district and county was calculated by applying the entropy weight-TOPSIS method, and the assessment results of geological hazards resilience level were obtained by combining the geological hazards susceptibility scores. The results show that: 1) the resilience level of geological hazards in Beijing shows a clear trend of high urban areas and low suburban areas, with Haidian and Chaoyang districts having the highest level of geological hazards resilience; 2) Chaoyang, Miyun and Huairou have the highest overall level of geological hazards susceptibility,while the other urban areas, except Chaoyang, have alower levels of geological hazards susceptibility among the six urban districts; 3) Chaoyang district has a high level of geological hazards resilience, but has a high level of geological hazards susceptibility, so it still has a high risk of geological hazards.The level of geological hazards resilience in Huairou, Miyun, Mentougou and Fangshan is low, and the level of geological hazards susceptibility is high, with a high risk in case of sudden geological disasters.They need to strengthen geological hazards risk assessment, improve the construction of debris flow control projects and build geological hazards refuge sites.

     

/

返回文章
返回