城市地面塌陷灾害风险评估研究

随着城市化进程不断加快，城市地下空间安全问题引起广泛关注。本文以影响地下空间安全的典型灾害-地面塌陷为例，开展可能性风险评估研究，为降低地面塌陷灾害损失提供理论支撑。城市地面塌陷成因复杂，为了保证评价过程和结果的客观全面，通过调研对塌陷引发因素进行了总结，从管道因素、病害体因素、环境因素三个方面建立风险发生可能性评价指标体系，并使用AHP-熵权法-灰色关联法组合评价，建立地面塌陷风险评价模型。将该模型应用于郑州市典型地下空洞工程案例进行评估分析，结果表明:地面塌陷风险评价结果与实测结果相符，证明了评估模型的科学性，同时为城市地面塌陷预防提供了决策参考。

Research on risk assessment of urban ground collapse disaster

Abstract: With the continuous acceleration of urbanization, the safety of urban underground spaces has attracted much attention. This work took ground collapse, a typical disaster that affects the safety of underground spaces, as an example to conduct risk assessment, aiming to provide theoretical support for reducing the losses caused by ground collapse disasters. The causes of urban ground collapse are complex. In order to ensure the objectivity and comprehensiveness of the evaluation process and results, a risk assessment index system was established from three aspects: pipeline factors, disease body factors, and environmental factors. The AHP- -entropy weight method- -grey correlation method was used to combine the evaluation and establish a ground collapse risk assessment model.The model was applied to a typical underground cavity engineering case in Zhengzhou for evaluation and analysis. The results show that the ground collapse risk assessment results were consistent with the measured results, proving the scientificity of the evaluation model and providing decision- making reference for urban ground collapse prevention.