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.
关键词
城市地面塌陷/风险评价/影响因子/权重/灰色关联法/郑州市
Key words
urban ground collapse/risk evaluation/impact factors/weight/grey correlation method/Zhengzhou City
维普
万方数据