Research on Risk Assessment of Urban Ground Collapse Disaster
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.
urban ground collapserisk evaluationimpact factorsweightgrey correlation methodZhengzhou City
万方数据
维普
