| Citation: |
QI Qingjie，SUN Zuo，LIU Wengang，et al. Study on risk assessment model of coal mine water accident induced by flood disaster[J]. Coal Science and Technology，2023，51（1）：395−402. DOI: 10.13199/j.cnki.cst.2022-0051
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As a disaster-bearing body, coal mines are vulnerable to the threats of flood disasters and are prone to serious impacts of floods. Floods will not only directly lead to flooding accidents and industrial square destruction, but also indirectly induce abnormal water gushing underground, water permeability, groundwater pollution and other chain disasters. In order to quantitatively assess the risk of coal mine flood accidents caused by flood disasters and strengthen the prevention and control of coal mine flood disasters. Based on the classic theory of three elements of disaster risk science: disaster-causing factors, disaster-pregnant environment, and disaster-bearing body, and the current situation of coal mine flood disaster prevention and control, the investigation index system of flood disaster prevention in coal mine is constructed, and the risk assessment model for flood disaster-induced coal mine water disaster accidents was established, and the application was verified in a coal mine in Tongzi County of Zunyi City. The research shows that the risk assessment of flood-induced coal mine water disasters is a comprehensive assessment of the system risk based on the assessment of the risk of disaster-causing factors, the stability or sensitivity of disaster-pregnant environment and the vulnerability of disaster-bearing body. The time distribution, spatial distribution and intensity of disaster-causing factors are considered in the hazard evaluation of disaster-causing factors. The stability evaluation of disaster-pregnant environment is to evaluate the sensitivity of disaster-pregnant environment to disaster-inducing factors by considering terrain, water system and other factors. The vulnerability of hazard-affected body is determined by two factors and one is the level of flood disaster prevention. The higher the level of prevention is, the lower the vulnerability of hazard-affected body is. The other is the number of people and assets exposed to the disaster-causing factors in the disaster-pregnant environment. And the greater the number is, the higher the vulnerability of the disaster-affected body is. Through the application of the proposed risk assessment model in this Coal Mine, it can be concluded that the risk level of flood-induced coal mine water disasters and accidents in this Coal Mine is low risk. In this paper, the establishment of risk assessment model provides a method for quantitatively evaluating the risk of coal mine water disaster caused by floods. It can provide a new reference for the prevention and control of flood disasters in coal mines.
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