Application of multi escape path model in mine flood

When a mine flood occurs, the effective escape route should be considered from the aspects of water flow characteristics, roadway structure information and the number of employees.In order to avoid escaping crowding, a multi-path escape model based on water inrush point hydraulic characteristic analysis model, water escape speed model and improved D-K path search algorithm is established and studied.After the water inrush occurred in the mine, the flood level of the water inrush point can be estimated through the rise of the water level, and the nodes and paths of the water inrush are screened.The movement speed of human body gradually decreases with the increase of water level.By comparing the rising speed and mobility speed of the roadway, we can determine whether the roadway can be used as an effective escape route.When escaping from the security node to the target node, within the time allowed to escape, using the improved D-K algorithm can enable the underground personnel to choose more escape routes and avoid congestion.In combination with the case analysis of Wangjialing mine, it has been shown that the model improves the escape rate of the employees to a certain extent.