Optimal Escape Route Design Based on Dijkstra Algorithm during Coal Mine Flood
After the coal mine flood accident,the most difficult problem is how to achieve safe escape in the shortest time.In this paper,through the actual measurement in the underground mine of Tai Dongshan Coal mine,the size of the impact on the difficulty of tunnel passage including the type of underground road-way,slope,wind speed,whether to set up local obstacles and so on,a new curve model of escape velocity in water is also proposed,and the influence of different height of water level on the passage time of roadway is obtained,and then calculating formula of equivalent length.The concept of safety factor is also put forward in this paper.Only when the safety factor value of roadway is greater than 0.5 can escape conditions be ob-tained.This paper introduces the method of obtaining the optimal path of Dijkstra algorithm with contour nu-merical consideration,the optimization of K-rule optimal path for multiple escape exits,and puts forward a new understanding and extension of K-rule optimal path.Finally,taking Taishan Coal mine and an average height of 1.7 m as an example,the optimal escape path is verified by experiments,which has great guiding significance for the actual coal mine escape during the flood period.
万方数据
维普
