Research On The Spread Process Of Water Inrush And The Best Route For Avoiding Disaster In Coal Mine

Due to the particularity of china's energy structure,coal energy will dominate the energy consumption in our country over a long period of time.Therefore,the production security of coal has a deep relation with the development of national economy and life safety of mine workers.In the process of coal mining,mine water inrush accidents caused by geological structure and non-standard mining,have become the second geological disasters of causing casualties and economic losses in the five mine disasters.Therefore,how to ensure to minimize casualties in the case of water inrush accident is a major problem in the research of this thesis.Through analysis and research from spread process and the shortest path algorithm in this article,it can be timely grasp the flood process and scope of water inrush in the roadway,to calculate the best route to avoid disaster.this article focuses on the work are following:(1)Due to water inrush of coal mine with complex subsurface geology and hydrogeology,the article analysis the characteristics and rules of water inrush according to related information of water inrush in coal mine,gets the distribution area of water inrushing point and the necessary condition of water inrush,and according to the different conditions and way of water inrush,analysis the volume and velocity rule.(2)Applies the graph and network theory to implement the search of water inrush spread path and divides the water flow into spread path and go-up path,so as to master swamped range of the water inrush.Using fluid dynamics to give the change of water level about two time points,calculate the volume in per unit time and the formula of water inrush level in the roadway.Combining the formula of water capacity of roadway gets the spread speed and time and the rise time of water inrush.(3)Once the mine water inrush accidents occurred,our priority is to ensure the safety of the mine personnel evacuation.In the basis of researching the weights of the mine roadway network,this thesis selects the Dijkstra algorithm to search the optimal path which can make sure staff to escape to the safety points.Because of the influence that water inrush to roadway,it needs to combine with the water inrush spread path to revise constantly the optimal path and get the best route ultimately which has higher security and the shortest time.(4)Using the Unity3 D engine to simulate the water inrush accidents and the three dimensional visual to express the water inrush spread route,to provide assistance for rescue of coal mine in the process of water inrush.