Establishment of spatiotemporal dynamic model for water inrush spreading processes in underground mining operations

Abstract

Underground mine water inrush accidents are currently one of the most frequent forms of disaster in the mining industry. In order to develop and implement and effective rescue and avoidance plan for water inrush accidents in underground mining projects, this paper proposes a spatiotemporal dynamic three-dimensional (3D) model for the real simulation of the flow spreading process. A spatiotemporal dynamic model framework was developed through an analysis of the factors influencing temporal changes of water inrush spreading in roadways. The basis of the model is the generation of a roadway space network system, the core of the model involves the paths resolving for the water inrush spread processes, and the key of the model consists of the velocity and time resolving for water inrush spread processes. A roadway space network system was generated from roadway data modeling, regularization, arc drift straightening and 3D networking. The result is the spatial illustration of model. A spatial dynamic demonstration model was created with the information gleaned from the resolution of the paths of water spread down as well as water level rising in the roadway space network. A temporal dynamic expression of the model was then created from an examination of the hydraulic characteristics of the water inrush current, and the calculation of the velocity and time of water inrush spread. The feasibility and validity of the spatiotemporal dynamic model for water inrush spread processes was tested and verified through a case study.