A Study Of Constructing The Visualized Simulation Platform For Safe Coal Mining And Core Algorithm

The safety production of coal mining is a very important issue that is related to the country's property and the lives of the people, as well as the creation of a harmonious society. Based on the analysis of the number, deaths and types of coal mine accidents of China in recent years, it is found that the ground pressure and its different behaviors, which is produced by the movement of surrounding rock to the mined space due to the operation in working face as well as the related preparing roadways, is the main factor of coal mine accidents including roof, gas, bumping pressure and inrush water as well as subsidence environmental hazards. Therefore, it is important to grasp the behavior of surrounding rock movement and fracture failures, as well as the behavior of stress field redistribution at the different mining operations, such as the different mining height, working face length and operating program, which includes the extent of the overlying strata movement the characteristics of stress distribution. They are the basic of controlling coal mine accidents and environmental hazards, and also the one of key elements of the current mining engineering science.With the modern information technology and safety coal mining technologies, a visualized simulation platform for safety coal mining has been constructed in this paper including the parameter calculations of working face, dynamic mining simulation and hazard warning. In the paper, the two kernel foundations, i.e. 3D structural model and dynamic information foundation are described, including from spatial structure parameter system, mechanical model and mathematical model to calculation model of working face, especially focusing on the behavior of coal mining safety accidents and its development due to coal mining, such as coal gas and dust outburst, roof water, floor water, roof support, roadway support, rock burst and so on. Also the corresponding dynamic information foundation is established.The results by this paper laid a theoretical foundation, making the prediction and control of major coal mine accidents and subsidence hazards from the main decision-making by statistics and experience to scientific and quantitative development stage, and achieving informatization of safety implementation management, visualization of production decision-making. This also promotes further development of the theory of practical ground pressure and its application in engineering.