煤与瓦斯突出力学模拟研究

Study on Mechanics Simulation of Coal and Gas Outburst

为了根据煤与瓦斯突出动力现象设计突出预警系统,减少灾害事故的发生,建立了煤与瓦斯突出力学模型。该模型考虑了地应力分布、煤体瓦斯压力分布与渗流、煤体不均匀性、吸附瓦斯的解吸等瓦斯突出主要影响因素。编制了三维有限元程序,并在此基础上进行了数值模拟计算。计算结果的物理图像正确合理,表明这个力学模型及三维计算程序可以对典型的工况进行计算模拟,为突出预警提供了参考依据。

In order to design forewarning systems of outburst which are based on the dynamic phenomenon of coal and gas outburst to reduce the occurrence of disasters, established the mechanical model of coal and gas outburst. Considers the stress distribution, pressure distribution and seepage of coal gas, coal inhomogeneity, desorption of absorbed gas and other main influencing factors of coal and gas outburst in the model. Developing a three-dimensional finite element program, and conducting the numerical simulation on this basis. The physical picture of calculation result is correct and reasonable,which shows that the mechanical model and three-dimensional calculation program can simulate the typical working conditions and provide reference for the outburst warning.