基于RFPA-Flow的马家沟矿突出数值模拟

Numerical simulation of Majiagou mine's outburst on the basis of RFPA-Flow

马家沟矿上山掘进突出严重威胁着该矿的安全生产,因此,掌握它的发展过程对突出机理研究及防突工作意义重大。以上山掘进突出后遗留的典型孔洞形状为基础,采用RFPA-Flow对此进行数值模拟。通过数值模拟反演出了马家沟矿上山掘进突出发生的地质条件及发展过程,归纳出了上山掘进突出机理,并通过数据处理,得出了在突出前后掘进头前方煤体内地应力、瓦斯压力分布状况及卸压区宽度变化规律。

Majiagou mine＇s safety is threatened by outburst seriously in the raise tunneling, therefore, it is important to predominate its developed process for outburst mechanism research and preventing outburst. In the text, It＇ s simulated by making use of RFPA - Flow on the basis of representative cavity＇s figure that were left behind after raise tunneling outburst. Geological conditions and developed process of Majiagou mine＇s raise tunnelling outburst were performed from the contrary direction, and raise tunneling outburst mechanism was concluded by numerical simulation, and the distributing status of geo - stress and gas pressure and the variety disciplinarian of distressed zone＇ s width were obtained in the coal that is in front of the tunneling place before and after of outburst.