顶板走向长钻孔瓦斯抽采效果的数值模拟分析

Numerical Simulation Analysis of Gas Drainage Effect of Long Borehole in Roof Strike

为进一步降低工作面瓦斯含量影响其安全生产的问题,在对山西焦煤下属煤矿9号综采工作面地质条件、瓦斯涌出及运移规律分析的基础上,结合数值模拟软件对顶板走向长钻孔瓦斯抽采钻孔位置及抽采负压进行优化确定,为顶板走向长钻孔瓦斯抽采工艺的实际应该奠定理论基础。

In order to further reduce the gas content in the working face and its affect on safety production,based on the analysis of the geological conditions,gas emission and migration law of No.9 fully mechanized mining face in Shanxi Coking Coal subordinate coal mine,combined with the numerical simulation software,the drilling position and negative pressure of gas drainage in long drilling holes in the roof strike are optimized and determined,which lays a theoretical foundation for the practice of gas drainage technology of long borehole in roof strike.