汝箕沟煤矿残余瓦斯含量区域效果检验临界值研究

Research the critical value of residual gas content about regional effect test in Rujigou Coal Mine

区域措施效果检验指标临界值的准确确定对于保障煤矿安全生产和降低防突工作成本具有重要的意义.以汝箕沟煤矿为例,在分析区域措施效果检验指标临界值确定原则及其敏感性指标的基础上,选择残余瓦斯含量作为区域措施效果检验敏感性指标;从瓦斯动力现象、坚固性系数、临界瓦斯压力、现场考察和瓦斯治理角度分别确定了残余瓦斯含量临界值的大小,最终确定汝箕沟煤矿区域措施效果检验指标——残余瓦斯含量临界值为9.0 m3/t;并进行了应用,实现了巷道的安全快速掘进,应用效果良好.

Accurate determination of the critical value about regional effect test has an important significance for coal mine safe production and reducing the cost of preventing outburst.As Rujigou Coal Mine an example,based on analysising the principle of critical value and sensitive index about regional effect test,chooses the residual gas content as sensitive index about regional effect test,determinates respectively the critical value of the residual gas content from the gas power phenomenon,the solid angle coefficient,critical gas pressure,site visits and gas control respectively,and determinated lastly the critical value of the residual gas content is 9.0 m3/t about regional effect test in Rujigou Coal Mine.And has carried on the expansion of the application,achieved safe and fast excavation roadways,and the application effect is good.