隧道煤层预防瓦斯突出处理技术探讨

瓦斯突出受诸多不确定性因素影响与控制,其预报是一个复杂的不确定性系统问题。结合水塘隧道工程施工实例,探讨了隧道煤层预防瓦斯突出的处理技术,可为同类工程提供参考。

太钢三交矿井开采保护层方案和效果预测

开采保护层是预防煤与瓦斯突出最有效、最经济的区域性防突措施,也是实现"高瓦斯矿井在低瓦斯状态下"生产的主要瓦斯治理措施之一。根据实际情况提出,太钢三交矿井实施开采保护层(2#煤层)工程、解放主采煤层(4#、5#煤层)的方案。开采保护层将给矿井带来良好的社会效益和经济效益。

Outburst control technology for rapid excavation in severe outburst coal

The advantages and disadvantages of various outburst prevention measures inheading face were analyzed.The mechanism of outburst prevention about hydraulic extrusionmeasure was studied, the technological parameters were introduced, and the effectof outburst prevention was investigated.The in-situ experimental results show that thehydraulic extrusion measures are applied in serious outburst mine, not only the stress ofstimulate outburst is eliminated effectively but also the gas in coal seam is released efficiently,the measures get obvious effect on coal and gas outburst prevention, and theroadway driving speed is increased by 1.5 times, implementing a safe and rapid excavation.