首先在多孔介质的有效应力原理中引入瓦斯吸附的膨胀应力，推导出了适用于含瓦斯煤岩的有效应力计算公式。
An effective stress calculation formula for coal containing gas is proposed coupling with the swelling stress of gas adsorption in the effective stress principle for porous media.
着重介绍了公路隧道穿越含瓦斯地层时的几个关键性技术问题，为同类工程提供参考。
This paper introduces several key technological issues in the construction of highway tunnels under-crossing the gas stratum, which provides the reference for similar engineering.
含瓦斯煤蠕变方程的导出为建立广义的突出危险综合指标提供了基础。
The creep mathematical model provides a basis for establishing a comprehensive index of coal and methane outburst possibility.
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