Artificial engineering activities in cities have become a forceful geologic agent, which participates intensively in the natural geologic processes.
城市人类工程活动等已经成为强大的地质营力，强烈地参与到自然地质作用之中。
We take the 14# coal seam of Xiaonan coal mine of Tiefa basin as an example and analyse the geologic agent systematically which influences the gas content.
未开采煤层瓦斯含量及影响因素研究，是煤矿安全生产的重要基础研究工作，以铁法盆地晓南矿未开采的14#煤层为例，系统分析了影响瓦斯含量的地质因素。
The construction of expressways in the geological hazard area will activate the original geological disease because the deep cut slopes lead to the change of geologic agent.
在地质病害集中的山区修建高速公路时，由于山体切割改变了自然条件下的地质营力，激活了原有地质病害，从而带来了一系列的环境地质问题。
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