There are of forms of gas discharge , but the form is soft coal seam gas discharge.

目前在瓦斯抽放中急待解决的问题是软煤层瓦斯抽放的打钻技术,尤其是深孔打钻技术.

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Exploration evaluation coal seam gas is a base of coal seam gas exploration and developing.

煤层气的勘探评价,是开展煤层气勘探与开发工作的基础.

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Research on coal bedding structure is the theory foundation and precondition of coal seam gas exploitation.

煤体层理结构的研究是煤层气开发开采的理论基础和前提条件.

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Li Mingchao Coal seam gas and its reconnoiter and exploitation. Beijing: Geology Publishing House, 1996.

李明潮,梁生正,赵克镜.煤层气及其勘探开发[M]. 北京: 地质出版社, 1996.

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