room-and-pillar working 中文意思是什麼
room-and-pillar working
解釋
房柱式開采法-
By measuring goaf gas concentration distribution in 3205 working face of taopinggou coal mine, we initially identified gas concentration distribution rules in coaf of room and pillar working face, therefore provided scientific basis to prevent and cure gas accidents of goaf in such working face
摘要通過對桃坪溝煤礦3205回採工作面采空區瓦斯濃度分佈的實際測定,初步查明了房柱式回採工作面采空區瓦斯濃度的分佈規律,為今後此類工作面采空區瓦斯防治、防止采空區瓦斯事故的發生提供了科學依據。
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