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〔本刊讯〕我国主要矿区回采工作面顶板分类评议会,由煤炭部科技局主持,于一九八○年十二月十八日至二十日在我院召开。参加会议的有部属有关司局、矿务局、研究所、院校等54个单位的代表共一百零四人。会议期间,全体代表听取了北京开采所、中国矿院、阜新矿院同志所作的“我国主要矿区回采工作面顶板分类的研究报告”,还参观了我院矿山压力等三个实验室。与会代表对顶板分类研空报告进行了认真的讨论。着重讨论了顶板分类的基本依据和分类指标,直接顶的分类,老顶的分级,架型选择和支架合理工作阻力的确定等问
[Our News] China’s major mining area mining face roof classification council, chaired by the Ministry of Science and Technology Coal Bureau, in December 18, 1980 to 20 days in our hospital. A total of 104 delegates from 54 units, including relevant bureaux, mining bureaus, institutes and institutions, attended the meeting. During the meeting, all the delegates listened to the “Research Report on Roof Classification of the Mining Faces of Major Mining Areas in China” made by the Beijing Mining Bureau, China Mines and Fuxin Minerals and visited three laboratories of mine pressure in our hospital. Participants on the roof classification research report carried out a serious discussion. It mainly discusses the basic basis and classification index of roof classification, the classification of direct roof, the classification of old roof, the choice of shelf type and the determination of the reasonable working resistance of support