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由中国矿业大学与潞安矿业 (集团 )有限责任公司合作承担的常村煤矿“综放大断面沿空留巷技术研究”课题于 2 0 0 1年 1 1月 31日通过了由山东省科技厅组织的技术鉴定。“综放大断面沿空留巷技术研究”是国家经贸委的国家技术创新项目“综放大断面沿空留巷治理瓦斯技术”的核心
By the China University of Mining and Luan Mining (Group) Co., Ltd.Cooperation Changcun coal mine “fully mechanized caving large section gob-side entry retaining technology research project” on January 31, 2001 adopted by the Shandong Provincial Science and Technology Department Technical identification of the organization. “Research on technology of gob-side entry retaining with large cross sections in fully mechanized top coal caving” is the core of “national technical innovation project of State Economic and Trade Commission”