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兖州矿区注浆减沉研究有突破最近，兖州矿业（集团）公司成功地在东滩煤矿１４３０７综采放顶煤工作面进行了覆岩注浆减沉的试验。这是世界上首次在放顶煤开采条件下进行的此类试验，无论在理论上还是实践上均属创新与突破，已由专家通过技术评议。兖州矿区地处鲁西南平原...
Recently, Yanzhou Mining (Group) Co., Ltd. succeeded in experiment of overburden grouting and subsidence in 14307 fully mechanized top coal caving face in Dongtan Coal Mine. This is the first such trial in the world conducted under the conditions of caving for coal mining. It is an innovation and breakthrough both theoretically and practically and has been approved by experts for technical appraisal. Yanzhou Mining Area is located in the Southwest Plain ...