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兖州矿业 (集团 )公司兴隆庄煤矿和煤科总院北京开采所共同完成的“特厚煤层综机分层顶水开采条件下提高回采上限试验研究” ,系首例将钻孔声速法、超声成相法、数字测井等新方法用于测试“两带”的发育特征。该项目的研究采用了电镜显微技术评价防水煤岩体的质量 ,以大规模地
Yanzhou Mining (Group) Company Xinglongzhuang Coal Mine and Coal Mining Research Institute jointly completed the “extra-thick coal seam mechanized mining under the conditions of top-water production to raise the upper limit of mining research”, the first case of the sound velocity method, ultrasonic New methods such as facies dating, digital logging, etc., are used to test the developmental characteristics of the “two belts”. The project uses electron microscopy to evaluate the quality of water-proof coal and rock mass on a large scale