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Coal Geology ＆ Exploration. 2021, (03) Core

Classification method of coal and rock drillability based on Mechanical Specific Energy theoryChinese Full Text

XIE Zhijiang;CHANG Xue;YANG Lin;PI Yangjun;School of Mechanical Engineering, Chongqing University;State Key Laboratory of Mechanical Transmission, Chongqing University;Chongqing Research Institute Co.Ltd., China Coal Technology and Engineering Group Corp.;School of Automotive Engineering,Chongqing University;

Abstract: The drillability classification of the surrounding rock during the drilling process of coal mine gas drainage through the Mechanical Specific Energy（MSE） can provide a basis for the drilling rig to adjust the drilling parameters. Aiming at the problems of difficulty and low efficiency of manual layer identification in the process of gas drainage and drilling, a coal and rock drillability classification method based on MSE as the drillability evaluation index combined with Extreme Learning Machin... More
Keywords：

coal mine drilling rig; PDC drill bit; Mechanical Specific Energy（MSE）; Extreme Learning Machine（ELM）; drillability;

  • Series：

    (B) Chemistry/ Metallurgy/ Environment/ Mine Industry

  • Subject：

    Mining Engineering; Security Science and Disaster Prevention

  • Classification Code：

    TD712.6

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