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一种坚硬岩体强度弱化的掘进方法

  • Release time:2020-10-30
  • Hits:
  • Affilication of Author(s): 

    机电工程学院
  • Disigner of the Invention: 

    杜长龙,张农,LIU Songyong,孟德光,崔玉明,李洪盛
  • Type of Patent: 

    国内
  • State of Patent: 

    专利授权
  • Application Number: 

    201810438485.0
  • Number of Inventors: 

    7
  • Service Invention or Not: 

    no
  • Application Date: 

    2018-05-09
  • Authorization Date: 

    2019-07-02
  • First Author: 

    jianghongxiang