rock bolt support meaning in Chinese

锚杠支护

Rock bolting support technology for loose coal seam
松散煤层锚杆支护技术
Design optimization of rock bolting support for no . 10 seam of shanjiaoshu mine
煤层锚杆支护设计优化
Shotcrete - rock bolt support and concrete lining are important parts of timbering structures in modern tunnel construction , and there are also essentials for natm . the intensity difference of concrete is big because of the big randomicity at the aspects of material , metage of additive , mix round , ratio of water and lime , spray construct and water maintain
由于喷射混凝土和二次衬砌在拌和料、外加速凝剂的称量、拌匀以及水灰比的配比、在喷射作业及洒水养护上都存在着很大的随机性，其强度的差异也较大。