mine roof bolt

常見(jiàn)例句

The bolt truss were used to reinforce a layer concrete beam in order to simulate a mine roadway support in a mine layer roof.
對(duì)錨拉支架支護(hù)層狀頂板進(jìn)行了模擬試驗(yàn)和參數(shù)優(yōu)化研究；
At the present, the design method of roof bolt support in mine seam roadway can be divided into three methods at home and broad.
根據(jù)峰峰礦區(qū)十幾條煤巷錨桿支護(hù)實(shí)踐，提出了一種用于板裂結(jié)構(gòu)頂板的錨桿實(shí)用支護(hù)設(shè)計(jì)方法。
For supporting the broken roof of the stope of mechanized operation and its upper wall which comes into contact with fault plane, the tubular friction bolt is employed in Xincheng Gold Mine.
文中就新城金礦機(jī)械化作業(yè)采場(chǎng)的破碎頂板及與斷層面接觸的上盤，采用管縫式摩擦錨桿支護(hù)的有關(guān)技術(shù)問(wèn)題作一探討。