underground coal mining method

基本解釋

The paper presents uniform method of evaluation mining geological and technological conditions for application of rock bolting in Polish underground coal mines.
針對(duì)波蘭煤礦地下開采中的錨桿支護(hù)應(yīng)用實(shí)踐，提出了統(tǒng)一的采礦地質(zhì)和技術(shù)條件的評(píng)價(jià)方法。
This paper introduces the design method for a kind of the explosion-division intelligent electromagnetic starter specially used in the fans of the underground coal mining district.
介紹了一種煤礦井下對(duì)旋式風(fēng)機(jī)專用隔爆型電磁啟動(dòng)器的設(shè)計(jì)方法。
This paper analyzed the problems of the belt deviation for belt conveyor of the underground coal-mining, and summarized the corrective method for preventing the belt deviation of the belt conveyor.
針對(duì)煤礦井下膠帶輸送機(jī)膠帶跑偏問題進(jìn)行了分析，總結(jié)出了輸送機(jī)膠帶防止跑偏的防治方法，對(duì)膠帶輸送機(jī)在現(xiàn)場(chǎng)的使用和維護(hù)具有一定的實(shí)用價(jià)值。