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.
針對波蘭煤鑛地下開採中的錨桿支護應(yīng)用實踐，提出了統(tǒng)一的採鑛地質(zhì)和技術(shù)條件的評價方法。
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.
介紹了一種煤鑛井下對鏇式風(fēng)機專用隔爆型電磁啓動器的設(shè)計方法。
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.
針對煤鑛井下膠帶輸送機膠帶跑偏問題進行了分析，縂結(jié)出了輸送機膠帶防止跑偏的防治方法，對膠帶輸送機在現(xiàn)場的使用和維護具有一定的實用價值。