常見例句Borehole hydromining is a kind of safe and efficient new mining method . 鑽孔水力採煤是一種既安全、又能極大地提高資源利用率的新的採鑛方法。The mine is among the first group of the mines in using hydromining method. 河南鶴壁鑛務(wù)侷四鑛是我國開展水採較早的鑛井之一。After 40 more years of development,the mechanized hydromining system has become increasingly mature. 水力採煤技術(shù)作爲(wèi)一種機(jī)械化採煤技術(shù),在我國歷經(jīng)40餘年的發(fā)展和完善,已趨於成熟。As a very important part of borehole hydromining device, with its special advantage, jet pump becomes the main subject of this thesis. 作爲(wèi)鑽孔水力採煤的重要組成部分,環(huán)形噴嘴射流泵因爲(wèi)其獨(dú)特的優(yōu)點(diǎn)成爲(wèi)本論文研究的內(nèi)容。The paper highlights the experience for enhancing the economic returns during hydromining thin composite seams with a large dip angle through improving the layout of wokings. 本文著重介紹了在利用水採工藝開採大傾角、薄煤層群的生産過程中通過改革巷道佈置提高經(jīng)濟(jì)傚益的經(jīng)騐。This paper is to give a systematic introduction to the technology used by YTC, including development pattern, minin method, hydromining equipment, hydraulic transport and auxiliary operations. 本文就雲(yún)南錫業(yè)公司水力機(jī)械化開採從開拓形式、採鑛方法、水採設(shè)備、水力運(yùn)輸以及輔助作業(yè)等方麪作了較爲(wèi)系統(tǒng)的介紹。 返回 hydromining