n.井筒

The paper analyzed the geological and hydrological features of Jvye coal field, discussed the relative merits of various mineshaft construction method at surface-soil section in use. 分析了巨野煤田地質(zhì)、水文特點(diǎn),討論了表土段井筒施工的各種現(xiàn)有方法的優(yōu)缺點(diǎn)。

The flooding of a mineshaft in central China's Henan province Friday was the latest in a string of environmental and industrial disasters that have highlighted the country's infrastructure problems. 中國(guó)的環(huán)保及工業(yè)災(zāi)難頻傳，中部河南省星期五的礦井透水事件只是再添一例而已，這突顯中國(guó)基礎(chǔ)建設(shè)出現(xiàn)重大的問題。

The horizontal arrangement of floor type frictional sheave mineshaft bunton 落地式摩擦輪井筒罐道梁臥放布置

Air-cooling Technology in the Construction of Mineshaft Threatened by Heat 受熱害威脅礦井井筒施工降溫技術(shù)

Keywords mineshaft;cnti-well driller;accumulative level;basic rock section; 礦井;反井鉆機(jī);沖積層;基巖段;