shaft sinking

基本解釋

In a word, a reasonable freezing arrangement is the key point for safty, fast, economy in shaft sinking by freezing.
總之，合理的凍結(jié)孔布置是確保凍結(jié)法鑿井施工安全、快速、經(jīng)濟的關鍵所在。
This paper analyses the piston effect problem in dellling shaft sinking method and its detriments. In the meantime, the approaches of solving the problem are proposed by the author.
本文分析了鉆井法鑿井中所出現(xiàn)的鉆井活塞效應問題及帶來的危害．提出了解決鉆井活塞效應的方向和途徑。
In shaft construction, many sinking hoists were used to hang or bring to the stretch equipment like Hang dish, and template.
立井施工期間，采用多臺鑿井絞車同時懸吊或張緊一個設備，如：吊盤、模板等。

Hecla has also begun preparatory work for sinking of No. 4 Shaft, which is planned to access extensions to reserves, resources and additional exploration targets.
FORBES: Update:Hecla Plans To Reopen Lucky Friday Mine In 1Q; Loss Reported In 3Q