boring shaft sinking

基本解释

The concept of depth limit for the method applied to sinking of shaft lining by means of floatation in shaft boring that was widely utilized in mine construction was put forward.
提出了國內廣泛採用的懸浮下沉井壁鑽井施工法有其深度極限的觀點。
The concept of depth limit for the method applied to sinking of shaft lining by means of floatation in shaft boring that is widely utilized in mine construction in China was put forward.
提出了國內廣泛採用的懸浮下沉井壁鑽井施工法有其深度極限的觀點。分析了泥漿中的井壁筒在加入配重水（非滿水）後井壁底接觸巖石時的受力狀態；
The concept of depth limit for the method applied to sinking of shaft lining by means of floatation in shaft boring that is widely utilized in mine construction in China was put forward.
提出了國內廣泛採用的懸浮下沉井壁鑽井施工法有其深度極限的觀點。