竖井开挖采用了临时混凝士衬砌护壁措施。
The temporary concrete lining guard wall method was used in excavating vertical shaft.
水电工程竖井特别是高竖井开挖，主要难点体现在竖井导井开挖的速度上。
The excavation speed of pilot shaft is one of the key difficulties for the excavation of shaft, high ones in special, of hydropower works.
对于竖井开挖 ，尤其是大断面 深竖井开挖 ，出碴这一环节 ，往往是决定掘进速度快慢的关键因素。
The spoiling is a key factor influencing the advance speed for the shaft excavation, especially for the excavation of large cross section and deep shaft.
应用推荐