汕头电缆隧道盾构工作井施工技术

On Construction Technology of Shield Shaft of Cable Tunnel in Shantou

介绍了汕头电缆隧道盾构工作井沉井的下沉施工技术,该沉井长细比较大,地质条件复杂,沉井下沉难度较大。通过下沉系数的计算,确定采用排水下沉和不排水下沉2种施工方法;采取的下沉施工措施,保证沉井顺利下沉,并保护了周边环境。

The sinking construction technology of shield shaft of cable tunnel in Shantou is introduced in this paper.Due to its larger length-diameter ratio and complicated geological conditions,the open caisson is facing more difficulties in sinking.Based on the sinking coefficient calculation,two construction methods are determined including drainage sinking and non-drainage sinking.These measures not only can ensure the smooth sinking of open caisson,but also protect the surrounding environment.