Abstract With the rapid development of urban traffic, there are increasing needs for short and large-section traffic tunnels in the Yangtze River delta area with many rivers in China. To meet the slope requirements, the depth of overburden under river is usually small, and the pressure at tunnel face is difficult to be controlled when tunnel crosses under the river revetment where the overburden varies largely, which increases the risks and difficulties of construction and becomes a key issue concerning project safety. Based on the Chengjiangxilu tunnel in Jiangyin, construction risks were analyzed in respects of small overburden and the river revetment; in order to reduce construction risks of the large-diameter slurry shield tunnel crossing river, some construction techniques were proposed for rein?
forcement of river revetment and riverbed of Zhaqiao River; and appropriate construction parameters were selected and construction control measures were adopted in the process of shield construction.
Abstract：
With the rapid development of urban traffic, there are increasing needs for short and large-section traffic tunnels in the Yangtze River delta area with many rivers in China. To meet the slope requirements, the depth of overburden under river is usually small, and the pressure at tunnel face is difficult to be controlled when tunnel crosses under the river revetment where the overburden varies largely, which increases the risks and difficulties of construction and becomes a key issue concerning project safety. Based on the Chengjiangxilu tunnel in Jiangyin, construction risks were analyzed in respects of small overburden and the river revetment; in order to reduce construction risks of the large-diameter slurry shield tunnel crossing river, some construction techniques were proposed for rein?
forcement of river revetment and riverbed of Zhaqiao River; and appropriate construction parameters were selected and construction control measures were adopted in the process of shield construction.
.Discussion of Construction Techniques for the Slurry Shield-Driven River Crossing Tunnel with Large-Section[J] MODERN TUNNELLING TECHNOLOGY, 2017,V54(3): 169-173
2017, Vol. 54 