The inner diameter of the tunnel is 2.2 meters and the length is 608.2 meters. The pipe jacking starts from the starting shaft, jacks in a downward direction with a slope of 14.5% for 41.7 meters, then jacks along a curve with a radius of 1800 meters for 258.3 meters. After that, it jacks in parallel at the bottom of the riverbed for 20 meters, then jacks along a curve with a radius of 1800 meters for another 258.3 meters, and finally jacks in an upward direction with a slope of 14.5% for 19.9 meters before being received in the receiving shaft.
Project Owner:Zhejiang Natural Gas Development Co., Ltd.
Construction Company: Sinopec Shengli Petroleum Engineering & Construction Corporation
Geology: Silt, pebble, gneiss
