Jiaxing city sewage treatment the longest period in sea is located in Huang Hezhu riverbed, as long as 1259 meters, but also through the thick gravel sand layer and Huang Hezhu channel. This is a key project of west to east gas pipeline project in our country, under complicated geological conditions in the world of large diameter steel pipe one-time top into the longest of the pipe jacking project.

Shangyu city sewage treatment engineering in 2001, fibre glass sand inclusion tubes for the first time successfully applied in the pipe jacking project.

In 2008 in wuxi Yangtze river diversion project of China railway 10 bureau ten companies adopt domestic equipment 2200 mm diameter steel pipe twin tube into the top 2500 meters.

The above pipe jacking projects are marked the pipe jacking construction of my country level has reached a new level, with the world advanced level is becoming more and more close to. However, compared with the developed countries, however, such as Japan, Germany and other advanced mechanical equipment and construction technology level, our country still has a significant gap.