Harbin metro line 3 shield machine starts

At 11:00 on July 23, no. 16129 shield tunneling machine started smoothly on the left line of tj-12 sign yi road station - haping road station area of the second phase of Harbin metro line 3 (hereinafter referred to as "zhenha interval").

Shield tunneling machine no. 16129 has successfully penetrated through two sections and three tunnels. Now it is starting to carry out the tunneling task in the starting section. The left line of zhen-ha interval station is 497.107 meters in length. The starting line is straight heading, which passes through two R=1000m circular curves, and finally is received by a straight line. The geological conditions of construction are mainly silty clay, which can be divided into three states: soft plastic, plastic and hard plastic. Cross the footbridge pile foundation at the entrance of the third hospital of medical university, the no. 4 building of linke jiayuan, and the anchor pile of health road tunnel, and enter the haping road station on both sides of the health road underpass bridge for receiving. Because there are many structures and pipelines buried shallow along the section, the construction is very difficult.

The installation work has a small construction site. Two devices are put into operation and assembled at the same time. In accordance with the requirements of the construction unit, zhongjiaotian completed the lifting and lowering of two equipment in one week. In the face of small operating space and limited time, technicians of Harbin project department organized party a's construction personnel to carry out technical training, cooperated with party a to complete the commissioning of shield unit, and successfully started. After the shield tunneling starts, the technicians of Harbin project department will continue to assist the construction party to complete the tunneling task of the left line of this section.