Two directions!Another important project of the sub -center progress progress!Wear the East Six Rings

Beijing Tongzhou Release (BJTZFB)

Beijing Urban Deputy Middle Center Official WeChat

With the sound of "Boom, Boom, Boom ..."

"Jiantong" soil pressure balanced rectangular top pipe machine

6 blade breaks out of the soil

Tongzhou Xiaobu (Published by Beijing Tongzhou: BJTZFB)

Learn:

A few days ago, the key node of the Guangqu Road East Extension Project

Pass through the East Sixth Ring Underground Comprehensive Pipe Corridor Project

Successfully realize two -way penetration

Under the east extension of Guangqu Road, wearing the East Sixth Ring underground comprehensive pipe corridor project is a single -cabin form, and it is worn under large broken surface and long -distance rectangular top pipes.

The construction process has a small impact on the environment and does not need to change the ground space. It does not hinder traffic, low noise, and no dust. Another important node after the canal.

The underground comprehensive pipe gallery is located on the south side of the East Street of Canal.

During the construction process, the project team broke the soil about 10 meters from the ground. The use of the knife header operation can achieve the soil pressure balanced rectangular top pipe "Jiantong" controlled by the knife head to complete the 126 -meter top tube task.

Wang Ning, chief of the technical chief of the Guangqu Road project of China Construction Eighth Bureau, introduced: "During the construction period, it is necessary to ensure the normal opening of the East Sixth Ring Road Expressway, so the non -excavated rectangular top pipe is used to cross the best choice. The starting well and receiving well are set on both sides of the east and west sides of the Sixth Ring Road. The soil pressure balance process is selected, and the thrust between the main top oil cylinder and the pipeline festival is promoted to the prefabricated tube festival while installing the pre -system.

According to geological survey data, the top pipe construction crossing the stratum is a fine sand layer, and the water level line is located at the center of the blade. This soil layer is prone to blade plate knots during the top of the top.

In order to overcome the geological problem, the project organization expert demonstrated, conducting mud ratio tests on the scene, and found the "optimal solution" of improving the "semi -water thick sand" stratigraphy body.

"Only when you unearthed, you need to inject the soil improvement agent into the palm noodles first. After stirring through the knife tray, you can transfer the improved shaped soil to the soil bucket by two spiral unearthed device. Transport to the starting well, and then hang to the ground slag dumplings. "

Wang Ning introduced that each construction process needs to be strictly controlled. After testing and practical verification, it is repeatedly verified to accurately guide the construction to ensure that the top pipe machine is safely engaged in underground.

It is reported that the project will connect to the east of the canal to the East Street Comprehensive Pipe Corridor Project. In the future, the pipelines such as water, regeneration water, and communication are stored into the corridor.

Next, the project team will successively complete subsequent construction operations such as mud replacement, bracket installation, and pipeline setting.

After the comprehensive completion is completed, it is conducive to the maintenance, replacement, expansion, and unified management of various types of pipeline entering pipelines to ensure the stability and efficient operation of various types of pipeline entering pipelines. Essence

★

- END -