On November 29, the first domestic small curve long-distance hard rock jacking pipe independently developed by China Railway Construction Corporation and China Railway Construction Engineering Co., Ltd. was successfully checked and successfully put off by CNPC Engineering Co., Ltd. The equipment will be used in Shenzhen Binhe Avenue Sewage pipe project construction.
The equipment excavation diameter of 2.71 meters, the entire length of 40 meters, weighing about 115 tons, installed power of 550 kilowatts, can fully meet the municipal management of the construction of traffic, environment, site restrictions on higher requirements, with organizational flexibility, adaptability Features.
In design, the equipment adopts isopower main top cylinder, which effectively reduces the geometry of the initial well.It can adapt to the long distance (1km) tunneling to meet the small curve radius (R = 100m) The top-in demand has overcome the limitation of the domestic single pipe jacking machine within 200 meters of a single tunneling distance in the past, meanwhile, the equipment can meet the excavation of 100 MPa rock stratum in the high-strength hard rock formation and can be conveniently equipped with the access holes.
The water quality of Binhe Avenue Wastewater Trunk Project in Shenzhen City is that of hard rock and permeable layer, the maximum uniaxial compressive strength is 100 MPa, the maximum gravel diameter is 0.3 meters and the maximum water pressure is 10 Pa. In order to meet the needs of Futian District sewage treatment needs, plans to build a new sewage pipe on the north side of Binhe Avenue, east of Xinzhou Road, along the Binhe Avenue west, turn to Tai Ranjiu Road, and then along the Tai Ran Road laying to the Binhe Sewage Treatment Plant, the total length of about 3040 meters, the device plans to drive about 1,500 meters.
At present, China is in a period of rapid urbanization, but the construction of underground pipe galleries is relatively lagging.Development of underground pipe galleries in cities can not only effectively solve the problem of urban traffic congestion, but also greatly facilitate municipal facilities such as electricity, communications, gas, water supply and drainage Maintenance and overhaul of the city is an important measure to improve the quality of the city since 2015. The State Council has deployed pilot projects for the construction of integrated urban underground pipelines since 2015 and has set up 10 pilot cities across the country and plans to build underground integrated pipe galleries by 2018 Km, with a total investment of 35.1 billion yuan.According to rough statistics, the future investment in underground pipe complex or more than 1 trillion yuan.