by the Fifth Company of China Railway 18th Bureau Group, has 20 bridges, 1092 pile foundations, 2 tunnels and more than 3 million cubic meters of roadbed excavation. Mud treatment in pile foundation construction and ballast treatment in tunnel excavation construction are very arduous tasks, which is undoubtedly a big test for the construction party. Since the commencement of construction, the project department of Suida Expressway B2 Bid has carefully planned, with the help of advanced equipment and rational utilization of resources, found the best "home" for mud and ballast, and provided "Suida Plan" for protecting the ecological environment along the line.
Settling, filtering and spitting out clear springs, protecting green mountains and green water
mud treatment has always been a thorny problem in bridge construction. A little improper management will cause illegal discharge of mud and seriously damage the surrounding ecological environment. In order to solve this problem, the core component of the mud treatment center introduced by B2 bid is CXSW three-mesh belt filter press. The system has large treatment capacity and high dehydration efficiency. It can treat 40-50 cubic meters of mud per hour and 1000 cubic meters of mud per 24 hours. The treated water is clear and transparent. After testing by the environmental protection department, the water quality meets the direct discharge standards and industrial water requirements.
In order to meet the construction needs, the demand for B2 standard sand has continued to grow, while the reserves of river sand resources have declined sharply. Solving the increasing contradiction between supply and demand of river sand has become an urgent problem to be solved by the project department.
The project department understands that in the process of tunnel excavation and stonework excavation, a large amount of stone ballast will be produced, which meets the requirements of machine-made sand production material source after testing. In this regard, the project department decided to introduce a high-quality sand-making building, adopt a dry-shaping sand-making system, and replace the scarce river sand with carefully treated stone ballast for construction, so as to find a new way out for stone ballast waste residue. By introducing new equipment to scientifically treat and reuse the "waste" on the construction site, the B2 bid
of Suida Expressway has found the best "home" for mud and ballast, and provided valuable experience for the construction of "Meilv Suida".