New Breakthrough! Uniroc Launches Solution for Tunnel Second Lining Concrete Pouring without Cavitation And Anti-Collapse Prevention

At present, in the process of pouring concrete for the second lining of domestic tunnels, the concrete flow distance is long and the height difference is large, which can easily cause the phenomenon of concrete "cofferdam", arch cavity and local overpressure deformation of the formwork. In response to the prominent problems in the concrete pouring process, Uniroc has launched a solution for tunnel lining concrete pouring without voids and anti collapse.

Rotary arm shotcrete cloth machine

The trolley is equipped with a rotary arm BL300 material feeder, and the number of feeding layers from the arch line to the arch top on one side has increased from 1 layer to 2 layers, achieving full coverage and pressure pouring of the arch, shortening the concrete flow distance by about 50%. Solve the problems of concrete segregation, cold joints, and voids caused by the long concrete flow distance and large height difference at the position of the tunnel arch line.

360 periscope pouring device

The trolley is equipped with 360 periscope type pouring device, which has the functions of telescoping and rotating, remote control, and convenient operation. When pouring at the top of the arch, the 360 periscope pouring device is telescoped to the top surface of the formwork and rotated while pouring to control the direction and flow of pouring, which changes the problem of the traditional arch pouring method that can't control the direction and flow of pouring, and it can effectively eliminate the phenomenon of cofferdams, greatly reduce the probability of hollowing out of the arch, and improve the quality of the concrete pouring.

Uniroc's digital lining pouring trolley configured with 360 periscope type pouring system and rotary arm type placing machine solution, which solves the problem of long distance of concrete flow, large height difference and the existence of cofferdam phenomenon, improves the compactness of concrete pouring, and effectively solves the problem of concrete pouring cavity and top mold easy to collapse and deformation.

    At present, this solution has been applied in key projects such as West-10 High-speed Railway, Yanyu High-speed Railway, Kangyu High-speed Railway, etc., which has been fully recognized by the construction unit. Uniroc makes tunnel construction safer, more economical and more efficient!