A piping extension system for tunneling

Abstract

The invention discloses a piping extension system for tunneling. The piping extension system comprises a soil layer; the soil layer is provided with a launching shaft; one side of the lower end of the launching shaft is connected with a tunnel; the tunnel is internally provided with a tunneling machine; and one side of the tunneling machine is connected with a second telescopic mechanism. A slag outlet pump is connected to the tunneling machine; the slag outlet pump is connected with sludge feeding piping and sludge discharging piping; the lower ends of the sludge feeding piping and the sludge discharging piping are provided with a movable auxiliary tool; a sludge discharging pit is formed in one end inside the tunnel; a first telescopic mechanism is arranged on one side of the sludge discharging pit; and the sludge discharging pit is internally connected with a second fixed type sludge feeding pipe and a first fixed type sludge feeding pipe. In the piping extension system, with the tunneling process, the connector extension position of new piping does not need to be moved, piping materials do not need to be stored near the tunneling machine, and when piping connection is conducted, sweeping operation of sludge can be easily conducted.

Description

technical field [0001] The invention relates to the technical field of construction engineering, in particular to a piping extension system for tunnel excavation. Background technique [0002] Mudwater shield construction technology refers to a tunneling method that injects muddy water into the sealed compartment of the shield excavation surface, excavates through the shield machine, and discharges the excavated slag in turn. The mud water required in this construction method is provided by the mud water treatment equipment installed on the ground near the launch shaft through the mud delivery pipe, and after excavation, it is discharged with the mud discharge equipment on the ground through the mud discharge pipe. The mud feeding and discharging pipes need to be extended in sequence as the excavation process proceeds. In the conventional technology, the pipe extension work was performed directly behind the tunnel boring machine in the tunnel boring direction. Specifically...

AI Technical Summary

Problems solved by technology

Specifically, at the back of the tunnel boring machine, the feeding and discharging mixing pipes are separated, and after the new feeding and discharging pipes are connected to the front of the existing mud feeding and discharging pipes in the advancing direction through the ground, they are installed on the tunnel boring machine. The piping extension auxiliary device (telescopic pipe, etc.) is installed between the existing mud feeding and discharging pipes, and the piping is extended. In the well, because the joint position of the new mud feeding and discharging pipe will continue to move forward with the excavation, the transportation of the new mud feeding and discharging pipe to the back of the roadheader will also be extended with the excavation distance It becomes troublesome. In addition, in the well of a large-diameter tunnel (more than 10m), the transportation of the new mud discharge pipe and the joint work require a mobile trolley and a crane dedicated to pipe replacement.

However, the rear of the tunnel boring machine is a space for segment assembly and lining work. If the above machines are placed, there is room for adjustment

In addition, in order to reduce the number of transportation of pipes, new pipes can be stored near the rear of the tunnel boring machine, but if it is a small-diameter tunnel, there is not enough storage space, and in the joint extension work, it needs to be removed After the joint, the muddy water and soil sand remaining in the pipe will be ejected in an indeterminate amount, and the cleaning of the sludge has become an essential task. Therefore, we propose a pipe for tunneling Extend the system to solve the above problems

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