Grout spraying equipment for tunnel roof-supporting shield

Abstract

The invention relates to the technical field of tunnel engineering, in particular to grout spraying equipment for a tunnel roof-supporting shield. The grout spraying equipment comprises a walking track, a shield platform located on the walking track and a shield machine head arranged at the front end of the shield platform, and further comprises an automatic mixing device, residual soil 3D printing equipment, a spray head and an automatic conveying device, wherein a residual soil conveying pipe is connected to the shield machine head; the automatic mixing device is fixedly installed on the shield platform, and communicates with the residual soil conveying pipe, the residual soil 3D printing equipment is fixedly installed on the shield platform and is adjacent to the automatic mixing device; the automatic conveying device is arranged between the automatic mixing device and the residual soil 3D printing equipment, and the spray head is connected to the residual soil 3D printing equipment. According to the grout spraying equipment for the tunnel roof-supporting shield, zero worker participation in the primary lining process of the tunnel shield is realized, and the residue soil produced by the shield is recycled, so that the cost is reduced, the environmental pollution is reduced, and the efficient construction is realized.

Description

technical field [0001] The invention relates to the technical field of tunnels and underground engineering, in particular to a tunnel roof support shield spraying equipment. Background technique [0002] At present, in the soft rock with no groundwater or little groundwater, such as IV and V surrounding rocks or soil and rock formations, the shield tunneling method is usually used for tunnel construction. The shield method is a fully mechanized construction method in tunnel and underground engineering construction. It is to push the shield machine in the ground, and use the shield casing and segments to support the surrounding rock to prevent the tunnel from collapsing. In front of the excavation face, a cutting device is used to excavate the soil body, and it is transported out of the hole by the excavation machine, and the jack is used to pressurize and jack the lining assembled into a ring at the rear, and then assemble the precast concrete segments to form a mechanized t...

AI Technical Summary

Problems solved by technology

Due to the large amount of dust generated during spraying, the air pollution is serious and it is inconvenient for workers to construct for a long time. While the construction labor cost increases, the construction progress is slow

In addition, part of the concrete will fall off during the spraying process, resulting in material waste, and the mud waste generated by the shield machine is difficult to deal with

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