Grouting device and grouting technique for tunnel lining vault with mould

Abstract

The invention provides a grouting device and grouting technique for a tunnel lining vault with a mould. The grouting device comprises a lining concrete pouring template, a grouting pipe, a fixing device, a throttling device, a flow-splitting device, a feeding device and a control device, wherein a mounting hole is formed in the lining concrete pouring template; the grouting pipe penetrates through the mounting hole, and the fixing device is used for fixedly connecting the grouting pipe; one end of the throttling device is communicated with the grouting pipe while the other end is communicated with an output port of the flow-splitting device; the feeding device is communicated with an input port of the flow-splitting device and is used for conveying grouting slurry to the grouting pipe; and the control device is connected with the feeding device and is used for controlling the starting/stopping of the feeding device. According to the invention, the water leakage problem of the secondary lining concrete caused by the waterproof plate being easily broken in the traditional later punching grouting process is solved, and the filled grouting liquid and concrete are formed into a stressed whole body, so that the empty lining and the defect of two-layer skin of the traditional grouting technique are overcome, and the risks in cracking and falling of the lining concrete are reduced.

Description

Technical field [0001] The invention relates to the technical field of tunnel engineering, in particular to a grouting device and a grouting process for a tunnel lining vault with a mold. Background technique [0002] my country is a mountainous country, so the number of tunnels is huge. In the construction of the tunnel lining (second lining), due to the special position of the vault, the construction may cause unreasonable setting of reserved and plugging holes during the construction, the pumped concrete has a large slump, and the pumped concrete pressure is not well controlled. Shrinkage, uneven support and other reasons will inevitably cause the second-lined vault to not closely adhere to the primary concrete support surface, and the concrete sealing of the arch is prone to voids and voids. Due to the defects of the secondary lining, the force of the lining is uneven, which deteriorates the force condition of the lining, and changes the design force state of the lining. The...

AI Technical Summary

Problems solved by technology

[0008] An object of the present invention is to provide a tunnel lining vault belt mold grouting device, to solve the concrete leakage water that exists in the perforated grouting technology in the past and the technical problem that the existing belt mold grouting method cannot be realized on site, and at the same time , real-time monitoring of the secondary lining concrete pouring and molded grouting process can be carried out, so that prevention is the first and nip in the bud

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