A construction method of electromagnetic welding for tunnel waterproof board

Abstract

The invention discloses an electromagnetic welding construction method for a tunnel waterproof plate. The electromagnetic welding construction method for the tunnel waterproof plate comprises the steps that 1, a primary supporting face is pretreated; 2, a geotechnical cloth buffering layer is laid on the primary supporting face and fixed to the primary supporting face through multiple hard plasticgaskets; 3, the waterproof plate is laid on the geotechnical cloth buffering layer; and 4, the waterproof plate is electromagnetically welded with an electromagnetic welding machine, specifically, the waterproof plate is compressed and closely attached to the primary supporting face, an electromagnetic welding machine gun head is aligned with one hard plastic gasket and compresses the hard plastic gasket, after the electromagnetic welding machine is started, the hard plastic gasket and the waterproof plate are molten and adhered together, the electromagnetic welding machine gun head stopped,and welding between all the hard plastic gaskets and the waterproof plate is sequentially completed, wherein, a layer of an iron wire net is fixed to the outer surface, attached to the waterproof plate, of each hard plastic gasket. The electromagnetic welding construction method for the tunnel waterproof plate has the advantages of being good in welding effect, high in construction efficiency andthe like and can be widely applied to the technical field of tunnel waterproof plate construction.

Description

technical field [0001] The invention relates to the technical field of tunnel waterproof board construction. More specifically, the present invention relates to an electromagnetic welding construction method of a tunnel waterproof board. Background technique [0002] With the continuous development of the current transportation industry, the mileage of railway tunnels is also increasing, and my country's technical and safety requirements for railway tunnel construction are becoming higher and higher. The poor construction quality of the tunnel waterproof layer will cause water leakage in the tunnel, and in severe cases, the stability of the secondary lining will be damaged. Therefore, the most important issue in tunnel construction is to choose construction techniques and materials that are easier to guarantee the construction quality. The process quality must be strictly controlled to fundamentally eliminate tunnel defects and ensure project quality. [0003] At present, ...

AI Technical Summary

Problems solved by technology

The hanging of the sling is because the waterproof board cannot be closely attached to the surrounding rock, and the gap behind the back is large, which may easily cause the thickness of the second lining to be insufficient or the back of the second lining to be empty and not dense

The hot-melt welding of the electric heating pressure welder is greatly affected by the melting point of the waterproof board and the hot-melt gasket. It is difficult for the operator to grasp the hot-melt time and pressure welding strength. Welding scorching, welding penetration, and weak welding have become common quality problems, which seriously affect the waterproof layer. quality

Ultrasonic welding can significantly improve the construction quality of the waterproof board. There are many welding points, slow construction speed, easy welding through the waterproof board, and high requirements for workers.

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