Water-proof method for seepagetunnel with super burial depth

Abstract

The invention provides a water-proof method for a seepagetunnel with super burial depth. The method comprises the following steps: before the construction, carrying out the step of increasing the thickness of duct pieces and the step of enhancing the connection between contact surfaces and end faces of the duct pieces, wherein the step of enhancing the connection between the contact surfaces and the end faces of the duct pieces comprises the following steps: increasing the quantity of annular bolts and adding a rebate groove on the annular surfaces of the duct pieces; and increasing positioning rods and double-channel waterstop bands on the end faces of the duct pieces; during the construction, sealing the top of a tube piece lining with a top block of small size when assembling the wedged tube pieces; and selecting rational grouting points on the assembled duct pieces to synchronous grout the duct pieces; and after the construction, filling and blocking handholes and caulked joints of the duct pieces. By using the technical scheme, improving the original duct piece design and constituting a rational construction process, the method ensures the forming quality of the tunnel and controls the synchronous grouting and ensures the stability of the tunnel and the caulked joints of the tunnel and the like so as to meet the water-proof requirement of the seepagetunnel with super burial depth.

Description

technical field [0001] The invention relates to a waterproof method during tunnel construction, in particular to a waterproof method for super-buried deep water diversion tunnels. Background technique [0002] With the rapid development of urban underground engineering construction, tunnel engineering is gradually developing towards deeper burial, longer distance, and diversified functions. The general tunnel waterproof technology can no longer meet the requirements of the existing construction progress, especially how to effectively ensure The waterproof index of the drinking water tunnel has become a key consideration for the design and construction units. [0003] The current tunnel waterproofing has relatively large limitations. The constraints of traditional waterproofing technology include: the large buried depth of the tunnel, the effect of internal and external pressure after the diversion tunnel is filled with water, and whether the quality of drinking water can be ...

AI Technical Summary

Problems solved by technology

[0004] In the construction of tunnels with an average buried depth of more than 20 meters, there is no particularly effective method to ensure the waterproof effect. Under such conditions, it is necessary to innovate the method of tunnel waterproofing to meet the waterproof technical requirements of ultra-deep diversion tunnels

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