Microorganism seepage-proofing grouting device and method of lining segment of river-crossing tunnel

Abstract

The invention discloses a microorganism seepage-proofing grouting device and method of a lining segment of a river-crossing tunnel. A first conveying pipe and a second conveying pipe are arranged in aperipheral water-rich soil layer of the river-crossing tunnel, wherein one end of the first conveying pipe communicates with a first container, one end of the second conveying pipe communicates witha second container, and the other end of the first conveying pipe and the other end of the second conveying pipe are sealed. A first grouting hole and a second grouting hole are formed in the positions, at least corresponding to the to-be-blocked lining segment area, of the first conveying pipe and the second conveying pipe. In the grouting process, though the water head differences between the interiors of the first container and the second container and river water corresponding to the positions of the river-crossing tunnel, a first mixed solution and a second mixed solution are promoted toflow into the peripheral water-rich soil layer of the river-crossing tunnel through the first grouting hole and the second grouting hole and are slowly annularly diffused and mixed along the peripheryof the river-crossing tunnel, finally microorganism slurry in the first mixed solution and a nutrient solution in the second mixed solution react so as to form a layer of annular biogel reinforcementband wrapping the lining segment from the periphery, and therefore gaps between the lining segments are blocked.

Description

technical field [0001] The invention relates to the technical field of tunnel engineering construction and maintenance, in particular to a microbial anti-seepage grouting device and method for a lining segment of a river-crossing tunnel. Background technique [0002] The location of the river crossing tunnel is surrounded by river water, and the joints of the lining segments of the river crossing tunnel are easily infiltrated by river water, which affects its safety in use and further reduces its service life. Therefore, effective methods must be adopted to effectively seal the gaps between the lining segments of the river-crossing tunnel to prevent river water from seeping into the river-crossing tunnel through the gaps, so as to ensure the safety and service life of the river-crossing tunnel . [0003] If the microbial slurry and nutrient solution can be injected into the water-rich soil layer outside the river-crossing tunnel, the microbial slurry and nutrient solution c...

AI Technical Summary

Problems solved by technology

[0002] The location of the river crossing tunnel is surrounded by river water, and the joints of the lining segments of the river crossing tunnel are easily infiltrated by river water, which affects its safety and further reduces its service life

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