Oblique crossing slide-resistant pile tunnel-entering retaining system for mountain tunnel breaking and construction method

Abstract

The invention discloses an oblique crossing slide-resistant pile hole-entering retaining system for mountain tunnel breaking and a construction method. The oblique crossing slide-resistant pile hole-entering retaining system for mountain tunnel breaking comprises at least one first slide-resistant pile, at least one second slide-resistant pile, a tunnel, a supporting body and at least two supporting piles, wherein the first slide-resistant piles and the second slide-resistant piles are buried in rock soil and form a slide-resistant structure; the second slide-resistant piles are locally broken, and the tunnel penetrates through the second slide-resistant piles from the local broken position; and the supporting body is higher than the tunnel, each supporting pile supports the supporting body from the two sides of the tunnel respectively, and the supporting body and the supporting piles are buried in rock soil and form a slide-resistant structure. The hole-entering retaining system has the beneficial effects that the supporting piles and the supporting body can provide a synergistic effect in the slide-resistant aspect for local breaking of the second slide-resistant piles, a superimposed slide-resistant structure is formed, and also serves as the tunnel supporting structure on the basis of reinforcement treatment; and the supporting body and the supporting piles are clear in stress mechanism, large in space rigidity, controllable in deformation, convenient to operate and implement and good in supporting effect.

Description

technical field [0001] The invention relates to the support structure technology of mountain tunnels, in particular to a support system and construction method for breaking oblique anti-slide piles in mountain tunnels. Background technique [0002] With the rapid development of various types of traffic, the conditions for tunnel construction are becoming more and more complicated. In the construction of tunnels under high and steep slopes, the existing slope retaining structure needs to be removed, which will lead to the failure of local anti-sliding structures and affect the original mountain. slope stability. [0003] In order to ensure the stability of the slope at the entrance position, a conversion system needs to be set up to bear the load borne by the demolished structure to ensure the overall stability of the new tunnel. However, due to the extremely complex stress, deformation and interaction characteristics of the existing slope anti-sliding structure and the newl...

AI Technical Summary

Problems solved by technology

[0005] In the prior art, in order to maintain the stability of the existing anti-sliding structure of the mountain slope, when it is necessary to build a mountain tunnel near the anti-sliding structure, usually the mountain tunnel can only be avoided from the existing anti-sliding structure. The technical defect lies in: the new construction The mountain tunnel needs to avoid the existing anti-skid structure, which will cause the extension of the mountain tunnel route and increase the construction cost

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