An intelligent multi-stage pressure-reducing drainage system for a tunnel and its application method

Abstract

The invention provides an intelligent multi-stage pressure-reducing drainage system for a tunnel and a method for using it, including a tunnel support structure and a conventional tunnel drainage system. The tunnel support structure includes: a primary support structure for supporting the surrounding rock of the tunnel; a secondary lining structure, which is set inside the primary support structure; inverted arch filling, which extends axially along the upper surface of the inverted arch; the conventional drainage system of the tunnel includes: side trenches, which are set on both sides of the inverted arch filling, and central trenches, which are set on the inverted arch Filling the middle position also includes a multi-stage drainage structure. The multi-stage drainage structure includes: the tunnel bottom drainage structure, which runs through the bottom of the tunnel support structure. Rock, side wall drainage structure, which runs through the tunnel support structure at the side wall, one end of the side wall drainage structure is connected to the side ditch, and the other end extends into the surrounding rock on the side of the tunnel. The invention has dynamic drainage capacity, convenient application, and an "early warning-warning" water disaster prevention and control system.

Description

technical field [0001] The invention relates to the field of waterproof and drainage systems, in particular to an intelligent multi-stage pressure-reducing drainage system for tunnels; the invention also specifically relates to a method for using the intelligent multi-stage pressure-reducing drainage system for tunnels. Background technique [0002] In karst tunnels, operating tunnels will be affected by groundwater, resulting in poor structural deformation, tunnel water leakage, structural cracking and damage, structural collapse and other phenomena, which seriously affect the safety of the tunnel structure and restrict the function of the tunnel. [0003] Comparative document 1: Chinese invention patent publication CN101798939A, publication date 20130424, discloses a maintainable tunnel drainage system. It includes two longitudinal drainage ditches, multiple horizontal and vertical drainage blind pipes, multiple circular blind pipes, multiple inspection wells and two side ...

AI Technical Summary

Problems solved by technology

[0004] However, there are still the following deficiencies in the prior art: (1) The formation water level will fluctuate significantly due to surface rainfall, while the effective drainage channel of the tunnel is fixed; this will make it difficult to effectively control when the number of drainage pipes is small water pressure, and when the number of drainage pipes is large, the drainage volume of the tunnel is too large, which is not conducive to ecological protection

(2) Under the existing drainage system, there are many corners of drainage facilities and most of them are hidden in the structure. Once the problem of pipe plugging occurs, it is difficult to effectively solve it

(3) The existing technology lacks a dynamic feedback function, and has not established an "early warning-warning" prevention and control system for water damage in operational tunnels. It is impossible to take timely measures to avoid the seriousness of the disease when the disease is relatively light. irreversible damage

[0005] Therefore, it is necessary to provide an intelligent multi-stage pressure-reducing drainage system for tunnels and its use method to solve the problems that the effective drainage channel of the tunnel is difficult to cope with the fluctuation of the ground water pressure, the drainage facilities are difficult to maintain, and the drainage facilities lack the on-site dynamic feedback function.

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