Inverted-convex overall central drainage ditch device in highway tunnel

Abstract

The invention discloses an inserted convex integral central drainage ditch device in a road tunnel. The inserted convex integral central drainage ditch device comprises steel templates, a movable hinge, a turnbuckle, square timber cross arms and skids, wherein the two steel templates are arranged symmetrically; the bottom ends of the two steel templates are connected through the movable hinge; the upper ends of the two steel templates are fixedly connected through the turnbuckle, the square timber cross arms and the skids. The concept of water prevention and drainage is implemented in a template, so that structural drainage is realized, the effects of 'combination of prevention and blockage and rapid drainage' are achieved, problems of a central ditch system are prevented fundamentally, the stability and durability of a tunnel structure are ensured, and the operation and all-life effect of the tunnel are enhanced.

Description

technical field [0001] The invention relates to the technical field of inverted arch filling construction and tunnel drainage construction of highway tunnels, in particular to an inverted-convex overall central drainage ditch device in highway tunnels. Background technique [0002] Tunnel engineering is built in underground rock and soil. The entire tunnel structure may be surrounded by groundwater, and groundwater is pervasive. Often due to insufficient understanding of geological exploration, inadequate design, construction and operation management, the tunnel Defects in the waterproof and drainage system caused water leakage in the tunnel. Up to now, tunnel water leakage has become one of the main diseases affecting highway tunnels in our country, and it is one of the most important factors affecting the normal operation and full life of highway tunnels. [0003] The waterproof and drainage of highway tunnels is a systematic project. At the same time, its permanent water...

AI Technical Summary

Problems solved by technology

The disadvantages of this method are: (1) There are too many construction procedures and the interval time is too long, which is not conducive to construction organization

(2) There are many construction joints, and there are many hidden dangers in the joints left, which are prone to water leakage, and the line shape is not smooth, which is not conducive to drainage

(3) There are many cross operations, which seriously restrict the progress and are not conducive to rapid and standardized construction

(4) High labor intensity, low production efficiency, and low pass rate

This kind of construction has many disadvantages: (1) Due to construction errors, the pre-buried pipelines often have irregular lines, poor drainage, and serious water accumulation

(2) The joints are not tightly connected, and water leakage often occurs

(3) There are often problems at the junction of the horizontal drainage blind pipe and the drainage ditch, resulting in poor drainage at the head of the horizontal drainage blind pipe, or directly collecting outside the prefabricated pipe, resulting in long-term water accumulation

(4) The opening rate of the permeable hole of the central drain pipe is limited. After a period of use, the permeable hole is easily blocked, resulting in failure

(5) The installation of corrugated pipes or prefabricated cement pipes requires small hoisting machinery, and the construction of the base must be strictly controlled. Many tasks need to be done manually, with high labor intensity, low production efficiency, and low pass rate

[0009] The central drainage pipe (ditch) is often poorly drained and soaked in accumulated water, which will lead to rupture and damage of the central drainage pipe (ditch), as well as cracks and water accumulation on the road surface. The arch of the tunnel is often soaked, and the ground will soften after infiltration , the bearing capacity is drastically reduced, the uneven settlement of the tunnel occurs, the arch foot of the tunnel converges and sinks, and even serious diseases such as cracks and uplifts on the road surface pose potential safety hazards and seriously affect the normal operation and safety of the tunnel

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