Tunnel construction process

Abstract

The invention discloses a tunnel construction process. The tunnel construction process comprises a preparation process, a waterproof and drainage process and a pouring process; the preparation processcomprises the steps that firstly, an inverted arch trolley is in place, and matching inspection is carried out on the size of the trolley and the size of a tunnel; secondly, cleaning is carried out on the base surface of the tunnel, and leveling with concrete is carried out; the waterproof and drainage process comprises the steps that firstly, geotechnical cloth is laid on the base surface of thetunnel, a waterproof plate is laid; afterwards, a water drainage pipe is laid in the longitudinal direction of the tunnel, and the longitudinal water drainage pipe is wrapped with geotechnical cloth,so that mud and sand cannot enter the water drainage pipe; and the pouring process comprises the steps that secondary lining is carried out by using the inverted arch trolley, a telescopic mechanismis driven to open a form for pouring, and after pouring is completed, the telescopic mechanism is driven to retract so as to retract the form.

Description

technical field [0001] The invention relates to the field of tunnel construction, in particular to a tunnel construction process. Background technique [0002] In the construction process of domestic mine roadways, railway and highway tunnels, water conservancy culverts, various underground projects, high-rise building foundation pits, military projects, etc., the tunnel inverted arch is set at the bottom of the tunnel to improve the stress condition of the upper support structure. The reverse arch structure is one of the main components of the tunnel structure. On the one hand, it needs to transmit the ground pressure in the upper part of the tunnel through the tunnel side wall structure or effectively transfer the load on the road to the underground, and it can also effectively resist the lower part of the tunnel. The reaction force from the ground. The inverted arch and the secondary lining constitute the tunnel as a whole, increasing the structural stability. In order ...

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Problems solved by technology

[0005] 2. The inverted arch trolley in the prior art has a huge volume, but it still needs a certain degree of flexibility for mobile operation, so how to choose the specification of the jacking piston cylinder becomes a difficult problem, and the piston cylinder with a relatively small specification is still used in the prior art , to adapt to the size and flexibility, installability

[0006] 3. The inverted arch trolley of the prior art only considers the use of the piston cylinder, but does not consider the stability of the piston cylinder. Since the trolley will have lateral adjustment operations and forward and backward movement during use, the stability of the piston cylinder needs to be included consider

[0007] 4. In the prior art, the design of the base of the piston cylinder is often a neglected issue. However, due to the large size of the inverted arch trolley, the base must also increase accordingly. How to ensure the stability and economy of the base is not available in the prior art. related design

[0008] 5. The inverted arch trolley in the prior art has the problem of unbalanced center of gravity because the length of the track is shorter than the length of the trolley, and construction techniques such as tamping are required

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