Supporting structure with waterproof and drainage function and suitable for water-rich stratum and construction method

Abstract

The invention discloses a supporting structure with a waterproof and drainage function and suitable for a water-rich stratum and a construction method. Sprayed concrete is located on the outermost layer of the supporting structure and attached to tunnel surrounding rock. Non-woven fabric is laid on the inner surface of the sprayed concrete, a steel corrugated plate is laid on the inner surface ofthe non-woven fabric, and outer side wave crests are tightly attached to the non-woven fabric. Annular drainage blind pipes are laid on an arch crown and an arch wall in the annular direction of a tunnel and embedded between troughs on the outer side of the steel corrugated plate and the non-woven fabric. Longitudinal drainage blind pipes are arranged between the steel corrugated plate and the non-woven fabric in the longitudinal depth direction of the tunnel and are connected with the end parts of the annular drainage blind pipes. One end of a transverse drainage blind pipe penetrates throughthe steel corrugated plate to be connected with the longitudinal drainage blind pipe, and the other end leads to a drainage ditch at an arch foot. Secondary lining is constructed on the inner side ofthe steel corrugated plate. The construction speed of preliminary supporting is increased, the drainage blind pipes can be used for further replacing a waterproof layer of a traditional tunnel, and the supporting structure can be widely applied to various water-rich stratum tunnels with high waterproof and drainage requirements.

Description

technical field [0001] The invention relates to the technical field, in particular to a support structure and construction method suitable for water-rich formations with waterproof and drainage functions. Background technique [0002] In recent years, with the rapid development of my country's infrastructure construction, the number of tunnel projects built in the construction of roads, railways, water conservancy and other projects has also increased. The complexity and risks in the construction process of tunnel engineering require the safety and practicability of the lining structure of the tunnel engineering to be high. When the tunnel passes through the water-rich stratum, higher requirements are put forward for the waterproof and drainage design of the tunnel. [0003] The traditional tunnel composite lining includes primary support, secondary lining, and a waterproof layer between the primary support and secondary lining. The construction process is complex, the proce...

AI Technical Summary

Problems solved by technology

[0003] Traditional tunnel composite lining includes primary support, secondary lining, and waterproof layer between primary support and secondary lining. There are many construction procedures, complicated process, many consumables, long period and high project cost.

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