Horizontal steel tube occluding water blocking tube curtain and construction method thereof

Abstract

The invention discloses a horizontal steel tube occluding water blocking tube curtain and construction method of the horizontal steel tube occluding water blocking tube curtain, and relates to a waterproof structure of an underground passage and a construction method of the waterproof structure. Horizontal steel tubes of the horizontal steel tube occluding water blocking tube curtain comprises a reference occluding steel tube, a bidirectional occluding steel tube and a plurality of unidirectional occluding steel tubes, and the reference occluding steel tube, the bidirectional occluding steel tube and the unidirectional occluding steel tubes are connected in sequence to form an annular surrounding curtain which surrounds a road underneath passing passage. A stand plate is arranged in the reference occluding steel tube and divides the inner hole of the occluding steel tube into a left space and a right space. Inserting grooves are formed in the left side and the right side of the reference occluding steel tube respectively. T-shaped wing plates are arranged on the left side and the right side of the bidirectional occluding steel tube respectively, a T-shaped wing plate is arranged on the left side of each unidirectional occluding steel tube, and an inserting groove is formed in the right side of each unidirectional occluding steel tube. The wing plate of a first unidirectional occluding steel tube is inserted into the right space on the right side of the reference occluding steel tube, and the wing plate of each of the rest unidirectional occluding steel tubes is inserted into the inner hole of the unidirectional occluding steel tube ahead. The wing plates on the two sides of the bidirectional occluding steel tube are inserted into the inner hole of a last unidirectional occluding steel tube and the left space in the left side of the reference occluding steel tube respectively. The reference occluding steel tube and the inner holes of all the unidirectional occluding steel tubes are all filled with cement mortar.

Description

technical field [0001] The invention relates to a waterproof structure of an underground passage and a construction method thereof. Background technique [0002] When constructing the underpass tunnel of the municipal road in the sandstone stratum under the existing offshore shallow buried water-permeable geological conditions, it is necessary to first carry out the water sealing and reinforcement of the surrounding rock, and then excavate the surrounding rock and soil of the underpass tunnel, and follow up the underpass in time Construction of the second lining structure of the passage tunnel. A typical water-stop reinforcement construction method for surrounding rocks is to use multiple horizontal steel pipes to build pipe sheds in sandstone formations. The structure of the pipe shed, such as figure 1 Shown: the sand and gravel formation 10 below the municipal road 20 is drilled around the upper part and both sides of the channel 130, and horizontal steel pipes 30 are re...

AI Technical Summary

Problems solved by technology

[0003] When the highest tide level of seawater is higher than the lower end of the pipe shed, the use of pipe shed to stop water has the following disadvantages: (1) The horizontal steel pipes in the pipe shed are not connected to each other and cannot form a fully enclosed enclosure. Grouting is required to make the enclosure The rock is consolidated to form a water-stop enclosure. Due to the influence of seawater tides, the grout injected into the pipe shed steel pipe will be lost. It may exist that the soil between the pipe shed steel pipes cannot be consolidated, and a good water-stop enclosure cannot really be formed. Case

(2) In the case where the pipe shed curtain fails to form a good effect, the full-section pouring of the surrounding rock in the pipe shed will also be affected by the sea tide, and the cement slurry will be lost from the pipe shed, which cannot be achieved. The effect of partial surrounding rock consolidation

In short, the pipe shed cannot fully play the role of water-stop and reinforcement of the surrounding rock in the construction of the municipal road underpass in the sandstone stratum under the offshore shallow buried permeable geological conditions.

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