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Cold seam treatment method of canal-type cement-soil continuous wall

A treatment method and soil-cement technology, applied in sheet pile walls, water conservancy projects, underwater structures, etc., can solve problems such as pipeline damage, damage to underground pipelines, complicated and inconvenient operations, and achieve the effect of ensuring impermeability.

Active Publication Date: 2017-09-29
DONGTONG ROCK SOIL SCI & TECH HANGZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, in order to eliminate the wide cold joints, the pipelines on the wall-building route are often removed in advance, and then the construction of the canal-cut cement-soil diaphragm wall is carried out; although this can eliminate the wide cold joints of the canal-cut cement-soil diaphragm wall, it destroys The original underground pipeline needs to be repaired after the construction of the canal-cut cement-soil diaphragm wall is completed, which is not only complicated and inconvenient to operate, but also may cause other adverse effects due to the damage of the pipeline

Method used

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  • Cold seam treatment method of canal-type cement-soil continuous wall

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1: as figure 1 As shown in the figure, a cold joint treatment method for a canal-type cement-soil continuous wall includes the following steps in sequence:

[0029] A: Construct the front channel-type cement-soil diaphragm wall 1 along the wall-building direction in the foundation soil layer, and the horizontal distance between the front-section channel-type soil-cement diaphragm wall and the pipeline 3 in the foundation soil layer is L1 meter. The value of L1 in this embodiment is 0.4 or 0.6 or 0.8 or 1 or 1.2 meters.

[0030] B: Construct the rear canal-type cement-soil continuous wall 5 along the wall-building direction in the foundation soil layer. The horizontal distance between the back channel-type cement-soil diaphragm wall and the pipeline in the foundation soil layer is L2 meters. The value of L2 in this embodiment is 0.4 or 0.6 or 0.8 or 1 or 1.2 meters. The height of the front channel-type cement-soil diaphragm wall is the same as that of the rear...

Embodiment 2

[0034] Embodiment 2: a cold seam treatment method for a channel-type cement-soil diaphragm wall, comprising the following steps in turn:

[0035] A: The front channel-type cement-soil diaphragm wall is constructed along the wall-building direction in the foundation soil layer, and the horizontal distance between the front-end channel-type cement-soil diaphragm wall and the pipeline in the foundation soil layer is L1 meters. The value of L1 in this embodiment is 0.4 or 0.6 or 0.8 or 1 or 1.2 meters.

[0036] B: Construct the rear canal-type cement-soil diaphragm wall along the wall-building direction in the foundation soil layer. The horizontal distance between the back channel-type cement-soil diaphragm wall and the pipeline in the foundation soil layer is L2 meters. The value of L2 in this embodiment is 0.4 or 0.6 or 0.8 or 1 or 1.2 meters. The height of the front channel-type cement-soil diaphragm wall is the same as that of the rear channel-type cement-soil diaphragm wall...

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Abstract

The invention discloses a cold gap treatment method of a trench type cement soil continuous wall, and aims to provide the cold gap treatment method for guaranteeing total seepage resistance of the trench type cement soil continuous wall through filling a wide cold gap caused by incapability of moving a underground pipeline under the conditions of not breaking and not moving the underground pipeline. The cold gap treatment method comprises the following steps in sequence: (A) a front section of the trench type cement soil continuous wall is constructed in a foundation soil layer in the wall building direction; (B) a back section of the trench type cement soil continuous wall is constructed in the foundation soil layer in the wall building direction; (C) the foundation soil layer between the front section of the trench type cement soil continuous wall and the back section of the trench type cement soil continuous wall is excavated by a manual excavating method; and a manual pile hole is formed between the front section of the trench type cement soil continuous wall and the back section of the trench type cement soil continuous wall; and (D) a manual concrete pile is cast in the manual pile hole.

Description

technical field [0001] The invention relates to the field of enclosure structures of underground spaces, in particular to a method for treating cold seams of canal-type cement-soil continuous walls. Background technique [0002] The construction method of the canal cutting cement-soil diaphragm wall (TRD method) is a chain saw that is vertically inserted into the ground of the foundation soil layer, and the chain saw is connected to the port of the chain saw. It is a construction method of constructing an underground continuous wall of equal thickness by cutting out canal cutting grooves on the foundation soil layer and injecting cement solidified liquid to mix the cement soil underground wall formed by mixing it with the original soil layer. [0003] In the construction of urban underground space, due to objective reasons, there are often pipelines that cross the road space that cannot be removed or relocated; while in the construction of the canal-cut cement-soil diaphragm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D29/16E02D5/18
CPCE02D5/185E02D29/16
Inventor 胡焕胡琦张治纯
Owner DONGTONG ROCK SOIL SCI & TECH HANGZHOU