Method for leaking stoppage of external wall of underground structure

Abstract

The invention discloses a method for leaking stoppage of an external wall of an underground structure, which comprises the following steps: (1) drilling the external wall of the underground structure; (2) embedding a grouting pipe; (3) grouting; and (4) cutting the grouting pipe, and repairing the hole. The method adopts a path opposite to the ground water seepage path, and the cement slurry is filled in the gap on the back of the wall, thereby realizing the purpose of stopping water. The active leaking stoppage outside the side wall of the underground structure is achieved through drilling the external wall of the underground structure, embedding the grouting pipe, filling the seepage crack with the cement slurry and blocking the water flow channel. Therefore, the method has a wide scope of application, and can be used for seepage treatment of cracks caused for different reasons. The construction is simple, the scope of one-time treatment is large, and the cost of the method is lower than the method of leaking stoppage through chemical grouting. Moreover, no grouting of crack slots is needed for leaking stoppage, thereby reducing the damage to the concrete appearance; and simultaneously, the effect of leaking stoppage is good, and no repeated leakage can occur. Therefore, the method can be widely applied in leaking stoppage of construction joints, expansion holes, settlement joints, temperature shrinkage cracks and other cracks.

Description

technical field [0001] The invention relates to the field of building construction, in particular to a plugging treatment for all cracks such as construction joints, expansion holes, settlement joints and temperature shrinkage cracks of underground structures. Background technique [0002] At present, after the construction of the exterior wall of the underground structure is completed, the concrete will generally shrink, which will cause the exterior wall to separate from the waterproof layer and form a gap; in addition, when the surface of the exterior wall is uneven, there will be a certain gap between the waterproof layer and the exterior wall During the construction process, the waterproof layer will be damaged, and groundwater will seep along the waterproof layer. The gap between the exterior wall and the waterproof layer and the enclosure structure is filled with water. When there are through cracks on the surface of the exterior wall, the exterior wall will leak, whi...

AI Technical Summary

Problems solved by technology

At present, there are generally two methods for repairing cracks: 1. The method of applying epoxy cement on the surface. This method has poor plugging effect and is prone to re-leakage. 2. Chemical grouting filling and sealing method. The effect is good, but the cost is high, and when grouting, it is necessary to drill grooves along the cracks before grouting and plugging, and the appearance of the concrete will be greatly damaged, making it difficult to meet the quality requirements