Method for leaking stoppage of underground diaphragm wall surface

Abstract

The invention discloses a method for leaking stoppage of an underground diaphragm wall surface, and the underground diaphragm wall surface is arranged close to a soil body. The method comprises the following steps: (1) finding a water seepage point of the underground diaphragm wall; (2) digging a guide hole in the center of the water seepage point, the guide hole penetrating through the underground diaphragm wall, then a guide tube with a valve penetrating through the guide hole, the front end of the guide tube extending to the water seepage point of the soil body on the inner side of the underground diaphragm wall, arranging a filter screen at the front end of the guide tube, the rear end of the guide tube extending to the outer side of the underground diaphragm wall, and the rear end ofthe guide tube penetrating through a plugging board, and fixedly arranging the plugging board on the underground diaphragm wall; (3) injecting an edge sealing material into a gap where the plugging board is in contact with the underground diaphragm wall; (4) opening the valve on the flow guide tube, draining water at the water seepage point through the flow guide tube, and then performing pressurized grouting plugging on the water seepage point through the flow guide tube until the whole water leakage position and the flow guide tube are filled with water; and (5) closing the valve. Accordingto the method, damage to the underground diaphragm wall is small, and the wall surface of the water seepage position can be quickly and effectively blocked.

Description

technical field [0001] The invention relates to the field of building construction, in particular to a method for plugging leaks on the surface of an underground diaphragm wall. The method for plugging leaks is suitable for the construction of water leakage, quicksand, gushing water, etc. on the wall of an underground diaphragm wall. Background technique [0002] Under the conditions of deep and large foundation pits or complex geological conditions, more and more underground diaphragm walls are used in the enclosure structure of underground engineering. Since the underground diaphragm wall is easily affected by the hydrogeological environment, and the current construction technology and construction technology are limited, it is a common phenomenon that the underground diaphragm wall leaks due to insufficient concrete pouring. Therefore, during the excavation of the foundation pit, the underground continuous The plugging of walls and joints determines the safety and quality...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for plugging leakage of underground continuous wall, so as to overcome the shortcomings of serious damage to the wall, poor sealing effect and slow construction progress in the process of plugging underground continuous wall

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