Infiltration water detection and plugging renovation devices and methods for underground continuous wall groove segment seam

Abstract

The invention relates to a water leakage detection and caulking recovery device for joints of slotted sections of an underground diaphragm wall, which is characterized in that the water leakage detection and caulking recovery device consists of steel pipes, bearing hoses and a crossed water-seal steel plate, wherein insides of the steel pipes are provided with the bearing hoses the length of which is the same as that of the steel pipe, and lower ends of the bearing hoses are sealed; upper ends of the bearing hoses are connected with a water-filling compression system; the steel pipes are vertically and fixedly connected along one side of the crossed water-seal steel plate; grouting holes are uniformly distributed on the circumference of the steel pipes; upper ends of the steel pipes are connected with a high-pressure grouting system; and slow expanding adhesive tapes are arranged on fixedly-connected gaps of the steep pipes and the crossed water-seal steel plate. The method comprises the following steps: the water leakage detection and caulking recovery device is buried into the underground along with wall-connecting construction; the bearing hoses are filled with water and pressurized to 0.5 MPa, so as to be expanded to extrude inner cavities of the steel pipes; and the bearing hoses are subjected to removal of the pressure and pulled out after wall-connecting concrete casting of two adjacent slotted sections is finished. The water leakage detection and caulking recovery device has the advantages of realizing leakage detection before excavation of a foundation pit and preventing the safety risk caused by water leakage after excavation due to in situ recovery construction.

Description

technical field [0001] The invention belongs to the building construction operation technology, and in particular relates to a device and method for detecting leakage water at joints of underground continuous wall groove sections when a subway station or other underground buildings are constructed by the cover-excavation method. Background technique [0002] When the underground building adopts the reverse construction method, the outer wall of the underground building (ground connection wall) is made first, and then the zero floor slab is made, and then the foundation pit is excavated and excavated under the zero floor slab, and the underground is gradually constructed from top to bottom. The internal structure of the building such as concrete beams, slabs, etc. Due to the limitations of the current construction technology and construction technology, especially the uncertain factors under complex geological conditions, it is a common phenomenon that leakage occurs at the j...

AI Technical Summary

Problems solved by technology

[0007] If after the excavation of the foundation pit, measures are taken to deal with the leakage of the ground connection wall, the first is that the treatment lags behind, which is likely to affect the construction of the project, the surrounding environment, and even cause safety accidents. The treatment measures will have a large economic investment. The third is that the post-treatment measures are complicated in technology and difficult in construction. They have complex and strict requirements on the work site, construction time, materials, equipment, and technical personnel.

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