Advanced monitoring and early warning device and construction method for leakage of concrete construction joints in underground structures

Abstract

The invention discloses an advance monitoring and early warning device for the leakage of a concrete construction joint of an underground structure and a construction method. The device comprises detectors, a data acquisition instrument and a computer terminal; each detector comprises a damp-proof layer, a plurality of pieces of water swelling rubber, a plurality of miniature pressure boxes, a pressure box lead pipeline, a plurality of pressure box leads and the like; the bottom parts of all pieces of water swelling rubber are tightly attached to the damp-proof layers correspondingly, and thetop part of each piece of water swelling rubber is tightly attached to the corresponding miniature pressure box; each miniature pressure box is connected with the data acquisition instrument through the corresponding pressure box lead; the data acquisition instrument is connected with the computer terminal; the computer terminal is used for calibrating a relation curve between the pressure of theminiature pressure boxes and water leakage amount; and by comparing pressure information transmitted from the different miniature pressure boxes, the reaching position of leakage water is judged, andan early warning is given out in good time. During the installation and construction of the device disclosed by the invention, an existing structure does not need to be perforated additionally, so that the anti-leakage performance of the structure is not influenced; and the leakage path and the water leakage amount of the leakage water in the construction joint can be monitored in real time so asto achieve a leakage early warning function.

Description

technical field [0001] The invention belongs to the field of underground structure leakage monitoring, and relates to an advanced monitoring and early warning device and a construction method for the leakage of underground structure concrete construction joints. Background technique [0002] Underground structures below the groundwater table have been immersed in groundwater for a long time, and their anti-seepage and anti-leakage have always been one of the most difficult points in underground engineering construction. Leakage of underground structures mostly occurs at the interface between the first and second pouring of concrete, such as the horizontal construction joints of the wall, settlement joints, the junction of the roof, and the post-casting zone of the roof. These weak spots of impermeability and leakage are the main focus of leak monitoring. [0003] The leakage monitoring technology currently used cannot be detected until the leakage occurs in the structure, t...

AI Technical Summary

Problems solved by technology

For some underground spaces that are very sensitive to water leakage, such as precision electronic equipment room, high-risk chemical storage room, etc., the mode of first leakage and then treatment obviously has major risks and hidden dangers

[0004] Currently used leakage monitoring devices are installed after the construction of the main structure is completed, and then drilled or reserved for installation. The installation process has a certain weakening of the impermeability of the structure, which plays an important role in anti-seepage and anti-leakage. reaction

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