Advance monitoring and early warning device for leakage of concrete construction joint of underground structure and construction method

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 advance monitoring and early warning device for leakage of concrete construction joints in underground structures and a construction method. Background technique [0002] The anti-seepage and anti-leakage of underground structures below the groundwater level has been immersed in groundwater for a long time, and its anti-seepage and leakage prevention has always been one of the most difficult points in underground engineering construction. The leakage of underground structures mostly occurs at the interface between the first and last concrete pouring, such as the horizontal construction joints, settlement joints, roof junctions and roof post-pouring belts of the wall. These weak locations of anti-seepage and leakage prevention are the main focus of leakage monitoring. [0003] The leakage monitoring technology currently in use can only be detected after the struc...

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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