Fast plugging device for deep foundation pit precipitation well

Abstract

The rapid plugging device for deep foundation pit dewatering wells consists of sealing casing, sealing cover base, sealing cover, outer water-stop ring, inner water-stop ring, and water-stop plate. The sealing cover base is vertically fixedly connected with the lower part of the inner wall of the sealing sleeve The annular seat, on which three or more than three bolts are welded in equal circles, the sealing cover has bolt holes corresponding to the bolts on the base of the sealing cover, the inner and outer water-stop rings and the inner and outer walls of the sealing casing Vertical fixed connection, welded connection or flange connection between the water stop plate and the inner water stop ring. The device has the advantages of simple structure, low manufacturing cost, convenient use and wide applicability. It uses a unified construction process to replace various current well sealing processes. The plugging speed is fast, the cost of well sealing construction is also very low, and the construction has no risks and no safety hazards. , Put an end to the uncontrolled extraction of groundwater, which is conducive to environmental protection.

Description

technical field [0001] The invention relates to a deep foundation pit dewatering well plugging device for underground structure construction in the construction field, which is used for quickly sealing the deep foundation pit dewatering well under high water pressure after the underground structure is completed. Background technique [0002] At present, the underground structure construction of buildings in areas with low terrain and rich groundwater must adopt the dewatering measures of deep foundation pit dewatering wells, and the dewatering wells need to be blocked after the work is completed. Because the water pressure of the precipitation well is very high and the water level rises very fast, it is very important to do a good job of rapid plugging of the precipitation well. The traditional method of sealing the dewatering well mainly includes dry cement plus bare stone filling and concrete dry material filling. The disadvantages are: ① There is no special and uniform we...

AI Technical Summary

Problems solved by technology

The traditional method of sealing the dewatering well mainly includes dry cement plus bare stone filling and concrete dry material filling. The disadvantages are: ① There is no special and uniform well sealing material, well sealing process and device, Many constructions are carried out based on experience, with high risk and low success rate; ② Long sealing time during construction, high cost investment, affecting normal construction of the project; ③ Once the well sealing fails, it is easy to cause groundwater injection, and it will cost more to rescue and remedy

[0003] In order to prevent the failure of sealing the well, some construction companies have adopted some other methods to transfer or avoid the risk of sealing the well, such as using conduits to divert the water in the dewatering well to the outside of the foundation for precipitation. This method can avoid the risk of sealing the well, but To increase the input and risk during the precipitation period, and the large-scale pumping of groundwater will cause environmental damage

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