Fast plugging device for deep foundation pit precipitation well

Abstract

The invention relates to a rapid plugging device of a dewatering well with a deep foundation, which comprises a plugging sleeve, a plugging cover base, a plugging cover, an external water stopping ring, an inner water stopping ring and a water stopping plate, wherein the plugging cover base is a ring base connected and vertically fixed with the lower part of the inner wall of the plugging sleeve, more than three bolts are welded on the circumference in equal parts of plugging cover base, the plugging cover is provided with bolt holes relative to the bolts of the plugging cover base, the inner and external water stopping rings are vertically fixed and connected to the inner and outer walls of the plugging sleeve, the water stopping plate and the inner water stopping ring are connected through welding or flange. The device has simple structure, low process cost, convenient use and wide adaptability, and uses unified construction method to replace each plugging process, has rapid plugging, low cost, no construction risk and dangers, avoids the limitless underground water pumping, and protects the environment.

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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