Bored concrete pile underwater concrete perfusion pipe pressure type dredging device and method

Abstract

The invention in particular discloses a bored concrete pile underwater concrete perfusion pipe pressure type dredging device and a bored concrete pile underwater concrete perfusion pipe pressure type dredging method, which solve the problem of pile breaking due to hole collapse during concrete bored concrete pile underwater casting. The bored concrete pile underwater concrete perfusion pipe pressure type dredging device comprises a pressure housing which is sealed at the upper end of a pipe, wherein the pressure housing is provided with an air inlet valve, an air outlet valve and an air pressure gauge; and the air inlet valve is connected with an air supply pipe. The device has rational and reliable structural design; the problem of pile breaking due to the hole collapse during the concrete bored concrete pile underwater casting is solved; 10 to 15 atmospheric pressures can be provided by pressurizing in the pipe through a dredging tube, so that the underwater concrete perfusion pipe is quickly dredged and the economic loss caused by probable pile breaking is timely avoided; and the device has the advantages of simple structure, convenience of operation and low cost.

Description

technical field [0001] The invention relates to a technique for dredging an underwater concrete pouring conduit of a cast-in-place pile, in particular to a pressure-type dredger and a method for the underwater concrete pouring conduit of a pouring pile. Background technique [0002] The underwater pouring of concrete pouring piles is a relatively traditional process. The pressure difference between the inside and outside of the conduit is used to promote the concrete in the conduit to quickly enter a certain depth below the underwater concrete surface, and continuously push the original underwater concrete surface up to the orifice. However, in this traditional process, the concrete pouring is often interrupted due to the blockage of the conduit, resulting in broken piles (the concrete is polluted by impurities such as mud). The reasons for the blockage of the concrete conduit are mainly as follows: the concrete slump is too small (too dry), the sliding resistance is large, ...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of broken piles caused by hole collapse during the underwater pouring of concrete pouring piles, the present invention provides a pressure dredger and method for underwater concrete pouring conduits of pouring piles

Images