Grouting device, equipment and method for sounding pipe in water-rich stratum of cast-in-place pile

Abstract

The invention discloses a grouting device, equipment and method for a sounding pipe in a water-rich stratum of a cast-in-place pile. The grouting device includes at least one layer of grouting holes and at least one grouting pipe connected coaxially; any layer of grouting holes include a plurality of grouting holes which are formed by penetrating through the pipe wall of the sounding pipe in the circumferential direction of the sounding pipe, and the grouting holes of each layer are arranged at intervals in the axial direction of the sounding pipe; the outer diameter of the grouting pipes is smaller than the inner diameter of the sounding pipe, communication assemblies are arranged at the positions, corresponding to the positions of each layer of grouting holes, on the grouting pipes, andany communication assembly includes a main pipe coaxially connected with the grouting pipes and a plurality of branch pipes which radially communicate with the main pipe; and when the grouting pipes are lowered into position in the sounding pipe, each of the branch pipes correspondingly communicates with the grouting holes of the corresponding layer respectively, and the bottom end of the main pipe of the bottommost communication assembly seals the grouting pipes. The grouting device can be arranged in the sounding pipe by verifying the location of groundwater flow scouring, grouting liquid issprayed to form a protective layer, a water flowing channel is sealed, and the problem that the water-rich stratum is harmful to a cast-in-situ bored pile can be solved.

Description

technical field [0001] The invention relates to the field of building construction, in particular to an acoustic measuring tube grouting device, equipment and grouting method for cast-in-situ piles in water-rich strata. Background technique [0002] Cast-in-place piles are widely used in industrial and civil construction, bridges, and municipal engineering. In water-rich strata, groundwater flows out from hole walls or cracks to scour pile foundations. Since the water usually contains other inclusions, under the action of water flow, pile foundations often Subject to abrasive damage such as friction, cutting and scour. As a result, the pile foundation is empty, not dense, and even the pile is broken, which seriously affects the quality of the pile foundation. For pile foundations that may be affected by such abrasion, steel casings are often provided within a certain length outside the pile foundation for protection. [0003] Although the above method can slow down the abr...

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Problems solved by technology

[0003] Although the above method can reduce the degree of abrasion of the pile foundation, there is a problem of durability in the steel structure, and the cost of the steel casing is relatively high. Up to now, there is no better method

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