Square hole girdling cutter and method for performing holing construction of deep cutting stab-pile wall by utilizing same

Abstract

The invention discloses a square hole girdling cutter and a method for performing the holing construction of a deep cutting stab-pile wall utilizing the same. The cutter comprises a truss and a square cutter edge thereof; the top of the truss is provided with a pin shaft hole for connecting a drilling rod; and a plurality of cutter bits are welded on the square cutter edge at equal interval. The method comprises the steps of pile position digging, anchoring end construction performed by the cutter, freed end construction and breast board construction. The construction method is simple in operation, fast in construction speed, high in safety factor, economic and reasonable, and capable of improving the degree of mechanization of the construction, and safely, fast and economically finishing the construction in comparison with the traditional construction method under well geological conditions.

Description

technical field [0001] The invention relates to the field of engineering construction, in particular to a construction technique for forming a hole in a cutting pile slab wall and a hole-forming tool. Background technique [0002] The traditional deep cutting pile-slab wall construction uses manual excavation of piles, and after the piles are completed, the earth and rock inside the pile-slab wall are continued to be excavated to the designed subgrade surface. The process is cumbersome and the construction progress is slow. In the case of a large number of pile-slab walls in the deep cutting design of some construction sections, the construction quantity is large and the construction period is long, which affects the construction progress of the entire project. When exploring the use of mechanization to improve the construction of pile-slab walls, because the cross-sectional shape of pile-slab walls is square, and the drill bits of existing rotary drilling rigs are all rou...

AI Technical Summary

Problems solved by technology

[0002] The traditional deep cutting pile-slab wall construction uses manual excavation piles, and then continues to excavate the earth and stone inside the pile-slab wall to the designed subgrade surface after the piles are completed. The process is cumbersome and the construction progress is slow

In the case of a large number of pile-slab walls in the deep cutting design of some construction sections, the construction quantity is large and the construction period is long, which affects the construction progress of the entire project

When exploring the use of mechanization to improve the construction of pile-slab walls, because the cross-sectional shape of the pile-slab wall is square, and the drill bits of the existing rotary drilling rigs are all round, it cannot meet the construction requirements of the pile-slab wall

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