Prefabricated retaining wall and pile hole excavation method

Abstract

The invention discloses a prefabricated retaining wall and a pile hole excavation method. The excavation method comprises the steps that first, guide-hole construction is carried out by using a machinery in an excavation area of a rectangular hole, after the internal opening is carried out, a soil body at the edges and corners of the rectangular hole is disturbed, internal stress is released, thedifficulty of subsequent excavation is greatly reduced, moreover, with the continuous increase of gravity of the prefabricated retaining wall, the settlement process of the prefabricated retaining wall is easier, and construction efficiency is conducive to be improved; and according to the excavation method, excavation of the rectangular hole can be carried out effectively, construction safety isimproved, construction difficulty is reduced, the requirement for forming a large-size rectangular hole is met, at the same time, prefabricated retaining wall structure is effectively installed to avoid the risk of hole collapse, hole digging and the retaining wall can be completed simultaneously, the construction period is conducive to be shortened, energy saving and environment production are achieved, the quality hidden danger of the retaining wall can be avoided effectively, and the excavation method is especially suitable for construction of an anti-slide pile in cold and high altitude areas such as the sichuan-tibet line.

Description

technical field [0001] The invention relates to the technical field of retaining wall construction, in particular to a prefabricated retaining wall and a pile hole excavation method. Background technique [0002] With the development of social economy, large-diameter piles and super-large-diameter piles frequently appear in engineering, and traditional construction techniques are facing great challenges. The cross-section of the pile foundation is generally divided into circular piles and rectangular piles. At present, most circular piles are constructed by mechanical hole forming and mud retaining wall, which realizes fully mechanized construction. For example, rotary drilling and impact drilling are used, but the diameter usually only reaches 2.5m , while rectangular piles (such as anti-slide piles) have a large section size, usually 3m*4m or even larger. In the prior art, most of the holes are formed by manual work, and cast-in-place concrete retaining walls are used for ...

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the disadvantages of the prior art, such as the large rectangular hole section size, which cannot be machined into holes, and the manual digging has high risks, low efficiency, long construction period, and poor molding quality, etc., and provides a prefabricated retaining wall and pile hole excavation method

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