A kind of self-extracting soil-type double-layer full casing pipe and its construction method for forming holes in inclined piles

Abstract

The invention discloses a self-soil-fetching type double-layer all casing for inclined pile hole forming and a construction method of the self-soil-fetching type double-layer all casing. The self-soil-fetching type double-layer all casing comprises all casing all slewing drilling machine tool equipment, an angle tool and a self-soil-fetching type double-layer all casing body. The all casing all slewing drilling machine tool equipment provides power for inclined filling pile hole forming, the angle tool achieves inclined bearing of an all casing all slewing drilling machine, the self-soil-fetching type double-layer all casing body comprises a soil cutting type all casing outer barrel and a soil fetching type all casing inner barrel, the soil cutting type all casing outer barrel achieves cutting of soil mass and drives the soil fetching type all casing inner barrel to undercut the soil mass in a drum, based on a rotary excavating drill bit, in combination with an all casing thought and with the help of power of pressing an outer all casing by the all slewing drilling machine, the soil fetching type all casing inner barrel is driven by the outer casing to undercut the soil mass in thecasing, and soil is taken out of the casing. By means of innovation of auxiliary equipment and process improvement, construction machinery is adopted as few as possible, inclined pile construction can be conveniently achieved, meanwhile, mud wall protection is not needed during hole forming, and environmental friendliness is achieved.

Description

technical field [0001] The invention belongs to the technical field of inclined pile construction, and in particular relates to a self-extracting soil-type double-layer full casing for forming holes in inclined piles and a construction method thereof. Background technique [0002] In pile foundation engineering, especially in foundation pit support engineering, inclined piles have better mechanical characteristics than conventional vertical piles. For example, in foundation pit support, regardless of single-row piles or double-row piles, when there are inclined piles, because they can provide part of the horizontal force, the effect of force and support is better, and the number of inner support channels can be reduced and eliminated. , to achieve green construction. [0003] At present, the construction of inclined piles is a difficult problem in the engineering field. Conventional rotary drilling rigs, long auger drilling rigs, and rotary drilling rigs are all based on ve...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the technical defect of difficult construction of inclined piles in foundation pit support engineering in the prior art, the present invention provides a self-extracting soil-type double-layer full casing for forming holes in inclined piles and its construction method. Through the innovation of auxiliary equipment and the With the improvement of technology and the use of as few construction machines as possible, the construction of inclined piles can be realized, and at the same time, no mud wall is required for hole formation, which is green and environmentally friendly, and solves the above technical problems

Images