Square anti-slide pile hole forming method and square drill bit for hole forming

Abstract

The invention relates to a square anti-slide pile hole forming method and a square drill bit for hole forming, which comprises the following steps: an outer contour of a lock opening is excavated manually, a template is arranged on the inner side, and the lock opening is formed by pouring the reinforced concrete; a protecting wall is arranged downwards on the bottom surface of the lock opening, and the protection wall is formed by pouring the reinforced concrete; the circular drill bit of the rotary drilling rig is sequentially connected to drill at least one row of circular guide holes alongthe length direction of the cross section of the square anti-slide pile hole, the circular guide holes of each row are also connected, and the side walls of the square anti-slide pile holes are tangent to the edges of the adjacent circular guide holes; the bit is replaced with the square drill bit, the gravity of the rotary drilling rig and the downward pressure of the power head of the rotary drilling rig is used to make the square drill bit cut the residual soil downwards along the contour line of the square anti-slide pile hole until the design requirement is met. The hole forming rectangular anti-slide pile of the rotary drilling rig is applied, so that the hole forming efficiency of the anti-slide pile can be improved, the safety risk can be reduced, and the hole forming quality can be ensured.

Description

technical field [0001] The invention relates to the field of building construction, in particular to a hole-forming method for square anti-slide piles and a square drill bit for hole-forming. Background technique [0002] Rotary drilling rig is a kind of pile foundation construction equipment used for hole-forming operations. With the vigorous development of domestic foundation engineering in recent years, rotary drilling rigs have been widely used due to their advantages of high efficiency, speed, environmental protection, and high hole-forming quality. . The rotary drilling rig mainly uses the power head to drive the drill pipe, and transmits the driving force and pressure of the power head to the drill bit through the drill pipe to realize cutting and drilling of the formation. Expressway square anti-slide piles are generally set on the excavation slope platform or at the foot of the fill slope to strengthen the sliding surface of the slope or shrink the slope foot. Sinc...

AI Technical Summary

Problems solved by technology

The use of artificial holed square anti-slide piles has a long construction period and great potential safety hazards, which is not conducive to rapid anti-slide reinforcement after excavation of the slope

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