Three-axis long auger and construction method of occlusal pile

Abstract

The invention discloses a tri-axial long spiral drilling machine and an occlusive pile construction method which is achieved on the basis of the tri-axial long spiral drilling machine. The tri-axial long spiral drilling machine comprises a rack. A guiding mechanism is installed on the rack and provided with a drilling mechanism. The drilling mechanism can be driven by a transmission mechanism to make vertically perpendicular movement in the guiding mechanism. The drilling mechanism comprises three laterally-arranged hollow drilling rods which are installed under power head, and the power head drives the three drilling rods to positively rotate and negatively rotate in a synchronous mode. Top openings of the drilling rods are connected with a concrete pouring device, and bottom openings of the drilling rods are provided with drilling bits which are opened when the drilling rods positively rotate and closed when the drilling rods negatively rotate. Rod bodies of the drilling rods are provided with spiral blades, and the spiral blades on each two adjacent drilling rods are arranged in a staggered and embedded-fit mode so as to enable the three drilling rods to be able to drill out of three mutually-occlusive pile holes at a time. In occlusive piles obtained through tri-axial long spiral drilling machine construction, occlusion between the adjacent piles is natural and sufficient, holes are not connected between the adjacent piles, and the construction quality is effectively ensured.

Description

technical field [0001] The invention relates to a three-axis long auger drilling rig and a construction method for an occlusal pile realized based on the three-axis long auger rig, belonging to the technical field of occlusal pile construction. Background technique [0002] In the foundation pit supporting pile foundation engineering, the occlusal pile is more and more widely used as a structure that can not only stop water but also play a supporting role. However, the current construction methods such as rotary digging occlusal piles, full-sleeve occlusal piles, and long spiral occlusal piles have the following problems: [0003] On the one hand, the above-mentioned construction methods all have a common problem, that is, the adjacent pile holes are not sufficiently occluded, which often leads to water leakage at the insufficient occluded parts. [0004] On the other hand, the above-mentioned mechanical construction method usually adopts the method of interval construction...

AI Technical Summary

Problems solved by technology

However, since the A piles are first constructed at intervals, and the distance between two adjacent A piles is relatively close, the phenomenon of stringing holes is likely to occur when the A piles are constructed again.

In addition, since pile A has been constructed at intervals, the concrete inside pile A has solidified. Therefore, when pile B is constructed later, it is often difficult for pile B to occlude and move pile A, making the construction difficult to proceed smoothly.

Images