Synchronous water injection and humidification device for lime-soil compaction pile

Abstract

The invention belongs to the technical field of civil engineering foundation treatment equipment, in particular to a synchronous water injection and humidification device for a lime-soil compaction pile. The device solves the technical problem in the background technology. The device comprises a top section pile pipe, a bottom pile tip and a plurality of standard section pile pipes, wherein the top section pile pipe, the standard section pile pipes and the bottom pile tip are coaxially arranged from top to bottom and are sequentially connected, water injection pipes are arranged on a central axis of the top section pile pipe and central axes of the standard section pile pipes, the bottom pile tip comprises a cylindrical upper part and an inverted cone-shaped tip end, a water injection pipeis arranged on a central axis of the bottom pile tip, a plurality of water outlet holes are uniformly distributed in the circumferential direction of the side wall of the inverted cone-shaped tip end, and the water outlet holes communicate with the bottom end of the water injection pipe in the bottom pile tip. According to the device, synchronous water injection can be achieved in a punching process, too-little water injection does not occur, water resources are not wasted, the effect of uniform humidification of a surface layer and a deep layer of a pile hole is achieved, a construction period can be shortened, and the pore-forming extrusion effect is good, and the breakthrough of processing depth doubling is achieved.

Description

technical field [0001] The invention relates to the technical field of civil engineering foundation treatment equipment, in particular to a synchronous water injection and humidification device for lime-soil compaction piles. Background technique [0002] Collapsible loess is a kind of unsaturated under-pressure dense soil. Under the natural humidity, its compressibility is low and its strength is high. of collapsible deformation. Therefore, such soil must be processed before it can be used as the foundation of the building. [0003] Lime-soil compaction pile is an effective and convenient method to deal with collapsible loess foundation. Its principle is to use the lateral extrusion action to compact the soil between the piles when the pile hole is formed, and then tamp and fill the pile hole with plain soil or lime soil in layers. The treatment depth of traditional lime-soil compaction piles is generally 5-15 meters in thickness, but it is already a process with a relat...

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Problems solved by technology

It cannot meet the short construction period requirements of the current large-scale engineering construction for the return on investment period

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