Compaction threaded pile forming drill lifting speed determining method, device, equipment and system

Abstract

The invention discloses a compaction threaded pile forming drill lifting speed determining method. The method comprises the steps of obtaining the pressure difference of pump concrete in the current period, the first period before the current period and the second period before the current period, and obtaining the actually-measured pressure value of the pump concrete in the first period before the current period is obtained; according to the pressure difference and the actually-measured pressure value, determining the current set pressure value during concrete pumping in the current period; and inputting the current set pressure value to the preset pile-forming drill-lifting speed determining model to obtain the current pile-forming drill-lifting speed. The pile-forming and drill-liftingspeed is obtained according to related data collected in the early-stage pile-forming process. When geological conditions in a pile hole are changed, the pile-forming and drill-lifting speed can be correspondingly adjusted. The problems of pile breaking, hole shrinkage, concrete bleeding segregation, conveying pipeline blocking and the like caused by the too high or too low drill-lifting speed areeffectively solved. In addition, the invention further provides a device, equipment and a system with the advantages.

Description

technical field [0001] The present application relates to the technical field of pile foundation engineering, in particular to a method, device, equipment and system for determining the drilling speed of compacted threaded piles. Background technique [0002] The compacted threaded pile is a compacted concrete pile structure, which can compact the soil and form a pile hole in the soil. When the compaction drilling rig is lifted up, the concrete is pumped into the pile hole to the top of the pile hole in time. Elevation to form piles. The amount of concrete pumped by the concrete delivery pump into the core pipe of the drill pipe should be dynamically balanced with the drilling speed to avoid the blockage of the pipe or the core pipe of the drill pipe due to bleeding and segregation of the concrete, faults and hollowing in the concrete pouring . [0003] At present, the concrete pumping volume and the drilling speed tend to be stable through experienced workers maintaining ...

AI Technical Summary

Problems solved by technology

[0003] At present, the concrete pumping volume and the drilling speed tend to be stable through experienced workers maintaining a constant drilling speed based on experience, but there will be the following problems: First, the drilling speed is caused by the workers' inability to know the situation in the pile hole. The theoretical optimal value cannot be reached. Second, affected by the geological conditions of different sites and the proportion of concrete, it is difficult for workers to ensure that the drilling speed and concrete pumping volume are optimally matched, especially in some special geological sites. The wall of the pile hole will collapse during the reverse drilling process. If the drilling speed is kept constant, the collapsed part cannot be filled, resulting in insufficient concrete pouring and broken piles

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