Method, device, equipment and system for determining the drilling speed of compacted threaded piles

Abstract

The present application discloses a method for determining the drilling speed of compacted threaded piles, which includes: respectively obtaining the pressure difference of the pumped concrete in the current cycle, the first cycle before the current cycle, and the second cycle before the current cycle, And obtain the measured pressure value when pumping concrete in the first cycle before; determine the current set pressure value when pumping concrete in the current cycle according to the pressure difference and the measured pressure value; input the current set pressure value to the preset pile lift The drilling speed determination model is used to obtain the current drilling speed for pile formation. The pile-forming and drilling-lifting speed in this application is obtained according to the relevant data collected in the previous pile-forming process. When the geological conditions inside the pile hole change, the pile-forming and drilling-lifting speed can be adjusted accordingly, effectively avoiding the Problems such as pile breakage, diameter shrinkage, concrete bleeding and segregation, and pipeline blockage caused by too fast or too slow speed. In addition, the present application also provides a device, equipment and system with the above 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 ...

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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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