Automatic sampling device and method for cement-soil mixing pile slurry

Abstract

The invention discloses an automatic sampling device and method for cement-soil mixing pile slurry. The automatic sampling device comprises a drill rod and a slurry cabin, wherein the slurry cabin isfixedly arranged on the drill rod, a liquid inlet is formed in the lower end of the slurry cabin, a valve is arranged at the liquid inlet, the liquid inlet faces the forward rotation direction of thedrill rod, a cover plate is arranged at the upper end of the slurry cabin, the cover plate is in sliding connection with the slurry cabin, the cover plate slides in the reverse rotation direction, theforward rotation direction is the drilling rotation direction of the drill rod, and the reverse rotation direction is the lifting rotation direction of the drill rod. According to the invention, automatic sampling of the slurry is realized, the slurry sampling work is simplified, the sampling efficiency is improved, and after the sampling work is completed, the device is simply cleaned and can berecycled, the manufacturing cost is low, the maintenance is simple, the device is especially suitable for severe environments, and the failure rate is low.

Description

technical field [0001] The invention relates to the technical field of construction engineering, in particular to an automatic sampling device and method for cement-soil mixing pile slurry. Background technique [0002] When constructing buildings (structures) on soil layers such as fill, silt, silty soil, cohesive soil, silt, sandy soil, saturated loess, etc., if the bearing layer of the natural foundation cannot meet the horizontal and vertical bearing requirements When it is necessary to take certain replacement and reinforcement measures for the soil layer, the most widely used is the cement-soil mixing pile. [0003] The cement-soil mixing pile uses cement as the curing agent, and through a special mixing machine, the soft soil and the curing agent are forced to mix deep in the foundation, and a series of physical and chemical reactions between the curing agent and the soft soil are used to make the soft soil hard. Form a high-quality foundation with integrity, water s...

AI Technical Summary

Problems solved by technology

This sampling method manually controls the operation of opening and closing the cabin, which is clumsy and inconvenient to operate; when the sampling depth is different, it needs to measure and calculate the length of the probe rod multiple times; when the sampling depth is deep, it is prone to mechanical failure, and it is necessary to make a longer probe rod or rope

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