A kind of overfilling detection device

Abstract

The invention belongs to the field of cast-in-situ pile detection equipment, and in particular relates to a force-electricity complementary detection probe and an overfill detection device and method. The detection probe includes a casing, and a detection circuit board and the detection circuit The electrode ring and the torque motor electrically connected to the board, the detection circuit board is provided with a resistivity measurement module and a torque measurement module; the end of the output shaft of the torque motor is fixed with a rotating baffle, and the rotating baffle is located at the Outside the casing, the torque motor provides different torques for the rotating baffles with different rotation resistances, and the torque measurement module records the torque information provided by the torque motor in real time. The present invention combines the electrical parameter method measurement with the force parameter method measurement, the advantages of the electrical parameter method and the force parameter method are complementary, and the two measurement methods are mutually verified, which can more effectively monitor the concrete pouring state and finely control the superfill height.

Description

Technical field [0001] The present invention relates to the field of infusion pile detection, and more particularly to a force-to-electrical complementary detection probe and superfrutive detection apparatus and method. Background technique [0002] Bored piles have become one of the main basic forms of buildings. It uses water to be placed in water, in order to ensure the quality of the pile, it often requires a high height of the concrete superfoil, and after excavation in the foundation pit Chiseling the superfield portion. Due to mud water in the hole during perfusion, due to mud water, a part of concrete is dissolved in water to form concrete floating, and the other part is not dissolved in water, which is aggregate concrete, and aggregate concrete constantly sinks, and concrete floating. The mud water layer continues to rise and discharge through the drainage hole. The existence of floating and mud water layers make it difficult to accurately know where the concrete surface...

AI Technical Summary

Problems solved by technology

Chinese Patent No. CN201410833047.6 discloses a device and method for monitoring the concrete interface of bored cast-in-situ piles, which uses the difference in electrical impedance of water, mud and concrete to detect whether the concrete pouring has reached the height by measuring the difference in electrical properties; but during the pouring process, Because the muddy water and concrete are turning up and down, the fluid medium in the hole changes greatly, and the electrical parameter value changes sharply and is not easy to stabilize, which brings a certain error to the measurement; and the electrical parameters of the concrete laitance and the concrete with aggregate are relatively close, and often Creates a situation where it is difficult to distinguish between concrete laitance and aggregate concrete

However, due to the laitance layer on the top of the bored pile, the anisotropy of the laitance layer and the concrete layer particles, the serious phenomenon of ultrasonic scattering and diffusion, it is easy to cause defects such as low accuracy, poor reliability and poor stability of the detection results.

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