An adjustable multifunctional high-speed debris flow friction test device and its test method

Abstract

An adjustable and multifunctional debris flow movement crushing test device and its test method, the device is composed of: the bottom of the vertical steel plate is hinged to the ground, the upper part of the steel plate is hinged to the top of the telescopic connecting rod, and the working surface of the steel plate is hinged to the ground. The motor, reducer, torque sensor and bearing are fixed in order from bottom to top. The motor shaft is connected to the lower end of the main shaft through the reducer and the torque sensor. The upper end of the main shaft is connected to the lower part of the bracket through the bearing. The upper part of the bracket fixes the disc; Place two square, bottomless, and transparent model boxes symmetrically; the four corners on the top of the model box are hinged to the lower end of the upper link, and the upper end of the upper link passes upward through the transverse channel of the gantry beam; And the inside of the two model boxes is embedded with a pressure-bearing steel cover; a jack is fixed on the beam of the gantry frame, and the jack rod is aligned with the middle of the pressure-bearing steel cover; a high-speed camera is installed on the side of the model box through a camera connecting rod.

Description

technical field [0001] The invention relates to an adjustable multifunctional high-speed debris flow friction test device and a test method thereof. Background technique [0002] High-speed remote landslide debris flow (high-speed debris flow) is a sudden geological disaster, which often has the characteristics of large volume, fast speed, long sliding distance and strong damage. Due to the complexity of the high-speed remote debris flow process and the limitations of existing observation techniques, it is difficult to observe the internal changes of the actual debris flow and monitor the friction data of the sliding surface. This makes the physical model experiment widely used in the study of the motion mechanism of high-speed remote debris flow. However, most of the existing test devices are simple and variable-angle chute, and the particulate matter can only slide down from a static state, which cannot reach the high-speed movement in the actual situation, let alone obse...

AI Technical Summary

Problems solved by technology

However, most of the existing test devices are simple and variable-angle chute, and the particulate matter can only slide down from a static state, which cannot reach the high-speed movement in the actual situation, let alone observe the fragmentation of debris flow particles caused by bottom friction during high-speed movement. Variation and Collision Separation

In short, the current test device can only reveal the relationship between the movement speed of the debris flow and the accumulation form, but it cannot reveal the frictional breakage and particle collision and separation phenomena during the movement of the high-speed remote debris flow, let alone measure the different Changes in the coefficient of dynamic friction of the sliding surface under normal pressure and different speeds; thus, it cannot provide accurate and reliable test basis for the prevention and control of debris flow disasters

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