Adjustable multifunctional high-speed debris flow friction test device and test method thereof

Abstract

The invention discloses an adjustable multifunctional high-speed debris flow friction test device and a test method thereof. The adjustable multifunctional high-speed debris flow friction test device is characterized in that the bottom of a vertical steel plate is hinged with the ground; the upper part of the steel plate is hinged with the top end of a telescopic connecting rod; a motor, a speed reducer, a torque sensor and a bearing are sequentially fixed from bottom to top of the working surface of the steel plate; a motor shaft is connected with the lower end of a spindle through a speed reducer and the torque sensor; the upper end of the spindle is connected with the lower part of a bracket through bearings; a disc is fixed at the upper part of the bracket; two square, bottomless, coverless and transparent model boxes are symmetrically arranged at the upper part of the disc; four corners at the tops of the model boxes are hinged with the lower ends of upper connecting rods; upper ends of upper connecting rods penetrate through a transverse through groove in a gantry transverse beam upwards; pressure bearing steel covers are embedded inside the two model boxes; jacks are fixed on the gantry transverse beam; top rods of the jacks are aligned to the middle parts of the pressure bearing steel covers; high-speed cameras are mounted on side surfaces of the model boxes through camera connecting rods.

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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