An experimental method and experimental device for debris flow simulation and dynamic parameter acquisition

Abstract

The invention discloses an experiment device for simulating debris flow and acquiring dynamic parameters. The device comprises a rotary drum, a drive device and a support, wherein the drive device is used for driving the rotary drum, the support is used for supporting the rotary drum and the drive device, the rear panel of the rotary drum is provided with a feed inlet, the front panel of the rotary drum is made of transparent materials, and the drive device is a drive wheel driven by a motor. The invention further discloses an experiment method using the device. The device has the advantages that debris materials in the rotary drum rotate in a circulating manner, the length of a slide groove is increased equivalently, the flowing process of the debris flow is allowed to be in an unlimited duration state or a controllable duration state, the movement process of the debris flow is simulated precisely, the flowing state of the debris flow can be visually observed, and a large instrument setting space can be obtained to acquire the debris flow dynamic parameters.

Description

technical field [0001] The invention relates to the technical field of geological research, in particular to an experimental method and experimental device for debris flow simulation and dynamic parameter acquisition. Background technique [0002] A debris flow is a high density fluid mixture of sand, gravel, clay material and water that flows down a slope under the force of gravity. In order to conduct relevant research on debris flow movement, simulation devices are generally used in this field for simulation. The device used in the existing simulation method, the general structure is as follows Figure 1-3 As shown, the chute is made of plexiglass and PVC plastic. The chute includes the front side plate 1 of the chute, the rear side plate of the chute, the bottom panel 3 of the chute and the corner chute assembly 4. figure 1 The debris flow material placement space 6 on the top of the chute is shown, and the bolt F is pulled out to open the gate 5 to simulate the start,...

AI Technical Summary

Problems solved by technology

[0004] (1) Limited by the length of the chute, it is impossible to simulate the high-speed motion state of debris flow migration

[0005] (2) Only a single release of the debris flow can be achieved each time, and the height of the debris flow is roughly fixed. It is impossible to simulate the different movement speeds of the debris flow, and the diversity of the debris flow cannot be explained clearly

[0006] (3) The time of each test is short, and the process from the start, migration, and stagnation of the debris flow is usually completed within 1 to 2 seconds, and there is not enough time to observe and record the movement state of the debris flow during the test Interaction with detritus particles

[0007] (4) It is difficult to monitor the motion state. Due to the short test process, effective test data cannot be monitored, such as the velocity of the debris flow, the force between the debris flow and the substrate, and the interaction of particles inside the debris flow, etc.

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