Ultrahigh-speed debris flow impact simulation platform and test method under weak Coriolis effect

A technology of Coriolis effect and simulation platform, which is applied in the direction of impact test, fluid dynamics test, machine/structural component test, etc. It can solve the problems of difficult soil acceleration, small model scale, and difficulty in achieving high speed of debris flow.

A technology of Coriolis effect and simulation platform, which is applied in the direction of impact test, fluid dynamics test, machine/structural component test, etc. It can solve the problems of difficult soil acceleration, small model scale, and difficulty in achieving high speed of debris flow.

CN114486145AActive Publication Date: 2022-05-13TONGJI UNIV
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  • Ultrahigh-speed debris flow impact simulation platform and test method under weak Coriolis effect
  • Ultrahigh-speed debris flow impact simulation platform and test method under weak Coriolis effect
  • Ultrahigh-speed debris flow impact simulation platform and test method under weak Coriolis effect

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0111] figure 1 A schematic diagram of the test platform is given for the simulation test of ultra-high-speed landslide debris flow impact under weak centrifugal Coriolis conditions. The Coriolis acceleration is mainly due to the fact that the simulated physical process has a velocity component perpendicular to the direction of the centrifugal rotation angular velocity vector. Therefore, setting the model as the flow direction and 1g gravity direction (parallel to the rotation axis), which is recorded as the dominant direction, can eliminate the Coriolis acceleration. Due to the deflection of the particle velocity during the impact of the debris flow, it is difficult to ensure that the movement direction of all particles is strictly parallel to the dominant direction, and some particles will be subject to a certain degree of Coriolis acceleration, but under the impact, the particle The velocity attenuation is extremely fast, and the Coriolis acceleration is related to the vel...

Embodiment 2

[0118] The implementation method of the present invention includes two aspects: a device performance calibration process and an impact test simulation process.

[0119] The device performance calibration aims to draw the acceleration-deceleration performance curve of the debris flow impact simulation mechanism, define the basic operating parameters of the device, and provide technical indicators and references for the standardized operation of the invented device.

[0120] The impact test simulation is the implementation purpose of the present invention, which aims to study the impact damage effect of the landslide debris flow on the retaining structure, and provide a basis for the design of the engineering retaining structure.

[0121] Step 1 Device Performance Calibration Procedure

[0122] The specific implementation process is as follows:

[0123] 1.1 press Figure 2-8 As shown in the schematic diagram, the components are assembled, and all components are in the initial ...

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Abstract

The invention provides an ultra-high-speed debris flow impact simulation platform and method under a weak Coriolis effect. The ultra-high-speed debris flow impact simulation platform used under the weak Coriolis effect comprises a centrifugal machine, a test platform and a debris flow impact simulation mechanism. The debris flow impact simulation mechanism comprises an air box set, an electromagnetic valve module, a sliding groove-blocking device, a magnetic floating device, a soil body material box device, a soil body material box pneumatic acceleration-deceleration device and a gate opening and closing control device. The method comprises the steps of device performance calibration and impact test simulation. The Coriolis effect problem in the traditional centrifugal simulation high-speed geological process is well solved, support can be provided for research of related geological disasters on the structure impact effect, comparison can be provided for simulation of related problems of the ultra-high-speed geological process in a more complex centrifugal-Coriolis composite environment, and the method is used for evaluating the influence of the Coriolis effect.

Description

technical field [0001] The invention relates to a platform and method for impact simulation of ultra-high-speed debris flow under weak Coriolis effect, which can be applied to a physical simulation platform for geological disasters. Background technique [0002] Landslide debris flow is a geological disaster with ultra-high velocity (up to tens of meters per second) and ultra-long movement distance, which causes serious impact damage to engineering structures along the way, resulting in huge economic losses and casualties. The impact failure mechanism of ultra-high-speed debris flow in landslides is an important scientific issue in the field of engineering geology. One of the severe challenges in experimental research is the lack of physical simulation tests that can reflect the ultra-high-speed characteristics of landslide debris flow and the deformation characteristics of rock and soil materials. device. Geotechnical centrifuges provide possible ideas for solving the abov...

Claims

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Application Information

Patent Timeline
13 May 2022
Publication
CN114486145A
IPC
G01M7/08; G01M10/00
CPC
G01M7/08; G01M10/00; Y02T90/00
Inventors
张贝; 黄雨