Debris flow impact resistance simulation test device

Abstract

The utility model discloses a debris flow impact resistance simulation test device. The device comprises a material source stirring system, a model box, a traffic engineering structure and a data acquisition system, the material source stirring system is arranged above the model box, the top of the model box is open, a steel wire for three-coordinate point marking, a sliding rail, a ruler and a marked line are arranged in the model box, the traffic engineering structure is arranged at a debris flow flowing direction simulating terminal in the model box, and the data acquisition system is connected to the traffic engineering structure; the flow path before the debris flow impacts the traffic engineering structure is restored, the whole test process is high in restoration degree, the impact effect of the debris flow under complex working conditions can be truly reflected, and the test result is accurate.

Description

Technical Field

[0001] This utility model belongs to the field of debris flow prevention and control technology, specifically a debris flow impact resistance simulation test device. Background Technology

[0002] Debris flows are extremely destructive geological hazards that often pose a significant threat to transportation engineering structures, especially critical components such as bridge piers and tunnel entrances. To study and improve the resistance of structures to debris flow impacts, laboratory testing methods have become an important tool for researching debris flow impact mechanics due to their controllability and cost-effectiveness.

[0003] While existing indoor testing devices have solved the simulation problem of debris flow impact to some extent, they have significant limitations in realistically reproducing the debris flow impact process and cannot fully reflect the complex working conditions in actual engineering. Traditional indoor debris flow tests usually use small inclined channels and conduct tests based on idealized debris flow terrain conditions, and use artificially manufactured debris flow models to impact simplified structural models. Although this type of test is simple to operate and has a certain degree of controllability, it has significant shortcomings in simulating the dynamic characteristics of debris flows. The testing device cannot simulate the impact of debris flow on actual engineering terrain, resulting in simulation effects that are limited to standardized conditions and cannot realistically reflect the impact effect of debris flows under complex working conditions, causing the test results to deviate from the actual working conditions. Utility Model Content

[0004] The purpose of this invention is to provide a simulated test device for the impact performance of debris flow, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a debris flow impact simulation test device, comprising a material mixing system, a model box, a traffic engineering structure, and a data acquisition system; the model box is fixedly installed below the discharge port of the material mixing system, and the top of the model box is open; two slide rails are symmetrically arranged inside the model box along the simulated debris flow direction; multiple manually bendable steel wires are horizontally arranged between the slide rails, and one end of each steel wire is fixedly connected to the bottom of the model box; a scale is vertically installed on each slide rail, and a marking line connects the scales on two slide rails; graduation lines are provided on the slide rails, scales, and marking lines; the traffic engineering structure is fixedly connected inside the model box by clamps and is located at the end of the simulated debris flow direction; the data acquisition system includes sensors, a dynamic data acquisition device, and a high-precision imaging device; the sensors and the dynamic data acquisition device are fixedly connected to the traffic engineering structure, and the high-precision imaging device is fixedly installed on the outside of the model box for recording the debris flow impact simulation experiment process.

[0006] Furthermore, the material mixing system includes a mixing container, multiple material bins, mixing blades, and a motor; the multiple material bins are fixedly connected to the outer wall of the mixing container, and each material bin is provided with a channel communicating with the interior of the mixing container; the mixing blades are rotatably connected to the interior of the mixing container, and the rotation shaft of the mixing blades is connected to the rotation shaft of the motor.

[0007] Furthermore, an electric sliding valve is provided at the outlet of the channel.

[0008] Furthermore, the outlet of the material mixing system is connected by a hinge to a baffle for closing the outlet.

[0009] Furthermore, a waste outlet is provided at the end of the debris flow direction on the model box, and a waste collection pool is provided below the waste outlet, with a filter screen installed inside the waste collection pool.

[0010] Setting up a waste outlet facilitates the handling of simulated debris flows after the experiment.

[0011] Preferably, a gravity wall is vertically arranged on the outside of the model box, the material source mixing system is fixedly connected to the top of the gravity wall, and the discharge port is suspended on the gravity wall.

[0012] Furthermore, a telescopic screw is fixedly connected below the baffle.

[0013] The telescopic screw is designed to facilitate adjustment of the baffle opening angle, thereby controlling the initial flow angle of the simulated debris flow.

[0014] Furthermore, a ladder is fixedly installed on the side wall of the gravity wall.

[0015] Furthermore, the clamp includes two clamping plates connected by screws and nuts. A permanent magnet is fixedly installed on the outer side of the clamping plates, and magnetic strips are provided on both sides of the model box. The clamping plates are magnetically fixed to the inside of the model box by the permanent magnet and the magnetic strips.

[0016] Using magnetic materials to fix traffic engineering structures allows for flexible and convenient adjustments to their positions.

[0017] Furthermore, the model box is made of transparent material.

[0018] Using transparent materials facilitates observation and recording of the experimental process.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] This invention reconstructs the flow path of a debris flow before it impacts a traffic engineering structure through on-site measurement and a backtracking algorithm. After scaling down, the spatial coordinates of the terrain dimensions are marked inside the model box. During marking, horizontal coordinate points are determined by marking lines, and steel wires at corresponding positions are selected and bent up. Longitudinal and vertical coordinate points are determined by the scale lines on the slide rail and ruler. Then, the terrain coordinates are marked on the steel wire by bending it and using a marker. The debris flow path is then reconstructed by manually filling in the marked coordinate points. The entire experimental process has a high degree of reconstruction and can truly reflect the impact effect of debris flows under complex working conditions, ensuring the accuracy of the experimental results. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the debris flow impact simulation test device provided in this embodiment of the utility model;

[0022] Figure 2 This is a schematic diagram of the material source stirring system provided in an embodiment of the present invention;

[0023] Figure 3 This is a top view of the slide rail and steel wire provided in this embodiment of the utility model;

[0024] Figure 4 This is a schematic diagram of the ruler and marking structure provided in an embodiment of the present utility model;

[0025] Figure 5 This is a schematic diagram of the clamp structure provided in an embodiment of the present utility model;

[0026] In the diagram, 1-Material mixing system, 2-Model box, 3-Traffic engineering structure, 4-Gravity wall, 5-Clamping fixture, 6-Waste collection pool, 11-Mixing container, 12-Material bin, 13-Mixing blade, 14-Motor, 15-Baffle, 16-Telescopic screw, 21-Slide rail, 22-Steel wire, 23-Scale, 24-Marking line, 25-Graduation line, 41-Ladder, 51-Clamping plate, 52-Screw, 53-Nut, 54-Permanent magnet. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figures 1-5This utility model provides a technical solution: a simulated test device for the impact performance of debris flow, including a material mixing system 1, a model box 2, a traffic engineering structure and a data acquisition system. A gravity wall 4 is vertically arranged on the outside of the model box. The material mixing system 1 is fixedly connected to the top of the gravity wall 4, and ladders 41 are provided on both sides of the gravity wall 4 to facilitate manual inspection of the material mixing system 1.

[0029] The material mixing system 1 includes a mixing container 11, four material bins 12, mixing blades 13, and a motor 14. The four material bins 12 are fixedly connected to the outer wall of the mixing container 11 around its circumference, and each material bin 12 is provided with a channel communicating with the interior of the mixing container 11. An electric sliding valve is provided at the outlet of the channel. The mixing blades 13 are rotatably connected to the interior of the mixing container 11, and the rotation shaft of the mixing blades 13 is connected to the rotation shaft of the motor 14. A discharge port is provided below the mixing container 11. The discharge port is suspended from the gravity wall, and a baffle 15 for closing the discharge port is connected by a hinge at the discharge port. A sealing strip is provided on the baffle 15 to prevent material leakage. A telescopic screw 16 for controlling the opening angle of the baffle 15 is provided below the baffle 15, and a pin is provided at the front end of the baffle 15 to be inserted and fixed to the mixing container 11.

[0030] Model box 2 is made of transparent material and is fixedly set below the discharge port. The top of model box 2 is open. Inside model box 2, two slide rails 21 are symmetrically arranged along the simulated mudslide flow direction. Multiple manually bendable steel wires 22 are horizontally arranged between slide rails 21, and one end of the steel wires 22 is fixedly connected to the bottom of model box 2. Each slide rail 21 is vertically set with a ruler 23, and a line 24 is connected between the rulers 23 on two slide rails 21. Scale lines 25 are set on slide rails 21, rulers 23 and line 24.

[0031] To facilitate the collection of experimental waste, a waste outlet is provided at the end of the debris flow direction on the model box 2 of this utility model, and a waste collection pool 6 is provided below the waste outlet. The waste collection pool 6 is equipped with a filter screen to filter out stones in the simulated debris flow, making it easy to handle.

[0032] The traffic engineering structure 3 is fixedly connected to the inside of the model box 2 by the clamp 5, and the traffic engineering structure 3 is set at the end of the simulated debris flow direction; the clamp 5 includes two clamping plates 51, which are connected by screws 52 and nuts 53. Permanent magnets 54 are fixedly installed on the outside of the clamping plates 51, and magnetic strips are installed on both sides of the model box 2. The clamping plates 51 are magnetically fixedly connected to the inside of the model box 2 by the permanent magnets 54 and the magnetic strips.

[0033] The data acquisition system includes sensors, a dynamic data acquisition device, and a high-precision imaging device. The sensors and the dynamic data acquisition device are fixedly connected to the traffic engineering structure, and the high-precision imaging device is fixedly installed on the outside of the model box to record the debris flow impact simulation experiment process.

[0034] In the specific implementation process, when reconstructing the debris flow terrain, the actual debris flow terrain is first measured. Multiple three-coordinate points on the actual debris flow terrain are selected and scaled down proportionally. The three coordinates of each terrain dimension are marked in the model box 2 sequentially using the steel wire 22. Specifically, the steel wire 22 corresponding to the horizontal coordinate is first lifted so that one end of the steel wire 22 is upright in the model box 2. Then, the scale 23 is moved according to the vertical coordinate, and the height of the marking line 24 on the scale 23 is adjusted to the height corresponding to the vertical coordinate. The intersection of the steel wire 22 and the marking line 24 is marked on the steel wire 22 with a marker. The scale 23 is then moved to mark the next terrain dimension coordinate. Finally, according to the marked points on the steel wire 22, the debris flow terrain is manually filled and compacted in the model box 2 using vibration to create the scaled-down simulated debris flow terrain.

[0035] During the experiment, simulated debris flow materials (stone, sand, soil, and water) were added to four material bins 12 respectively. The amount of materials added was adjusted by the sliding valve to ensure that the specific gravity of the stone, sand, soil, and water met the specific gravity of the stone, sand, soil, and water in the actual debris flow. The motor 14 was started, and the materials were mixed and stirred by the stirring blades 13 to ensure the uniformity of the material mixture.

[0036] Finally, adjust the length of the telescopic screw 16 at the lower end of the baffle 15 so that one end of the telescopic screw 16 abuts against the gravity wall 4, thereby controlling the opening angle of the baffle 16. After the outflow angle of the simulated debris flow meets the test requirements, open the pin on the baffle 16 to release the simulated debris flow in the mixing container 11 and conduct a simulated test of the debris flow impact resistance. Record the test data through the data acquisition system.

[0037] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for simulating the performance of a structure against a mudflow, characterized in that: The utility model provides a mud -rock flow simulation experiment device, including material source stirring system, model case, traffic engineering structure and data acquisition system, model case fixedly arranged below the discharge gate of material source stirring system and model case top is open type, the inside of model case is symmetrically provided with two slide rails along the flowing direction of simulated mud -rock flow, a plurality of steel wires that can be manually bent are arranged horizontally between the slide rails, and one end of the steel wire is fixedly connected to the bottom of the model case, a scale is vertically arranged on each slide rail, and a scale line is connected between the scales on the two slide rails, and the slide rails, scales and scale lines are provided with scale lines, the traffic engineering structure is fixedly connected in the model case through a clamp, and the traffic engineering structure is arranged at the terminal of the simulated mud -rock flow flowing direction, the data acquisition system includes a sensor, a dynamic data collector and a high-precision imaging device, the sensor and the dynamic data collector are fixedly connected on the traffic engineering structure, and the high-precision imaging device is fixedly arranged outside the model case and is used for recording the impact of mud -rock flow on the simulation experiment process.

2. The anti-debris flow impact performance simulation test device according to claim 1, characterized in that: The material source stirring system includes a stirring container, a plurality of material bins, stirring blades and a motor, the plurality of material bins are fixedly connected to the outer wall of the stirring container, a passage is arranged on each material bin and communicates with the inside of the stirring container, the stirring blades are rotatably connected to the inside of the stirring container, and the rotating shaft of the stirring blades is connected to the rotating shaft of the motor.

3. The anti-debris flow impact performance simulation test device according to claim 2, characterized in that: An electric sliding plate valve is arranged at the outlet of the passage.

4. The anti-debris flow impact performance simulation test device according to claim 1, characterized in that: A baffle for closing the discharge gate of the material source stirring system is hingedly connected to the discharge gate.

5. The anti-debris flow impact performance simulation test device according to claim 1, characterized in that: A waste outlet is arranged at the terminal of the mud -rock flow flowing direction on the model case, a waste collecting pool is arranged below the waste outlet, and a filter screen is arranged in the waste collecting pool.

6. The anti-debris flow impact performance simulation test device according to claim 1, characterized in that: A gravity wall is vertically arranged outside the model case, the material source stirring system is fixedly connected to the top of the gravity wall, and the discharge gate is suspended on the gravity wall.

7. The anti-debris flow impact performance simulation test device according to claim 4, characterized in that: A telescopic screw rod is fixedly connected below the baffle.

8. The anti-debris flow impact performance simulation test device according to claim 6, characterized in that: A ladder is fixedly arranged on the side wall of the gravity wall.

9. The anti-debris flow impact performance simulation test device according to claim 1, characterized in that: The clamp includes two clamping plates, the clamping plates are connected by a screw rod and a nut, permanent magnets are fixedly arranged outside the clamping plates, magnetic attraction strips are arranged on the two side faces of the model case, and the clamping plates are fixedly connected to the inside of the model case by the permanent magnets and the magnetic attraction strips.

10. The anti-mud flow impact performance simulation test device according to claim 1, characterized in that: The model case is made of transparent material.

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