Three-dimensional grating reinforced earth and rockfill dam overtopping experiment device

Abstract

The utility model relates to the technical field of hydraulic model experiment facilities, and discloses a three-dimensional grating reinforced earth and rockfill dam overtopping experiment device which comprises an earth and rockfill dam model, a glass water tank, a water circulation filtering assembly and a data monitoring system. A three-dimensional geotechnical steel-plastic grating is installed in a soil piling area of the earth and rockfill dam model, a displacement sensor and a seepage monitoring sensor are installed on the surface of the three-dimensional geotechnical steel-plastic grating, a hydraulic sensor is installed at the upstream slope toe of the earth and rockfill dam model, and a groove is formed in the longitudinal glass surface of the glass water tank. And an adjusting template capable of setting an angle is mounted at the top of the glass water tank. The integrality of the earth and rockfill dam can be enhanced by placing the three-dimensional grating in the earth and rockfill dam, then the two angle adjusting rotating wheels on the longitudinal glass are adjusted to form the earth and rockfill dams with different slope angles and different top widths, overtopping experiments of the different earth and rockfill dams are achieved, and the influence of water permeation on the experiments can be reduced by carving the grooves in the water tank glass.

Description

Technical Field

[0001] This utility model relates to the technical field of hydraulic model experimental facilities, specifically to an experimental device for the overtopping of an earth-rock dam reinforced with a three-dimensional grid. Background Technology

[0002] With the frequent occurrence of natural disasters, dam failures are characterized by low probability and high risk. According to the form of failure, dam failures are divided into three categories: instantaneous total failure, instantaneous partial failure, and gradual failure. Once a dam fails, it is usually an instantaneous total failure. If it is an instantaneous total failure, the flood is often accompanied by a large flood peak, violent flow process, strong destructive force, and huge disaster. Geogrids are often used in roadbed reinforcement, culvert construction, and slope construction to enhance structural stability.

[0003] In existing technologies, dam reinforcement often uses the method of spraying concrete on the slope. There are few research results on dam models reinforced with three-dimensional grids, which need to be studied in depth.

[0004] In view of this, the present invention proposes an experimental device for the overtopping of earth-rock dams reinforced with three-dimensional grids to solve the above-mentioned technical problems. Utility Model Content

[0005] To address the shortcomings of the aforementioned background technology, this utility model provides a technical solution for a three-dimensional grid-reinforced earth-rock dam overtopping experimental device, aiming to more conveniently simulate the reinforcement effect of a three-dimensional grid in the case of an earth-rock dam overtopping.

[0006] This utility model provides the following technical solution: a three-dimensional grid-reinforced earth-rock dam overtopping experimental device, including an earth-rock dam model, a glass water tank, a water circulation filtration component, and a data monitoring system;

[0007] The earth-rock dam model is placed in a glass water tank. A three-dimensional geogrid is installed in the soil-filling area of ​​the earth-rock dam model. Displacement sensors and seepage monitoring sensors are installed on the surface of the three-dimensional geogrid. A hydraulic sensor is installed at the upstream slope toe of the earth-rock dam model. Grooves are opened on the longitudinal glass surface of the glass water tank. An adjustment template is installed on the top of the glass water tank.

[0008] As a preferred technical solution of this utility model, the earth-rock dam model includes a core wall, an upstream soil accumulation area and a downstream soil accumulation area. The core wall is placed in a glass water tank. Three-dimensional geogrids are set in the upstream soil accumulation area and the downstream soil accumulation area. The earth-rock dam model is applicable to various dam types such as clay core wall dams, asphalt concrete core wall dams and reinforced concrete core wall dams.

[0009] As a preferred technical solution of this utility model, the three-dimensional geogrid includes a two-dimensional geogrid, and the opposite surfaces of the two-dimensional geogrid are provided with connecting members. The connecting members include a threaded rod and a threaded cylinder, and the threaded rod and the threaded cylinder are connected by threads.

[0010] As a preferred embodiment of this utility model, the glass water tank is made of tempered glass. Vertical and horizontal grooves are provided on the surface of the longitudinal glass on the side and bottom of the glass water tank. The adjustment template at the top of the glass water tank is connected to the adjustment wheel via a rotating shaft. The surface of the adjustment wheel is provided with scale lines. A horizontal moving track is provided on the surface of the longitudinal glass. The surface of the horizontal moving track is provided with scale lines. Threaded pressure rods are installed on the horizontal glass surfaces on both sides of the glass water tank. Transparent grid stickers are provided on the side and outer side of the glass water tank.

[0011] In a preferred embodiment of this invention, the displacement sensor, the seepage monitoring sensor, and the data monitoring system are electrically connected.

[0012] As a preferred technical solution of this utility model, a hydraulic sensor is installed at the toe of the slope of the earth-rock dam model, and the hydraulic sensor is electrically connected to the data monitoring system.

[0013] As a preferred technical solution of this utility model, an upstream water inlet is provided at the bottom of the inner cavity of the glass water tank, and a thin-walled weir is installed between the upstream water inlet and the earth-rock dam model. The width and height of the thin-walled weir are half the width and height of the glass water tank.

[0014] As a preferred technical solution of this utility model, the water circulation filtration assembly consists of a water storage tank, an inlet pipe, and a drain pipe. The surface of the inlet pipe and the drain pipe is equipped with a water pump, and the inside of each water pump is equipped with a magnetic flow valve. A filter tank is installed at one end of the drain pipe.

[0015] As a preferred embodiment of this utility model, a filter screen with an inclination of ° is placed inside the filter tank, and an outlet is provided on the surface of the filter tank, with a waste storage container provided below the outlet.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The three-dimensional geogrid installed in this utility model enhances the integrity of the earth-rock dam model.

[0018] 2. The adjustable template installed in this utility model enables flexible changes in the top width and slope of the earth-rock dam model.

[0019] 3. This utility model reduces the impact of water seepage at the contact point between the earth-rock dam model and the glass water tank by engraving grooves on the glass water tank, thereby improving the simulation effect.

[0020] 4. This utility model allows for direct observation of the erosion process of an earth-rock dam model by attaching transparent grid stickers to the glass of a glass water tank.

[0021] 5. The displacement sensor, seepage monitoring sensor, and hydraulic sensor at the upstream slope toe of the earth-rock dam model installed on the three-dimensional geogrid of this utility model are connected to the data monitoring system, realizing real-time monitoring of the dam.

[0022] 6. The water circulation filter component of this utility model can effectively reuse water, thus saving water.

[0023] 7. This utility model has a simple structure, the experimental scheme is easy to adjust and optimize, it is highly operable, and it can be widely used in dam overtopping experiments. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0025] Figure 2 This is a longitudinal sectional view of the glass water tank of this utility model;

[0026] Figure 3 This is a longitudinal front view of the side of the glass water tank of this utility model;

[0027] Figure 4 This is a partial top view of the longitudinal side glass of the glass water tank of this utility model;

[0028] Figure 5 This is a three-dimensional geogrid structure diagram of the present invention;

[0029] Figure 6 This is a structural diagram of the three-dimensional geogrid connecting component of this utility model;

[0030] Figure 7 This is a three-dimensional structural diagram of the filter tank of this utility model;

[0031] Figure 8 This is a top view of the overall structure of this utility model.

[0032] In the diagram: 1. Earth-rock dam model; 2. Glass water tank; 3. Water circulation filtration assembly; 4. Data monitoring system; 5. Upstream soil dumping area; 6. Downstream soil dumping area; 7. Three-dimensional geogrid; 8. Displacement sensor; 9. Seepage monitoring sensor; 10. Hydraulic sensor; 11. Longitudinal glass; 12. Groove; 13. Adjustment template; 14. Core wall; 15. Two-dimensional geogrid; 16. Connecting component; 17. Threaded rod; 18. Threaded cylinder; 19. Rotating shaft; 20. Adjustment wheel; 21. Horizontal moving track; 22. Transverse glass; 23. Threaded pressure rod; 24. Transparent grid sticker; 25. Upstream inlet; 26. Thin-walled weir; 27. Water storage tank; 28. Inlet pipe; 29. ​​Drain pipe; 30. Water pump; 31. Filter tank; 32. Filter screen; 33. Discharge outlet; 34. Waste storage tank. Detailed Implementation

[0033] 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.

[0034] Example

[0035] An experimental device for overtopping of an earth-rock dam reinforced by a three-dimensional grid includes an earth-rock dam model 1, a glass water tank 2, a water circulation and filtration assembly 3, and a data monitoring system 4. The data acquisition instrument of the data monitoring system 4 receives signals from the sensors and uploads them to the Internet of Things remote terminal to realize real-time monitoring of the overtopping experiment of the earth-rock dam.

[0036] The earth-rock dam model 1 is placed in the glass water tank 2. A three-dimensional geogrid 7 is installed in the soil accumulation area of ​​the earth-rock dam model 1. Displacement sensors 8 and seepage monitoring sensors 9 are installed on the surface of the three-dimensional geogrid 7. A hydraulic sensor 10 is installed at the upstream slope toe of the earth-rock dam model 1. A groove 12 is opened on the surface of the longitudinal glass 11 of the glass water tank 2. An adjustment template 13 is installed on the top of the glass water tank 2.

[0037] Among them, the earth-rock dam model 1 includes a core wall 14, an upstream soil dumping area 5 and a downstream soil dumping area 6. The core wall 14 is placed in a glass water tank 2. Three-dimensional geogrids 7 are set in the upstream soil dumping area 5 and the downstream soil dumping area 6. The earth-rock dam model 1 is suitable for various dam types such as clay core wall dams, asphalt concrete core wall dams and reinforced concrete core wall dams.

[0038] The three-dimensional geogrid 7 includes a two-dimensional geogrid 15. The two-dimensional geogrid 15 has a connecting member 16 on its opposite side. The connecting member 16 includes a threaded rod 17 and a threaded cylinder 18. The threaded rod 17 and the threaded cylinder 18 are connected by threads. The connecting member 16 is made of steel-plastic material and the vertical distance between the two layers of grid can be adjusted by rotating the threaded rod 17 and the threaded cylinder 18. The three-dimensional geogrid 7 is made of high-strength steel wire that has been specially treated and mixed with polyethylene or polypropylene, which has the characteristics of high strength and corrosion resistance.

[0039] The glass water tank 2 is made of tempered glass. Vertical and horizontal grooves 12 are formed on the sides and bottom of the longitudinal glass 11 of the glass water tank 2. These grooves increase the seepage path and reduce the impact of seepage at the boundary between the earth-rock dam model 1 and the glass water tank 2 on the experiment. The adjusting template 13 at the top of the glass water tank 2 is connected to the adjusting wheel 20 via a rotating shaft 19. The adjusting wheel 20 has scale lines on its surface. Rotating the adjusting wheel 20 allows setting the angle between the adjusting template 13 and the horizontal direction. The adjusting wheel 20 can move horizontally and longitudinally. The surface of the longitudinal glass 11 has horizontal movement... The track 21 has scale lines on its surface. The distance between the two adjustment templates 13 can be set by moving the adjustment wheel 20. The angle and distance between the two adjustment templates 13 can be preset to flexibly and conveniently set the upstream and downstream slope and top width when making the earth-rock dam model 1. The horizontal glass 22 on both sides of the glass water tank 2 is equipped with threaded pressure rods 23. By turning the threaded pressure rods 23, pressure is applied to the adjustment templates 13, thereby achieving the purpose of compacting the earth-rock dam. The sides and outer sides of the glass water tank 2 are equipped with transparent grid stickers 24. The failure mode of the earth-rock dam can be observed more intuitively through the transparent grid stickers 24.

[0040] Among them, the displacement sensor 8, the seepage monitoring sensor 9 and the data monitoring system 4 are electrically connected, which can upload deformation data and seepage data of earth-rock dam model 1 in real time.

[0041] Hydraulic sensor 10 is installed at the toe of the slope of earth-rock dam model 1. Hydraulic sensor 10 is electrically connected to data monitoring system 4. Through the connection between hydraulic sensor 10 and data monitoring system 4, the upstream water pressure status can be uploaded in real time.

[0042] The bottom of the inner cavity of the glass water tank 2 is provided with an upstream inlet 25. A thin-walled weir 26 is installed between the upstream inlet 25 and the earth-rock dam model 1. The width and height of the thin-walled weir 26 are half the width and height of the glass water tank 2.

[0043] The water circulation filter assembly 3 consists of a water storage tank 27, an inlet pipe 28, and a drain pipe 29. The surfaces of the inlet pipe 28 and the drain pipe 29 are equipped with water pumps 30. The inside of each water pump 30 is equipped with a magnetic flow valve. By setting the magnetic flow valve, the water flow can be controlled and water backflow can be prevented. One end of the drain pipe 29 is equipped with a filter tank 31. By setting the filter tank 31, the filter tank 31 can filter sand, stone, and soil.

[0044] Inside the filter tank 31, there is a filter screen 32 tilted at 30°. The surface of the filter tank 31 has an outlet 33. Below the outlet 33, there is a waste storage container 34. Sand, soil, stone and other particles screened out by the waste storage container 34 enter the waste storage container 34 through the outlet 33.

[0045] The specific usage and function of this embodiment are as follows:

[0046] In this invention, the adjusting template 13 is first adjusted to a preset angle by adjusting the rotating wheel 20. The threaded pressure rod 23 is rotated to press against the adjusting template 13 to prevent it from rotating. Core wall material is then placed into the glass water tank 2, and the threaded pressure rod 23 is rotated to apply pressure to the adjusting template 13, thereby compacting the core wall 14. After curing, the spacing between the adjusting wheels 20 is adjusted, and then the soil accumulation area material (including soil and rock material, three-dimensional geogrid 7, displacement sensor 8, and seepage monitoring sensor 9) is placed into the glass water tank 2 and compacted for curing. After curing, the adjusting template 13 is returned to a horizontal position. A hydraulic sensor 10 is installed at the upstream slope angle, and the magnetic flow valve is opened to inject water into the glass water tank 2. When the water pressure reaches a preset value, the magnetic flow valve is closed, and the data from the data monitoring system 4 is observed and recorded. The experiment ends after the collected data stabilizes.

[0047] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Additionally, in the accompanying drawings of this utility model, the fill patterns are merely for distinguishing layers and do not constitute any other limitation.

[0048] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An experimental device for overtopping of an earth-rock dam reinforced with a three-dimensional grid, comprising: Earth-rock dam model (1), glass water tank (2), water circulation filtration assembly (3), data monitoring system (4); The features are as follows: the earth-rock dam model (1) is placed in a glass water tank (2), a three-dimensional geogrid (7) is installed in the soil-filling area of ​​the earth-rock dam model (1), a displacement sensor (8) and a seepage monitoring sensor (9) are installed on the surface of the three-dimensional geogrid (7), a hydraulic sensor (10) is installed at the upstream slope toe of the earth-rock dam model (1), a groove (12) is opened on the surface of the longitudinal glass (11) of the glass water tank (2), and an adjustment template (13) is installed on the top of the glass water tank (2).

2. The experimental device for overtopping of an earth-rock dam reinforced with a three-dimensional grid, as described in claim 1, is characterized in that: The earth-rock dam model (1) includes a core wall (14), an upstream soil dumping area (5), and a downstream soil dumping area (6). The core wall (14) is placed in a glass water tank (2). Three-dimensional geogrids (7) are installed in the upstream soil dumping area (5) and the downstream soil dumping area (6). The earth-rock dam model (1) is applicable to various dam types, including clay core wall dams, asphalt concrete core wall dams, and reinforced concrete core wall dams.

3. The experimental device for overtopping of an earth-rock dam reinforced with a three-dimensional grid, as described in claim 1, is characterized in that: The three-dimensional geogrid (7) includes a two-dimensional geogrid (15). The two-dimensional geogrid (15) has a connecting member (16) on its opposite side. The connecting member (16) includes a threaded rod (17) and a threaded cylinder (18). The threaded rod (17) and the threaded cylinder (18) are connected by threads.

4. The experimental device for overtopping of an earth-rock dam reinforced with a three-dimensional grid, as described in claim 1, is characterized in that: The glass water tank (2) is made of tempered glass. Vertical and horizontal grooves (12) are provided on the surface of the side and bottom longitudinal glass (11) of the glass water tank (2). The adjustment template (13) at the top of the glass water tank (2) is connected to the adjustment wheel (20) through the rotating shaft (19). The surface of the adjustment wheel (20) is provided with scale lines. The surface of the longitudinal glass (11) is provided with a horizontal moving track (21). The surface of the horizontal moving track (21) is provided with scale lines. Threaded pressure rods (23) are installed on the surface of the horizontal glass (22) on both sides of the glass water tank (2). Transparent grid stickers (24) are provided on the side and outer side of the glass water tank (2).

5. The experimental device for overtopping of an earth-rock dam reinforced with a three-dimensional grid, as described in claim 1, is characterized in that: The displacement sensor (8), the seepage monitoring sensor (9), and the data monitoring system (4) are electrically connected.

6. The experimental device for overtopping of an earth-rock dam reinforced with a three-dimensional grid, as described in claim 1, is characterized in that: A hydraulic sensor (10) is installed at the toe of the slope of the earth-rock dam model (1), and the hydraulic sensor (10) is electrically connected to the data monitoring system (4).

7. The experimental device for overtopping of an earth-rock dam reinforced with a three-dimensional grid according to claim 1, characterized in that: The bottom of the inner cavity of the glass water tank (2) is provided with an upstream water inlet (25), and a thin-walled weir (26) is installed between the upstream water inlet (25) and the earth-rock dam model (1). The width and height of the thin-walled weir (26) are half the width and height of the glass water tank (2).

8. The experimental device for overtopping of an earth-rock dam reinforced with a three-dimensional grid according to claim 1, characterized in that: The water circulation filter assembly (3) consists of a water storage tank (27), an inlet pipe (28), and a drain pipe (29). The surfaces of the inlet pipe (28) and the drain pipe (29) are equipped with water pumps (30). The inside of each water pump (30) is equipped with a magnetic flow valve. One end of the drain pipe (29) is equipped with a filter tank (31).

9. The experimental device for overtopping of an earth-rock dam reinforced with a three-dimensional grid, as described in claim 8, is characterized in that: The filter tank (31) has a filter screen (32) tilted at 30° inside. The surface of the filter tank (31) has an outlet (33), and a waste storage container (34) is provided below the outlet (33).

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