Testing device for simulating leakage of earth-rock dam

Abstract

The utility model provides a test device for simulating leakage of an earth-rockfill dam, an earth-rockfill dam model is placed on a base, a first end of the base is sealed through a waterproof plate, and an area enclosed by the waterproof plate and a first slope surface of the earth-rockfill dam model is used for liquid injection so as to simulate the water level in the earth-rockfill dam. A main body of the leakage simulation pipeline is buried in the earth-rockfill dam model, the leakage simulation pipeline is used for simulating a concentrated leakage channel formed by an earth-rockfill dam, an inlet of the first end of the leakage simulation pipeline is supported by a supporting pier and located below the liquid level of the first end of the base, and the inlet of the leakage simulation pipeline is further provided with an electric ball valve and a flow meter; the electric ball valve is used for controlling opening and closing of an inlet of the leakage simulation pipeline, and the flowmeter is used for metering the liquid flow of the leakage simulation pipeline. According to the utility model, the rationality, authenticity and reliability of the test are ensured, and the device plays an important role in earth-rock dam scientific research test, teaching and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of earth-rock dam leakage simulation, in particular to a test device for simulating earth-rock dam leakage. Background Art

[0002] The seepage channel of earth-rock dam refers to the weak structural surface of the earth-rock dam under appropriate geological conditions, which will form a concentrated seepage channel. The continued development of the seepage channel will lead to the collapse of the earth-rock dam. In the process of studying the development and monitoring of the seepage channel, it is necessary to use physical models for research. In the prior art, for example, Chinese invention patent application with publication number CN114112832A discloses a test device and test method for studying the whole process of gravel pipe burst, including a permeameter and an upstream simulation component connected to the permeameter; the upstream simulation component includes a water tank, a lifting component for driving the water tank to rise and fall, and a water supply pipe for connecting the water tank and the permeameter; the permeameter includes a water inlet chamber, a permeable plate, a test barrel, an overflow pipe, an osmometer, a pressure measuring tube, and a data receiving processor; the water inlet chamber is arranged below the test barrel, and the test barrel is connected to the water inlet chamber through the permeable plate; the overflow pipe is arranged near the top of the side wall of the test barrel; the osmometer and the pressure measuring tube are arranged on the side wall of the test barrel; through the osmometer and the pressure measuring tube evenly and alternately arranged on the side wall of the permeameter, the dynamic osmotic pressure water level at different parts of the gravel sample can be accurately measured, and the particle migration test phenomenon of the whole process of the permeameter can be observed in all directions, which provides a reference and design basis for the control and prediction of pipe burst damage in dams and foundation pit engineering. However, the plan did not directly simulate the leakage channel of the earth-rock dam. Utility Model Content

[0003] The purpose of the utility model is to provide a solution that can accurately simulate, conveniently display and simulate the leakage channel of earth-rock dams in view of the shortcomings of the above-mentioned background technology.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a test device for simulating the leakage of an earth-rock dam, comprising a base, a supporting pier, an earth-rock dam model and a leakage simulation pipe, wherein the earth-rock dam model is placed on the base, the first end of the base is sealed by a waterproof board, the area enclosed by the waterproof board and the first slope of the earth-rock dam model is used for liquid injection to simulate the water level in the earth-rock dam, the main body of the leakage simulation pipe is buried inside the earth-rock dam model, the leakage simulation pipe is used to simulate the concentrated leakage channel formed by the earth-rock dam, the inlet of the first end of the leakage simulation pipe is supported by the supporting pier and is located below the liquid level at the first end of the base, the inlet of the leakage simulation pipe is also provided with an electric ball valve and a flow meter, the electric ball valve is used to control the opening and closing of the inlet of the leakage simulation pipe, and the flow meter is used to measure the liquid flow of the leakage simulation pipe.

[0005] Furthermore, the leakage simulation pipe is a PVC hose, a plurality of fine holes are opened on the leakage simulation pipe, quartz sand of different particle sizes is filled in the leakage simulation pipe, and the side surface of the leakage simulation pipe and the outlet at the second end are wrapped with geotextile.

[0006] Furthermore, a liquid injection tube is provided at the first end of the base, and the liquid injection tube is used to continuously replenish liquid to the first end of the base to keep the liquid level stable.

[0007] Furthermore, the second end of the base is also sealed by the waterproof plate and is provided with a drain pipe, and the drain pipe is used to discharge residual liquid sand and gravel after the test.

[0008] Furthermore, a baffle is provided on the base, and the baffle is fixedly connected to the base. The baffle is located at both ends of the earth-rock dam model to fix the earth-rock dam model.

[0009] Furthermore, a baffle support is also provided on the baffle, and the baffle support is fixedly connected to the base.

[0010] Furthermore, the base, the supporting pier, the baffle, and the baffle support are all made of stainless steel, and the waterproof board is made of transparent glass.

[0011] Furthermore, the test device is also provided with a piping simulation pipeline, the main body of which is buried in the bottom layer of the earth-rock dam model, the outlet of the second end of the piping simulation pipeline extends to the second end of the earth-rock dam model, the inlet of the first end of the piping simulation pipeline is supported by the support pier and is located below the liquid level at the first end of the base, and the electric ball valve and the flow meter are also provided at the inlet position of the piping simulation pipeline.

[0012] The above solution of the utility model has the following beneficial effects:

[0013] The test device for simulating earth-rock dam leakage provided by the utility model can perform leakage or pipe burst simulation test through reasonable arrangement of simulated pipelines and earth-rock dam models, and setting of electric ball valves and flow meters. During the whole process, the count of the flow meter can be conveniently observed, and at the same time, the changes of the earth-rock dam model can be conveniently observed, and the corresponding process and data can be recorded, thereby ensuring the rationality, authenticity and reliability of the test, and playing an important role in scientific research testing and teaching of earth-rock dams.

[0014] Other beneficial effects of the present invention will be described in detail in the subsequent specific implementation sections. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view of the overall structure of the utility model;

[0016] Figure 2 It is a top view of the overall structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the earth-rock dam model of the utility model;

[0018] Figure 4 It is a schematic diagram of the leakage simulation pipeline of the utility model.

[0019] [Description of Reference Numerals]

[0020] 1-base; 2-support pier; 3-earth-rock dam model; 4-leakage simulation pipeline; 5-waterproof board; 6-geotextile; 7-electric ball valve; 8-flow meter; 9-injection pipe; 10-discharge pipe; 11-baffle; 12-baffle support; 13-pipe burst simulation pipeline. DETAILED DESCRIPTION

[0021] In order to facilitate the understanding of the present application, the present application will be described more comprehensively with reference to the relevant drawings below. The preferred embodiments of the present application are provided in the drawings. However, the present application can be implemented in many other different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0022] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0023] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0025] Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0026] like Figure 1-Figure 3 As shown, an embodiment of the utility model provides a test device for simulating leakage of an earth-rock dam, comprising a base 1, a support pier 2, an earth-rock dam model 3, and a leakage simulation pipe 4. The earth-rock dam model 3 is placed on the base 1, and the base 1 is divided into a first end and a second end. The three sides of the first end of the base 1 are sealed by a waterproof board 5, and a waterproof structural adhesive is added to the bottom of the waterproof board 5. The area enclosed by the waterproof board 5 and the first slope surface of the earth-rock dam model 3 is filled with liquid to simulate the water level in the earth-rock dam.

[0027] The main body of the leakage simulation pipeline 4 is buried inside the earth-rock dam model 3 to simulate the concentrated leakage channel formed by the earth-rock dam. Figure 4 As shown, the leakage simulation pipe 4 uses a PVC hose, which is provided with a plurality of fine holes, which can be arranged in a plum blossom shape, and the hose is filled with quartz sand of different particle sizes. At the same time, the side surface of the leakage simulation pipe 4 and the outlet at the second end are wrapped with a geotextile 6 to achieve the effect of simulating drainage leakage. The inlet at the first end of the leakage simulation pipe 4 is supported by the support pier 2 and is located below the liquid level at the first end of the base 1, so that the liquid can flow into the leakage simulation pipe 4 and the interior of the earth-rock dam model 3.

[0028] As a preferred embodiment, in this embodiment, an electric ball valve 7 and a flow meter 8 are also provided at the inlet of the leakage simulation pipeline 4. The electric ball valve 7 controls the opening and closing of the inlet of the leakage simulation pipeline 4, thereby starting or stopping the leakage test. The flow meter 8 can observe the liquid flow of the leakage simulation pipeline 4 in real time, so as to achieve the purpose of intuitive display. Among them, the electric ball valve 7, the flow meter 8, etc. are further supported by the support pier 2.

[0029] As a preferred embodiment, in this embodiment, the first end of the base 1 is also provided with a liquid injection pipe 9, which is arranged through the waterproof board 5 and is also watertight. The liquid injection pipe 9 is used to continuously add liquid to the first end of the base 1 to keep the liquid level at this position stable, simulate the liquid level of the earth and rock dam in the natural environment, and further improve the accuracy of the test. Of course, the second end of the base 1 is also sealed by the waterproof board 5 and is provided with a liquid discharge pipe 10, through which the residual liquid sand and gravel after the test are discharged.

[0030] As a preferred embodiment, the slope ratios of the first slope and the second slope of the earth-rock dam model 3 in this embodiment are both set to 1:1.5, and the volume of the earth-rock dam model 3 is 4.5m 3The ratio of mud and sand is 0.5:1.5. The mud and sand are mixed evenly and water is added in appropriate amount. The earth-rock dam model 3 is manufactured according to the compaction degree and water-tight requirements of the earth brick wall.

[0031] As a preferred embodiment, in this embodiment, baffles 11 are further provided on the base 1, and the baffles 11 are located at both ends of the earth-rock dam model 3 to fix the earth-rock dam model 3. The baffles 11 are distributed laterally, and baffle supports 12 distributed longitudinally are also provided on the baffles 11, and the baffle supports 12 are also fixedly connected to the base 1, and can be fixed by welding or other methods to improve the support strength of the earth-rock dam model 3.

[0032] It should be noted that in this embodiment, the base 1, support pier 2, baffle 11, baffle support 12, etc. are all made of stainless steel, which has sufficient strength and is easy to manufacture. The waterproof board 5 can be made of transparent glass to enable direct observation during the test.

[0033] As a further improvement, the test device is also provided with a piping simulation pipeline 13 for simulating the piping channel formed by the earth-rock dam. The main body of the piping simulation pipeline 13 is buried in the bottom layer of the earth-rock dam model 3, and the outlet of the piping simulation pipeline 13 extends to the second end of the earth-rock dam model 3. The piping simulation pipeline 13 also uses a PVC hose, and the hose is filled with quartz sand of different particle sizes. The side surface of the piping simulation pipeline 13 and the outlet of the second end are wrapped with geotextile 6. The inlet of the first end of the piping simulation pipeline 13 is also supported by the support pier 2 and is located below the liquid level of the first end of the base 1. The inlet position of the piping simulation pipeline 13 is also provided with an electric ball valve 7 and a flow meter 8.

[0034] When the test device provided in this embodiment is used for testing, after the test device is assembled, the injection pipe 9 is opened to make the liquid level at the first end of the base 1 reach a preset height and maintain it (which can be controlled by a liquid level sensor), and then the electric ball valve 7 of the leakage simulation pipeline 4 or the pipe burst simulation pipeline 13 is opened to perform a leakage or pipe burst simulation test. During the whole process, the flow meter count can be observed (which can be directly viewed or displayed on the screen), and the changes in the earth-rock dam model 3 are observed at the same time, and the corresponding process, data, etc. are recorded. After the test, the liquid at the second end of the base 1 is discharged through the discharge pipe 10.

[0035] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0036] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A test device for simulating earth-rock dam leakage, characterized in that: The invention comprises a base (1), a supporting pier (2), an earth-rock dam model (3) and a leakage simulation pipeline (4), wherein the earth-rock dam model (3) is placed on the base (1), the first end of the base (1) is sealed by a waterproof board (5), the area enclosed by the waterproof board (5) and the first slope of the earth-rock dam model (3) is used for liquid injection to simulate the water level in the earth-rock dam, the main body of the leakage simulation pipeline (4) is buried inside the earth-rock dam model (3), the leakage simulation pipeline (4) is used to simulate the concentrated leakage channel formed by the earth-rock dam, the inlet of the first end of the leakage simulation pipeline (4) is supported by the supporting pier (2) and is located below the liquid level at the first end of the base (1), the inlet of the leakage simulation pipeline (4) is also provided with an electric ball valve (7) and a flow meter (8), the electric ball valve is used to control the opening and closing of the inlet of the leakage simulation pipeline, and the flow meter is used to measure the liquid flow of the leakage simulation pipeline.

2. A test device for simulating earth-rock dam leakage according to claim 1, characterized in that: The leakage simulation pipe (4) is a PVC hose, a plurality of fine holes are provided on the leakage simulation pipe (4), quartz sand of different particle sizes is filled in the leakage simulation pipe (4), and the side surface of the leakage simulation pipe (4) and the outlet at the second end are wrapped with a geotextile (6).

3. A test device for simulating earth-rock dam leakage according to claim 1, characterized in that: The first end of the base (1) is provided with a liquid injection tube (9), and the liquid injection tube (9) is used to continuously replenish liquid to the first end of the base (1) so that the liquid level remains stable.

4. A test device for simulating earth-rock dam leakage according to claim 1, characterized in that: The second end of the base (1) is also sealed by the waterproof plate (5) and is provided with a drainage pipe (10), wherein the drainage pipe (10) is used to discharge residual liquid sand and gravel after the test.

5. The test device for simulating earth-rock dam leakage according to claim 1, characterized in that: The base (1) is also provided with a baffle (11), the baffle (11) being fixedly connected to the base (1), and the baffle (11) being located at both ends of the earth-rock dam model (3) to fix the earth-rock dam model (3).

6. A test device for simulating earth-rock dam leakage according to claim 5, characterized in that: The baffle plate (11) is also provided with a baffle plate support (12), and the baffle plate support (12) is fixedly connected to the base (1).

7. A test device for simulating earth-rock dam leakage according to claim 6, characterized in that: The base (1), the supporting pier (2), the baffle (11), and the baffle support (12) are all made of stainless steel, and the waterproof board (5) is made of transparent glass.

8. A test device for simulating earth-rock dam leakage according to claim 7, characterized in that: The test device is also provided with a piping simulation pipeline (13), the main body of which is buried in the bottom layer of the earth-rock dam model (3), the outlet of the second end of the piping simulation pipeline (13) extends to the second end of the earth-rock dam model (3), the inlet of the first end of the piping simulation pipeline (13) is supported by the support pier (2) and is located below the liquid surface at the first end of the base (1), and the electric ball valve (7) and the flow meter (8) are also provided at the inlet of the piping simulation pipeline (13).

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