Landslide damage simulation test device

Abstract

The utility model relates to the technical field of model tests, and discloses a landslide damage simulation test device which comprises a model test box, a rainfall frame, a hydraulic assembly, a plurality of spraying assemblies, a water tank assembly and a constant temperature system. The angle of the landslide model box can be adjusted through the hydraulic machine so as to change the slope of a model test landslide soil body; the multiple spraying assemblies are arranged at the top of the rainfall frame and located over the model test box, the output ends of the spraying assemblies aim at a test soil body in the model test box, the influence of rainfall on landslide slippage is simulated by adjusting the spraying size, and the constant temperature system is arranged at the top of the model test box and used for regulating and controlling the temperature of the test soil body. The constant temperature system is used for measuring the influence of the dry-wet cycle effect on the landslide soil body.

Description

Technical Field

[0001] The utility model relates to the technical field of model tests, in particular to a landslide damage simulation test device. Background Art

[0002] With the rapid development of economy and technology, the intensity of infrastructure construction has been continuously increased, the density of highway network has been continuously increased, and the number of highway projects crossing the northwest region has gradually increased. There are a large number of structurally unstable slopes in mountainous areas and plateaus. Under the influence of heavy rainfall, natural disasters such as landslides and mud-rock flows are easily formed. According to statistics, landslides have the highest proportion of all natural disasters that occur each year, accounting for more than 70% of the total geological disasters. Therefore, it is of certain practical significance to study the damage of landslides under rainfall conditions. Studying the damage mechanism of landslides can better prevent and reduce disasters, reduce the losses caused to the people by natural disasters such as landslides and mud-rock flows, protect people's lives and property, and improve social benefits.

[0003] At present, there are many model test devices for landslides, but most of them only analyze the damage of landslides for one factor, and cannot effectively analyze the damage mode and damage mechanism of landslides. For slope changes, the test is usually carried out by changing the slope of the fill to simulate the landslide. The operation is cumbersome and the workload is large. Moreover, as the slope of the landslide increases, the landslide soil filling becomes more and more difficult. At the same time, when analyzing the damage caused by multiple factors to the landslide, finite element software is often used for modeling and analysis. Although finite element software analysis is very convenient, it is still different from the actual project. Therefore, designing a new model test device is of great significance for engineering analysis. Utility Model Content

[0004] In order to overcome the defects of the prior art, the purpose of the utility model is to provide a landslide damage simulation test device to solve the technical problem that it is difficult to simulate the landslide damage problem under complex working conditions in the current model test.

[0005] The utility model is realized by the following technical solutions:

[0006] A landslide damage simulation test device comprises a model test box, a rainfall frame, a hydraulic assembly, a plurality of spray assemblies, a water tank assembly and a constant temperature system; the model test box is filled with a test soil body, the model test box is located in the rainfall frame, the hydraulic assembly is arranged on one side of the bottom of the model test box, and is used to lift up one side of the model test box to form an inclined structure, a plurality of spray assemblies are arranged on the top of the rainfall frame, and are located directly above the model test box, and the output end of the spray assembly is aligned with the test soil body in the model test box, and the input end of the spray assembly is connected to the water tank assembly, and the constant temperature system is arranged on the top of the model test box, and is used to control the temperature of the test soil body.

[0007] Preferably, the rainfall frame includes a rainfall connecting rod frame and a plurality of rainfall rack telescopic rods, the plurality of rainfall rack telescopic rods are vertically distributed along the edge of the rainfall connecting rod frame, a plurality of spray assemblies are distributed on the rainfall connecting rod frame, and the model test box is located directly below the rainfall connecting rod frame.

[0008] Furthermore, the spray assembly includes a pulley and a spray nozzle, the pulley is slidably set on the rainfall connecting rod frame, and buckles are provided on both sides of the pulley, the spray nozzle is set on the pulley, and the input end of the spray nozzle is connected to the water tank assembly via the pulley and the rainfall connecting rod frame.

[0009] Furthermore, the water tank assembly includes a rain gauge, a water pump and a water tank; the output end of the water tank is connected to the water pump, the output end of the water pump is connected to the spray nozzle via a rainfall connecting rod frame and a pulley, and the rain gauge is arranged between the spray nozzle and the water pump.

[0010] Preferably, the hydraulic assembly includes a hydraulic rod and a hydraulic press; the hydraulic rod is arranged on one side of the bottom of the model test box, and the driving end of the hydraulic rod is connected to the hydraulic press.

[0011] Preferably, a constant temperature support frame is provided on the top of the model test box, and both ends of the constant temperature system are respectively fixed on the constant temperature support frame and are located directly above the test soil body.

[0012] Furthermore, the constant temperature system includes a constant temperature heating device, and the constant temperature support frame is provided with a mounting groove, and both ends of the constant temperature heating device are fixed to the mounting groove by fixing buckles.

[0013] Furthermore, a stopper is provided at the end of the model test box to prevent the test soil in the model test box from sliding down.

[0014] Preferably, a base is provided in the rainfall frame, and the model test box is placed on the base.

[0015] Preferably, the four sides of the model test box are made of transparent tempered glass, the bottom is a steel plate, and scale lines are provided on the side walls of the model test box. A pressure sensor, a moisture sensor, and a temperature sensor are buried in the test soil.

[0016] Compared with the prior art, the utility model has the following beneficial technical effects:

[0017] The utility model provides a landslide damage simulation test device, which comprises a model test box, a rainfall frame, a hydraulic component, a plurality of spray components, a water tank component and a constant temperature system. A landslide test soil body is placed inside the model box, and the angle of the landslide model box can be adjusted by a hydraulic press to change the slope of the model test landslide soil body; the plurality of spray components are arranged on the top of the rainfall frame, which is located directly above the model test box, and the output ends of the spray components are aimed at the test soil body in the model test box, and the influence of rainfall on the landslide sliding is simulated by adjusting the spray size; the constant temperature system is arranged on the top of the model test box and is used for regulating the temperature of the test soil body, and the influence of dry-wet cycle on the landslide soil body is measured by the constant temperature system.

[0018] Furthermore, the rainfall frame includes a rainfall connecting rod frame and a plurality of rainfall frame telescopic rods, the plurality of rainfall frame telescopic rods are vertically distributed along the edge of the rainfall connecting rod frame, a plurality of spray assemblies are distributed on the rainfall connecting rod frame, and the model test box is located directly below the rainfall connecting rod frame, which effectively simulates the effect of rainfall on landslide sliding by adjusting the spray size.

[0019] Furthermore, the spray assembly includes a pulley and a spray nozzle. The pulley is slidably set on the rainfall connecting rod frame, and buckles are provided on both sides of the pulley. The spray nozzle is set on the pulley. The input end of the spray nozzle is connected to the water tank assembly via the pulley and the rainfall connecting rod frame. The spray nozzle can adjust the rainfall point position through the pulley and then be fixed by the buckle device to prevent it from moving during rainfall.

[0020] Furthermore, the hydraulic assembly includes a hydraulic rod and a hydraulic press; the hydraulic rod is arranged on one side of the bottom of the model test box, and the driving end of the hydraulic rod is connected to the hydraulic press to facilitate adjustment of the angle of the landslide body in the model box.

[0021] Furthermore, a constant temperature support frame is provided on the top of the model test box, and both ends of the constant temperature system are respectively fixed on the constant temperature support frame and are located directly above the test soil. The constant temperature system includes a constant temperature heating device, and an installation groove is provided on the constant temperature support frame. Both ends of the constant temperature heating device are fixed to the installation groove by fixing buckles, thereby improving the stability of the assembly of the constant temperature heating device. By starting the constant temperature system, the influence of dry-wet cycle on the landslide soil is studied.

[0022] Furthermore, the four sides of the model test box are made of transparent tempered glass, the bottom is made of steel plate, and the side walls of the model test box are provided with scale lines to facilitate recording the displacement of the soil during sliding. Pressure sensors, moisture sensors, and temperature sensors buried in the test soil can effectively measure the changes in the moisture, displacement, and soil pressure inside the soil at various stages of landslide damage, which is convenient for in-depth analysis of the landslide sliding mechanism under rainfall. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the landslide damage simulation test device in the utility model;

[0024] Figure 2 for Figure 1 Enlarged schematic diagram of the telescopic rod of the rain rack in part A

[0025] Figure 3 This is a schematic diagram of the structure of the spray assembly in the utility model;

[0026] Figure 4 This is a schematic diagram of the structure of the constant temperature system in the utility model;

[0027] In the figure: 1-model test box; 2-rainfall frame; 3-test soil; 4-hydraulic press; 5-rainfall frame telescopic rod; 6-rain gauge; 7-water pump; 8-water tank; 9-spray assembly; 10-constant temperature system; 11-pulley; 12-buckle; 13-spray nozzle; 14-constant temperature heating equipment; 15-fixing buckle; 16-installation slot; 17-base; 18-block; 19-constant temperature support frame; 20-hydraulic rod. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0029] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, products or devices.

[0030] The utility model is further described in detail below with reference to the accompanying drawings:

[0031] The utility model provides a landslide damage simulation test device. On the one hand, through the hydraulic press installed at the bottom of the model test box, the angle of the model test slope can be flexibly adjusted during the test, thereby realizing a variable-angle landslide model test. On the other hand, through the spray system and the constant temperature system, the landslide model test mechanism research under dry and wet effects can be realized, which is more applicable when dealing with various complex working conditions and the research results are more guaranteed.

[0032] See also Figure 1 The utility model provides a landslide damage simulation test device, including a model test box 1, a rainfall frame 2, a hydraulic component, a plurality of spray components 9, a water tank component and a constant temperature system 10; the model test box 1 is filled with a test soil 3, the model test box 1 is located in the rainfall frame 2, the hydraulic component is arranged on one side of the bottom of the model test box 1, and is used to lift one side of the model test box 1 to form an inclined structure, a plurality of spray components 9 are arranged on the top of the rainfall frame 2, and are located directly above the model test box 1, and the output end of the spray component 9 is aligned with the test soil 3 in the model test box 1, and the input end of the spray component 9 is connected to the water tank component, and the constant temperature system 10 is arranged on the top of the model test box 1, and is used to control the temperature of the test soil 3, heat the test soil 3, and consider the model test landslide deformation under the effect of dry-wet cycle.

[0033] Specifically, the rainfall frame 2 includes a rainfall connecting rod frame and a plurality of rainfall frame telescopic rods 5, the plurality of rainfall frame telescopic rods 5 are vertically distributed along the edge of the rainfall connecting rod frame, a plurality of spray assemblies 9 are distributed on the rainfall connecting rod frame, the model test box 1 is located directly below the rainfall connecting rod frame, and the rainfall frame telescopic rods 5 play a regulating role, such as Figure 2 As shown, it is convenient to lift and lower the rainfall equipment, easy to transport the equipment, and also convenient to adjust the state of the spray nozzle after lowering.

[0034] Specifically, according to Figure 3 As shown, the spray assembly 9 includes a pulley 11 and a spray nozzle 13. The pulley 11 is slidably set on the rainfall connecting rod frame, and buckles 12 are provided on both sides of the pulley 11, which can avoid the change of rainfall position caused by the sliding of the pulley during the experiment; the spray nozzle 13 is set on the pulley 11, which can more conveniently change the rainfall position to meet the needs of the model test. The input end of the spray nozzle 13 is connected to the water tank assembly via the pulley 11 and the rainfall connecting rod frame, which is used to provide homogeneous atomized rainfall for the test soil.

[0035] Among them, the water tank assembly includes a rain gauge 6, a water pump 7 and a water tank 8; the output end of the water tank 8 is connected to the water pump 7, and the output end of the water pump 7 is connected to the spray nozzle 13 through a rainfall connecting rod frame and a pulley 11. The rain gauge 6 is arranged between the spray nozzle 13 and the water pump 7, which can adjust the amount of rainfall during the test to meet the needs of actual simulated rainfall intensity.

[0036] Specifically, the hydraulic assembly includes a hydraulic rod 20 and a hydraulic press 4; the hydraulic rod 20 is arranged on one side of the bottom of the model test box 1, and the driving end of the hydraulic rod 20 is connected to the hydraulic press 4, and the hydraulic press 4 is adjusted to meet the actual engineering needs so that the model test landslide reaches a predetermined landslide slope.

[0037] Specifically, a constant temperature support frame 19 is provided on the top of the model test box 1, and both ends of the constant temperature system 10 are respectively fixed on the constant temperature support frame 19 and are located directly above the test soil 3 to provide a variable constant temperature for the test soil to simulate the impact of solar radiation on the landslide and ensure the safe operation of the equipment and the test.

[0038] The constant temperature system 10 includes a constant temperature heating device 14. The constant temperature support frame 19 is provided with a mounting groove 16. Both ends of the constant temperature heating device 14 are fixed to the mounting groove 16 by fixing buckles 15. Figure 4 shown.

[0039] A stopper 18 is provided at the end of the model test box 1 to prevent the test soil 3 in the model test box 1 from sliding down.

[0040] A base 17 is provided in the rainfall frame 2 , and the model test box 1 is placed on the base 17 .

[0041] Specifically, the four sides of the model test box 1 are made of transparent tempered glass, the bottom is made of steel plate, and scale lines are arranged on the side walls of the model test box 1. A pressure sensor, a moisture sensor, and a temperature sensor are buried in the test soil body 3.

[0042] Embodiment 1:

[0043] The steps for using this device to conduct a model test are as follows:

[0044] 1. Constructing the model test landslide soil. Specifically, according to the various similarity constants in the model test, the landslide to be analyzed in the construction site section is scaled accordingly, so as to construct the model test soil 3 in the model test box 1 using the calculated data. The model landslide test soil is filled in the model test box 1 in a horizontal state. When filling the soil, pressure sensors, moisture sensors, and temperature sensors can be buried at the same time to facilitate monitoring of various parameters inside the soil during landslide deformation and damage.

[0045] 2. Adjust the slope of the model test landslide. According to the test working condition design, adjust the hydraulic press 4 to make the model test box 1 rise slowly, and adjust the angle of the model test box 1 to adjust the slope of the model test landslide until the slope of the model test landslide reaches the specified test working condition requirements.

[0046] 3. Install the rainfall equipment. Place the rainfall frame 2 directly above the model test box 1, adjust the spray nozzles 13 by the pulley 11 to be evenly distributed above the model test box 1, and then fix it with the buckle 12. After the spray system is checked, adjust the rainfall telescopic rod 5 to raise the rainfall equipment to the specified height to complete the installation.

[0047] 4. Adjust the rainfall intensity. The specific operation is to turn on the water pump 7, adjust the rain gauge 6, calculate the model test rainfall so that it is in the same proportion as the actual rainfall, and then rain in batches and times until the landslide is damaged. The test is ended. Record the landslide damage characteristics and record the displacement damage values ​​of various parts of the landslide according to the scale lines on the outside of the model box.

[0048] 5. At the end of the test, the failure form of the landslide is combined with the numerical changes in various sensors to analyze the mechanism of landslide failure under different working conditions, and provide guiding suggestions for on-site engineering.

[0049] Embodiment 2:

[0050] The operation different from Example 1 is that this operation analyzes the influence of different rainfall positions on the stability of the landslide. After setting the landslide slope and rainfall intensity, the spray nozzle 13 is adjusted to different areas above the model test box 1 by adjusting the telescopic rod 5 and the pulley 11 of the rainfall rack. While ensuring that the landslide slope and rainfall conditions remain unchanged, multiple tests are carried out to analyze the influence of different rainfall positions on the stability of the landslide.

[0051] Embodiment 3:

[0052] The operation condition different from that of Example 1 is that this operation analyzes the effect of dry-wet cycle on the stability of landslide. Under the set landslide slope and rainfall intensity, after a period of testing (no damage to the landslide), the spray assembly 9 is turned off, and the constant temperature heating device 14 in the constant temperature system 10 is turned on to heat the landslide soil. When the soil is heated and restored to the natural moisture content of the soil, the spray assembly 9 is turned on again to perform a reciprocating cycle to analyze the effect of dry-wet cycle on the stability of the landslide.

[0053] In summary, this device can flexibly adjust the angle of the model test slope during the test by installing a hydraulic press at the bottom of the model test box, thereby realizing a variable-angle landslide model test. In addition, the design of the spray system and the constant temperature system can also realize the research on the mechanism of the landslide model test under dry and wet effects, which is more applicable when dealing with a variety of complex working conditions and provides powerful help for the analysis of actual working conditions.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or replaced by equivalents, and any modification or equivalent replacement that does not depart from the spirit and scope of the utility model should be included in the scope of protection of the claims of the utility model.

Claims

1. A landslide damage simulation test device, characterized in that: The invention comprises a model test box (1), a rainfall frame (2), a hydraulic assembly, a plurality of spray assemblies (9), a water tank assembly and a constant temperature system (10); the model test box (1) is filled with a test soil (3), the model test box (1) is located in the rainfall frame (2), the hydraulic assembly is arranged on one side of the bottom of the model test box (1) and is used to lift one side of the model test box (1) to form an inclined structure, the plurality of spray assemblies (9) are arranged on the top of the rainfall frame (2) and are located directly above the model test box (1), and the output end of the spray assembly (9) is aligned with the test soil (3) in the model test box (1), the input end of the spray assembly (9) is connected to the water tank assembly, and the constant temperature system (10) is arranged on the top of the model test box (1) and is used to control the temperature of the test soil (3).

2. A landslide damage simulation test device according to claim 1, characterized in that: The rainfall frame (2) comprises a rainfall connecting rod frame and a plurality of rainfall frame telescopic rods (5), wherein the plurality of rainfall frame telescopic rods (5) are vertically distributed along the edge of the rainfall connecting rod frame, and a plurality of spray assemblies (9) are distributed on the rainfall connecting rod frame. The model test box (1) is located directly below the rainfall connecting rod frame.

3. A landslide damage simulation test device according to claim 2, characterized in that: The spray assembly (9) comprises a pulley (11) and a spray nozzle (13); the pulley (11) is slidably arranged on a rainfall connecting rod frame, and buckles (12) are arranged on both sides of the pulley (11); the spray nozzle (13) is arranged on the pulley (11), and the input end of the spray nozzle (13) is connected to the water tank assembly via the pulley (11) and the rainfall connecting rod frame.

4. A landslide damage simulation test device according to claim 3, characterized in that: The water tank assembly comprises a rain gauge (6), a water pump (7) and a water tank (8); the output end of the water tank (8) is connected to the water pump (7), the output end of the water pump (7) is connected to the spray nozzle (13) via a rainfall connecting rod frame and a pulley (11), and the rain gauge (6) is arranged between the spray nozzle (13) and the water pump (7).

5. The landslide damage simulation test device according to claim 1, characterized in that: The hydraulic assembly comprises a hydraulic rod (20) and a hydraulic press (4); the hydraulic rod (20) is arranged on one side of the bottom of the model test box (1), and the driving end of the hydraulic rod (20) is connected to the hydraulic press (4).

6. A landslide damage simulation test device according to claim 1, characterized in that: A constant temperature support frame (19) is provided on the top of the model test box (1), and two ends of the constant temperature system (10) are respectively fixed on the constant temperature support frame (19) and are located directly above the test soil body (3).

7. A landslide damage simulation test device according to claim 6, characterized in that: The constant temperature system (10) comprises a constant temperature heating device (14), and a mounting groove (16) is provided on the constant temperature support frame (19). Both ends of the constant temperature heating device (14) are fixed to the mounting groove (16) by means of fixing buckles (15).

8. A landslide damage simulation test device according to claim 6, characterized in that: A stopper (18) is provided at the end of the model test box (1) for preventing the test soil (3) in the model test box (1) from sliding down.

9. A landslide damage simulation test device according to claim 1, characterized in that: A base (17) is provided in the rainfall frame (2), and the model test box (1) is placed on the base (17).

10. The landslide damage simulation test device according to claim 1, characterized in that: The four sides of the model test box (1) are made of transparent tempered glass, the bottom is made of a steel plate, and scale lines are provided on the side walls of the model test box (1). A pressure sensor, a moisture sensor, and a temperature sensor are buried in the test soil body (3).

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