Adjustable terrain waterside bank slope test device under simulated rainfall condition and method of adjustable terrain waterside bank slope test device

Abstract

The invention discloses an adjustable terrain waterside bank slope test device and method under a simulated rainfall condition. The adjustable terrain waterside bank slope test device comprises an adjustable terrain model, a simulated rainfall model and a rainwater collection model, the adjustable terrain model comprises a jack and a side slope model box, the side slope model box is arranged above the jack, the side slope model box comprises a simulated river bank and a trapezoidal slope body box, and the simulated rainfall model comprises a water supply tank, a booster pump, a water supply pipe, a rainfall sprayer and a support. The rainfall sprayer is arranged above the side slope model through a support, and the rainwater collection model comprises a rainwater collection pipe and a waste water cylinder. The device is simple in structure and convenient to operate, and can simulate field tests of slope stability of slopes in different terrains under rainfall conditions.

Description

Technical Field

[0001] The invention relates to the technical field of simulated slope, and in particular to a test device and method for an adjustable terrain waterside slope under simulated rainfall conditions. Background Art

[0002] Rainfall infiltration is an important cause of slope instability. A large number of slope instabilities occur during and after rainfall, especially in slopes near river banks, which are extremely harmful. Indoor model tests provide a simple and fast test method for studying the evolution and destruction mechanism of rainfall-induced landslides. In some current engineering examples, such research is relatively rare, especially in the field of model tests.

[0003] Therefore, the prior art needs to be further improved and perfected. The present invention has developed an adjustable terrain waterside slope test device and method under simulated rainfall conditions, which can directly simulate the influence of slope gradient on slope stability under rainfall conditions. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide an adjustable terrain waterside slope test device and method under simulated rainfall conditions. The device has a simple structure and is easy to operate, and can simulate field tests of slope stability of different terrain slopes under rainfall conditions.

[0005] The purpose of the present invention is achieved through the following technical solutions:

[0006] A test device and method for an adjustable terrain waterside slope under simulated rainfall conditions, mainly comprising an adjustable terrain model, a simulated rainfall model and a rainwater collection model; the adjustable terrain model comprises a jack and a slope model box, the slope model box contains a simulated river bank and a trapezoidal slope box, the slope model box is arranged above the jack, the simulated rainfall model comprises a water supply tank, a booster pump, a water supply pipe, a rainfall nozzle and a bracket, the rainfall nozzle is arranged above the slope model through the bracket, and the rainwater collection model is mainly a wastewater cylinder.

[0007] Furthermore, the number of the jacks is 25, and the height of each jack can be manually adjusted.

[0008] Furthermore, the bottom of the slope model box is made of semi-flexible material, and the slope model includes a slope body paved with test simulation materials.

[0009] Furthermore, the rainfall sprinkler head is provided with a plurality of detachable sprinkler heads.

[0010] Compared with the prior art, the present invention also has the following advantages:

[0011] 1. The adjustable terrain waterside slope test device under simulated rainfall conditions provided by the present invention has a simple structure, is easy to install, and is easy to operate. It can simulate field tests of waterside slope tests on different terrains under rainfall conditions, and can adjust the rainfall flow rate. The test results are of reference significance.

[0012] 2. The adjustable terrain waterside slope test device under simulated rainfall conditions provided by the present invention can control the angle of the simulated slope by adjusting the jack, thereby achieving the accuracy of the slope model rainfall test research. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic structural diagram of an adjustable terrain waterside slope test device under simulated rainfall conditions provided by the present invention.

[0014] Description of the reference numerals in the above drawings:

[0015] 11-slope model box, 12-simulated river bank, 13-jack, 21-water supply tank, 22-sprinkler, 23-water supply pipe, 24-boosting pump, 31-wastewater cylinder. Specific implementation method:

[0016] In order to make the purpose, technical solutions and advantages of the present invention more clear and explicit, the present invention is further described below with reference to the accompanying drawings and embodiments.

[0017] Embodiment 1: Combination Figure 1 As shown, this embodiment discloses an adjustable terrain waterside slope test device and method under simulated rainfall conditions, which mainly include the following specific steps:

[0018] Step S1: Slope construction: the soil retrieved from the site is sieved through a 2mm screen, the moisture content is adjusted, and then the soil is piled in the adjustable terrain model 1, and then the height of the jack is adjusted to set the slope.

[0019] Step S2: artificially simulate rainfall arrangement, control the rainfall amount by controlling the water pipe flow, and place a rain gauge in front of the slope to monitor the rainfall intensity of the test during the rainfall process.

[0020] Step S3: Before rainfall, slowly release water into the simulated river channel and let it stand for 2 hours to allow the water to fully infiltrate the soil and the water pressure in the slope to reach a balanced state.

[0020] Step S4: Start simulating rainfall, maintain the same rainfall intensity for 2 hours, and use a camera to continuously observe and record the soil pressure, pore water pressure, slope deformation and failure process and physical phenomena during the rainfall process.

[0021] As a preferred embodiment of the present invention, there are 20 nozzles 22, which are arranged in a 5×4 pattern to ensure uniform rainfall distribution.

[0022] As a preferred solution of the present invention, one side of the slope model box 11 in the length direction is an observation side, the observation side is made of a transparent material, and a grid is arranged on the observation side.

[0023] As a preferred embodiment of the present invention, the waste water barrel 31 is located on the right side of the simulated river bank 12 and is used to collect river water and rain water during the test.

[0024] As a preferred solution of the present invention, a rain gauge is placed above the platform of the trapezoidal slope to monitor the rainfall intensity of the test.

[0025] As a preferred solution of the present invention, the slope model box 11 is made of semi-flexible material, and the angle of the simulated slope can be controlled by adjusting the jack.

[0026] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A test device and method for adjustable terrain near waterside slope under simulated rainfall conditions, characterized in that: It includes an adjustable terrain model, a simulated rainfall model and a rainwater collection model; the adjustable terrain model includes a jack and a slope model box, the slope model box includes a simulated river bank and a trapezoidal slope box, the slope model box is arranged above the jack, the simulated rainfall model includes a water supply tank, a booster pump, a water supply pipe, a rainfall nozzle and a bracket, the rainfall nozzle is arranged above the slope model through the bracket, and the rainwater collection model includes a simulated river pipe and a wastewater tank.

2. The adjustable terrain waterside slope test device under simulated rainfall conditions according to claim 1 is characterized in that: The number of the jacks is 25, and the height of each jack can be adjusted manually.

3. The adjustable terrain waterside slope test device under simulated rainfall conditions according to claim 1 is characterized in that: The bottom of the slope model box is made of semi-flexible material, and the slope model comprises a slope body paved with test simulation materials.

4. The adjustable terrain waterside slope test device under simulated rainfall conditions according to claim 1 is characterized in that: The rainfall sprinkler is provided with a plurality of detachable sprinkler heads.

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