CN212722513U - Rainfall simulation infiltration test device - Google Patents
Rainfall simulation infiltration test device Download PDFInfo
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- CN212722513U CN212722513U CN202020765239.9U CN202020765239U CN212722513U CN 212722513 U CN212722513 U CN 212722513U CN 202020765239 U CN202020765239 U CN 202020765239U CN 212722513 U CN212722513 U CN 212722513U
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Abstract
The utility model relates to a seepage flow technical field provides a rainfall simulation infiltration test device, including the rainfall system that is used for the rainfall simulation, be used for holding the earth pillar sample bottle of experimental soil and be used for the infiltration volume determine module that the rainfall of detection test soil infiltrates, still including the runoff volume determine module that is used for the detection test soil slope footpath flow and be used for collecting the rainfall infiltration volume with the data collection equipment of domatic runoff volume, have the first scale mark of laying along the direction of height of body on the earth pillar sample bottle. The utility model discloses a rainfall simulation infiltration test device not only can detect the data that the rainfall entered the infiltration volume, can also simulate out the slope of different surface soil layers through laying the scale mark on earth pillar sample bottle, and then gathers the data of different domatic runoff, and comprehensive test result can improve experimental accuracy.
Description
Technical Field
The utility model relates to a seepage flow technical field specifically is a rainfall simulation infiltration test device.
Background
With the rapid development of human socioeconomic, human engineering activities are more and more frequent, the scale of engineering construction is larger and larger, and the problem of side slopes becomes one of ten natural disasters in the world. The factors influencing the stability of the side slope are many, and the rainfall-induced slope seepage is a common factor influencing the stability of the side slope.
Rainfall infiltration is a complex process, and comprises various forms such as slope top infiltration, slope surface infiltration, along-the-fissure infiltration, soil body seepage under the gravity condition and the like. When the rainfall intensity is smaller than the soil body permeability coefficient of the side slope, the rainfall easily seeps into a soil body deep saturation area to directly supply underground water, the shallow soil body is difficult to reach higher saturation, and the slope body is in a stable state. When the rainfall intensity is greater than the infiltration rate of the side slope soil body, on one hand, the shallow layer of the side slope of the soil body is quickly saturated by rainwater, and the slope forms surface runoff to scour the slope; on the other hand, rainwater permeates into the interior of the slope body to cause the change of a seepage field, so that the dynamic water load and the static water load acting on the soil body are increased, the shear strength of the soil body is reduced, and the slope instability is caused. Therefore, it is necessary to research the slope stability under the rainfall infiltration condition, and the simulation of the rainfall infiltration process is inevitable in the research process.
However, most of the existing test devices only pay attention to the influence of rainfall infiltration amount on the slope, but various factors such as different rainfall degrees, different soil structures, different surface gradients and the like all affect the accuracy of the test, thereby causing incompleteness of the test result.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a rainfall simulation infiltration test device not only can detect the data that the rainfall entered the infiltration volume, can also simulate out the slope of different surface soil layers through laying the scale mark on earth pillar sample bottle, and then gather the data of the domatic runoff volume of difference, and comprehensive test result can improve experimental accuracy.
In order to achieve the above object, the embodiment of the present invention provides the following technical solutions: the utility model provides a rainfall simulation infiltration test device, is including the rainfall system that is used for the rainfall simulation, be used for holding the earth pillar sample bottle of experimental soil and be used for detecting the infiltration volume determine module of experimental soil rainfall infiltration volume, still includes the runoff determine module that is used for detecting experimental soil slope footpath flow and is used for collecting rainfall infiltration volume with the data collection equipment of domatic runoff, have the first scale mark of laying along the direction of height of body on the earth pillar sample bottle.
Further, the runoff detection assembly comprises a first electronic balance and a first water storage container arranged on the first electronic balance, the first water storage container is connected to the lower end of a soil slope in the soil column sample bottle through a first guide pipe, and the first electronic balance is connected with the data collection equipment through a first data line.
Further, the rainfall system comprises a mahalanobis bottle for containing test solution, a liquid storage bottle for storing the mahalanobis bottle and a plurality of injection needles, the liquid storage bottle is arranged right above the earth column sample bottle, each injection needle penetrates through the liquid storage bottle and the earth column sample bottle, and the liquid storage bottle is communicated with the mahalanobis bottle through a second conduit.
Further, a glass tube is arranged in the March bottle, and the liquid level of the test solution in the March bottle is not lower than the bottom port of the glass tube.
Furthermore, a second scale mark arranged along the height direction of the bottle body is arranged on the bottle body of the liquid storage bottle.
Furthermore, each syringe needle is detachably installed on the liquid storage bottle.
Further, the infiltration amount detection assembly comprises a plurality of TDR probes uniformly distributed along the height direction of the soil column sample bottle, one end of each TDR probe is inserted into the test soil in the soil column sample bottle, and the other end of each TDR probe is connected with the data collection equipment through a second data line.
The soil column sample bottle is characterized by further comprising a seepage water detection assembly for detecting seepage water, the bottom of the soil column sample bottle is provided with a seepage water section which is obliquely arranged, the seepage water section is separated from test soil in the soil column sample bottle through a reverse filtration layer, and a detection point of the seepage water detection assembly is arranged at the lower end of the oblique seepage water section.
Further, the seepage water detection assembly comprises a second electronic balance and a second water storage container arranged on the second electronic balance, the second water storage container is connected to the lower end of the seepage water section in an inclined mode through a third conduit, and the second electronic balance is connected with the data collection device through a third data line.
Furthermore, sand gravel is filled in the reverse filter layer, and the particle size of the sand gravel is between 5mm and 1 cm.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model provides a rainfall simulation infiltration test device, not only can detect the data that rainfall infiltration volume, can also simulate out the slope of different surface soil layers through laying the scale mark on earth pillar sample bottle, and then gather the data of different domatic runoff, comprehensive test result can improve experimental accuracy.
Drawings
Fig. 1 is a schematic view of a rainfall infiltration simulation test device provided in an embodiment of the present invention;
in the reference symbols: 1-a mahalanobis bottle; 2-liquid storage bottle; 23-second tick mark; 3-syringe needle; 4-a first reservoir; 5-a second reservoir; 6-earth pillar sample bottle; 61-first tick mark; 7-an inverted filter layer; 8-seepage water cross section; 9-a first electronic balance; 10-a second electronic balance; 11-a glass tube; 12-a first water outlet; 13-a second water outlet; 14-a first conduit; 15-a second conduit; 16-a third conduit; 17-a data collection device; an 18-TDR probe; 19-a first data line; 20-a second data line; 21-third data line.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1, an embodiment of the present invention provides a rainfall simulation infiltration test apparatus, including a rainfall system for simulating rainfall, a soil column sample bottle 6 for holding test soil, an infiltration amount detection component for detecting rainfall infiltration amount of the test soil, a runoff amount detection component for detecting a slope runoff amount of the test soil, and a data collection device 17 for collecting the rainfall infiltration amount and the slope runoff amount, the soil column sample bottle 6 is provided with a first scale mark 61 arranged along a height direction of a bottle body. In this embodiment, set up first scale mark 61 on the body of earth pillar sample bottle 6 for the tester is when doing the experiment, and the domatic adjustment with experimental soil is to required angle accurately, and then the runoff volume determine module of being convenient for reachs the data of experimental soil slope runoff volume, provides important parameter for the calculation in later stage, and then can improve experimental accuracy. The data collection device 17 is a collector commonly used in the art, and many documents or patent documents are disclosed, and how to collect the data transmitted by each component is not described in detail here. Preferably, the angle of the slope is controlled between 0 and 90 degrees. Preferably, when the mahalanobis bottle 1 is disposed, a small cylinder made of glass of an appropriate size is selected according to the actual test amount, and then the top of the small cylinder is sealed by a piston to ensure that the small cylinder is not affected by external factors.
The following are specific examples:
as an optimization scheme of the embodiment of the present invention, please refer to fig. 1, the runoff detecting assembly includes a first electronic balance 9 and a first water storage container 4 disposed on the first electronic balance 9, the first water storage container 4 is connected to the lower end of the soil slope in the soil column sample bottle 6 through a first conduit 14, and the first electronic balance 9 is connected to the data collecting device 17 through a first data line 19. In this embodiment, the runoff rate detecting assembly is refined by weighing the test solution flowing down from the slope surface through the first electronic balance 9, and collecting the flowing-down test solution by using the first water storage container 4, wherein the test solution does not penetrate into the test soil. For convenience of description, the lower end is defined as a first water outlet 12, and the test solution flows into the second conduit 15 from the first water outlet 12.
As an optimization scheme of the embodiment of the utility model, please refer to fig. 1, the rainfall system includes the mahalanobis bottle 1 that is used for splendid attire test solution, stores stock solution bottle 2 and a plurality of syringe needle 3 in the mahalanobis bottle 1, stock solution bottle 2 is installed directly over earth pillar sample bottle 6, each syringe needle 3 link up stock solution bottle 2 with earth pillar sample bottle 6, stock solution bottle 2 through second pipe 15 with mahalanobis bottle 1 intercommunication. In this embodiment, the rainfall system is actually an existing conventional rainfall mode which is also adopted, and mainly comprises three parts, wherein the first part is a mahalanobis bottle 1 for containing test solution, the second part is a liquid storage bottle 2 serving as a transition piece, and a plurality of injection needles 3 for simulating rainfall, and the difference is that the second scale mark 23 is arranged on the bottle body of the liquid storage bottle 2 to monitor the volume of the test solution, in the actual arrangement, the liquid storage bottle 2 is a glass cylinder with enough strength to store more test solution, in addition, the injection needles 3 are uniformly arranged, and preferably, the injection needles 3 are detachably arranged on the liquid storage bottle 2, so that a tester can replace the types of the injection needles 3 according to actual conditions, such as a fifth injection needle 3 or a seventh injection needle 3, and can simulate the rainfall strength to be 0.1-0.32 mm/min (6-19.2 mm/h) and 0.32-1.9 mm/min (19.2-114 mm/h). Preferably, adopt sealed glue sealed syringe needle 3 and the liquid storage bottle 2 between the clearance, avoid the weeping. Further preferably, a glass tube 11 is arranged in the mahalanobis bottle 1, and the liquid level of the test solution in the mahalanobis bottle 1 is not lower than the bottom port of the glass tube 11.
As an optimization scheme of the embodiment of the present invention, please refer to fig. 1, the infiltration amount detection assembly includes a plurality of TDR probes 18 uniformly arranged along the height direction of the soil column sample bottle 6, each of which one end of the TDR probes 18 is inserted into the test soil in the soil column sample bottle 6, and each of the other ends of the TDR probes 18 are connected to the data collecting device 17 through the second data line 20. In the present embodiment, the infiltration amount detection module is detailed, and is a detection mode commonly used in the art, specifically, it is a detection mode using the TDR probe 18, the detection of the TDR probe 18 is conventionally selected in the art, and it is also a conventional technology that the data is transmitted to the data collection device 17 through the second data line 20, and the detailed description is omitted here.
As an optimized scheme of this embodiment, please refer to fig. 1, the apparatus further includes a seepage water detection assembly for detecting seepage water, the bottom of the soil column sample bottle 6 is provided with a seepage water cross section 8 arranged obliquely, the seepage water cross section 8 is separated from the test soil in the soil column sample bottle 6 by a reverse filtration layer 7, and a detection point of the seepage water detection assembly is at a lower end of the oblique seepage water cross section 8. In this embodiment, in addition to the above-mentioned several data, the present device can also collect the data of the seepage water amount, so as to make the kind of the detection data of the present device more comprehensive, specifically, the seepage water detection assembly includes a second electronic balance 10 and a second water storage container 5 disposed on the second electronic balance 10, the second water storage container 5 is connected at the lower end of the inclined seepage water section 8 through a third conduit 16, and for convenience of description, the lower end is defined as a second water outlet 13, and the test solution flows into the third conduit 16 from the second water outlet 13. The second electronic balance 10 is connected to the data collecting device 17 through a third data line 21, the detection mode is the same as the above-mentioned runoff detection mode, the electronic balance is used for weighing, and then the data is transmitted to the data collecting device 17, which is not described herein again.
As an optimization scheme of this embodiment, please refer to fig. 1, sand gravel is filled in the reverse filtering layer 7, and the particle size of the sand gravel is between 5mm and 1 cm.
Before the test is started, the first water storage container and the second water storage container are respectively placed on the first electronic balance and the second electronic balance, the initial masses of the first water storage container and the second water storage container are respectively peeled and reset, and the mass m of the first electronic balance 9 under the initial condition is recorded1Controlling a single variable; a period of time t1The mass m of the second electronic balance 10 is then recorded2. The change of the infiltration amount with time is (m)2-m1)/t1。
Likewise, the mass m of the first electronic balance 9 in the initial condition is recorded3Controlling a single variable; a period of time t2After that, the mass m of the first electronic balance 9 is recorded4The change of the radial flow on the surface of the sample with time is (m)4-m3)/t2。
In the actual test process, different types of test soil can be used in the soil column sample bottle 6, different test solutions can be used in the March's bottle 1, and then different types of injection needles 3 are used in a matched manner to carry out various combinations to comprehensively test data under various conditions, so that the comprehensive test result can improve the test accuracy and reduce the error of a simulation test.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a rainfall simulation infiltration test device, is including the rainfall system that is used for the rainfall simulation, be used for holding the earth pillar sample bottle of experimental soil and be used for detecting the infiltration volume determine module of experimental soil rainfall infiltration volume, its characterized in that: the soil-slope runoff testing device is characterized by further comprising a runoff detecting assembly for detecting the runoff of the test soil slope and data collecting equipment for collecting the rainfall infiltration amount and the slope runoff, wherein the soil-column sample bottle is provided with a first scale mark arranged along the height direction of the bottle body.
2. The rainfall simulation infiltration test device of claim 1, wherein: the runoff detection assembly comprises a first electronic balance and a first water storage container arranged on the first electronic balance, the first water storage container is connected to the lower end of a soil slope in the soil column sample bottle through a first guide pipe, and the first electronic balance is connected with the data collection equipment through a first data line.
3. The rainfall simulation infiltration test device of claim 1, wherein: the rainfall system comprises a March bottle for containing test solution, a liquid storage bottle for storing the March bottle and a plurality of injection needles, the liquid storage bottle is arranged right above the earth column sample bottle, each injection needle penetrates through the liquid storage bottle and the earth column sample bottle, and the liquid storage bottle is communicated with the March bottle through a second conduit.
4. A simulated rainfall infiltration test device according to claim 3, wherein: the March's bottle is internally provided with a glass tube, and the liquid level of the test solution in the March's bottle is not lower than the bottom port of the glass tube.
5. A simulated rainfall infiltration test device according to claim 3, wherein: the bottle body of the liquid storage bottle is provided with second scale marks distributed along the height direction of the bottle body.
6. A simulated rainfall infiltration test device according to claim 3, wherein: each syringe needle detachably installs on the stock solution bottle.
7. The rainfall simulation infiltration test device of claim 1, wherein: the infiltration amount detection assembly comprises a plurality of TDR probes uniformly distributed along the height direction of the soil column sample bottle, one end of each TDR probe is inserted into test soil in the soil column sample bottle, and the other end of each TDR probe is connected with the data collection equipment through a second data line.
8. The rainfall simulation infiltration test device of claim 1, wherein: the soil column sample bottle is characterized by further comprising a seepage water detection assembly for detecting seepage water, the bottom of the soil column sample bottle is provided with a seepage water cross section which is obliquely arranged, the seepage water cross section is separated from test soil in the soil column sample bottle through a reverse filtration layer, and a detection point of the seepage water detection assembly is arranged at the lower end of the oblique seepage water cross section.
9. The rainfall simulation infiltration test device of claim 8, wherein: the seepage water detection assembly comprises a second electronic balance and a second water storage container arranged on the second electronic balance, the second water storage container is connected to the lower end of the seepage water section in an inclined mode through a third conduit, and the second electronic balance is connected with the data collection equipment through a third data line.
10. The rainfall simulation infiltration test device of claim 8, wherein: the reverse filter layer is filled with sand gravel, and the particle size of the sand gravel is between 5mm and 1 cm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020765239.9U CN212722513U (en) | 2020-05-11 | 2020-05-11 | Rainfall simulation infiltration test device |
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| CN202020765239.9U CN212722513U (en) | 2020-05-11 | 2020-05-11 | Rainfall simulation infiltration test device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116298207A (en) * | 2023-04-03 | 2023-06-23 | 水利部交通运输部国家能源局南京水利科学研究院 | Device and method for testing instability of slope with fissure under rainfall and groundwater level coupling |
| CN117686401A (en) * | 2023-12-07 | 2024-03-12 | 武汉大学 | Visual test device and method for simulating rainfall interval infiltration process |
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2020
- 2020-05-11 CN CN202020765239.9U patent/CN212722513U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116298207A (en) * | 2023-04-03 | 2023-06-23 | 水利部交通运输部国家能源局南京水利科学研究院 | Device and method for testing instability of slope with fissure under rainfall and groundwater level coupling |
| CN116298207B (en) * | 2023-04-03 | 2024-06-11 | 水利部交通运输部国家能源局南京水利科学研究院 | Device and method for testing instability of slope with fissure under rainfall and groundwater level coupling |
| CN117686401A (en) * | 2023-12-07 | 2024-03-12 | 武汉大学 | Visual test device and method for simulating rainfall interval infiltration process |
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Address after: 430090 No.269, Xingsan Road, Shamao street, Hannan District, Wuhan City, Hubei Province Patentee after: Hubei Construction Engineering Quality Supervision, inspection and Testing Center Co.,Ltd. Patentee after: Hubei Academy of Architectural Sciences and Design Co.,Ltd. Address before: 430090 No.269, Xingsan Road, Shamao street, Hannan District, Wuhan City, Hubei Province Patentee before: HUBEI PROVINCIAL CENTER FOR QUALITY SUPERVISION AD TEST OF CONSTRUCTION ENGINEERING Patentee before: Hubei Academy of Architectural Sciences and Design Co.,Ltd. |