CN110716029A - Rainfall landslide model test system - Google Patents
Rainfall landslide model test system Download PDFInfo
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- CN110716029A CN110716029A CN201911038876.4A CN201911038876A CN110716029A CN 110716029 A CN110716029 A CN 110716029A CN 201911038876 A CN201911038876 A CN 201911038876A CN 110716029 A CN110716029 A CN 110716029A
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- 238000012360 testing method Methods 0.000 title claims abstract description 181
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 134
- 239000002689 soil Substances 0.000 claims abstract description 133
- 238000006073 displacement reaction Methods 0.000 claims abstract description 65
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 17
- 239000000243 solution Substances 0.000 claims description 13
- 238000002347 injection Methods 0.000 claims description 11
- 239000007924 injection Substances 0.000 claims description 11
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 claims description 10
- 229930006000 Sucrose Natural products 0.000 claims description 10
- 239000005720 sucrose Substances 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 239000005350 fused silica glass Substances 0.000 claims description 8
- 239000004576 sand Substances 0.000 claims description 8
- 238000007405 data analysis Methods 0.000 claims description 7
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- 239000008213 purified water Substances 0.000 claims description 3
- 238000005728 strengthening Methods 0.000 claims 1
- 238000004088 simulation Methods 0.000 abstract description 5
- 238000010276 construction Methods 0.000 abstract 1
- 230000005484 gravity Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
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- 239000005341 toughened glass Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 229910001622 calcium bromide Inorganic materials 0.000 description 1
- WGEFECGEFUFIQW-UHFFFAOYSA-L calcium dibromide Chemical compound [Ca+2].[Br-].[Br-] WGEFECGEFUFIQW-UHFFFAOYSA-L 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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Abstract
The invention relates to a rainfall landslide model test system which comprises a base, a test box, a reinforcing mechanism, an upper support and a pressing mechanism, wherein the test box is supported on the base and is provided with a containing chamber; the device comprises a containing chamber, a test box and a spraying device, wherein the containing chamber is internally provided with test soil, the test box comprises a first pressing plate, the pressing mechanism is used for pushing the first pressing plate to apply pressure to the test soil along the lateral direction, and the spraying device is used for spraying water to the test soil to simulate a rainfall scene; the test soil and the test box are respectively formed into a transparent structure. Through the experimental soil and the proof box of configuration transparent construction, make the internal pressure of experimental soil simulation actual soil through the mechanism of exerting pressure, through sprinkler simulation rainfall scene to make can observe the inside displacement condition of experimental soil.
Description
Technical Field
The invention belongs to the field of geotechnical engineering model tests, and particularly relates to a rainfall landslide model test system.
Background
According to statistics, rainfall is one of the most serious countries of landslide disasters, and is one of the main factors inducing landslide, and the influence of rainfall on the side slope is researched. Based on this, the inventors have proposed the present application.
Disclosure of Invention
The invention aims to provide a rainfall landslide model test system which is provided with test soil and a test box with a transparent structure, wherein the test soil simulates the internal pressure of actual soil through a pressure applying mechanism, and a rainfall scene is simulated through a spraying device, so that the displacement condition inside the test soil can be observed.
In a first aspect, the present invention provides a rainfall landslide model test system, which includes a base, a test chamber supported on the base and having a receiving chamber, a reinforcing mechanism supported on the base, an upper bracket supported on the reinforcing mechanism, and a pressing mechanism; the device comprises a containing chamber, a test box and a spraying device, wherein the containing chamber is internally provided with test soil, the test box comprises a first pressing plate, the pressing mechanism is used for pushing the first pressing plate to apply pressure to the test soil along the lateral direction, and the spraying device is used for spraying water to the test soil to simulate a rainfall scene; the test soil and the test box are respectively formed into a transparent structure.
Preferably, the system comprises a light source device, a shooting device and a data acquisition device; the test soil and the test box are respectively of a transparent structure, the light source device comprises a laser source and a filter, the filter converts light of the laser source into a surface light source and projects the surface light source onto the test soil, the shooting device is used for shooting displacement change of the test soil in the sprinkling process of the sprinkling device, and the data acquisition device comprises a displacement sensor, a pressure sensor and a osmometer which are arranged in the test soil; and the displacement sensor, the pressure sensor, the osmometer and the shooting device are respectively connected with a computer through electric signals.
Preferably, the reinforcing mechanism includes: the first frame is supported on the base and comprises a plurality of first supporting columns, and the first supporting columns are enclosed in a mode that the length direction of the first supporting columns extends in a direction parallel to the vertical direction or orthogonal to the vertical direction so as to be supported on the outer peripheral side of the test box; the second frame is supported on the base and comprises a plurality of second supporting columns; the second supporting columns are enclosed in a mode that the length direction of the second supporting columns extends parallel to the vertical direction or the other side orthogonal to the vertical direction so as to be supported on the outer peripheral side of the first frame; an observation port is formed in the first frame, and the shooting device is arranged corresponding to the direction of the observation port so as to obtain the displacement change of the test soil.
Preferably, the test soil is prepared from fused quartz sand and a sucrose solution; the particle diameter of the fused silica sand is 0.5-5mm, the concentration of the sucrose solution is 198-205g of sucrose per 100ml of purified water, so that the refractive index of the test soil is 1.333-1.504.
Preferably, the sprinkler device includes a plurality of sprinkler pipes having a plurality of water outlets and supported on the upper bracket, each of the sprinkler pipes is connected to a water source and provided with a pressure pump for adjusting a water pressure, wherein each of the sprinkler pipes is provided with a water switch for controlling a flow of water passing through the sprinkler pipe to be cut off.
Preferably, the or each sprinkler tube is rotatably supported on the upper bracket to adjust a sprinkler angle.
Preferably, the device comprises a water injection device and a water drainage device; the drainage device is provided with a drainage port which is arranged at the lower side of the test soil and is used for downwards draining seepage water; the water injection device is communicated with a water source and comprises a plurality of water outlets, and the water outlets are arranged at intervals along the vertical direction to inject water into the test soil at different depths so as to change the humidity of the test soil at different depths.
Preferably, each of the water outlets and the water outlets can be connected with a water guide pipe and embedded into the test soil, flow switches are respectively arranged on the water pipes on the water injection device for respectively communicating the water outlets and the water outlets, and each of the flow switches is used for adjusting the water output of each of the water outlets and the water outlets.
In a second aspect, the invention provides a rainfall landslide model test system, which can be executed with the following steps:
filling test soil into the test box, wherein the gradient of the test soil is 10-35 degrees;
the water sprinkling opening is opened through a pressure pump or a water sprinkling switch, and the water sprinkling pressure is adjusted through the pressure pump;
acquiring displacement data of the test soil at different positions, pressure data inside the test soil and water seepage pressure data of the test soil through the displacement sensor, the pressure sensor and the osmometer, and transmitting the displacement data, the pressure data and the water seepage pressure data to a computer for data analysis through electric signals;
acquiring a displacement change image of the test soil through a camera device, and transmitting the image to a computer through an electric signal for image analysis;
and analyzing the displacement data, the pressure data, the water seepage pressure data and the image through a computer.
In a third aspect, the invention provides a rainfall landslide model test system, which can be implemented with the following steps: filling test soil into the test box, wherein the gradient of the test soil is 10-35 degrees;
opening flow switches of the water outlet and the water outlet to inject water flow into the test soil through the water outlet and realize seepage of water in the test soil through the water outlet;
the water sprinkling opening is opened through a pressure pump or a water sprinkling switch, and the water sprinkling pressure is adjusted through the pressure pump;
acquiring displacement data of the test soil at different positions, pressure data inside the test soil and water seepage pressure data of the test soil through the displacement sensor, the pressure sensor and the osmometer, and transmitting the displacement data, the pressure data and the water seepage pressure data to a computer for data analysis through electric signals;
acquiring a displacement change image of the test soil through a camera device, and transmitting the image to a computer through an electric signal for image analysis;
and analyzing the displacement data, the pressure data, the water seepage pressure data and the image through a computer.
By adopting the technical scheme, the invention can obtain the following technical effects.
1. The rainfall landslide model test system provided by the invention is provided with test soil and a test box with a transparent structure, the test soil simulates the internal pressure of actual soil through a pressure applying mechanism, and a rainfall scene is simulated through a spraying device, so that the displacement condition in the test soil can be observed.
2. The invention provides a rainfall landslide model test system which comprises a light source device, a shooting device and a data acquisition device, wherein the light source device is used for shooting a rainfall landslide model; the light source device comprises a laser source and a filter, the filter converts light of the laser source into a surface light source and projects the surface light source onto test soil, the shooting device is used for shooting displacement change of the test soil in the sprinkling process of the sprinkling device, and the data acquisition device comprises a displacement sensor, a pressure sensor and an osmometer which are arranged in the test soil; the displacement sensor, the pressure sensor, the osmometer and the shooting device are respectively connected with a computer in an electric signal manner; through being provided with transparent proof box of shooting device cooperation and experimental soil, can observe the displacement change of experimental soil inside.
Drawings
Fig. 1 and 2 are schematic diagrams of the rainfall landslide model test system of the present invention viewed from different directions upwards.
Figure 3 depicts a schematic view of a sprinkler tube of the present invention.
Figure 4 depicts a schematic view of the test chamber, base and reinforcing mechanism of the present invention viewed from the upper side (i.e., vertically from top to bottom).
Fig. 5 is a schematic view of the rainfall landslide model test system of the present invention viewed from the top side.
Fig. 6 depicts a schematic view of the upper bracket of the present invention viewed from the upper side.
Fig. 7 depicts a schematic view of the upper brace of the present invention viewed from the side up.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "upper", "lower", "upper section", "lower section", "upper side", "lower side", "middle", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations and positional relationships indicated based on the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
The structure and function of the solution of the present application will now be described in detail with reference to fig. 1 to 7.
The invention provides a rainfall landslide model test system, which comprises a base 2, a test box 1 which is supported on the base 2 and is provided with a containing chamber 13, a reinforcing mechanism which is supported on the base 2, an upper bracket 5 which is supported on the reinforcing mechanism, and a pressure applying assembly, wherein the upper bracket 5 is connected with the pressure applying assembly through a connecting piece, and the pressure applying assembly is connected with the base 2 through a connecting piece. The rainfall landslide model test system further comprises a spraying device, test soil is contained in the containing chamber 13, the test box 1 comprises a first pressing plate 11, the pressing assembly is used for pushing the first pressing plate 11 to apply pressure to the test soil along the lateral direction, and the spraying device is used for spraying water to the test soil to simulate a rainfall scene; the test soil and the test chamber 1 are respectively formed in a transparent structure. Wherein, dispose transparent structure's experimental soil and proof box 1, make experimental soil to simulate the internal pressure of actual soil through the mechanism of exerting pressure, through sprinkler simulation rainfall scene to make and to observe the inside displacement condition of experimental soil. Therein, the first and second pressing plates 11 and 12 of the test chamber 1 are preferably made of transparent tempered glass.
In an embodiment of the present invention, the rainfall landslide model test system includes a light source device, a camera device and a data acquisition device (not shown). The test soil and the test box 1 are respectively of a transparent structure, the light source device comprises a laser source and a filter, the filter converts light of the laser source into a surface light source and projects the surface light source onto the test soil, the shooting device is used for shooting displacement change of the test soil in the sprinkling process of the sprinkling device, and the data acquisition device comprises a displacement sensor, a pressure sensor and a osmometer which are arranged in the test soil. And the displacement sensor, the pressure sensor, the osmometer and the shooting device are respectively connected with the computer B through electric signals.
Referring to fig. 1, 2, 4 and 5, the reinforcing mechanism includes a first frame 3 and a second frame supported on the base 2, the first frame 3 includes a plurality of first support columns 31, and the first support columns 31 are enclosed in such a manner that the length direction thereof extends in parallel to the vertical direction or in a direction orthogonal to the vertical direction, so as to be supported on the outer circumferential side of the test chamber 1. The second frame includes a plurality of second support columns 4, and the second support columns 4 are enclosed so that the longitudinal direction thereof extends in parallel to the vertical direction or orthogonal to the vertical direction, and are supported on the outer peripheral side of the first frame 3. An observation port 32 is formed in the first frame 3, and the shooting device is arranged corresponding to the direction of the observation port 32 to obtain the displacement change of the test soil.
Referring to fig. 2 and 4, the first frame 3 includes four reinforcing walls, and as viewed from top to bottom, the cross-section of each of the four reinforcing walls in the vertical direction is a quadrangular structure, each of the reinforcing walls includes two vertical first support columns 31 that are abutted against each other and fixedly connected together, each of the first support columns 31 is formed by a channel steel, and two adjacent first support columns 31 are fastened and connected by the side wall of the channel steel through fasteners such as screws or bolts. The two adjacent reinforcing walls are fixedly connected with each other through a right-angle connecting piece 55. Specifically, along the circumferential direction, two adjacent first support columns 31 are fixedly connected through a right-angle connecting piece 55 and a fastener such as a bolt.
In this embodiment, the second frame is supported on the base 2, and the second frame includes four reinforcing members, each of which is disposed corresponding to one of the reinforcing walls to support each of the reinforcing walls. Each reinforcing member includes a second supporting column 4 extending vertically along the length direction, and a plurality of the second supporting columns 4 are sequentially arranged along the extending direction array of the first supporting column 31. Wherein, the upper bracket 5 is fixedly connected with and supported on the second support column 4. Through supporting along vertical extension's second support column 4 can make the reinforced wall can not receive the gravity of upper bracket 5 to when solving reinforced wall and bearing gravity, dislocation can appear each other, slide when vertical first support column 31 can be because of gravity and proof box 1's power, thereby reach the purpose of better atress. In addition, in this embodiment, when viewed from the outer peripheral side of any reinforcing wall, one of the reinforcing members at least includes a second supporting column 4 located at one end of the first supporting column 31 and a second supporting column 4 located at the other end of one end of the first supporting column 31, and the second supporting column 4 is sandwiched between the base 2 and the upper bracket 5, so that when the first supporting column 31 is subjected to unbalanced force, the first supporting column is supported so that the two ends of the first supporting column in the length direction do not slide or shift. Preferably, the reinforcing component comprises three second supporting columns 4 which are arranged at equal intervals when viewed from the outer peripheral side of any reinforcing wall, so as to achieve the purpose of enabling the reinforcing wall to be stressed evenly and supporting the upper bracket 5 stably.
Referring to fig. 2, the observation port 32 is located between two adjacent second support columns 4, and on the first frame 3, the observation port 32 is configured with a plurality of observation ports in the up-down direction (i.e., vertical direction), so that observation from different positions can be performed. The observation ports 32 are formed in the two adjacent reinforced walls, so that the test soil at the same position can be observed from different angles, and the displacement of the test soil in a three-dimensional space can be observed. Preferably, each observation opening 32 is provided with an observation plate made of transparent tempered glass, so that the purpose of closing the test chamber 1 from the side is achieved when the observation purpose is achieved. Preferably, a waterproof gasket is disposed between the outer peripheral edge of the observation plate and the inner peripheral edge of the observation port 32.
The test soil is prepared from fused silica sand and a sucrose solution, the particle diameter of the fused silica sand is 0.5-5mm, the concentration of the sucrose solution is that 198-205g of sucrose is dissolved in every 100ml of purified water, and the refractive index of the test soil is 1.333-1.504. In other embodiments, the test soil is prepared from fused silica sand and calcium bromide solution, or amorphous silica powder and mineral oil, or amorphous silica powder, silica gel and brine. The test soil prepared from the fused quartz sand and the sucrose solution can overcome the defects that solutions in other preparation schemes are irritant, toxic or oily, and achieves the purpose of better simulating the properties of sandy soil by taking out the oily solution under the condition of ensuring safety.
Referring to fig. 3, the sprinkler includes a plurality of sprinkler pipes 8 supported on the upper bracket 5, each sprinkler pipe 8 having a plurality of sprinkler ports 81, each sprinkler pipe 8 being connected to a water source and provided with a pressure pump for adjusting a sprinkler pressure, wherein each sprinkler pipe 8 can be provided with a sprinkler switch for controlling a water flow passing through the sprinkler pipe to be cut off. Preferably, the sprinkler pipe 8 is integrally assembled and integrally mounted on the bracket and is supported on the upper bracket 5 in a manner rotatable with respect to the bracket. For example, it can be relatively rotated and can be relatively kept fixed by providing a rotating pin and a lock, or it can be supported on the upper bracket 5 by an air stay to adjust its angle with respect to the upper bracket 5, for example. Or, each sprinkler pipe 8 is supported on the upper bracket 5 in a manner of being capable of rotating relative to the bracket, so as to realize that the angle of each sprinkler pipe 8 relative to the upper bracket 5 is adjustable. Through the above, the angle of each water sprinkling opening 81 relative to the test soil (i.e., the angle of sprinkling water) is adjustable, so that the rainfall angle in different wind directions can be simulated.
In an embodiment of the present invention, referring to fig. 1 and 5, the rainfall landslide model test system includes a water injection device 7 and a water discharge device. The drainage device has a water outlet which is arranged at the lower side of the test soil and is used for discharging seepage water downwards, the water injection device 7 is communicated with a water source and comprises a plurality of water outlets, and the water outlets are arranged at intervals along the vertical direction (namely, the vertical direction) so as to inject water into the test soil at different depths, thereby achieving the purpose of changing the humidity of the test soil at different depths. The humidity of the test soil through changing the different degree of depth to realize the infiltration volume and the infiltration pressure of the soil of simulation different positions, be used for making its influence to the landslide that can simulate the soil of different humidity or degree of dryness, and, the soil of different humidity or degree of dryness, its influence to the landslide when raining. Wherein, the water injection device 7 comprises a plurality of sub-channels 71 with different heights, and each sub-channel 71 is connected with a hose or a copper pipe to be buried in the test soil. A water injection switch 72 is provided on each of the sub-passages 71 to open or close the corresponding sub-passage 71.
Preferably, each water outlet and each water outlet can be connected with a water guide pipe and embedded into the test soil, flow switches are respectively configured on the water pipes on the water injection device 7 for respectively communicating the water outlets and the water outlets, and each flow switch is used for adjusting the water output of each water outlet and the water outlet, so that the simulation of different scenes can be realized by rapidly changing the humidity and the water seepage pressure at different positions and different depths of the test soil.
In an embodiment of the present invention, referring to fig. 5, 6 and 7, the upper bracket 5 includes a plurality of cross beams 54, and a supporting plate assembly fixed on the cross beams 54, wherein the plurality of cross beams 54 are fixedly connected to each other. The support plate assembly comprises a first support plate 53 for supporting the vertical pressure loading mechanism 51, and a second support plate 52 for fixedly connecting the second frame. In this embodiment, the cross beams 54 are arranged at intervals in the vertical orthogonal direction, the first support plate 53 is sandwiched between two adjacent cross beams 54 to connect and fix the cross beams 54, and the second support plate 52 is fixed to the first support plate 53 or the cross beam 54 and extends downward to fix the upper end of the second frame, that is, fixed to the upper end of the second support column 4.
Preferably, the cross beam 54, the first support plate 53 and the second support plate 52 can be fixedly connected to each other through a right-angle connector 55, and the two first support columns 31 respectively located on two adjacent reinforced walls can be fixedly connected to each other through a right-angle connector 55.
In an embodiment of the present invention, the rainfall landslide model test system provided by the present invention can be implemented with the following steps:
s100, filling test soil into the test box 1, wherein the slope of the upper slope of the test soil is 10-35 degrees. Wherein the slope is preferably 10 ° to 35 °, and in other embodiments, it may be 10 ° to 60 °.
And S200, opening the water spraying port 81 through a pressure pump or a water spraying switch, and adjusting the water spraying pressure through the pressure pump. Wherein, through opening watering mouth 81 for the scene of raining simulates, wherein, can be through the angle of the relative upper bracket 5 of adjustment watering pipe 8 (and proof box 1), the angle of adjustment rainwash domatic, and regulate and control watering pressure through the force pump, with the scene of realizing different rains.
And S300, acquiring displacement data of the test soil at different positions, pressure data inside the test soil and water seepage pressure data of the test soil through the displacement sensor, the pressure sensor and the osmometer. And the displacement data, the pressure data and the water seepage pressure data are transmitted to a computer B for data analysis through electric signals. The displacement sensor, the pressure sensor and the osmometer are electrically connected with a computer B through cables, and control and data acquisition software, such as GDSLAB software, is installed in the computer B to acquire displacement data, pressure data inside the test soil and water seepage pressure data of the test soil and analyze the data.
And S400, acquiring a displacement change image of the test soil through a camera device, and transmitting the image to a computer B through an electric signal for image analysis. Wherein, the camera device is electrically connected to the computer B through a cable to transmit the captured image to the computer B, so as to realize the combined analysis of the displacement change image of the test soil and the data acquired in the step S300. The step S400 and any of the above steps may be executed simultaneously.
In an embodiment of the present invention, the rainfall landslide model test system provided by the present invention can be implemented with the following steps:
S100A, filling test soil into the test box 1, wherein the slope of the upper slope of the test soil is 10-35 degrees. Wherein the slope is preferably 10 ° to 35 °, and in other embodiments, it may be 10 ° to 60 °.
And S200A, opening flow switches of the water outlet and the water outlet to inject water flow into the test soil through the water outlet and realize seepage of water in the test soil through the water outlet. In step S200A, the displacement data of the test soil, the pressure data inside the test soil, and the water seepage pressure data of the test soil at different positions are obtained through the displacement sensor, the pressure sensor, and the osmometer, and the displacement data, the pressure data, and the water seepage pressure data are transmitted to the computer B for data analysis through electric signals. The displacement data, the pressure data and the water seepage pressure data in the step S200A are related data of the inside of the test soil before sprinkling water.
S300A, the water spraying opening 81 is opened through a pressure pump or a water spraying switch, and the water spraying pressure is adjusted through the pressure pump.
S400A, acquiring displacement data of the test soil at different positions, pressure data inside the test soil and water seepage pressure data of the test soil through the displacement sensor, the pressure sensor and the osmometer, and transmitting the displacement data, the pressure data and the water seepage pressure data to the computer B for data analysis through electric signals. The displacement data, the pressure data and the water seepage pressure data in step S400A are related data of the inside of the test soil during the process of the sprinkler pipe 8.
And S500A, acquiring a displacement change image of the test soil through the camera device, and transmitting the image to the computer B through an electric signal for image analysis. The displacement change image includes the displacement change in step S200A and the displacement change in step S500A, and the influence of the related actions in steps S100A and S200A on the test data acquired in step S400A can be acquired through the two displacement changes, so that a tester can adjust parameters to simulate an actual scene more accurately.
And S600A, analyzing the displacement data, the pressure data, the seepage water pressure data and the image through the computer B. The displacement sensor, the pressure sensor and the osmometer are electrically connected with a computer B through cables, and control and data acquisition software, such as GDSLAB software, is installed in the computer B to acquire displacement data, pressure data inside the test soil, water seepage pressure data of the test soil and displacement change images and analyze the data and the images.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A rainfall landslide model test system comprises a base, a test box, a reinforcing mechanism, an upper support and a pressing mechanism, wherein the test box is supported on the base and is provided with a containing chamber; the device is characterized by further comprising a spraying device, test soil is contained in the containing chamber, the test box comprises a first pressing plate, the pressing mechanism is used for pushing the first pressing plate to apply pressure to the test soil along the lateral direction, and the spraying device is used for spraying water to the test soil to simulate a rainfall scene; the test soil and the test box are respectively formed into a transparent structure.
2. The rainfall landslide model test system of claim 1, comprising a light source device, a camera device and a data acquisition device; the light source device comprises a laser source and a filter, the filter converts light of the laser source into a surface light source and projects the surface light source onto test soil, the shooting device is used for shooting displacement change of the test soil in the sprinkling process of the sprinkling device, and the data acquisition device comprises a displacement sensor, a pressure sensor and an osmometer which are arranged in the test soil; and the displacement sensor, the pressure sensor, the osmometer and the shooting device are respectively connected with a computer through electric signals.
3. The rainfall landslide model testing system of claim 2, wherein said strengthening mechanism comprises:
the first frame is supported on the base and comprises a plurality of first supporting columns, and the first supporting columns are enclosed in a mode that the length direction of the first supporting columns extends in a direction parallel to the vertical direction or orthogonal to the vertical direction so as to be supported on the outer peripheral side of the test box; and
the second frame is supported on the base and comprises a plurality of second supporting columns; the second supporting columns are enclosed in a mode that the length direction of the second supporting columns extends parallel to the vertical direction or the other side orthogonal to the vertical direction so as to be supported on the outer peripheral side of the first frame;
an observation port is formed in the first frame, and the shooting device is arranged corresponding to the direction of the observation port so as to obtain the displacement change of the test soil.
4. The rainfall landslide model test system of claim 3, wherein the test soil is configured from fused silica sand and sucrose solution;
the particle diameter of the fused silica sand is 0.5-5mm, the concentration of the sucrose solution is 198-205g of sucrose per 100ml of purified water, so that the refractive index of the test soil is 1.333-1.504.
5. The rainfall landslide model testing system of claim 4 wherein said sprinkler comprises a plurality of sprinkler tubes having a plurality of sprinkler ports for supporting on an upper support, each of said sprinkler tubes being separately connected to a water source and configured with a pressure pump for adjusting a pressure of the sprinkler, wherein each of said sprinkler tubes is configured with a sprinkler switch for controlling the flow of water through the sprinkler tube that interrupts the flow of water.
6. A rainfall landslide model test system as claimed in claim 5 wherein the or each sprinkler is rotatably supported on an upper support to adjust the angle of the sprinkler.
7. The rainfall landslide model test system of any one of claims 1 to 6, comprising a water injection device and a water drainage device; the drainage device is provided with a drainage port which is arranged at the lower side of the test soil and is used for downwards draining seepage water; the water injection device is communicated with a water source and comprises a plurality of water outlets, and the water outlets are arranged at intervals along the vertical direction to inject water into the test soil at different depths so as to change the humidity of the test soil at different depths.
8. The rainfall landslide model test system of claim 7, wherein each of the water outlets and outlets can be connected with a water conduit and embedded in the test soil, the water conduit of the water injection device for respectively communicating the water outlets and outlets is respectively provided with a flow switch, and each of the flow switches is used for adjusting the water output of each of the water outlets and outlets.
9. A rainfall landslide model test system as claimed in claim 8, wherein the test system is capable of performing the steps of:
filling test soil into the test box, wherein the gradient of the test soil is 10-35 degrees;
the water sprinkling opening is opened through a pressure pump or a water sprinkling switch, and the water sprinkling pressure is adjusted through the pressure pump;
acquiring displacement data of the test soil at different positions, pressure data inside the test soil and water seepage pressure data of the test soil through the displacement sensor, the pressure sensor and the osmometer, and transmitting the displacement data, the pressure data and the water seepage pressure data to a computer for data analysis through electric signals;
acquiring a displacement change image of the test soil through a camera device, and transmitting the image to a computer through an electric signal for image analysis;
and analyzing the displacement data, the pressure data, the water seepage pressure data and the image through a computer.
10. A rainfall landslide model test system as claimed in claim 8, wherein the test system is capable of performing the steps of:
filling test soil into the test box, wherein the gradient of the test soil is 10-35 degrees;
opening flow switches of the water outlet and the water outlet to inject water flow into the test soil through the water outlet and realize seepage of water in the test soil through the water outlet;
the water sprinkling opening is opened through a pressure pump or a water sprinkling switch, and the water sprinkling pressure is adjusted through the pressure pump;
acquiring displacement data of the test soil at different positions, pressure data inside the test soil and water seepage pressure data of the test soil through the displacement sensor, the pressure sensor and the osmometer, and transmitting the displacement data, the pressure data and the water seepage pressure data to a computer for data analysis through electric signals;
acquiring a displacement change image of the test soil through a camera device, and transmitting the image to a computer through an electric signal for image analysis;
and analyzing the displacement data, the pressure data, the water seepage pressure data and the image through a computer.
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