CN214622628U - Soil pipeline flow erosion simulation test device - Google Patents
Soil pipeline flow erosion simulation test device Download PDFInfo
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- CN214622628U CN214622628U CN202120412759.6U CN202120412759U CN214622628U CN 214622628 U CN214622628 U CN 214622628U CN 202120412759 U CN202120412759 U CN 202120412759U CN 214622628 U CN214622628 U CN 214622628U
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Abstract
The embodiment of the application provides a soil pipeline flows and corrodes analogue test device, includes: a jack for adjusting the gradient is arranged below the soil tank, a drain hole for supplying water body infiltration and interflow is arranged at the bottom of the soil tank, the front end of the soil tank is also provided with a flow stabilizing groove for supplying surface runoff, the side edge of the soil tank is provided with a lateral opening for supplying soil pipeline flow, the water outlet of the soil tank consists of a surface runoff collecting device and an underground runoff collecting device, the baffle plate at the water outlet consists of a fixed baffle plate and a movable baffle plate, the fixed baffle is used for fixing soil body lower than the position of the soil pipeline, the movable baffle is used for fixing soil body higher than the position of the soil pipeline when the soil tank is filled, the movable baffle is taken out after the experiment begins and can be made the subsurface runoff flow along subsurface runoff collection device flow, and the influence of existence that this application can accurate simulation soil pipeline and soil pipeline flow to the erosion process.
Description
Technical Field
The application relates to the field of soil erosion experimental devices, in particular to a soil pipeline flow erosion simulation test device.
Background
Subsurface runoff separates soil particles by means of seepage and preferential flow, among other things, resulting in the occurrence of subsurface soil erosion. Soil pipe erosion is an important form of subsurface runoff erosion, and when the soil pipe flow shear force exceeds the critical shear stress for soil particle separation, soil particles inside the soil pipe are stripped off and cause enlargement of the soil pipe, and finally collapse at the top of the soil pipe and form subsidence features and channels. The typical soil pipe collapse characteristics observed worldwide are often precursors to trench characteristics, and soil pipe flow can cause rapid source-tracing processes at the trench head and trench wall collapse processes. However, due to invisibility of soil pipelines and soil pipeline flows, observation is difficult, and existing erosion process research usually only focuses on runoff erosion processes of the ground surface and ignores the runoff erosion processes. In addition, due to the difference of the flow characteristics of the surface runoff and the flow characteristics of the underground soil pipeline, the soil erosion caused by the soil pipeline flow is difficult to control by common water conservation measures aiming at the surface runoff. Therefore, it is necessary to develop a soil pipeline manufacturing and soil pipeline flow erosion simulation test device and method, which provide support for research on underground soil pipeline erosion.
Therefore, the inventor provides a soil pipeline flow erosion simulation test device by virtue of experience and practice of related industries for many years so as to overcome the defects in the prior art.
SUMMERY OF THE UTILITY MODEL
To the problem among the prior art, this application provides a soil pipeline flows and corrodes analogue test device, and the influence of existence that can be quick, accurate and convenient simulation soil pipeline and soil pipeline flow to the soil erosion process. Therefore, the problem that the contribution of the soil pipeline flow to the erosion cannot be quantitatively evaluated in the past is solved, and a scientific basis is provided for preventing and treating the soil erosion caused by the soil pipeline flow.
In order to solve the technical problem, the application provides the following technical scheme:
in a first aspect, the present application provides a soil pipeline flow erosion simulation test device, comprising:
the soil trough is characterized in that a jack used for adjusting the gradient is arranged below the soil trough, a drain hole used for supplying seepage and interflow under a water body of the soil trough is formed in the bottom of the soil trough, a flow stabilizing groove used for supplying surface runoff is further arranged at the front end of the soil trough, a lateral opening used for supplying soil pipeline flow is formed in the side edge of the soil trough, a water outlet of the soil trough is composed of a surface runoff collecting device and an underground runoff collecting device, a baffle at the water outlet is composed of a fixed baffle and a movable baffle, the fixed baffle is used for fixing soil bodies lower than the position of a soil pipeline, the movable baffle is used for fixing soil bodies higher than the position of the soil pipeline when the soil trough is filled, and the movable baffle is pulled out after an experiment begins and the interflow and the soil pipeline flow are collected by the underground runoff collecting device.
Furthermore, a sand layer with the thickness of 5cm is arranged on the lowermost layer of the soil tank, and a drainage hole is formed in the bottom of the sand layer and used for draining water or providing interflow.
Furthermore, a layer of gauze with high water permeability is placed on the sand layer and used for separating soil and sand.
Furthermore, a soil body with the thickness of 30cm is arranged in the soil tank.
Further, the soil body is filled in a layer every 5cm of thickness.
Furthermore, a soil pipeline is arranged at the depth of 10cm of the soil body, a metal hollow pipeline with the length of 2.5m and the outer diameter of 1.5cm is required to be used for manufacturing the soil pipeline, the metal hollow pipeline with the smooth surface is manufactured, a miniature camera is arranged inside a port, close to the top of the soil tank, of the metal pipeline, and the miniature camera is used for monitoring whether the soil pipeline with the inner diameter of 1.5cm formed when the metal pipeline is pulled out collapses or not.
Furthermore, the tail end of the soil pipeline of the metal pipeline extends out of a round hole with the diameter of 1.5cm on the movable baffle, and the round hole is used for keeping the metal pipeline drawn out at the same horizontal position.
Further, the tail end of the soil pipeline extends out of the position of the round hole in the movable baffle plate.
Furthermore, the soil pipeline is connected with an external water supply pipeline through a bending adapter, and the external water supply pipeline is used for providing simulated soil pipeline confluence for the soil pipeline.
Further, a drop sill with the height difference of 2cm is arranged on the surface of the soil body.
According to the technical scheme, the application provides a soil pipeline flows and corrodes analogue test device, and the influence of the existence of simulation soil pipeline and soil pipeline flow that can be quick, accurate and convenient to the erosion process. Therefore, the problem that the contribution of the soil pipeline flow to erosion cannot be quantitatively evaluated in the past is solved, and a scientific basis is provided for prevention and control of the underground soil pipeline flow.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a soil pipeline flow erosion simulation test device according to the present application.
[ description of symbols ]
Screw jack 2
Side opening 5
Surface runoff collecting device 6
Groundwater runoff collecting device 7
Fixed baffle 8
Moving baffle 9
Gauze: 13
Soil body: 14
A miniature camera: 15
External water supply pipe: 16
Step (4) of falling the threshold: 17
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
In consideration of the difference of the flow characteristics of the surface runoff and the flow of the underground soil pipeline in the prior art, the problem that the soil erosion caused by the soil pipeline flow is difficult to control by common water conservation measures aiming at the surface runoff. In order to quickly, accurately and conveniently simulate the influence of the existence of a soil pipeline and a soil pipeline flow on an erosion process, the application provides an embodiment of a soil pipeline flow erosion simulation test device, referring to fig. 1, in the embodiment, the soil pipeline flow erosion simulation test device specifically comprises a soil tank, a jack for adjusting the gradient is arranged below the soil tank, a drain hole for supplying subsurface runoff and water seepage of the soil tank is arranged at the bottom of the soil tank, a steady flow groove for supplying subsurface runoff is further arranged at the front end of the soil tank, a lateral opening for supplying the soil pipeline flow is arranged at the side edge of the soil tank, a water outlet of the soil tank consists of a subsurface runoff collecting device and an subsurface runoff collecting device, a baffle at the water outlet consists of a fixed baffle and a movable baffle, and the fixed baffle is used for fixing a soil body lower than the position of the soil pipeline, the movable baffle is used for fixing soil bodies higher than the position of the soil pipeline when the soil tank is filled.
From the above description, according to the soil pipeline erosion simulation test device provided by the embodiment of the application, the influence of the existence of the soil pipeline and the soil pipeline flow on the erosion process can be quickly, accurately and conveniently simulated. Therefore, the problem that the contribution of the soil pipeline flow to erosion cannot be quantitatively evaluated in the past is solved, and a scientific basis is provided for prevention and control of the underground soil pipeline flow.
In a preferred embodiment, a soil pipe without collapse is first made inside the soil body by using a metal pipe. The outer diameter of the metal pipeline is 1.5cm, namely the inner diameter of the soil pipeline is 1.5cm, and in the process of drawing out and manufacturing the soil pipeline, an endoscopic camera arranged in a port of the metal pipeline close to the top of the soil tank is required to check whether the formed soil pipeline collapses.
As a preferred embodiment, the test soil groove has a length of 2.5m, a width of 15cm and a depth of 45 cm.
In a preferred embodiment, the lowest layer of the soil tank is filled with sand 5cm, the bottom of the sand is provided with a drain hole for draining water or providing an underground flow, the upper layer of the sand is provided with a layer of high-permeability gauze for separating the soil and the sand, the soil body is 30cm deep, and a soil pipeline is positioned 10cm below the ground surface. In the soil filling process, one layer of soil is filled every 5cm, the surface of the soil body is plucked between every two layers to ensure the uniformity of the soil body, and the soil body is vibrated and compacted to the designed volume weight after filling.
As a preferred embodiment, when the soil is filled to a position 10cm away from the ground surface, a movable baffle is placed at the water outlet, a metal hollow pipeline with the length of 2.5m and the outer diameter of 1.5cm and smooth surface is placed on the surface of the soil, a miniature camera is arranged in a port of the pipeline close to the top of the soil tank and used for checking whether a soil pipeline without collapse is formed during manufacturing of the soil pipeline, and the tail end of the metal pipeline extends out of a round hole on the movable baffle. The metal pipeline is connected with an external water supply pipeline through a bending adapter, and the simulated soil pipeline confluence is provided for the manufactured soil pipeline. And then continuously filling soil on the metal pipeline, wherein the filling method is the same as the above, one layer of soil is filled every 5cm, and the soil is vibrated and compacted to the designed volume weight after filling. And finally, manufacturing a 2 cm-height difference drop sill on the surface of the soil body, and exploring the soil erosion process under the action of surface runoff and soil pipeline runoff.
As a preferable embodiment, after the soil is filled, the soil body is subjected to pre-rainfall treatment until the soil body is fully filled, the surface generates current, and then the soil is kept still for 12 hours to enable the soil moisture to be fully and freely infiltrated. After standing for a period of time, the metal pipeline is slowly drawn out, the condition of the inner wall of the pipeline recorded by the miniature camera in the port is observed in the drawing process, and after the metal pipeline is completely drawn out, a complete soil pipeline with the diameter of 1.5cm is formed.
As can be seen from the above, the present application can achieve at least the following technical effects:
1. the invention realizes the manufacture of the soil pipeline, verifies the formed pipeline without collapse characteristic by using the miniature camera arranged in the port, and can be used for simulating the influence of the soil pipeline and the soil pipeline flow on the erosion process.
2. The invention designs an erosion process simulation device and method under the combined action of surface runoff and underground soil pipeline flow, which can be used for quantitatively analyzing the influence of the surface runoff and the underground soil pipeline flow on an erosion process.
The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes and modifications that can be made by one skilled in the art without departing from the spirit and principles of the invention should fall within the protection scope of the invention.
Claims (10)
1. A soil pipeline flows erosion simulation test device which characterized in that includes: the soil trough is characterized in that a jack used for adjusting the gradient is arranged below the soil trough, a drain hole used for supplying seepage and interflow under a water body of the soil trough is formed in the bottom of the soil trough, a flow stabilizing groove used for supplying surface runoff is further arranged at the front end of the soil trough, a lateral opening used for supplying soil pipeline flow is formed in the side edge of the soil trough, a water outlet of the soil trough is composed of a surface runoff collecting device and an underground runoff collecting device, a baffle plate at the water outlet is composed of a fixed baffle plate and a movable baffle plate, the fixed baffle plate is used for fixing a soil body lower than the position of a soil pipeline, and the movable baffle plate is used for fixing a soil body higher than the position of the soil pipeline when the soil trough is filled.
2. The soil pipe flow erosion simulation test device of claim 1, wherein the lowermost layer of the soil tank is provided with a sand layer having a thickness of 5 cm.
3. The soil pipe flow erosion simulation test device of claim 2, wherein a layer of high permeability gauze is placed on the sand layer to separate the soil from the sand.
4. The soil pipe flow erosion simulation test device of claim 1, wherein a soil body with a thickness of 30cm is arranged in the soil tank.
5. The soil pipe flow erosion simulation test device of claim 4, wherein the soil mass is packed in one layer every 5cm of thickness.
6. The soil pipe flow erosion simulation test device of claim 5, wherein a soil pipe is provided at a depth of 10cm of the soil mass.
7. The soil pipe flow erosion simulation test device of claim 6, wherein a metal hollow pipe with a length of 2.5m and an outer diameter of 1.5cm and a smooth outer surface is required to be used for manufacturing the soil pipe, and a micro camera for monitoring whether the soil pipe with an inner diameter of 1.5cm formed when the metal pipe is pulled out is arranged inside a port of the metal pipe close to the top of the soil tank.
8. The soil pipe flow erosion simulation test device of claim 7, wherein the end of the metal pipe extends from a circular hole of 1.5cm in diameter on the moving baffle.
9. The soil pipe flow erosion simulation test device of claim 6, wherein said soil pipe is connected to an external water supply pipe through a curved transition port, said external water supply pipe being adapted to provide a simulated soil pipe confluence for said soil pipe.
10. The soil pipe flow erosion simulation test device of claim 4, wherein the soil body surface is provided with a 2cm step drop sill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120412759.6U CN214622628U (en) | 2021-02-24 | 2021-02-24 | Soil pipeline flow erosion simulation test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120412759.6U CN214622628U (en) | 2021-02-24 | 2021-02-24 | Soil pipeline flow erosion simulation test device |
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| Publication Number | Publication Date |
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| CN214622628U true CN214622628U (en) | 2021-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120412759.6U Active CN214622628U (en) | 2021-02-24 | 2021-02-24 | Soil pipeline flow erosion simulation test device |
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- 2021-02-24 CN CN202120412759.6U patent/CN214622628U/en active Active
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