CN101877194B - Device for simulating thin runoff - Google Patents
Device for simulating thin runoff Download PDFInfo
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- CN101877194B CN101877194B CN2010102096532A CN201010209653A CN101877194B CN 101877194 B CN101877194 B CN 101877194B CN 2010102096532 A CN2010102096532 A CN 2010102096532A CN 201010209653 A CN201010209653 A CN 201010209653A CN 101877194 B CN101877194 B CN 101877194B
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- runoff
- energy dissipating
- thin
- room
- chute
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Abstract
The invention discloses a device for simulating thin runoff. The device consists of an energy dissipating room, a flow stabilizing room, a laminar flow groove and a discharge flow groove, wherein a front baffle plate and a back baffle plate are arranged in the energy dissipating room, the energy dissipating room and the flow stabilizing room are separated by the front baffle plate of the energy dissipating room, the flow stabilizing room and the laminar flow groove are separated by a front baffle plate the flow stabilizing room, and a splitter plate is arranged between the laminar flow groove and the discharge flow groove; and the bottom part of the front baffle plate of the energy dissipating room and the bottom part of the energy dissipating room both have a gap, and the front baffle plate of the flow stabilizing room is provided with a water outlet. The device can simulate the even thin runoff in a certain width, and simultaneously realize the adjustment of a flow rate of runoff in a certain range according to the experimental needs so as to provide a technical support for researching erosion and transport processes of the thin runoff and constructing a physical model of eroded slope soil.
Description
Technical field
The invention belongs to a kind of experimental provision of environment scientific research field, be specifically related to a kind of device of simulating thin runoff.
Background technology
Soil erosion is global great ecological environment problem, and the hillside fields farming is the major reason that causes soil erosion.The erosion caused by sloping surfaces its essence is the separation and the carrying of soil.Its major impetus is rainfall and runoff.Because the transporting capacity of rainfall is limited, erosion sediment is mainly flowed out domatic by the runoff carrying, and therefore, the erosion transportation of runoff is most important to the erosion caused by sloping surfaces process.Whether pool plume according to runoff, slope runoff can be divided into thin runoff and rill stream.Although the erosion that thin runoff causes is less usually, because the thin runoff distribution area is big, the silt of carrying but is the major part of the erosion caused by sloping surfaces, and therefore thin runoff being simulated is the basis that the research thin runoff corrodes and carry rule.
Two kinds of ways simulations of normal employing thin runoffs in the present domatic water erosion process research.A kind of is to utilize artificially-simulated rainfall to add permeable gauze pad and cover and eliminate raindrop impact effect simulation runoff domatic; Second kind is the direct modeling runoff.The runoff of first kind of simulated rainfall generation preferably corrodes, but operability is poor, and the general very difficult strike effect of rainfall to ground of eliminating fully of permeable covering, is difficult for simulating the runoff erosion of flow greatly simultaneously; Second method is simple, often is used to study runoff erosion dynamic process and feature, as the laboratory tank commonly used erosion experiment that discharges water.But when the simulation thin runoff, be difficult to realize the even of runoff, can't reach simulate effect.Particularly when needing the runoff broad of simulation, runoff often forms local uniform, whole uneven situation.
Summary of the invention
At above shortcomings part in the prior art, the technical problem to be solved in the present invention provides a kind of device that produces the even thin runoff of different flow, and its key is that thin runoff can both compare on certain width evenly.
The present invention is achieved in that
A kind of device of simulating thin runoff, described device is by energy dissipating chamber, plenum chamber, sheet chute and go out chute and form, there are former and later two baffle plates the energy dissipating chamber, energy dissipating chamber and plenum chamber separate by energy dissipating chamber front apron, plenum chamber and sheet chute separate by the plenum chamber front apron, sheet chute and go out to have between the chute spreader plate, there is a slit front apron bottom, energy dissipating chamber with at the bottom of the pond, energy dissipating chamber, on the plenum chamber front apron apopore is arranged, apopore is evenly distributed on the plenum chamber front apron by quincunx interleaving, and the length of sheet chute is no more than 20cm.
Further scheme is: described laminar flow slot length is 15cm.
Further scheme is: described apopore diameter is 5mm, and the center distance of apopore is 15mm.
Further scheme is: the semicircle tap hole that links together is side by side arranged on the described spreader plate.
Further scheme is: described tap hole diameter is 5mm.
The present invention has designed a kind of device of simulating thin runoff, and this device can hold certain runoff, and makes runoff through becoming uniform thin runoff under certain width behind this device.This device can directly connect the water source by pipeline.The device change enters runoff becomes even thin runoff, and dependable flow is identical with the flow that enters, and therefore by the flow of control entry, this device can produce the even thin runoff of different flow.Runoff at first enters the energy dissipating chamber of this device, owing to all stopped around the energy dissipating chamber by baffle plate, and slit outflow that can only be by narrow front apron bottom, energy dissipating chamber, so the kinetic energy of runoff is absorbed substantially, avoided the impact of runoff to cause the inhomogeneous of thin runoff.Runoff is constantly accumulated on one side in the energy dissipating chamber and is caused the water surface to rise, by slit slowly enter plenum chamber on one side, here runoff obtains further stable.Have uniform apopore on the plenum chamber front apron, the diameter of apopore is 5mm, and be distributed on the plenum chamber front apron by quincunx interleaving, the center distance in hole is 15mm, runoff by behind the plenum chamber with preliminary homogenising, the runoff that flows out from plenum chamber becomes thin runoff in the acceleration of sheet chute through a segment distance.The length of sheet chute can not be too big, otherwise can produce converging of runoff, influences its homogeneity, according to test repeatedly, when the laminar flow slot length below 20cm, runoff generally can not take place to converge, especially when the length of sheet chute is 15cm, directly distributions is very even.Thin runoff arrives spreader plate, shunts once more by the tap hole of spreader plate, realizes second homogenisation, produces even thin runoff at last and enters the experiment soil box.
By the present invention, can simulate even thin runoff, can realize the adjusting of runoff rate within the specific limits according to the test needs simultaneously with certain width, thereby be the erosion and the handling process of research thin runoff, make up the erosion caused by sloping surfaces soil physics model technical support is provided.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is a longitudinal diagram of the present invention;
Fig. 3 is the water outlet plate structure synoptic diagram of plenum chamber;
Fig. 4 is a spreader plate cross-sectional structure synoptic diagram.
Embodiment
The present invention is described further below in conjunction with accompanying drawing.
Shown in accompanying drawing 1,2,3, a kind of device of simulating thin runoff, by energy dissipating chamber 1, plenum chamber 2, sheet chute 3 and go out chute 4 and form, described energy dissipating chamber, plenum chamber, sheet chute and to go out the chute width identical; There are energy dissipating chamber front apron 6 and energy dissipating chamber backboard 5 in the energy dissipating chamber, energy dissipating chamber 1 separates by energy dissipating chamber front apron 6 with plenum chamber 2, plenum chamber 2 separates by plenum chamber front apron 7 with sheet chute 3, sheet chute 3 and go out a spreader plate 8 is arranged between the chute 4, there is a slit front apron bottom, energy dissipating chamber with at the bottom of the pond, energy dissipating chamber, apopore 9 is arranged on the plenum chamber front apron, apopore is evenly distributed on the plenum chamber front apron by quincunx interleaving, the length of sheet chute is 15cm, the laminar flow slot length is 15cm, the apopore diameter is 5mm, and the center distance of apopore is 15mm.
As shown in Figure 4, the semicircle tap hole 10 that links together is side by side arranged on spreader plate, the tap hole diameter is 5mm.
Claims (4)
1. device of simulating thin runoff, it is characterized in that described device is by the energy dissipating chamber, plenum chamber, sheet chute and go out chute and form, described energy dissipating chamber, plenum chamber, sheet chute and to go out the chute width identical, energy dissipating chamber and plenum chamber separate by energy dissipating chamber front apron, plenum chamber and sheet chute separate by the plenum chamber front apron, sheet chute and go out to have between the chute spreader plate, there is a slit front apron bottom, energy dissipating chamber with at the bottom of the pond, energy dissipating chamber, on the plenum chamber front apron apopore is arranged, apopore is evenly distributed on the plenum chamber front apron by quincunx interleaving, the length of sheet chute is no more than 20cm, described apopore diameter is 5mm, and the center distance of apopore is 15mm.
2. the device of simulation thin runoff according to claim 1 is characterized in that: described laminar flow slot length is 15cm.
3. according to the device of the described simulation thin runoff of the arbitrary claim of claim 1 to 2, it is characterized in that: the semicircle tap hole that links together is side by side arranged on the described spreader plate.
4. the device of simulation thin runoff according to claim 3 is characterized in that: described tap hole diameter is 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102096532A CN101877194B (en) | 2010-06-25 | 2010-06-25 | Device for simulating thin runoff |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102096532A CN101877194B (en) | 2010-06-25 | 2010-06-25 | Device for simulating thin runoff |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101877194A CN101877194A (en) | 2010-11-03 |
| CN101877194B true CN101877194B (en) | 2011-08-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102096532A Expired - Fee Related CN101877194B (en) | 2010-06-25 | 2010-06-25 | Device for simulating thin runoff |
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| Country | Link |
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| CN (1) | CN101877194B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966069B (en) * | 2012-11-16 | 2014-06-25 | 同济大学 | Testing apparatus for simulating effects of different forms and combinations of spur dikes on water flow and sediments |
| CN106324218B (en) * | 2016-08-24 | 2018-04-03 | 贵州师范大学 | A kind of uniform bypass channel of thin layer of the uniform water sand analogue means of thin layer |
| CN106226498B (en) * | 2016-08-24 | 2018-02-09 | 贵州师范大学 | A kind of uniform water sand analogue means of thin layer |
| CN106324219B (en) * | 2016-08-24 | 2018-04-13 | 贵州师范大学 | A kind of uniform water sand simulator of thin layer determines water level current stabilization case |
| CN110542752A (en) * | 2019-10-09 | 2019-12-06 | 中国科学院地理科学与资源研究所 | Slope runoff simulation device and using method thereof |
| CN114019144B (en) * | 2021-11-15 | 2023-11-21 | 西南大学 | Device and method for quantitatively distinguishing erosion amount of slope laminar flow and erosion amount of fine groove |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5279151A (en) * | 1991-11-12 | 1994-01-18 | Ptrl East, Inc. | Method and system for conducting meso-scale rainfall simulations and collecting runoff |
| US6945468B1 (en) * | 2003-02-20 | 2005-09-20 | Cipriano Rodriguez | Rainfall simulation apparatus |
| CN1250943C (en) * | 2003-11-05 | 2006-04-12 | 西南农业大学 | Natural dome soil and water losses monitoring system using nine pore bypass method |
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2010
- 2010-06-25 CN CN2010102096532A patent/CN101877194B/en not_active Expired - Fee Related
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| CN101877194A (en) | 2010-11-03 |
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Granted publication date: 20110831 Termination date: 20130625 |