CN2773685Y - Measurement groove for soil erosion amount on slope - Google Patents
Measurement groove for soil erosion amount on slope Download PDFInfo
- Publication number
- CN2773685Y CN2773685Y CN 200520055723 CN200520055723U CN2773685Y CN 2773685 Y CN2773685 Y CN 2773685Y CN 200520055723 CN200520055723 CN 200520055723 CN 200520055723 U CN200520055723 U CN 200520055723U CN 2773685 Y CN2773685 Y CN 2773685Y
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- China
- Prior art keywords
- soil erosion
- tank
- measuring
- erosion amount
- soil
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Abstract
The utility model relates to a measuring tank for soil erosion amount of slopes, which is composed of two stages of identical tank bodies which forms an upper and lower step stage difference. In the utility model, the length, the width and the depth of a tank cavity of each stage tank body respectively are between 300 cm and 400 cm, between 40 cm and 50 cm and between 50 cm and 80 cm, the stage difference of the upper tank and the lower tank is between 30 cm and 50 cm, the lower sides of the upper tank body and the lower tank body are respectively provided with water drainage holes, and each water drainage hole is provided with a plug used for plugging water. The measuring tank can be used for measuring and computing soil erosion amount of slopes according to a new method, the measuring tank is installed on a slope of which the soil erosion amount to be measured, the top part of the upper tank body is appressed with the slope for receiving water and sand, and the soil erosion amount can be computed according to the formula that Wt: Wt=WDm/BDm by the buffering sedimentation of the two stages of measuring tanks and through the measurement of the particle diameter of soil sample and the particle diameter of original soil sample before eroded. The utility model can overcome problems existing in traditional measuring methods of soil erosion amount of slopes and can reach the purpose of exact and fast measure.
Description
Technical field
The utility model relates to a kind of measuring flume that the slope soil erosion amount is measured that is used for.
Background technology
Water and soil conservation is the long-term and arduous ecological engineering of China.In order to prevent erosion, often need to measure the soil erosion amount of soil erosion in the research and production construction.Traditional slope soil erosion measuring method normally carries out in " sediment run-off field ".So-called " sediment run-off field " is to build the rectangle wall hurdle body of building certain area on domatic, and cutting off the rainwash of inside and outside, hurdle, and the place near the ground, centre of body of wall establishes an apopore below domatic, connects to introduce with pipeline and measures bucket." sediment run-off field " measure the slope runoff amount still can, but it is extremely inaccurate to be used for the mensuration of soil erosion amount.The subject matter of its existence is: (1) is built the hurdle wall and has been stirred the domatic soil body, has destroyed former domatic soil body state of nature; (2) intercepted by the wall hurdle, the domatic a large amount of runoffs of marge are not flowed through in the field, have greatly reduced former domatic run-off, and the slope erosion power difference that runoff produces is very big; (3) axial pencil water is after the quantity of sand and mud that osculum is discharged also is different from the sediment loss amount of domatic promotion.
The purpose of this utility model is a kind of measuring flume that is used for slope soil erosion measurement amount of design, utilize this measuring flume to survey the slope soil erosion amount by a kind of new method, to overcome traditional existing problem of slope soil erosion measuring method, reach more accurately and measure purpose easily.
The measuring flume that the utility model is designed, form by becoming the differential identical cell body of two-stage of upper and lower ladder, the length and width of the vallecular cavity of every grade of cell body, be respectively 300～400cm, 40～50cm, 50～80cm deeply, upper and lower groove is differential to be 30～50cm, downside at upper groove body and lower groove is respectively equipped with osculum, and each osculum is furnished with the embolism of a water blockoff.
This measuring flume is used for the measurement of slope soil erosion amount in following mode: measuring flume is installed in the domatic of soil erosion amount to be measured, it is domatic to receive water sand that the upper groove body top is close to, after the buffering precipitation of two-stage measuring flume, calculate soil erosion amount by the following method:
(1) soil sample of following groove deposition is done granularmetric analysis, determine the value D of its maximum particle diameter
m
(2) whole soil samples of last groove deposition are screened, count out particle diameter D greater than D
mThe general assembly (TW) W of whole soil grains
Dm
(3) get the preceding former soil sample of erosion and do granularmetric analysis, calculate particle diameter D greater than D
mThe shared number percent B of soil particle
Dm
With W
DmDivided by B
DmGet final product to such an extent that be etched the general assembly (TW) of soil.By formula promptly: W
t=W
Dm/ B
DmCalculate the general assembly (TW) that has been etched soil.
For when measuring, can all flow into lower groove after making the water of upper groove body full, two abutment walls of the upper groove body of described measuring flume and lower groove connection can slightly be increased, and form slightly high lock hurdle.
Osculum in that the downside of upper groove body and lower groove is provided with respectively is used for before beginning to measure the slope soil erosion amount ponding in the vallecular cavity being drained, and blocks osculum with the embolism of configuration then, can carry out slope soil erosion measurement amount.
This measuring flume can be used cement, metal, plastic or other material preparation or make up.
The utlity model has following technique effect:
(1) uses this measuring flume and the slope soil erosion amount is measured, can get rid of the domatic soil that domatic destruction and artificial interference cause and stir and the hydrological characteristics change by above-mentioned corresponding survey meter method; Measured value is subjected to the restriction of domatic area size less, can reflect the erosion condition of soil more truly;
(2) through the buffering of measuring flume two-stage precipitation, the sedimentation of most of soil erosion is in groove, and is few by the clay that spilling water is taken away for less domatic of soil clay particle content, can ignore;
(3) this measuring flume is used for the domatic measurement of water body swelling and subsiding zone, and is upper and lower when mobile at cell body when water level, can be directly used in to measure bank slope soil wave and wash in a pan the erosion amount;
(4) this measuring flume has simple in structurely, and cost is low, the corresponding easy advantage of measuring method.
Description of drawings
Fig. 1 is the structural representation of the designed measuring flume of the utility model.
Embodiment
As shown in Figure 1, this measuring flume constitutes upper and lower two-stage stepped appearance cell body by upper groove body 1 and lower groove 2, the length and width of the vallecular cavity of upper groove body 1 and lower groove 2, be respectively 300cm, 40,50cm deeply, upper and lower groove is differential to be 35cm, form slightly high lock hurdle 3 at two abutment walls of upper groove body and lower groove connection, upper and lower cell body downside at measuring flume has 3 osculums, the embolism 4 of a water blockoff of each osculum adapted.When the survey timing of carrying out the slope soil erosion amount, measuring flume is installed on measured soil erosion amount domatic, it is domatic to receive water sand that the upper groove body top is close to, after the buffering precipitation of two-stage measuring flume, by to the soil sample particle diameter of upper and lower groove deposition and the mensuration that corrodes preceding former soil sample particle diameter, can calculate soil erosion amount W as follows
t:
W
t＝W
Dm/B
Dm
In the formula, D
mBe the maximum particle diameter of following groove sedimentary soil, W
DmFor particle diameter D in whole soil of last groove deposition greater than D
mThe general assembly (TW) of whole soil particles, B
DmFor particle diameter D in the former soil sample before corroding greater than D
mThe shared number percent of soil particle.
Claims (2)
1. measuring flume that is used for the slope soil erosion measuration meter, it is characterized in that, this measuring flume is by becoming the differential identical cell body of two-stage of upper and lower ladder to form, the length and width of the vallecular cavity of every grade of cell body, be respectively 300～400cm, 40～50cm, 50～80cm deeply, upper and lower groove is differential to be 30～50cm, downside at upper groove body and lower groove is respectively equipped with osculum, and each osculum is furnished with the embolism of a water blockoff.
2. measuring flume according to claim 1 is characterized in that the upper groove body of described measuring flume and two abutment walls of lower groove connection slightly increase, and forms slightly high lock hurdle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520055723 CN2773685Y (en) | 2005-03-21 | 2005-03-21 | Measurement groove for soil erosion amount on slope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520055723 CN2773685Y (en) | 2005-03-21 | 2005-03-21 | Measurement groove for soil erosion amount on slope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2773685Y true CN2773685Y (en) | 2006-04-19 |
Family
ID=36708949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520055723 Expired - Fee Related CN2773685Y (en) | 2005-03-21 | 2005-03-21 | Measurement groove for soil erosion amount on slope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2773685Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101995377A (en) * | 2010-10-22 | 2011-03-30 | 中国科学院水利部成都山地灾害与环境研究所 | Observation subdistrict construction for researching gully head erosion and gully wall collapse |
| CN103743887A (en) * | 2014-01-20 | 2014-04-23 | 北京林业大学 | Portable field measurement device for slope runoff erosion |
| CN112147306A (en) * | 2020-10-16 | 2020-12-29 | 东北农业大学 | Automatic change device of measuring different slope sections soil erosion |
-
2005
- 2005-03-21 CN CN 200520055723 patent/CN2773685Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101995377A (en) * | 2010-10-22 | 2011-03-30 | 中国科学院水利部成都山地灾害与环境研究所 | Observation subdistrict construction for researching gully head erosion and gully wall collapse |
| CN103743887A (en) * | 2014-01-20 | 2014-04-23 | 北京林业大学 | Portable field measurement device for slope runoff erosion |
| CN103743887B (en) * | 2014-01-20 | 2015-07-15 | 北京林业大学 | Portable field measurement device for slope runoff erosion |
| CN112147306A (en) * | 2020-10-16 | 2020-12-29 | 东北农业大学 | Automatic change device of measuring different slope sections soil erosion |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060419 Termination date: 20140321 |