CN105938075A - In-situ test device for measuring anti-scouring performance of soil and vegetation - Google Patents
In-situ test device for measuring anti-scouring performance of soil and vegetation Download PDFInfo
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- CN105938075A CN105938075A CN201610513146.5A CN201610513146A CN105938075A CN 105938075 A CN105938075 A CN 105938075A CN 201610513146 A CN201610513146 A CN 201610513146A CN 105938075 A CN105938075 A CN 105938075A
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- section
- flow channel
- impact
- soil
- vegetation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/56—Investigating resistance to wear or abrasion
- G01N3/567—Investigating resistance to wear or abrasion by submitting the specimen to the action of a fluid or of a fluidised material, e.g. cavitation, jet abrasion
Abstract
The invention relates to the field of tests of anti-scouring performance of soil and vegetation, and discloses an in-situ test device for measuring the anti-scouring performance of soil and vegetation. The device comprises an annular test plate provided with an annular runner with an opened upper end. The annular test plate is in an annular shape. The annular runner comprises a driving runner section and an anti-scouring runner section. A power element, which is used to drive water flow to circularly move in the annular runner, is arranged in the driving runner section. A through groove is arranged on the bottom of the anti-scouring runner section. A Pitot tube for measuring the anti-scouring flow speed of soil and vegetation is arranged in the through groove. Compared with the prior art, the device has the advantages that the original soil and vegetation do not need to be sampled, transported, or preserved; the soil and vegetation can be arranged in the through groove in the bottom of the anti-scouring runner section of the annular runner, then the power element in the driving runner section drives water flow to circularly move in the annular runner, the Pitot tube in the through groove can measure the anti-scouring flow speed of soil and vegetation; the measurement is carried out on site, the sampling of original soil and vegetation is not needed, and the results of anti-souring flow speed are more accurate.
Description
Technical field
The present invention relates to soil and vegetation impact resistance field tests, especially soil and vegetation impact resistance are surveyed
The in-situ test device of examination.
Background technology
Vegetation is the important barrier of water and soil conservation and bank stability protection against erosion.
The impact resistance of soil and vegetation is the works such as dredging waterway, levee bank protection, submerged tunnel, water and soil conservation
The index that journey is paid close attention to, typically equal washing away along with river course bed surface during the water delivery or flood passage in river course,
Easily cause riverbed draws deep or incision phenomenon, affects stablizing of hydraulic structure and embankment itself, particularly exists
The engineering section that tunnel passes from river bed, excessive scour depth possibly even causes the safety that submerged tunnel runs
Accident, to this end, the impact resistance of the soil body is particularly important.
In existing technology, original-state soil and vegetation sampling complexity, special sampling equipment need to be used to take
Sample, after having sampled, the storage and transport cumbersome of sample, it is sometimes desirable to trudge and send test back to
Room carries out performance test, and sample segment is relatively big by many such environmental effects due to performance, need to take strict
Storage and transport mode, practical operation is the most difficult, and, sample is through the friction of extraction process, transport
The impacts such as the air air slaking after the vibration of process and preservation, its anti-impact flow velocity very likely changes so that
The accuracy of anti-impact flow-speed measurement result reduces.
Summary of the invention
It is an object of the invention to provide soil and the in-situ test device of vegetation impact resistance test, it is intended to solve
Certainly original-state soil and vegetation sampling trouble, sample transport and preservation difficulty in prior art, and, sample warp
The impacts such as the air air slaking after crossing the friction of extraction process, the vibration of transportation and preserving so that anti-impact stream
The problem that the accuracy of speed measurement result reduces.
The present invention is achieved in that soil and the in-situ test device of vegetation impact resistance test, including setting
There are the ring test plate of the annular channel of upper end open, described ring test plate shape ringwise, described annular flow
Road has driving flow channel section and anti-impact flow channel section, and described driving flow channel section is provided with promotion current at described annular flow
The dynamical element of road internal circulation flow, the bottom of described anti-impact flow channel section is provided with groove, is provided with in described groove
Measure soil and the Pitot tube of vegetation anti-impact flow velocity.
Further, described driving flow channel section and described anti-impact flow channel section are that straight channel shape is arranged, and described in drive
It is dynamic that flow channel section is parallel with described anti-impact flow channel section is arranged side by side；Described annular channel includes two curved flow channel section,
Described driving flow channel section is connected by described curved flow channel section with described anti-impact flow channel section, described driving flow channel section,
Two curved flow channel section and anti-impact flow channel section enclose the annular annular channel of formation.
Further, being provided with demarcation strip in described curved flow channel section, described demarcation strip is curved along described curved flow channel section
Qu Fangxiang is disposed to extend, and described curved flow channel section is divided into two parallel sub-runners by described demarcation strip.
Further, described curved flow channel section is divided into two wide sub-runners by described demarcation strip.
Further, the width of flow path of described anti-impact flow channel section is less than the width of flow path of described curved flow channel section.
Further, described dynamical element is impeller, and described impeller is located at the porch of described sub-runner.
Further, described ring test plate includes driving section, anti-impact section and two bending sections, described in drive
Dynamic section is parallel with described anti-impact section is arranged side by side, and two sections of a described bending section are connected to described driving
One end of section and one end of described anti-impact section, the two ends of another described bending section are connected to described driving
The other end of section and the other end of described anti-impact section, described driving section, anti-impact section and two bending sections enclose
Form described annular ring test plate；Described driving flow channel section is arranged in described driving section, described anti-
Rushing flow channel section to be arranged in described anti-impact section, described curved flow channel section is arranged in described bending section.
Further, it is provided with bottom described anti-impact section and extends down and for the leakproof inserting in soil and vegetation
Plate, described Antileaking plate is arranged along the surrounding cincture of described groove.
Further, described driving section is provided with leakproof cushion rubber, described anti-impact section with the junction of described bending section
It is provided with leakproof cushion rubber with the junction of described bending section.
Further, it is characterised in that the upper end of described ring test plate is provided with for covering described annular flow
The protection cap of the upper end open in road, described protection cap shape ringwise.
Compared with prior art, the soil of present invention offer and the in-situ test device of vegetation impact resistance test,
Need not original-state soil and vegetation are sampled, transport and preserve, ring test plate sets the ring of upper end open
Shape runner, is provided with groove, soil and vegetation bottom annular channel anti-impact flow channel section and is in groove, by driving
The dynamical element of dynamic flow channel section promotes current at annular channel internal circulation flow, utilizes the Pitot tube in groove to survey
Amount soil and the anti-impact flow velocity of vegetation, the mode of this field survey, it is not necessary to original-state soil and vegetation are entered
Row sampling, will not produce disturbance to original state sample, and anti-impact flow-speed measurement result is more accurate.
Accompanying drawing explanation
The knot of the in-situ test device of soil that Fig. 1 provides for the embodiment of the present invention and the test of vegetation impact resistance
Structure schematic diagram；
The soil added a cover and the in-situ test of vegetation impact resistance test that Fig. 2 provides for the embodiment of the present invention fill
The structural representation put.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and reality
Execute example, the present invention is further elaborated.Only should be appreciated that specific embodiment described herein
Only in order to explain the present invention, it is not intended to limit the present invention.
Below in conjunction with specific embodiment, the realization of the present invention is described in detail.
With reference to shown in Fig. 1 and Fig. 2, for the preferred embodiment of present invention offer.
The soil of the present embodiment offer and the in-situ test device of vegetation impact resistance test, can be used in river
In the engineerings such as road regulation, levee bank protection, submerged tunnel, water and soil conservation, it is not limited only to a certain kind.
The soil of the present embodiment offer and the in-situ test device of vegetation impact resistance test, including being provided with upper end
The ring test plate of the annular channel of opening, ring test plate shape ringwise, annular channel has driving runner
Section and anti-impact flow channel section, drive flow channel section to be provided with the dynamical element promoting current at annular channel internal circulation flow
121, the bottom of anti-impact flow channel section is provided with groove 111, is provided with measurement soil and vegetation anti-impact stream in groove 111
The Pitot tube 112 of speed.
Specifically, being provided with the annular channel of opening in the upper end of ring test plate, annular channel is for for current
Flowing, when testing, ring test plate is positioned over and needs, at soil and the vegetation of test, to allow soil
Earth and vegetation are emerging in groove 111, and groove 111 is located in ring test plate anti-impact flow channel section, by driving
Dynamical element 121 in dynamic flow channel section promotes current shuttling movement in annular channel, and current do shuttling movement,
The soil at groove 111 and vegetation can be flowed through, Pitot tube 112, Pitot tube 112 are set in groove 111
Be a kind of borrow the difference measuring fluid gross pressure and static pressure to calculate the instrument of flow velocity, with Pitot tube 112
Measure anti-impact flow velocity, thus draw soil and the impact resistance of vegetation at test.
The soil of above-mentioned offer and the in-situ test device of vegetation impact resistance test, can be the most real
Ground test, it is not necessary to be sampled original-state soil and vegetation, sample transports also without experience and preserves
Process, so, the air after not havinging the friction of sample extraction process, the vibration of transportation and preserving
The situations such as air slaking, are conducive to improving the accuracy of anti-impact flow-speed measurement result.
Annular channel also includes two curved flow channel section, and curved flow channel section is that curved runner shape is arranged, drives flow channel section
Being all to arrange in straight channel shape with anti-impact flow channel section, in straight channel, flow rate of water flow is mild, current stream in curved runner
Speed is more rapid；Drive that flow channel section is parallel with anti-impact flow channel section is arranged side by side, and in the middle of both, leave sky
Gap, drives flow channel section to be connected with anti-impact flow channel section section by two curved runners, i.e. two curved flow channel section, drives
Dynamic flow channel section and anti-impact flow channel section enclose one complete annular channel of formation so that current can be in annular
Runner internal circulation flow.
When current flow into bend from straight way, due to effect of inertia, can continue to keep straight in bend, and knock
Bend wall, the most not only can make the number of dropouts of water increase, and also bend wall can be produced lasting impact and pat,
And, the flow velocity of water is the fastest, and the dynamics that impact is patted is the most violent, thus reduces the service life of bend wall,
In the present embodiment, in curved flow channel section, it is provided with demarcation strip 131, and demarcation strip 131 is along the bending of curved flow channel section
Direction is disposed to extend, and curved flow channel section is divided into two sub-runners 132, two shuntings by such demarcation strip 131
Road 132 is parallel, when current enter curved flow channel section, by arranging two sub-runners 132, carries out current
Shunting, thus slow down the flow velocity of current, guide water flow stationary to pass through bend.
Specifically, demarcation strip 131 is located at the center in bend, and so, demarcation strip 131 is by curved runner
Section is divided into two wide sub-runners 132, two wide sub-runners 132 can shunting effective to current,
Thus guide water flow stationary to pass through bend.
For soil and the impact resistance of vegetation at preferably testing experiment, in the anti-impact flow channel section of annular channel,
Design allows current heavy caliber flow into, small-bore outflow, thus spontaneously forms one stream of water impulsive force, it is achieved right
Soil and the impact of vegetation, specifically, the sub-runner 132 in curved flow channel section exports meet by width of flow path
It is gradually reduced so that the width of flow path of anti-impact flow channel section is less than the width of flow path of curved flow channel section, the current converged
When flowing through the runner being gradually reduced, impulsive force is gradually increased, and reaches maximum when entering straight way, now, and current pair
The impact of soil and vegetation is the biggest, is more beneficial for measuring anti-impact flow velocity, thus testing soil and vegetation is anti-
Rush ability.
In the present embodiment, the dynamical element 121121 of annular channel is impeller, and specifically, impeller is arranged
Driving flow channel section, and in the porch of curved flow channel section sub-runner 132, by impeller, current are being applied
Thrust, makes current pass through curved flow channel section, and shuttling movement in annular channel, by executing impeller
Add different thrust, thus change the flow velocity of current, and then change current are to soil and the impulsive force of vegetation,
Wash away disconnected element structure according to difference, acted on the size of impeller lifting force by change, can adjust greatly
Joint experimental flow rate span of control, is applicable to the impact resistance of test different types sample, and the suitability is strong, and
Easily operated.
In the present embodiment, ring test plate includes driving section 12, anti-impact section 11 and two bending sections 13,
Driving flow channel section to be arranged in driving section 12, anti-impact flow channel section is arranged in anti-impact section 11, and curved flow channel section sets
Put in bending section 13；Drive that section 12 is parallel with anti-impact section 11 is arranged side by side, by two bending sections 13
Connecting, specifically, two sections of a bending section 13 are connected to drive one end and the anti-impact section 11 of section 12
One end, the two ends of another bending section 13 are connected to drive the other end of section 12 and anti-impact section 11
The other end, i.e. drive section 12, anti-impact section 11 and two bending sections 13 to enclose the annular annular of formation
Bread board, annular channel is arranged on ring test plate, can preferably allow current circulate in annular channel
Flowing.
Being provided with Antileaking plate 113 bottom anti-impact section 11, Antileaking plate 113 is arranged along the surrounding cincture of groove 111,
And downwardly extend in insertion soil and vegetation.It is provided with Antileaking plate 113 at ring test plate groove 111, by
In flowing water, there is the strongest mobility, when Antileaking plate 113 mainly avoids current to flow through groove 111, can be to
The surrounding diffusion of soil and vegetation at test, thus cause the anti-impact flow rate result measured not accurate enough, therefore,
Surrounding at groove 111 arranges Antileaking plate 113, and Antileaking plate 113 extends to depth of soils, so,
Current are difficult to spread to surrounding, thus trial stretch are limited in the range of groove 111, are conducive to improving
The accuracy of measurement result.
In the present embodiment, driving section 12 is to removably connect with bending section 13, anti-impact section 11 and bending section
13 also removably connect, the carrying and transporting of this conveniently detachable setting, beneficially assay device,
Specifically, section 12 is driven all to use Flange joint 133 with bending section 13, anti-impact section 11 with bending section 13,
Flange joint 133 not only improves sealing, the most detachably.
Driving section 12 and bending section 13, anti-impact section 11 is arranged with anti-with the junction of bending section 13 respectively
Leakage cushion rubber 134, primarily to the gap preventing water from flowing through junction spills, affects measurement result.
Ring test plate is additionally provided with leakage preventing plug 122, and leakage preventing plug 122 is arranged in driving flow channel section, mainly
For driving section 12 leakproof.
The upper end of ring test plate is additionally provided with protection cap 14, protection cap 14 shape ringwise, and protection cap 14 is used for
The upper end open of capping annular channel, when carrying out soil and the test of vegetation impact resistance, places examination in situ
Experiment device, allows soil and vegetation be in groove 111, covers protection cap 14, covers protection cap 14 and avoids
Because current are too fast, by the foreign material around device, such as fallen leaves, gravel etc., involve in the current of device, thus
The accuracy that impact is measured, in some instances it may even be possible to damaging device.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all at this
Any amendment, equivalent and the improvement etc. made within bright spirit and principle, should be included in the present invention
Protection domain within.
Claims (10)
1. soil and the in-situ test device of vegetation impact resistance test, it is characterised in that include being provided with upper end
The ring test plate of the annular channel of opening, described ring test plate shape ringwise, described annular channel has
Driving flow channel section and anti-impact flow channel section, described driving flow channel section is provided with promotion current and follows in described annular channel
The dynamical element that circulation is dynamic, the bottom of described anti-impact flow channel section is provided with groove, is provided with measurement soil in described groove
Earth and the Pitot tube of vegetation anti-impact flow velocity.
2. soil as claimed in claim 1 and the in-situ test device of vegetation impact resistance test, its feature
Being, described driving flow channel section and described anti-impact flow channel section are that straight channel shape is arranged, and described driving flow channel section
Parallel with described anti-impact flow channel section it is arranged side by side；Described annular channel includes two curved flow channel section, described driving
Flow channel section is connected by described curved flow channel section with described anti-impact flow channel section, described driving flow channel section, two curved streams
Road section and anti-impact flow channel section enclose the annular annular channel of formation.
3. soil as claimed in claim 2 and the in-situ test device of vegetation impact resistance test, its feature
Being, being provided with demarcation strip in described curved flow channel section, described demarcation strip prolongs along the bending direction of described curved flow channel section
Stretching layout, described curved flow channel section is divided into two parallel sub-runners by described demarcation strip.
4. soil as claimed in claim 3 and the in-situ test device of vegetation impact resistance test, its feature
Being, described curved flow channel section is divided into two wide sub-runners by described demarcation strip.
5. soil as claimed in claim 2 and the in-situ test device of vegetation impact resistance test, its feature
Being, the width of flow path of described anti-impact flow channel section is less than the width of flow path of described curved flow channel section.
6. soil as claimed in claim 3 and the in-situ test device of vegetation impact resistance test, its feature
Being, described dynamical element is impeller, and described impeller is located at the porch of described sub-runner.
7. the soil as described in any one of claim 2 to 6 and the in-situ test dress of vegetation impact resistance test
Put, it is characterised in that described ring test plate includes driving section, anti-impact section and two bending sections, described
Drive that section is parallel with described anti-impact section is arranged side by side, two sections of a described bending section be connected to described in drive
One end of dynamic section and one end of described anti-impact section, the two ends of another described bending section be connected to described in drive
The other end of dynamic section and the other end of described anti-impact section, described driving section, anti-impact section and two bending sections enclose
Close and form described annular ring test plate；Described driving flow channel section is arranged in described driving section, described
Anti-impact flow channel section is arranged in described anti-impact section, and described curved flow channel section is arranged in described bending section.
8. soil as claimed in claim 7 and the in-situ test device of vegetation impact resistance test, its feature
Being, the bottom of described anti-impact section is provided with and extends down and for the Antileaking plate inserting in soil and vegetation, institute
State the Antileaking plate surrounding along described groove around arranging.
9. soil as claimed in claim 7 and the in-situ test device of vegetation impact resistance test, its feature
Being, described driving section is provided with leakproof cushion rubber with the junction of described bending section, and described anti-impact section is curved with described
The junction of tune is provided with leakproof cushion rubber.
10. the soil as described in any one of claim 1 to 6 and the in-situ test of vegetation impact resistance test
Device, it is characterised in that the upper end of described ring test plate is provided with the upper end for covering described annular channel
The protection cap of opening, described protection cap shape ringwise.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610513146.5A CN105938075A (en) | 2016-06-30 | 2016-06-30 | In-situ test device for measuring anti-scouring performance of soil and vegetation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610513146.5A CN105938075A (en) | 2016-06-30 | 2016-06-30 | In-situ test device for measuring anti-scouring performance of soil and vegetation |
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|---|---|
| CN105938075A true CN105938075A (en) | 2016-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610513146.5A Pending CN105938075A (en) | 2016-06-30 | 2016-06-30 | In-situ test device for measuring anti-scouring performance of soil and vegetation |
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| CN (1) | CN105938075A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112881224A (en) * | 2021-01-19 | 2021-06-01 | 珠江水利委员会珠江水利科学研究院 | In-situ test device for testing impact resistance of soil and vegetation |
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| US2382999A (en) * | 1943-10-06 | 1945-08-21 | Charles A Lee | Circulating water channel |
| CN103759916A (en) * | 2013-12-08 | 2014-04-30 | 天津泉达农作物种植有限公司 | Novel circulation experiment water tank |
| CN203824856U (en) * | 2014-05-04 | 2014-09-10 | 四川农业大学 | Device for in-situ determination of wash resistance of soil |
| CN204556426U (en) * | 2015-04-17 | 2015-08-12 | 河海大学 | A kind of analogue means of current erosion slope vegetation protection |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112881224A (en) * | 2021-01-19 | 2021-06-01 | 珠江水利委员会珠江水利科学研究院 | In-situ test device for testing impact resistance of soil and vegetation |
| CN112881224B (en) * | 2021-01-19 | 2022-07-12 | 珠江水利委员会珠江水利科学研究院 | In-situ test device for testing impact resistance of soil and vegetation |
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