CN105806771B - Measuring device and method of the soil-slope in Rainfall simulator erosion corrosion resistance - Google Patents
Measuring device and method of the soil-slope in Rainfall simulator erosion corrosion resistance Download PDFInfo
- Publication number
- CN105806771B CN105806771B CN201610278051.XA CN201610278051A CN105806771B CN 105806771 B CN105806771 B CN 105806771B CN 201610278051 A CN201610278051 A CN 201610278051A CN 105806771 B CN105806771 B CN 105806771B
- Authority
- CN
- China
- Prior art keywords
- soil sample
- measured
- slope surface
- side slope
- concave
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Ecology (AREA)
- Environmental & Geological Engineering (AREA)
- Environmental Sciences (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The present invention provides a kind of soil-slopes in the measuring device and method of Rainfall simulator erosion corrosion resistance, which includes outer cylindrical brace frame, interior cylindrical supporting rack, band mesh metal grid, vertical connecting bracket, concave-shaped receptacle and balance；Externally the radial direction of cylindrical support frame is provided with lateral connection holder at the top of it；Interior cylindrical supporting rack is inserted into from the top of outer cylindrical brace frame and is fixedly connected with outer cylindrical brace frame by lateral connection holder；Vertical connecting bracket is arranged inside internal cylindrical support frame and along the axial movement of interior cylindrical supporting rack；Outer cylindrical brace frame covers in the outside of balance；Concave-shaped receptacle is arranged on balance；It is arranged in the bottom of vertical connecting bracket with mesh metal grid and is vacantly placed in concave-shaped receptacle.The present invention has the advantages that efficiently use laboratory equipment evaluation soil-slope slope surface corrosion resistance and reduces the workload and expense of light field test.
Description
Technical field
The invention belongs to field of civil engineering, are related to a kind of measuring device and method of soil-slope corrosion resistance, especially
Be related to soil-slope in the case that Rainfall simulator erosion corrosion resistance measuring device and method.
Background technology
As the construction material of slope project, road engineering and dyke building etc., the soil body is directly exposed to atmospheric environment
In.Soil's water content is influenced by environmental change, precipitation, water level alternating etc., and slope table layer soil body is also easy to produce erosion and peels off and wash away
Etc. diseases so that rupture and peel off so that reduce engineering stability.Different from rock side slope, soil-slope is most universal at present
Disease be slope surface problem, along with extensive civil engineering construction, caused by being reduced by soil-slope slope surface etch resistant properties
Slope disaster, localized landslip and whole landslide are more and more, and economic loss is caused to seriously endanger people's life safety.Soil-slope
The usual depth of slope surface disease is only limitted in climatic effect band (about 1.5-2m), the disease caused by etch resistant properties deficiency according to
The difference of natural conditions can be divided into erosion and peel off and wash away two kinds, and formation mechenism has certain difference.
Any position for coming across side slope, generally sheet, flakey and bed separation, Crack cause are peeled off in the erosion caused by sloping surfaces
Including slope surface moisture humidity variation (especially to tailo generate dry and cracked peeling performance it is more prominent), slope foot tension and compression stress and
Weathering drying shrinkage etc., the soil that usual silt content is more, soluble salt content is high easy to produce erosion and peel off.Slope surface soil layer easy-weathering peels off
Slope Stability is unfavorable, especially paleosol layer it is thicker and positioned at slope foot when it is more unfavorable；Slope surface pull out type fracture is removed in slope foot shape
Dished counter-slope landform has certain influence to slope stability, if be not added with to protect rainwater infiltration of leaving, meeting side slope long-term
Stability causes tremendous influence；Slope surface peels off Rock And Soil and blocks gutter, influences whole drainage performance.
Slope wash refers to that rainfall and slope table flow destroy the slope surface surface layer soil body and cause coombe, slip phenomena such as collapsing.Soil property side
Intensity is higher when the engineering characteristic on slope is dry, and structure is destroyed after immersion, and cohesive strength is reduced rapidly, and amplitude of variation is big, facile hydrolysis
It peels off.Slope wash can cause a large amount of soil erosion, soil-slope slope wash and soil layer, soil nature, geographic and geomorphic conditions, water
Literary condition etc. has close relationship.When rain time is concentrated or is occurred in the form of heavy rain, soil-slope is easily by rainwater and ground
The destruction of table water；When side slope is built using stepped form, erosion damage is also easily caused when drainage sunk well is unreasonable；After rainfall,
The scattered small runoff of slope surface is washed into many fine and closely woven ditches, the gradient is steeper and unvegetated slope surface on rill erosion development；When
Intermittent overland flow concentrates water eroding and flooding, gradually forms shallow gully erosion and destroys slope surface and platform.
Soil-slope erosion-resisting characteristics is not a simple physically or chemically index, but a comprehensive sex factor.
Therefore, quantitative measurment soil-slope corrosion resistance is not easily accomplished.There has been no evaluation soil property sides in existing all kinds of specifications
The test method of slope corrosion resistance, the only measurement of native slaking test and side slope rain test energy part and reflection soil-slope
Corrosion resistance, can not reflect the corrosion resistance of soil-slope completely, it is special to be only capable of reflecting that full water (washes away) under state this
Situation is used as soil-slope slope surface corrosion resistance index by measuring a certain parameter of slope surface soil property.
The basic principle of the slaking test of soil is to measure the variation of volume in soil body disintegrating procedue, i.e., during the test will
Soil sample is put into the center of the web plate in humidifying instrument, rapid to immerse in water drum, starts stopwatch, scale at the neat water surface of floating drum when survey note starts
Moment stablize reading, then according still further to different time intervals come survey note the floating drum water surface reading, calculate disintegration amount with disintegration
Speed.Since the changed measurement application condition of volume during the test is big, and it need to rely on and visually observe immediate reading, artificially
Factor is relatively more, and result of calculation is very inaccurate, since reading time interval is big, can not be carried out to the Scouring Characteristic of soil-slope pre-
It surveys.
Side slope rain test is one kind of field test, and carrying out rain making by field engineering test section washes away examination
It tests, obtains different slope erosion destructive process and its anti-impact brushing effects.Ordinary test needs to measure 4 contents：(1) measure
Rainfall is forward and backward and change of moisture content of slope soil in the process；(2) the time for forming rainwash is measured；(3) measure when different
The clay content of section water sample；(4) the formation of observation slope erosion ditch and Evolution.Rainfall simulator generally uses and faces upward spray formula mould
Quasi- rain-dropping machine.The height of rainfall nozzle can freely be adjusted according to actual conditions, and performance similar to natural rainfall reaches 80%.It is existing
Field rain test can more actually complete the case study of washing away of side slope, but rainstorm mechanism and rainfall size form and natural drop
Rain has certain difference, cannot right-on reflection practical problem, and test complicated cumbersome costly.
Invention content
The present invention provides one kind and efficiently using laboratory equipment aiming at difficulty existing for above-mentioned existing engineering technology
It evaluates soil-slope slope surface corrosion resistance and reduces the workload of light field test and the soil-slope of expense in Rainfall simulator erosion
In the case of corrosion resistance measuring device and method.
To achieve the goals above, the present invention adopts the following technical scheme that：
A kind of measuring device of soil-slope in Rainfall simulator erosion corrosion resistance, it is characterised in that：The soil property side
Slope includes outer cylindrical brace frame, interior cylindrical supporting rack, band in the measuring device of Rainfall simulator erosion corrosion resistance
Mesh metal grid, vertical connecting bracket, concave-shaped receptacle and balance；The externally radial direction outer portion circle of cylindrical support frame
Lateral connection holder is provided at the top of pillar support frame；The interior cylindrical supporting rack is from the top of outer cylindrical brace frame
Portion is inserted into outer cylindrical brace frame and is fixedly connected with outer cylindrical brace frame by lateral connection holder；It is described vertical
Connecting bracket is arranged inside internal cylindrical support frame and is moved axially along the axial direction of interior cylindrical supporting rack；It is described
Outer cylindrical brace frame covers in the outside of balance；The concave-shaped receptacle is arranged on balance；The band mesh metal grid
It is arranged in the bottom of vertical connecting bracket and is vacantly placed in concave-shaped receptacle；Side slope surface soil sample to be measured is placed in band mesh gold
Belong on grid.
Preferably, the center of outer cylindrical brace frame of the present invention, interior cylindrical supporting rack center,
The center of concave-shaped receptacle and the center of balance are coaxial.
Preferably, concave-shaped receptacle of the present invention and vertical connecting bracket are both provided with fixed graduation mark.
Preferably, soil-slope of the present invention is also wrapped in the measuring device of Rainfall simulator erosion corrosion resistance
The beaker with a scale of the following partial volume of graduation mark is fixed when including for measuring vertical connecting bracket in encroached water.
Preferably, soil-slope of the present invention is also wrapped in the measuring device of Rainfall simulator erosion corrosion resistance
Include the slidably gear being arranged on internal cylindrical support frame；Including the vertical connecting bracket is arranged by slidably gear
It is moved axially inside portion's cylindrical support frame and along the axial direction of interior cylindrical supporting rack.
Preferably, balance of the present invention is separate type weighing device；The balance includes weighing platform, data
Connecting line and automatic collection recorder；The concave-shaped receptacle is placed on the weighing platform of balance；The automatic collection recorder
It is placed in outside outer cylindrical brace frame；The weighing platform is connected by data connecting line with automatic collection recorder.
Preferably, the area of the single mesh in the metal grid of the present invention with mesh is not less than 1cm2,
The band mesh metal grid is that section is that circular metal steel wire is welded.
Preferably, the range of balance of the present invention is 1-10kg；The precision of the balance is 0.01g；It is described
The time that automatically records of automatic collection recorder is 12h, the time interval for automatically recording the time of the automatic collection recorder
It is 0.5-1min/ times.
A kind of measurement side of measuring device based on foregoing soil-slope in Rainfall simulator erosion corrosion resistance
Method, it is characterised in that：The measurement method includes the following steps：
1) measurement dress is built in the measuring device of Rainfall simulator erosion corrosion resistance according to foregoing soil-slope
It sets；
2) side slope surface soil sample to be measured is acquired；The side slope surface soil sample to be measured must not be pressurized, by squeezing and
It is turned round；The side slope surface soil sample to be measured is the soil cut on big blocky soil after side slope surface acquires big blocky soil
Sample；The length of side of the side slope surface soil sample to be measured is more than 50mm；Side slope surface soil sample to be measured is measured in on-test
Preceding quality m1, while measuring the density p of side slope surface soil sample to be measureds；
3) graduation mark vertical connection below is fixed when measuring vertical connecting bracket in encroached water with beaker with a scale
The volume V of holderj；Concave-shaped receptacle is injected water into the fixation graduation mark of concave-shaped receptacle, with the quality of balance measurement concave-shaped receptacle
And deposit in the quality of water in concave-shaped receptacle and mr；
4) side slope surface soil sample to be measured is placed on band mesh metal grid, adjusting slidably gear makes band mesh
Metal grid moves up, and the concave-shaped receptacle being filled with water is positioned over below balance upper belt mesh metal grid；
5) adjustable pulley keeps band mesh metal grid downward rapidly, and when soil sample is totally submerged in water, record is initial
Time, to be measured side slope surface soil sample of the recording balance at same time interval are testing ongoing instant quality mt, with
And the quality m of side slope surface soil sample to be measured after the end of the test2；Then soil-slope is in the total anti-erosion of Rainfall simulator erosion
The relational expression of property i is：
Wherein：
I is the total erosion peeling degree of side slope surface soil sample to be measured in Rainfall simulator erosion；
m1It is the quality of side slope surface soil sample to be measured before on-test；
m2It is the quality of side slope surface soil sample to be measured after the end of the test；
T is the difference of each reading and the time of on-test during experiment.
Corrosion resistance i of the soil-slope in Rainfall simulator erosion at any timetRelational expression is：
Wherein：
ρwThe density for being water at 4 DEG C, generally takes 1g/cm3；
itIt is that soil-slope peels off degree in the erosion of Rainfall simulator erosion at any time；
m1It is the quality of side slope surface soil sample to be measured before on-test；
M is the quality of concave-shaped receptacle and deposits in the sum of the quality of water in concave-shaped receptacle；
r
VjBe vertical connecting bracket in encroached water when fix graduation mark vertical connecting bracket below volume；
mtIt is that side slope surface soil sample to be measured at same time interval is testing ongoing instant quality；
ρsIt is the density of side slope surface soil sample to be measured.
Soil-slope is T in the total time used of Rainfall simulator erosion；The function expression of the T is：
Wherein：
M is that length is L, and width, which is the side slope surface soil sample to be measured of W, to be allowed to wash away gross mass containing mud；
It is the variation function of the quality of soil sample and time that are made instantly available in experiment, i.e. itTo the derivative of time t.
Preferably, further including after the method applied in the present invention step 5)：
6) analyzing processing is carried out to the experimental data that step 5) obtains, the to be measured of statistics is participated in for same ENGINEERING POINT
Side slope surface soil sample be not less than 6 pieces, when test result it is very poor no more than its average value 10% when, side slope surface to be measured
Soil sample corrodes the erosion stripping of peeling degree i or soil-slope at any time in Rainfall simulator erosion in the total of Rainfall simulator erosion
Fall degree iTTake the average value of test result.
It is an advantage of the invention that：
The present invention provides a kind of soil-slopes in the measuring device and method of Rainfall simulator erosion corrosion resistance, the survey
Amount device includes outer cylindrical brace frame, interior cylindrical supporting rack, band mesh metal grid, vertical connecting bracket, recessed
Describe device and balance；Externally lateral connection is provided at the top of the radial direction outer portion cylindrical support frame of cylindrical support frame
Holder；Interior cylindrical supporting rack is inserted into outer cylindrical brace frame from the top of outer cylindrical brace frame and passes through transverse direction
Connecting bracket is fixedly connected with outer cylindrical brace frame；Vertical connecting bracket is arranged inside internal cylindrical support frame and edge
The axial direction of interior cylindrical supporting rack moves axially；Outer cylindrical brace frame covers in the outside of balance；Concave-shaped receptacle is set
It sets on balance；It is arranged in the bottom of vertical connecting bracket with mesh metal grid and is vacantly placed in concave-shaped receptacle；It is to be measured
The side slope surface soil sample of amount is placed on band mesh metal grid.Test specimen is saturated rapidly by the device in water, measures the soil body
Disintegration and peeling degree, this is identical as the slaking test principle of soil in specification, and the apparatus and method taken are entirely different.
Quality of soil sample quality is tested before on-test, the density of native soil sample is measured according to related specifications regulation, with the burning with a scale that is filled with water
Cup measures the volume of the vertical connecting bracket of red graticule or less；Balance is positioned over below holder combination；Inject water into spill appearance
Device is to fixed graduation mark, with balance measurement concave-shaped receptacle and the quality that is wherein filled with water.Soil sample is positioned over band mesh metal grid
On, adjusting slidably gear makes band mesh metal grid move up, and the concave-shaped receptacle being filled with water is positioned over balance upper belt
Below mesh metal grid.The apparatus structure is simple, clear principle, strong, the required accessory easy processing of experiment operability, at
This is cheap.Measuring device and measurement method recorded in the present invention have carried out multigroup experiment, and result is apparent, when experiment
Between it is short, can clearly identify the corrosion resistance of different soil.
Description of the drawings
Fig. 1 is the structural schematic diagram of measuring device provided by the present invention；
Wherein：
5- balances；6- weighing platforms；7- data connecting lines；8- automatic collection recorders；10- interior cylindrical supporting racks；
11- outer cylindrical brace framves；12- band mesh metal grids；13- lateral connection holders；The vertical connecting brackets of 14-；15- can
Balladeur train；16- concave-shaped receptacles.
Below in conjunction with drawings and examples, the present invention is described in further detail.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.Described herein specific examples are only used to explain the present invention, is not used to limit
The present invention.
Referring to Fig. 1, the present invention provides a kind of soil-slopes in the measuring device of Rainfall simulator erosion corrosion resistance, should
Soil-slope includes outer cylindrical brace frame 11, interior cylindrical branch in the measuring device of Rainfall simulator erosion corrosion resistance
Support 10, band mesh metal grid 12, vertical connecting bracket 14, concave-shaped receptacle 16 and balance 5；Externally cylindrical support
The top of the radial direction outer portion cylindrical support frame 11 of frame 11 is provided with lateral connection holder 13；Interior cylindrical supporting rack 10 from
The top of outer cylindrical brace frame 11 is inserted into outer cylindrical brace frame 11 and passes through lateral connection holder 13 and outer circle
Pillar support frame 11 is fixedly connected；The vertical setting of connecting bracket 14 is in 10 inside of internal cylindrical support frame and along interior cylindrical
The axial direction of supporting rack 10 moves axially；Outer cylindrical brace frame 11 covers in the outside of balance 5；The setting of concave-shaped receptacle 16 exists
On balance 5；It is arranged in the bottom of vertical connecting bracket 14 with mesh metal grid 12 and is vacantly placed in concave-shaped receptacle 16；It waits for
The side slope surface soil sample of measurement is placed on band mesh metal grid.
Test specimen is saturated rapidly by method provided by the present invention in water, measure the soil body disintegration and peel off degree, this with
In specification ' native slaking test ' principle is identical, and the apparatus and method taken are entirely different.It is tested before on-test
Quality of soil sample quality m1, the density p of native soil sample is measured according to related specifications regulations, red graticule is measured with shallow bag meter glass
The volume V of vertical connecting bracket belowj；Balance is positioned over below holder combination；Concave-shaped receptacle is injected water into fixed scale
Line, with balance measurement concave-shaped receptacle and the quality m that is wherein filled with waterr.Soil sample is positioned on band mesh metal grid, adjusting can be slided
Moving gear makes band mesh metal grid move up, and the concave-shaped receptacle being filled with water is positioned over balance upper belt mesh metal grid
Side off the net.At this point, the support force F that holder is subject to1, support force F of the balance to concave-shaped receptacle and water2.Then have：
F1=mjg+m1G formula (1)
F2=mrG formula (2)
According to mechanics principle, testing equipment composition system stress is constant, has
F1+F2=c=mjg+m1g2+mrG formula (3)
Wherein mjFor the quality of holder combination, wherein c is constant, and size is constant.
Adjustable pulley keeps band mesh metal grid downward rapidly, and when soil sample is totally submerged in water, soil sample is dispersed in
In water.Record initial time, in the light of actual conditions or test requirements document recording balance same time interval reading mT, to be tested
Terminate to read data m2。
During the test, to holder support force F1Carrying out mechanical analysis then has
F1+ρwg(Vj+VResidual)=mjg+mResidualG formula (4)
According to formula (3) and formula (4), then have
F2=mrg+ρwg(Vj+VResidual)+mIt is scatteredG formula (5)
It is m that quality is weighed wherein on T moment balancesT=F2/ g, and m1=mIt is scattered+mResidual
The above given data, which is substituted into formula (5), then to be had
Corrosion resistance i of the soil-slope in Rainfall simulator erosion at any timetFormula (7) can be used to calculate
Wherein：
ρwThe density for being water at 4 DEG C, generally takes 1g/cm3；
itIt is that soil-slope peels off degree in the erosion of Rainfall simulator erosion at any time；
m1It is the quality of side slope surface soil sample to be measured before on-test；
mrIt is the quality of concave-shaped receptacle and deposits in the sum of the quality of water in concave-shaped receptacle；
VjBe vertical connecting bracket in encroached water when fix graduation mark vertical connecting bracket below volume；
mtIt is that side slope surface soil sample to be measured at same time interval is testing ongoing instant quality；
ρsIt is the density of side slope surface soil sample to be measured.
mResidualFor experiment when still on mesh metal grid sample quality.
VResidualFor experiment when still on mesh metal grid sample volume.
mIt is scatteredFor experiment when enter concave-shaped receptacle sample quality.
T is the difference of each reading and the time of on-test during experiment.
Soil-slope is T in the total time used of Rainfall simulator erosion, and the function expression of T is：
Soil-slope reflects the anti-erosion overall performance of soil in the total time T of Rainfall simulator erosion, and the time is shorter anti-to invade
It is stronger to lose overall performance.In general the quality m of final soil block2It is 0.
Wherein：
M is that length is L, and width, which is the side slope surface soil sample to be measured of W, to be allowed to wash away gross mass containing mud；
It is the variation function of the quality of soil sample and time that are made instantly available in experiment, i.e. itTo the derivative of time T.
Analyzing processing is carried out to experimental data obtained above, the side slope to be measured of statistics is participated in for same ENGINEERING POINT
Slope surface soil sample be not less than 6 pieces, when test result it is very poor no more than its average value 10% when, side slope surface soil sample to be measured
Total peeling degree i or soil-slope of corroding in Rainfall simulator erosion peels off journey in the erosion of Rainfall simulator erosion at any time
Spend iTTake the average value of test result.
A kind of test method measuring soil-slope corrosion resistance of the present invention, embodiment includes the following steps, ties below
Attached drawing is closed the present invention is explained in further detail.
Embodiment 1：
Instrument and equipment
Holder combination：By interior cylindrical supporting rack, outer cylindrical brace, lateral connection holder, vertical connecting bracket
It is formed with balladeur train, wherein the height of interior cylindrical supporting rack is more than outer cylindrical brace frame, interior cylindrical support
Frame is made of 4 vertical connecting brackets and two annulars.Outer cylindrical brace frame passes through lateral connection holder and balladeur train
Rigid connection, lateral connection holder, vertical connecting bracket are connected by slidably gear, and vertical connecting bracket can be freely up and down
Activity carries fixed graduation mark thereon.
Band mesh metal grid：Screening area is generally 1cm2(can not being allowed too small with bigger), grid is metal
Steel wire weld forms, and surface is smooth, and cross sectional shape is round (not being preferably rectangle)；
Balance：Separate type weighing device is made of, range weighing platform 6, data connecting line 7, automatic collection recorder 8
1-10kg, precision 0.1g, it is 12h to automatically record the time, and it is 0.5-1min/ times to record time interval every time.
Concave-shaped receptacle：Container depth need to be much larger than 3 times of soil sample height or more, and container area need to be more than interior cylindrical and support
More than frame floor space three times, there is fixed scale thereon, injects water every time and arrive this scale.
Beaker：Common beaker with a scale, for measuring vertical connecting bracket graduation mark displacement of volume below.
Assembling mode
Balance is positioned on platform, places dress water concave-shaped receptacle thereon, for exterior support frame on platform, internal stent is hanging
Above concave-shaped receptacle, the center of balance, concave-shaped receptacle and holder combination need to be kept substantially on the same axis.
Test procedure
1, soil body soil sample is acquired, soil sample must not be pressurized, by squeezing and being turned round in sampling process, avoid vibrating in transportational process
Destroy soil structures.Soil is cut in soil body soil sample, generally preferably takes 6 pieces or more, the length of side is more than the square of 50mm.Measure soil soil
Sample quality m1, respectively 285.0g, 304.0g, 324.0g, 298.0g, 316.0g and 346.0g.It is surveyed according to related specifications regulation
The density p of the native soil sample of amountsFor 1.64g/cm3。
It 2, will be by exterior support frame, interior shelf, band mesh metal grid, lateral connection holder, vertical connection branch
Frame and balladeur train are connected according to shown in Fig. 1.A graduation mark is drawn in vertical connecting bracket, it is desirable that each position is adjusted to this moment
Degree measures the displacement of volume V of supporting rack at this time using beaker with a scalej=6.4cm3。
3, concave-shaped receptacle is injected water into up to graduation mark is fixed thereon, with balance measurement concave-shaped receptacle and the quality that is wherein filled with water
mr=4256g；
4, assembling instrument is required according to assembling mode.Soil sample is positioned on band mesh metal grid, adjustable pulley makes
Band mesh metal grid is downward rapidly, when soil sample is totally submerged in water, records initial time, in the light of actual conditions or tries
Test the reading m for requiring recording balance in same time interval (generally 30s or 60s)t, end reading data m to be tested2.By
Excessive in data volume, this experiment intertrial interval is indicated with 2min, as a result any time mtSuch as following table.
Soil-slope can be calculated as follows in Rainfall simulator erosion corrosion resistance with formula 7.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement etc., should all be included in the protection scope of the present invention made by within refreshing and principle.
Claims (2)
1. a kind of measurement method of measuring device based on soil-slope in Rainfall simulator erosion corrosion resistance, the soil property side
Slope includes outer cylindrical brace frame (11), interior cylindrical supporting rack in the measuring device of Rainfall simulator erosion corrosion resistance
(10), band mesh metal grid (12), vertical connecting bracket (14), concave-shaped receptacle (16) and balance (5)；Externally cylinder
It is provided with lateral connection holder (13) at the top of the radial direction outer portion cylindrical support frame (11) of shape supporting rack (11)；The inside
Cylindrical support frame (10) is inserted into outer cylindrical brace frame (11) and passes through from the top of outer cylindrical brace frame (11)
Lateral connection holder (13) is fixedly connected with outer cylindrical brace frame (11)；The vertical connecting bracket (14) is arranged in inside
Cylindrical support frame (10) is internal and is moved axially along the axial direction of interior cylindrical supporting rack (10)；The external cylindrical
Supporting rack (11) covers in the outside of balance (5)；The concave-shaped receptacle (16) is arranged on balance (5)；Band mesh metal side
Grid (12) is arranged in the bottom of vertical connecting bracket (14) and is vacantly placed in concave-shaped receptacle (16)；Side slope surface to be measured
Soil sample is placed on band mesh metal grid (12)；
The center of the outer cylindrical brace frame (11), the center of interior cylindrical supporting rack (10), concave-shaped receptacle (16)
Center and the center of balance (5) are coaxial；
The concave-shaped receptacle (16) and vertical connecting bracket (14) are both provided with fixed graduation mark；
The soil-slope further includes for measuring vertical connecting bracket in the measuring device of Rainfall simulator erosion corrosion resistance
(14) in encroached water the beaker with a scale of the following partial volume of graduation mark is fixed when；
The soil-slope further includes being arranged in internal cylindrical support in the measuring device of Rainfall simulator erosion corrosion resistance
Slidably gear (15) on frame (10)；The vertical connecting bracket (14) is arranged by slidably gear (15) in inner cylinder
Shape supporting rack (10) is internal and is moved axially along the axial direction of interior cylindrical supporting rack (10)；
The balance (5) is separate type weighing device；The balance (5) include weighing platform (6), data connecting line (7) and
Automatic collection recorder (8)；The concave-shaped receptacle (16) is placed on the weighing platform (6) of balance (5)；The automatic collection record
It is external that instrument (8) is placed in outer cylindrical brace frame (11)；The weighing platform (6) passes through data connecting line (7) and automatic collection
Recorder (8) is connected；
The area of single mesh in the band mesh metal grid (12) is not less than 1cm2, the band mesh metal grid
(12) it is that section is welded for circular metal steel wire；
The range of the balance (5) is 1-10kg；The precision of the balance (5) is 0.01g；The automatic collection recorder (8)
Automatically record the time be 12h；The time interval for automatically recording the time of the automatic collection recorder (8) is 0.5-1min/
It is secondary；
It is characterized in that：The measurement method includes the following steps：
1) measuring device according to soil-slope in Rainfall simulator erosion corrosion resistance builds measuring device；
2) side slope surface soil sample to be measured is acquired；The side slope surface soil sample to be measured must not be pressurized, by squeezing and turned round；
The side slope surface soil sample to be measured is the soil sample cut on big blocky soil after side slope surface acquires big blocky soil；It is described
The length of side of side slope surface soil sample to be measured is more than 50mm；Measure the quality of side slope surface soil sample to be measured before on-test
m1, while measuring the density p of side slope surface soil sample to be measureds；
3) graduation mark vertical connection below is fixed when measuring vertical connecting bracket (14) in encroached water with beaker with a scale
The volume V of holder (14)j；Concave-shaped receptacle (16) is injected water into the fixation graduation mark of concave-shaped receptacle, spill is measured with balance (5)
The quality of container and deposit in the quality of water in concave-shaped receptacle and mr；
4) side slope surface soil sample to be measured is placed on band mesh metal grid, adjusting slidably gear makes band mesh metal
Grid moves up, and the concave-shaped receptacle being filled with water is positioned over below balance upper belt mesh metal grid；
5) adjustable pulley keeps band mesh metal grid downward rapidly, when soil sample is totally submerged in water, records initial time,
To be measured side slope surface soil sample of the recording balance at same time interval is testing ongoing instant quality mtAnd it is to be measured
The quality m of the side slope surface soil sample of amount after the end of the test2；Then soil-slope is in the case that the total corrosion resistance i's of Rainfall simulator erosion
Relational expression is：
Wherein：
I is the total erosion peeling degree of side slope surface soil sample to be measured in Rainfall simulator erosion；
m1It is the quality of side slope surface soil sample to be measured before on-test；
m2It is the quality of side slope surface soil sample to be measured after the end of the test；
T is the difference of each reading and the time of on-test during experiment；
Corrosion resistance i of the soil-slope in Rainfall simulator erosion at any timetRelational expression is：
Wherein：
ρwThe density for being water at 4 DEG C, generally takes 1g/cm3；
itIt is that soil-slope peels off degree in the erosion of Rainfall simulator erosion at any time；
m1It is the quality of side slope surface soil sample to be measured before on-test；
mrIt is the quality of concave-shaped receptacle and deposits in the sum of the quality of water in concave-shaped receptacle；
VjBe vertical connecting bracket in encroached water when fix graduation mark vertical connecting bracket below volume；
mtIt is that side slope surface soil sample to be measured at same time interval is testing ongoing instant quality；
ρsIt is the density of side slope surface soil sample to be measured；
Soil-slope is T in the total time used of Rainfall simulator erosion；The function expression of the T is：
Wherein：
M is that length is L, and width, which is the side slope surface soil sample to be measured of W, to be allowed to wash away gross mass containing mud；
It is the variation function of the quality of soil sample and time that are made instantly available in experiment, i.e. itTo the derivative of time t.
2. measurement method according to claim 1, it is characterised in that：Further include after the step 5)：
6) analyzing processing is carried out to the experimental data that step 5) obtains, the side slope to be measured of statistics is participated in for same ENGINEERING POINT
Slope surface soil sample be not less than 6 pieces, when test result it is very poor no more than its average value 10% when, side slope surface soil sample to be measured
Total peeling degree i or soil-slope of corroding in Rainfall simulator erosion peels off journey in the erosion of Rainfall simulator erosion at any time
Spend itTake the average value of test result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610278051.XA CN105806771B (en) | 2016-05-01 | 2016-05-01 | Measuring device and method of the soil-slope in Rainfall simulator erosion corrosion resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610278051.XA CN105806771B (en) | 2016-05-01 | 2016-05-01 | Measuring device and method of the soil-slope in Rainfall simulator erosion corrosion resistance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105806771A CN105806771A (en) | 2016-07-27 |
| CN105806771B true CN105806771B (en) | 2018-09-14 |
Family
ID=56458061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610278051.XA Active CN105806771B (en) | 2016-05-01 | 2016-05-01 | Measuring device and method of the soil-slope in Rainfall simulator erosion corrosion resistance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105806771B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201130131Y (en) * | 2007-12-24 | 2008-10-08 | 中国科学院水利部成都山地灾害与环境研究所 | Soil disintegration determinator |
| CN101614643A (en) * | 2009-07-21 | 2009-12-30 | 长江水利委员会长江科学院 | Rock-soil wetting test device |
| CN103728435A (en) * | 2014-01-15 | 2014-04-16 | 水利部交通运输部国家能源局南京水利科学研究院 | Slope simulation test device and test method under coupling effects of rainfall and underground water |
| CN205593898U (en) * | 2016-05-01 | 2016-09-21 | 山西省交通科学研究院 | Measurement device for soil property side slope is anti aggressivity under rainfall condition of erodeing |
-
2016
- 2016-05-01 CN CN201610278051.XA patent/CN105806771B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201130131Y (en) * | 2007-12-24 | 2008-10-08 | 中国科学院水利部成都山地灾害与环境研究所 | Soil disintegration determinator |
| CN101614643A (en) * | 2009-07-21 | 2009-12-30 | 长江水利委员会长江科学院 | Rock-soil wetting test device |
| CN103728435A (en) * | 2014-01-15 | 2014-04-16 | 水利部交通运输部国家能源局南京水利科学研究院 | Slope simulation test device and test method under coupling effects of rainfall and underground water |
| CN205593898U (en) * | 2016-05-01 | 2016-09-21 | 山西省交通科学研究院 | Measurement device for soil property side slope is anti aggressivity under rainfall condition of erodeing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105806771A (en) | 2016-07-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Konrad et al. | Desiccation of a sensitive clay: field experimental observations | |
| CN104374894A (en) | Fine simulation test method for water-erosion process of small-basin different-landform unit | |
| US5331847A (en) | Soil erodibility testing | |
| Ilek et al. | A laboratory method to determine the hydraulic conductivity of mountain forest soils using undisturbed soil samples | |
| CN108277795B (en) | A kind of method of acid adding presoaking processing non-self centred graph ground | |
| Teysseire et al. | Water retention in a steep moraine slope during periods of heavy rain | |
| CN105738275B (en) | The measuring device and method of soil-slope corrosion resistance in the case where corroding peeling conditions | |
| Zhao et al. | Field infiltration of artificial irrigation into thick loess | |
| CN105806771B (en) | Measuring device and method of the soil-slope in Rainfall simulator erosion corrosion resistance | |
| CN205593898U (en) | Measurement device for soil property side slope is anti aggressivity under rainfall condition of erodeing | |
| Pineda et al. | Testing block samples from silty deposits | |
| Pagano et al. | A large physical model to simulate flowslides in pyroclastic soils | |
| Bond | Soil Physical Methods for Estimating Recharge-Part 3 | |
| Zornberg et al. | Evaluation of the development of capillary barriers at the interface between fine-grained soils and nonwoven geotextiles | |
| RU153836U1 (en) | INSTALLATION FOR STUDYING FILTRATION DEFORMATIONS OF THIN SPACES OF UNCONNECTED SOILS | |
| Möller et al. | Interaction of wave overtopping and clay properties for seadikes | |
| CN209802933U (en) | Self-starting negative pressure drainage test device | |
| Souza et al. | Monitoring of Iron Tailings Saturation Using Water Moisture Sensors | |
| Yoon et al. | Capillary effect in salt-cemented media of particle sizes | |
| Hu et al. | Model Test Study of Rainfall Factors on Failure Process of Xiashu Loess Slope with Gravel Layer | |
| Meier et al. | Monitoring of cover and watershed performance for soil covers placed over saline-sodic shale overburden from oilsands mining | |
| RU93151U1 (en) | INSTALLATION FOR DETERMINING FILTRATION ABILITY OF SOIL | |
| Yates et al. | The hydromechanical behaviour of unsaturated loess in slopes, New Zealand | |
| Saravanathiiban et al. | Effect of temperature on field water content measurements using water content reflectometers | |
| Polak et al. | Measuring soil moisture dynamics in an irrigated orchard by time domain reflectometry method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |