CN105738275A - Measuring device and measuring method for erosion resistance of soil slope under erosion falling condition - Google Patents
Measuring device and measuring method for erosion resistance of soil slope under erosion falling condition Download PDFInfo
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Abstract
The invention belongs to the field of civil engineering and relates to a measuring device and a measuring method for erosion resistance of a soil slope under an erosion falling condition. The measuring device comprises a temperature-varying and humidity-varying box and an internal cylindrical supporting frame, an external cylindrical supporting frame, a meshed metal square grid, a metal grid plate and a scale which are all arranged in the temperature-varying and humidity-varying box, wherein the meshed metal square grid is arranged at the top of the internal cylindrical supporting frame; the metal grid plate is arranged at the top of the external cylindrical supporting frame; the external cylindrical supporting frame covers the external part of the scale; the internal cylindrical supporting frame passes through the metal grid plate and then is arranged on the scale; the sum of the heights of the internal cylindrical supporting frame and the scale is more than the height of the external cylindrical supporting frame; a to-be-measured slope soil sample is arranged on the meshed metal square grid. The measuring device provided by the invention can be used for evaluating the erosion resistance of the soil slope by effectively utilizing laboratory equipment, relieving the workload and reducing cost of field test.
Description
Technical field
The invention belongs to field of civil engineering, relate to measurement apparatus and the method for a kind of soil-slope corrosion resistance, particularly relate to measurement apparatus and the method for a kind of soil-slope corrosion resistance under corroding peeling conditions.
Background technology
As the construction material of slope project, road engineering and dyke building etc., the soil body is directly exposed in atmospheric environment.Soil's water content alternately etc. is affected by environmental change, precipitation, water level, and slope table layer soil body is easily generated erosion and peels off and wash away etc. disease, to such an extent as to breaks and peel off and then reduce engineering stability.Different from rock side slope, the most common disease of current soil-slope is domatic problem, along with extensive civil engineering construction, soil-slope domatic etch resistant properties reduction the slope disaster, localized landslip and the overall landslide that cause are more and more, cause economic loss serious harm people's life safety.The usual degree of depth of the domatic disease of soil-slope is only limitted in climatic effect band (being about 1.5-2m), etch resistant properties deficiency the disease caused is divided into erosion to peel off according to different from natural conditions and wash away two kinds, and its formation mechenism exists certain difference.
Any position coming across side slope is peeled off in the erosion caused by sloping surfaces, it is generally lamellar, flakey and bed separation, Crack cause includes domatic moisture humidity change (the dry and cracked peeling especially produced shows more prominent) to tailo, toe draws action of compressive stress and air slaking drying shrinkage etc., and the soil that usual silt content is many, soluble salt content is high easily produces erosion peeling.Domatic soil layer easy-weathering peel off Slope Stability unfavorable, particularly paleosol layer thicker and be positioned at during toe more unfavorable；Domatic pull out type fracture is except having certain impact in toe shape dished counter-slope landform to slope stability, if being not added with, to protect rainwater infiltration of leaving, long-term slope stability to be caused tremendous influence；Domatic peeling Rock And Soil blocking gutter, the overall drainage performance of impact.
Slope wash refers to that rainfall and slope table current destroy the domatic top layer soil body and cause coombe, slip the phenomenon such as collapse.When the engineering characteristic of soil-slope is dry, intensity is higher, structural deterioration after immersion, and cohesive strength reduces rapidly, and amplitude of variation is big, and facile hydrolysis peels off.Slope wash can cause substantial amounts of soil erosion, and soil-slope slope wash and soil layer, soil nature, geographic and geomorphic conditions, hydrologic condition etc. have close relationship.When rain time is concentrated or occurs with heavy rain form, soil-slope is very easily by the destruction of rainwater and surface water；When side slope adopts stepped form to build, when drainage sunk well is unreasonable, also easily cause erosion damage；After rainfall, domatic dispersed little runoff is washed into many fine and closely woven ditches, and the gradient is steeper and unvegetated domatic upper rill erosion is grown；When intermittent overland flow concentrates water eroding and flooding, gradually form shallow gully erosion and destroy domatic and platform.
Soil-slope erosion-resisting characteristics is not a simple physically or chemically index, but a comprehensive factor.Therefore, quantitative measurement soil-slope corrosion resistance is not easily accomplished.Existing all kinds of specifications not yet have the test method evaluating soil-slope corrosion resistance, only have the slaking test of soil and the corrosion resistance of the measurement of side slope rain test energy part and reflection soil-slope, the corrosion resistance of soil-slope can not be reflected completely, it is only capable of reflecting these special circumstances under full water (washing away) state, by measuring a certain parameter of domatic soil property as the domatic corrosion resistance index of soil-slope.
The ultimate principle of the slaking test of soil is to measure the change of volume in soil body disintegrating procedue, namely in process of the test, soil sample is put into the web plate central authorities in humidifying instrument, immerse rapidly in water drum, start stopwatch, survey the moment of floating drum neat water surface place scale when note starts and stablize reading, then survey the reading of the note floating drum water surface according still further to different intervals, calculate disintegrate amount and disintegration rate.Owing to the changed measurement application condition of volume is big in process of the test, and need to relying on perusal immediate reading, anthropic factor is relatively more, and result of calculation is very inaccurate, owing to reading time interval is big, can not the Scouring Characteristic of soil-slope be predicted.
Side slope rain test is the one of on-the-spot test, carries out rain making washout test by field engineering test section, obtains different slope erosion destructive processs and antiscour effect thereof.Ordinary test needs to measure 4 contents: (1) measure that rainfall is forward and backward and the change of moisture content of slope soil in process；(2) measure the time forming rainwash；(3) measure the clay content at different periods water sample；(4) observe formation and the Evolution of slope erosion ditch.Rainfall simulator is generally adopted faces upward spray formula simulated rainfall machine.The height of rainfall shower nozzle freely can regulate according to practical situation, reaches 80% to the similar performance of natural rainfall.On-the-spot rain test can complete the case study of washing away to side slope more really, but rainstorm mechanism and rainfall size form have certain difference with natural rainfall, it is impossible to right-on reflection practical problem, and it is loaded down with trivial details costly to test complexity.
Summary of the invention
The present invention is directed to the difficulty that above-mentioned prior art exists, it is provided that a kind of measurement apparatus and method that can effectively utilize the laboratory equlpment evaluation domatic corrosion resistance of soil-slope and the light on-the-spot workload of test and the soil-slope of expense corrosion resistance under corroding peeling conditions can be reduced.
To achieve these goals, the present invention adopts the following technical scheme that
A kind of soil-slope is the measurement apparatus of corrosion resistance under corroding peeling conditions, it is characterised in that: described soil-slope measurement apparatus of corrosion resistance under corroding peeling conditions includes interior cylindrical bracing frame, outer cylindrical brace frame, band mesh metal grid, metal check board, balance and alternating temperature and gets wet case；The top of described interior cylindrical bracing frame is provided with mesh metal grid；The top of described outer cylindrical brace frame is provided with metal check board；Described outer cylindrical brace frame covers in the outside of balance；Described interior cylindrical bracing frame is placed on balance through metal check board；The height sum of described interior cylindrical bracing frame and balance is more than the height of outer cylindrical brace frame；Described interior cylindrical bracing frame, outer cylindrical brace frame, band mesh metal grid, metal check board and balance are arranged at alternating temperature and get wet in case；Side slope surface soil sample to be measured is placed on band mesh metal grid.
As preferably, the height sum of interior cylindrical bracing frame of the present invention and balance is at least above the height 5cm of outer cylindrical brace frame.
As preferably, balance of the present invention is separate type weighing device；Described balance includes weighing platform, data connecting line and automatic acquisition and recording instrument；Described interior cylindrical bracing frame is placed on the weighing platform of balance through metal check board；Described automatic acquisition and recording instrument is placed in alternating temperature and gets wet outside case；Described weighing platform is connected with automatic acquisition and recording instrument by data connecting line.
As preferably, the floor space of interior cylindrical bracing frame of the present invention is less than the area of the weighing platform of balance；The floor space of described outer cylindrical brace frame gets wet the space floor space in case much larger than the weighing platform of balance at alternating temperature.
As preferably, the area of metal check board of the present invention is much larger than the area with mesh metal grid.
As preferably, the area with the single mesh in mesh metal grid of the present invention is not less than 1cm2It is, described that with mesh metal grid, to be cross section be that circular metal steel wire weld forms.
As preferably, the range of balance of the present invention is 1-10kg；The precision of described balance is 0.01g；The automatic record time of described automatic acquisition and recording instrument is 7d；Automatically the interval of time that records of described automatic acquisition and recording instrument is 1-5min/ time.
As preferably, it is-40 DEG C 100 DEG C that alternating temperature of the present invention gets wet the temperature controlling range of case；It is 20%RH 98%RH that described alternating temperature gets wet the humid control scope of case.
A kind of corroding the measuring method of the measurement apparatus of corrosion resistance under peeling conditions based on foregoing soil-slope, it is characterised in that: described measuring method comprises the following steps:
1) measurement apparatus is built according to foregoing soil-slope measurement apparatus of corrosion resistance under corroding peeling conditions；
2) side slope surface soil sample to be measured is gathered；Described side slope surface soil sample to be measured must not pressurized, by squeeze and turned round；Described side slope surface soil sample to be measured is the soil sample cut on big block soil after the block greatly soil of side slope surface collection；The length of side of described side slope surface soil sample to be measured is more than 50mm；Side slope surface soil sample to be measured being placed on the band mesh metal grid at interior cylindrical bracing frame top, the reading at balance makes zero or after peeling, measures side slope surface soil sample to be measured quality m before on-test1；
3) open alternating temperature and get wet case switch, according to intending the engineering practice design experiment condition analyzed, periodically adjust alternating temperature and get wet the temperature of case and humidity circulation change；In a complete cycle, it is consistent with the historical high temperature of side slope region that described alternating temperature gets wet the maximum temperature of case, it is consistent with the historical low temperature of side slope region that described alternating temperature gets wet the minimum temperature of case, and it is sinusoidal that described alternating temperature gets wet the time dependent figure of temperature of case；The most high humility that described alternating temperature gets wet case is consistent with the historical high humidity of side slope region, it is consistent with the historical low humidity of side slope region that described alternating temperature gets wet the minimum humidity of case, and it is sinusoidal, the trapezoidal or shape of a saddle that described alternating temperature gets wet the time dependent figure of case humidity；
4) the side slope surface soil sample to be measured that the automatic acquisition and recording instrument of balance is automatically recorded in identical interval is testing ongoing instant quality mt, and the quality m that side slope surface soil sample to be measured is after off-test2, the relational expression of the described side slope surface soil sample to be measured total erosion peeling degree i under corroding peeling conditions is:
Wherein:
I is that total under corroding peeling conditions of side slope surface soil sample to be measured corrodes peeling degree；
m1It it is side slope surface soil sample to be measured quality before on-test；
m2It it is side slope surface soil sample to be measured quality after off-test；
Described side slope surface soil sample to be measured peels off degree i corroding under peeling conditions erosion in timetRelational expression is:
Wherein:
itIt is that degree is peeled off in side slope surface soil sample to be measured erosion in time under corroding peeling conditions；
m1It it is side slope surface soil sample to be measured quality before on-test；
mtThe side slope surface soil sample being to be measured is testing ongoing instant quality；
The t soil-slope time used by Rainfall simulator erosion situation；The function expression of described t is:
Wherein:
M is length is L, and the side slope surface soil sample to be measured that width is W allows incrustate gross mass；
The change function of quality of soil sample and the time being made instantly available in test, i.e. itDerivative to time t.
As preferably, the present invention is in the step 4 of above-mentioned measuring method) after also include:
5) to step 4) experimental data that obtains is analyzed processing, the side slope surface soil sample to be measured same ENGINEERING POINT being participated in statistics is not less than 2 pieces, when result of the test extreme difference less than its meansigma methods 10% time, side slope surface soil sample to be measured peels off degree i in the erosion in time under corroding peeling conditions of the total peeling degree i of erosion corroded under peeling conditions or side slope surface soil sample to be measuredtTake the meansigma methods of result of the test.
The invention have the advantage that
The invention provides a kind of soil-slope and corroding measurement apparatus and the method for corrosion resistance under peeling conditions, wherein this measurement apparatus includes interior cylindrical bracing frame, outer cylindrical brace frame, band mesh metal grid, metal check board, balance and alternating temperature and gets wet case；The top of interior cylindrical bracing frame is provided with mesh metal grid；The top of outer cylindrical brace frame is provided with metal check board；Outer cylindrical brace frame covers in the outside of balance；Interior cylindrical bracing frame is placed on balance through metal check board；The height sum of interior cylindrical bracing frame and balance is more than the height of outer cylindrical brace frame；Interior cylindrical bracing frame, outer cylindrical brace frame, band mesh metal grid, metal check board and balance are arranged at alternating temperature and get wet in case；Side slope surface soil sample to be measured is placed on band mesh metal grid.The present invention utilizes the change of the conditions such as the air slaking under laboratory condition simulating natural environment, temperature, humidity, and the erosion analyzing domatic soil property is peeled off.The contrast with Practical Project is obtained for reaching fast testing, have employed reduction test period, shortened the temperature humidity Changing Pattern of in engineering one year was applied on test specimen in one week, and the factor such as test period and engine request is relevant, it is possible to be adjusted according to correlated condition.Present configuration is simple, clear principle, testing workable, required accessory is easily processed, with low cost, laboratory equlpment can be effectively utilized to evaluate the domatic corrosion resistance of soil-slope and workload and the expense of light on-the-spot test can be reduced, having carried out many groups of tests, its result can clearly identify the corrosion resistance of different soil, and result is accurate, workable, result of the test repeatability is strong.
Accompanying drawing explanation
Fig. 1 is soil-slope provided by the present invention schematic diagram of corrosion resistance measurement apparatus under corroding peeling conditions；
Wherein:
1-interior cylindrical bracing frame；2-outer cylindrical brace frame；3-band mesh metal grid；4-metal check board；5-balance；6-weighing platform；7-data connecting line；The automatic acquisition and recording instrument of 8-；9-alternating temperature gets wet case.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
Measuring soil-slope and corrode the method for corrosion resistance under peeling conditions in natural conditions, utilize the change of the conditions such as the air slaking under laboratory condition simulating natural environment, temperature, humidity, the erosion analyzing domatic soil property is peeled off.Obtain the contrast with Practical Project for reaching fast testing, have employed reduction test period, the temperature humidity Changing Pattern of in engineering one year is shortened to be applied on test specimen in one week.Test period is relevant with factors such as engine requests, it is possible to be adjusted according to correlated condition.Due to holder combination part and sky flat contact, balance is only capable of the quality of weighing part support, balance peeling zero.Soil sample being placed on band mesh metal grid, balance only weighs the quality of soil sample, quality of soil sample m during on-test1.When alternating temperature gets wet the change of case environment, the soil sample surface soil body peels off to metallic plate, then be the quality of incrustate, and balance quality of weighing is m2, the difference between the two represents the peeling quality of side slope soil property, owing to density is identical, then:
I and itRepresent total corrosion resistance of the soil body and instantaneous corrosion resistance respectively.
m1It it is side slope surface soil sample to be measured quality before on-test；
mtThe side slope surface soil sample being to be measured is testing ongoing instant quality；
The t soil-slope time used by Rainfall simulator erosion situation；The function expression of t is:
Wherein:
M is length is L, and the side slope surface soil sample to be measured that width is W allows incrustate gross mass；
The change function of quality of soil sample and the time being made instantly available in test, i.e. itDerivative to time t.
Simultaneously, it is analyzed experimental data obtained above processing, the side slope surface soil sample to be measured same ENGINEERING POINT being participated in statistics is not less than 2 pieces, when result of the test extreme difference less than its meansigma methods 10% time, side slope surface soil sample to be measured peels off degree i in the erosion in time under corroding peeling conditions of the total peeling degree i of erosion corroded under peeling conditions or side slope surface soil sample to be measuredtTake the meansigma methods of result of the test.
Below in conjunction with accompanying drawing, the technical solution adopted in the present invention is described in detail.
Referring to Fig. 1, the invention provides a kind of soil-slope measurement apparatus of corrosion resistance under corroding peeling conditions, this soil-slope measurement apparatus of corrosion resistance under corroding peeling conditions includes interior cylindrical bracing frame 1, outer cylindrical brace frame 2, band mesh metal grid 3, metal check board 4, balance 5 and alternating temperature and gets wet case 9；The top of interior cylindrical bracing frame 1 is provided with mesh metal grid 3；The top of outer cylindrical brace frame 2 is provided with metal check board 4；Outer cylindrical brace frame 2 covers in the outside of balance 5；Interior cylindrical bracing frame 1 is placed on balance 5 through metal check board 4；The height sum of interior cylindrical bracing frame 1 and balance 5 is more than the height of outer cylindrical brace frame 2；Interior cylindrical bracing frame 1, outer cylindrical brace frame 2, band mesh metal grid 3, metal check board 4 and balance 5 are arranged at alternating temperature and get wet in case 9；Side slope surface soil sample to be measured is placed on band mesh metal grid 3.
Holder combination: be made up of interior cylindrical bracing frame and outer cylindrical brace frame.Wherein the height of interior cylindrical bracing frame more than outer cylindrical brace more than frame 5cm, need to not contact with interior cylindrical bracing frame with the soil property that guarantee falls plus the height of balance；The floor space of interior cylindrical bracing frame should be less than the area of balance bearing tray, the floor space of outer cylindrical brace frame should much larger than balance floor space, so that balance can weigh the quality of interior cylindrical bracing frame, the quality of outer cylindrical brace frame but can not be weighed.
Band mesh metal grid: screening area is generally 1cm2(can be bigger, do not allow too small), grid be that metal steel wire weld forms, smooth surface, and cross sectional shape is circular (not being preferably rectangle)；
Circular metal plate: there are four circular ports and give the traverse of interior cylindrical bracing frame.Area need to much larger than band mesh metal grid.
Balance: separate type weighing device, is made up of weighing platform 6, data connecting line 7, automatic acquisition and recording instrument 8, and weighing platform 6 is connected with automatic acquisition and recording instrument 8 by data connecting line 7.Range 1 10kg of balance 5, precision is 0.01g, and the automatic record time is 7d, and record interval is 5min/ time every time.
Alternating temperature gets wet case: for computer controlled temperature and humidity scalable instrument, it may be achieved the continuous periodic cycle of temperature and humidity, temperature controlling range is-40 DEG C 100 DEG C, humid control scope 20% 98%RH.
The exterior support frame of holder combination is positioned over alternating temperature and gets wet in case, balance is positioned over the center in exterior support frame, interior shelf is positioned on balance bearing platform, and circular metal plate is positioned over external support top of support, and band mesh metal grid is positioned in interior shelf.
Soil-slope provided by the present invention is the measuring method of corrosion resistance under corroding peeling conditions, comprises the following steps:
First cylindrical support frame 2 is positioned over alternating temperature and gets wet in case, balance is positioned in cylindrical support frame 1, then being positioned on balance bearing platform by cylindrical support frame 1, metal check board is positioned over cylindrical support frame 2 end face, and band mesh metal grid is positioned on cylindrical support frame 1.
1, gather soil body soil sample, in sampling process soil sample must not pressurized, by squeeze and turned round, avoid flutter failure soil structures in transportation.Soil body soil sample cuts soil, generally should take more than 6 pieces, the length of side square more than 50mm.Use balance measurement soil sample temporal quality m1Respectively 305g, 410g, 352g, 368g, 341g and 385g, sample is positioned on band mesh metal grid.
2, assembling a whole set of instrument, now balance reading zero or peeling, be then positioned over soil sample on band mesh metal grid.
3, alternating temperature is got wet case water tank and fill water, open switch, in the light of actual conditions or test requirements document adjust humiture Changing Pattern, rapid testing procedure is generally recommended for simplifying workload, the i.e. room test simulation engineering environmental change of a year by experiment in week age, thus realizing in natural conditions, soil-slope is corroded the measurement of quality of soil sample change under peeling conditions.The test period of rapid testing procedure is generally one week, and the long-term erosion peeling conditions test period of simulation side slope can increase by three-four cycles in right amount, and this test period is decided to be five weeks.In a complete cycle, it is consistent with side slope region historical high temperature that alternating temperature gets wet case maximum temperature, and minimum temperature is consistent with side slope region historical low temperature, and it is sinusoidal that temperature changes over figure；Most high humility is consistent with side slope region historical high humidity, minimum humidity is consistent with side slope region historical low humidity, it is consistent with region that humidity changes over rule, is generally sinusoidal or trapezoidal for south, is generally the shape of a saddle for the north.In the light of actual conditions or test requirements document adjust humiture Changing Pattern, recording balance is at the reading m of interval (being generally 5min or 10min)tRespectively 263.2g, 365.3g, 302.0g, 324.0g, 303.5g and 346.6g.To be tested end reads data m2.Owing to the record time is longer, and recording interval is 5min/ time, and data volume is huge, provides partial results as follows in units of week.
4, side slope soil property can obtain with aforementioned formula (1), (2) and (3) calculating in the peeling degree of alternation of wetting and drying situation.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all any amendment, equivalent replacement and improvement etc. made within the spirit and principles in the present invention, should be included within protection scope of the present invention.
Claims (10)
1. soil-slope measurement apparatus of corrosion resistance under corroding peeling conditions, it is characterised in that: described soil-slope measurement apparatus of corrosion resistance under corroding peeling conditions includes interior cylindrical bracing frame (1), outer cylindrical brace frame (2), band mesh metal grid (3), metal check board (4), balance (5) and alternating temperature and gets wet case (9)；The top of described interior cylindrical bracing frame (1) is provided with mesh metal grid (3)；The top of described outer cylindrical brace frame (2) is provided with metal check board (4)；Described outer cylindrical brace frame (2) covers in the outside of balance (5)；Described interior cylindrical bracing frame (1) is placed on balance (5) through metal check board (4)；The height sum of described interior cylindrical bracing frame (1) and balance (5) is more than the height of outer cylindrical brace frame (2)；Described interior cylindrical bracing frame (1), outer cylindrical brace frame (2), band mesh metal grid (3), metal check board (4) and balance (5) are arranged at alternating temperature and get wet in case (9)；Side slope surface soil sample to be measured is placed on band mesh metal grid (3).
2. soil-slope according to claim 1 measurement apparatus of corrosion resistance under corroding peeling conditions, it is characterised in that: the height sum of described interior cylindrical bracing frame (1) and balance (5) is at least above the height 5cm of outer cylindrical brace frame (2).
3. soil-slope according to claim 1 and 2 measurement apparatus of corrosion resistance under corroding peeling conditions, it is characterised in that: described balance (5) is separate type weighing device；Described balance (5) includes weighing platform (6), data connecting line (7) and automatic acquisition and recording instrument (8)；Described interior cylindrical bracing frame (1) is placed on the weighing platform (6) of balance (5) through metal check board (4)；Described automatic acquisition and recording instrument (8) is placed in alternating temperature and gets wet case (9) outside；Described weighing platform (6) is connected with automatic acquisition and recording instrument (8) by data connecting line (7).
4. soil-slope according to claim 3 measurement apparatus of corrosion resistance under corroding peeling conditions, it is characterised in that: the floor space of described interior cylindrical bracing frame (1) is less than the area of the weighing platform (6) of balance (5)；The floor space of described outer cylindrical brace frame (2) gets wet the space floor space in case (9) much larger than the weighing platform (6) of balance (5) at alternating temperature.
5. soil-slope according to claim 4 measurement apparatus of corrosion resistance under corroding peeling conditions, it is characterised in that: the area of described metal check board (4) is much larger than the area with mesh metal grid (3).
6. soil-slope according to claim 5 measurement apparatus of corrosion resistance under corroding peeling conditions, it is characterised in that: the described area with the single mesh in mesh metal grid (3) is not less than 1cm2It is, described that with mesh metal grid (3), to be cross section be that circular metal steel wire weld forms.
7. soil-slope according to claim 6 measurement apparatus of corrosion resistance under corroding peeling conditions, it is characterised in that: the range of described balance (5) is 1-10kg；The precision of described balance (5) is 0.01g；The automatic record time of described automatic acquisition and recording instrument (8) is 7d；Automatically the interval of time that records of described automatic acquisition and recording instrument (8) is 1-5min/ time.
8. soil-slope according to claim 7 measurement apparatus of corrosion resistance under corroding peeling conditions, it is characterised in that: it is-40 DEG C 100 DEG C that described alternating temperature gets wet the temperature controlling range of case (9)；It is 20%RH 98%RH that described alternating temperature gets wet the humid control scope of case (9).
9. one kind is corroding the measuring method of the measurement apparatus of corrosion resistance under peeling conditions based on soil-slope as claimed in claim 8, it is characterised in that: described measuring method comprises the following steps:
1) measurement apparatus is built according to soil-slope as claimed in claim 8 measurement apparatus of corrosion resistance under corroding peeling conditions；
2) side slope surface soil sample to be measured is gathered；Described side slope surface soil sample to be measured must not pressurized, by squeeze and turned round；Described side slope surface soil sample to be measured is the soil sample cut on big block soil after the block greatly soil of side slope surface collection；The length of side of described side slope surface soil sample to be measured is more than 50mm；Side slope surface soil sample to be measured is placed on band mesh metal grid (3) at interior cylindrical bracing frame (1) top, reading at balance (5) makes zero or after peeling, measures side slope surface soil sample to be measured quality m before on-test1；
3) open alternating temperature and get wet case (9) switch, according to intending the engineering practice design experiment condition analyzed, periodically adjust alternating temperature and get wet the temperature of case (9) and humidity circulation change；In a complete cycle, it is consistent with the historical high temperature of side slope region that described alternating temperature gets wet the maximum temperature of case (9), it is consistent with the historical low temperature of side slope region that described alternating temperature gets wet the minimum temperature of case (9), and it is sinusoidal that described alternating temperature gets wet the time dependent figure of temperature of case (9)；The most high humility that described alternating temperature gets wet case (9) is consistent with the historical high humidity of side slope region, it is consistent with the historical low humidity of side slope region that described alternating temperature gets wet the minimum humidity of case (9), and it is sinusoidal, the trapezoidal or shape of a saddle that described alternating temperature gets wet the time dependent figure of case (9) humidity；
4) the side slope surface soil sample to be measured that the automatic acquisition and recording instrument (8) of balance (5) is automatically recorded in identical interval is testing ongoing instant quality mt, and the quality m that side slope surface soil sample to be measured is after off-test2, the relational expression of the described side slope surface soil sample to be measured total erosion peeling degree i under corroding peeling conditions is:
Wherein:
I is that total under corroding peeling conditions of side slope surface soil sample to be measured corrodes peeling degree；
m1It it is side slope surface soil sample to be measured quality before on-test；
m2It it is side slope surface soil sample to be measured quality after off-test；
Described side slope surface soil sample to be measured peels off degree i corroding under peeling conditions erosion in timetRelational expression is:
Wherein:
itIt is that degree is peeled off in side slope surface soil sample to be measured erosion in time under corroding peeling conditions；
m1It it is side slope surface soil sample to be measured quality before on-test；
mtThe side slope surface soil sample being to be measured is testing ongoing instant quality；
The t soil-slope time used by Rainfall simulator erosion situation；The function expression of described t is:
Wherein:
M is length is L, and the side slope surface soil sample to be measured that width is W allows incrustate gross mass；
The change function of quality of soil sample and the time being made instantly available in test, i.e. itDerivative to time t.
10. measuring method according to claim 9, it is characterised in that: described step 4) also include afterwards:
5) to step 4) experimental data that obtains is analyzed processing, the side slope surface soil sample to be measured same ENGINEERING POINT being participated in statistics is not less than 2 pieces, when result of the test extreme difference less than its meansigma methods 10% time, side slope surface soil sample to be measured peels off degree i in the erosion in time under corroding peeling conditions of the total peeling degree i of erosion corroded under peeling conditions or side slope surface soil sample to be measuredtTake the meansigma methods of result of the test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610278033.1A CN105738275B (en) | 2016-05-01 | 2016-05-01 | The measuring device and method of soil-slope corrosion resistance in the case where corroding peeling conditions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610278033.1A CN105738275B (en) | 2016-05-01 | 2016-05-01 | The measuring device and method of soil-slope corrosion resistance in the case where corroding peeling conditions |
Publications (2)
| Publication Number | Publication Date |
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| CN105738275A true CN105738275A (en) | 2016-07-06 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108344653A (en) * | 2018-04-19 | 2018-07-31 | 三峡大学 | Test the device and method that the soil body resists scouring capability |
| CN113866080A (en) * | 2021-09-28 | 2021-12-31 | 太原理工大学 | Test device and test method for simulating salt corrosion damage of porous medium material |
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| CN102445528A (en) * | 2010-09-10 | 2012-05-09 | 香港科技大学 | Humidity and osmotic suction-controlled box |
| CN103091240A (en) * | 2013-01-14 | 2013-05-08 | 北京林业大学 | Splash erosion tester and using method and application thereof |
| CN103472205A (en) * | 2013-09-03 | 2013-12-25 | 中国长江三峡集团公司 | Slope water-soil loss experiment device and method under combined extreme meteorological conditions |
| CN205607827U (en) * | 2016-05-01 | 2016-09-28 | 山西省交通科学研究院 | Measurement device for soil property side slope is anti aggressivity under erosion condition of peeling off |
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| RU2017407C1 (en) * | 1991-10-29 | 1994-08-15 | Чувашский сельскохозяйственный институт | Device for measuring potential of antierosion strength of soil |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108344653A (en) * | 2018-04-19 | 2018-07-31 | 三峡大学 | Test the device and method that the soil body resists scouring capability |
| CN113866080A (en) * | 2021-09-28 | 2021-12-31 | 太原理工大学 | Test device and test method for simulating salt corrosion damage of porous medium material |
| CN113866080B (en) * | 2021-09-28 | 2023-12-05 | 太原理工大学 | Salt corrosion damage test device and method for simulating porous medium material |
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| CN105738275B (en) | 2018-11-20 |
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