CN105866005B - A kind of intelligent test device, measurement method and evaluation method for soil body layering Penetration Signature analysis - Google Patents
A kind of intelligent test device, measurement method and evaluation method for soil body layering Penetration Signature analysis Download PDFInfo
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- CN105866005B CN105866005B CN201610343208.2A CN201610343208A CN105866005B CN 105866005 B CN105866005 B CN 105866005B CN 201610343208 A CN201610343208 A CN 201610343208A CN 105866005 B CN105866005 B CN 105866005B
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- 239000002689 soil Substances 0.000 title claims abstract description 92
- 238000012360 testing method Methods 0.000 title claims abstract description 88
- 230000035515 penetration Effects 0.000 title claims abstract description 32
- 238000011156 evaluation Methods 0.000 title claims abstract description 27
- 238000004458 analytical method Methods 0.000 title claims abstract description 21
- 238000000691 measurement method Methods 0.000 title claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 94
- 238000001764 infiltration Methods 0.000 claims abstract description 48
- 230000008595 infiltration Effects 0.000 claims abstract description 48
- 239000011521 glass Substances 0.000 claims abstract description 47
- 239000002184 metal Substances 0.000 claims abstract description 15
- 239000007921 spray Substances 0.000 claims abstract description 5
- 238000005259 measurement Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 12
- 230000035699 permeability Effects 0.000 claims description 10
- 230000004044 response Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 3
- 230000001133 acceleration Effects 0.000 claims description 2
- 238000002474 experimental method Methods 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims description 2
- 230000005484 gravity Effects 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 239000012466 permeate Substances 0.000 claims description 2
- 238000012545 processing Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000013480 data collection Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 229920000965 Duroplast Polymers 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- HPNSNYBUADCFDR-UHFFFAOYSA-N chromafenozide Chemical compound CC1=CC(C)=CC(C(=O)N(NC(=O)C=2C(=C3CCCOC3=CC=2)C)C(C)(C)C)=C1 HPNSNYBUADCFDR-UHFFFAOYSA-N 0.000 description 1
- 239000005343 cylinder glass Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000007115 recruitment Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000010200 validation analysis Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/0806—Details, e.g. sample holders, mounting samples for testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
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- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
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- Life Sciences & Earth Sciences (AREA)
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- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention relates to a kind of intelligent test devices for soil body layering Penetration Signature analysis, it is characterized in that, including holding native unit, water supply device and intelligence test unit, the native unit of the appearance includes cylindrical glass cartridge, infiltration valve, cylindrical base, soakaway trench and metal perforated plate；Water supplying unit includes that constant voltage water pump, water pipe, spray head are sequentially connected；Intelligence test unit includes moisture sensor, infiltration quantity sensor and water pressure sensor and is connect respectively by signal receiver with computer；The water supplying unit is located at the surface for holding native unit；The soil body layered structure of multiple double altitudes is equipped in the cylindrical glass cartridge from bottom to top, moisture sensor, infiltration quantity sensor and water pressure sensor are respectively equipped on each inner sidewall layered.The present invention can be easy and accurately the test soil body is layered Penetration Signature situation, and provides the positioning accuracy, measurement method and evaluation method of system, suitable for substituting the existing product of this field.
Description
Technical field
The invention belongs to results of permeability tests studying technological domains, are layered Penetration Signature for the soil body more particularly to one kind
Intelligent test device, measurement method and the evaluation method of analysis.
Background technique
It analyzes according to statistics, the accident occurred in most of geological disasters and geotechnical engineering is all related with water in soil.Water in soil
Increase the matric suction of unsaturated soil can be made to fall sharply；The softening of part ground, native structure are destroyed；It is also possible to when seepage flow occurs
Due to penetration effect and increase many unfavorable factors.Mainly there is constant head infiltration in laboratory to the Penetration Signature test of soil at present
Test and variable head permeability test thoroughly, traditional permeability test, sandy soil and cohesive soil needs separate to do, and can not achieve and are
Unearthed Penetration Signature is tested on a kind of instrument and common results of permeability tests cannot test the Penetration Signature of layered soil.Soil
Water content be the aqueous degree of mark soil an important physical index, and common results of permeability tests is unable to real-time testing
Water content before soil layer saturation.A kind of " the earth material Penetration Signature intelligence of one kind disclosed in Chinese patent application 201220321449.4
Test macro ", although it has data collection system, in constant head permeability test and variable head permeability test in one, also
It is to have the disadvantage that first is that can not achieve the layering of the soil body, does not monitor the water flow for crossing soil layer cross section when the test of each layer soil
Amount；Second is that each layer soil is saturated the variation of preceding moisture content during test unable to monitor.Chinese patent application 201220655588.0
A kind of disclosed one kind " novel constant head permeameter ", although it realizes the layering to the soil body, but has the disadvantage that
First is that the instrument is only used for sandy soil, the Penetration Signature of cohesive soil cannot be tested, it is single to the Property requirements of soil；Two
It is the absence of data collection system, the water flow by each layer soil cross section cannot be tested during the test.
In conclusion exploring, a kind of collection reliable performance, intelligence degree are high, accuracy of observation is high, data volume is sufficient, using letter
It just is a urgent task with the test device of the cost novel soil body layering Penetration Signature analysis being integrated such as controllable.
Summary of the invention
It is a kind of special for soil body layering infiltration the purpose of the present invention is being provided to overcome the shortcomings of the prior art
Property analysis intelligent test device, measurement method and evaluation method, the present invention can it is easy and accurately test the soil body layering
Penetration Signature situation, and the positioning accuracy, measurement method and evaluation method of system are provided, suitable for substituting the existing production of this field
Product.
A kind of intelligent test device for soil body layering Penetration Signature analysis proposed according to the present invention, feature exist
In, including hold native unit, water supply device and intelligence test unit, the native unit of appearances include cylindrical glass cartridge, the valve that seeps water,
Cylindrical base, soakaway trench and metal perforated plate；The top of cylindrical base is arranged in the cylindrical glass cartridge, the cylinder glass
The bottom of glass cylinder is equipped with metal perforated plate, and the axially outer side of cylindrical glass cartridge is equipped with the infiltration valve of connection soakaway trench；For
Water unit includes that constant voltage water pump, water pipe, spray head are sequentially connected；Intelligence test unit includes moisture sensor, water percolating capacity sensing
Device and water pressure sensor are simultaneously connect by signal receiver with computer respectively；The water supplying unit, which is located at, is holding native unit just
Top；The soil body layered structure of multiple double altitudes is equipped in the cylindrical glass cartridge from bottom to top, it is each layered
Moisture sensor, infiltration quantity sensor and water pressure sensor are respectively equipped on inner sidewall.
The realization principle of intelligent test device of the invention is: the present invention is in use, and filling soil sample is placed in appearance first
In the cylindrical glass cartridge of native unit, using Darcy's law as foundation, opening constant voltage water pump enables nozzle to cylindrical glass cartridge
Water flow is injected, time of penetration terminates up to permeating since external observation and recording each layer soil, connects each soakaway trench by graduated cylinder and seeps
Water out is compared with the time and flow recorded after the data acquisition process of intelligence test unit, is provided survey
Try the range of evaluation.
Its remarkable advantage is the present invention compared with prior art:
First is that the present invention it is existing can to have filled up this field so that easy and accurately the soil body is layered infiltration situation in test cabinet
There is the blank of soil body layering Penetration Signature monitoring device.
Second is that the present invention can monitor stratified soil moisture content before saturation and real-time monitoring point by intelligent test device
Water flow and water pressure by each layer cross section of layer soil body during permeability test, in its positioning accuracy, measurement method
There is significant superiority with evaluation method aspect.
Third is that the present invention can not only test the Penetration Signature of sandy soil, but also the Penetration Signature of cohesive soil can be tested, to soil
Body type it is adaptable.
Fourth is that it is proposed by the present invention it is a kind of for the soil body layering Penetration Signature analysis intelligent test device, measurement method and
Evaluation method is complete integrated indoor monitoring test macro, easy to operate, quick, and test is accurate, reliable, is both saved
A large amount of human cost, and saved time cost.Suitable for substituting the existing product of this field.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of test device for soil body layering Penetration Signature analysis proposed by the present invention.
Fig. 2 is the structural schematic diagram of water supply device proposed by the present invention.
Fig. 3 is the native apparatus structure schematic diagram of appearance proposed by the present invention.
Fig. 4 is intelligent test device structural schematic diagram proposed by the present invention.
Specific embodiment
A specific embodiment of the invention is described in further detail with reference to the accompanying drawings and examples.
In conjunction with Fig. 1-4, a kind of intelligent test device for soil body layering Penetration Signature analysis proposed by the present invention, including
Hold native unit, water supply device and intelligence test unit, the native unit of appearances include cylindrical glass cartridge (4), seep water valve (5),
Cylindrical base (9), soakaway trench (6) and metal perforated plate (11)；The cylindrical glass cartridge (4) is arranged in cylindrical base (9)
Top, the bottom of the cylindrical glass cartridge (4) is equipped with metal perforated plate (11), in the axially outer side of cylindrical glass cartridge (4)
Infiltration valve (5) equipped with connection soakaway trench (6)；Water supplying unit includes that constant voltage water pump (1), water pipe (2), spray head (3) successively connect
It connects；Intelligence test unit includes moisture sensor (7), infiltration quantity sensor (8) and water pressure sensor (12) and leads to respectively
Signal receiver (13) is crossed to connect with computer (10)；The water supplying unit is located at the surface for holding native unit；The cylinder
The soil body layered structure of multiple double altitudes is equipped in glass infuser (4) from bottom to top, is distinguished on each inner sidewall layered
Equipped with moisture sensor (7), infiltration quantity sensor (8) and water pressure sensor.
Embodiment 1.It is proposed by the present invention it is a kind of for the soil body layering Penetration Signature analysis intelligent test device it is main
The design parameter of component and requirement are further disclosed directly below:
The material of cylindrical glass cartridge (4) of the present invention is transparent organic glass, is highly 1m, internal diameter 20cm；
It is 2cm that the bottom of the cylindrical glass cartridge (4), which is equipped with to the height of recessed groove, the groove,；The metal perforated plate (11)
The distance between cylindrical glass cartridge (4) bottom is 2cm, and the diameter of metal perforated plate (11) is 19.8cm, the internal diameter in hole is
2mm；The side of the cylindrical glass cartridge (4) is equipped with the infiltration valve (5) that multiple bores are 0.5cm, with 8-10 filtration valve
Door (5) is preferred, and the present embodiment 1 uses 9 infiltration valves (5), and the distance between two adjacent infiltration valves (5) are
12cm；It is 3cm the distance between at the top of the infiltration valve (5) of the topmost and cylindrical glass cartridge (4)；The infiltration of lowest part
The distance between valve (5) and bottom portion of groove are 1cm；The soakaway trench (6) that each infiltration valve (5) external length is 1.5m, the infiltration
Plastic flexible pipe can be used in water pipe (6)；Moisture sensor (7) is set to the inner left wall of cylindrical glass cartridge (4), and seep water flow
Sensor (8) and water pressure sensor (12) are respectively arranged at the right side inner wall of cylindrical glass cartridge (4), each sensing
Device is connected with the solum in the soil body layered structure of each double altitudes；The material of the constant voltage water pump (1) and spray head (3)
Matter is metal material, and the material of water pipe (2) is duroplasts；HX49 series can be used in the moisture sensor (7), and seep water flow
FTB300 series can be used in sensor (8), and PX81 series can be used in water pressure sensor (12), and signal receiver (13) can be used
Dell desktop computer etc. can be used in OM series, computer (10).
Embodiment 2.A kind of measurement of intelligent test device for soil body layering Penetration Signature analysis proposed by the present invention
Method, which is characterized in that comprise the following steps that
Step 1, intelligent test device is assembled: it is first that cup dolly (9) are horizontally disposed, the cylindrical glass of native unit will be held
Cylinder (4) is fixed on cup dolly (9), and metal perforated plate (11) is horizontally set on the 2cm apart from cylindrical glass cartridge (4) bottom
Place, the soakaway trench (6) closely connect with each infiltration valve (5)；By water supply device constant voltage water pump (1), water pipe (2), nozzle
(3) it is sequentially connected, which is set to the surface of cylindrical glass cartridge (4)；In the cylindrical glass cartridge (4) from lower and
It is equipped with the soil body layered structure of multiple double altitudes, is respectively equipped with moisture sensor on each inner sidewall layered
(7), seep water quantity sensor (8) and water pressure sensor；The moisture sensor (7), infiltration quantity sensor (8) and water pressure
Sensor (12) is also connect by signal receiver (13) with computer (10) respectively；
Step 2, check intelligent test device state: cup dolly (9) keeps horizontally disposed；Soakaway trench (6) and each infiltration
Penstock (5) is reliably connected；Water supplying unit can be normally discharged, and constant voltage water pump (1), water pipe (2), nozzle (3) successively reliably connect
It connects and without gas leakage；Metal perforated plate (11) is horizontally disposed and without inclination；Described includes moisture sensor (7), infiltration quantity sensor
(8), the intelligence test unit normal operation of water pressure sensor (12), signal receiver (13) and computer (10) composition；
Step 3, it places test soil sample: test soil sample layering being put into cylindrical glass cartridge (4), from cylindrical glass cartridge
(4) outside can be clearly seen that the layering situation of test soil sample, after every layer of test soil sample is put well, hit real to scheduled density；
Opening water supplying unit can normally be discharged and without gas leak phenomenon；The moisture sensor (7), infiltration quantity sensor (8) and water
The data of acquisition are sent into computer (10) processing by signal receiver (13) respectively by pressure sensor (12), finally by calculating
Machine (10) shows data；
Step 4, testing experiment: opening constant voltage water pump (1) makes nozzle (3) inject water flow to cylindrical glass cartridge (4), respectively
Layer soil sample starts to permeate, and first observes the water-cut variation situation shown on computer (10), until each layer soil sample reaches saturation, then
The pressure changing shown in observation computer (10)；At the time of recording each layer soil sample and start infiltration, and each infiltration is connect with graduated cylinder
Water flow in water pipe (6)；According to formula
The infiltration coefficient of each layer soil sample can be obtained, in which: F is water pressure, ρ is water density, g are acceleration of gravity, h is water
Pressure height, k are infiltration coefficient, Q is water percolating capacity, L is soil layer height, A is soil layer cross-sectional area, Δ h is difference in height, t is the time；
Step 5, estimation of stability: infiltration records the time and graduated cylinder is taken to connect each soakaway trench since each layer soil sample of external observation
(6) water oozed out, is compared with the time and flow recorded after the data acquisition process of intelligence test unit, is mentioned
For the range of test evaluation.
Embodiment 3.A kind of measurement of intelligent test device for soil body layering Penetration Signature analysis proposed by the present invention
The evaluation method of method, which is characterized in that including following Basic Evaluation content:
Evaluation 1, precision: the error of water and graduated cylinder water receiving amount that infiltration quantity sensor measures is 26-30 points, and measurement misses
Difference≤1%；Error is 21-25 points, measurement error≤2%；Error is 11-20 points, measurement error≤5%；Error is 0-
10 points, measurement error > 5%；
The time difference is reacted in evaluation 2: infiltration quantity sensor timing is 26-30 points with manual time-keeping error, response error≤
2s；Error is 21-25 points, response error≤5s；Error is 11-20 points, response error≤10s；Error is 0-10 points, instead
Answer error > 10s；
Evaluation 3, specificity: error is 16-20 points, is suitable for all soil samples；Error is 11-15 points, is suitable for sand
Property soil and cohesive soil；Error is 6-10 points, is only applicable to sandy soil or cohesive soil；Error is 0-5 points, and any soil is all uncomfortable
It closes；
Evaluation 4, temperature influence: error is 16-20 points, is barely affected；Error is 11-15's point, it is impacted compared with
It is small；Error is 6-10 points, impacted small；Error is 0-5 points, impacted larger；
Table 1, permeameter effect score by rules:
Comprehensive marking is carried out according to the above Basic Evaluation content and obtains score summation, if:
(1) score 85-100/, then the test device be suitable for results of permeability tests；
(2) score 75-84/, then the test device need part modify；
(3) score 60-74/, then the test device needs to modify test philosophy；
(4) score is lower than 60 points, then the test device is not applicable；
Table 2, permeameter recruitment evaluation table:
Finally, calculating total score.
All explanations not related to belong to techniques known in a specific embodiment of the invention, can refer to known skill
Art is implemented.
The present invention achieves satisfied trial effect through validation trial.
The above specific embodiment and embodiment are to proposed by the present invention a kind of for soil body layering Penetration Signature analysis
Intelligent test device, measurement method and evaluation method technical idea specific support, protection of the invention cannot be limited with this
Range, all any equivalent variationss or equivalent according to the technical idea provided by the invention, done on the basis of the technical program
Change, still fall within technical solution of the present invention protection range.
Claims (7)
1. a kind of measurement method of the intelligent test device for soil body layering Penetration Signature analysis, the intelligent test device,
Including holding native unit, water supply device and intelligence test unit, the native unit of the appearance includes cylindrical glass cartridge (4), infiltration valve
(5), cylindrical base (9), soakaway trench (6) and metal perforated plate (11)；The cylindrical glass cartridge (4) is arranged in cylindrical base
(9) bottom on top, the cylindrical glass cartridge (4) is equipped with metal perforated plate (11), the axially outer side of cylindrical glass cartridge (4)
It is equipped with the infiltration valve (5) of connection soakaway trench (6)；Water supplying unit include constant voltage water pump (1), water pipe (2), spray head (3) successively
Connection；Intelligence test unit includes moisture sensor (7), infiltration quantity sensor (8) and water pressure sensor (12) and difference
It is connect by signal receiver (13) with computer (10)；The water supplying unit is located at the surface for holding native unit；The cylinder
The soil body layered structure of multiple double altitudes is equipped in shape glass infuser (4) from bottom to top, is divided on each inner sidewall layered
It She You not moisture sensor (7), infiltration quantity sensor (8) and water pressure sensor (12)；
It is characterized in that, the measurement method comprises the following steps that
Step 1, intelligent test device is assembled: it is first that cup dolly (9) are horizontally disposed, the cylindrical glass cartridge of native unit will be held
(4) it being fixed on cup dolly (9), metal perforated plate (11) is horizontally set at the 2cm apart from cylindrical glass cartridge (4) bottom,
The soakaway trench (6) closely connect with each infiltration valve (5) hole；By water supply device constant voltage water pump (1), water pipe (2), nozzle
(3) it is sequentially connected, which is set to the surface of cylindrical glass cartridge (4)；In the cylindrical glass cartridge (4) from lower and
It is equipped with the soil body layered structure of multiple double altitudes, is respectively equipped with moisture sensor on each inner sidewall layered
(7), seep water quantity sensor (8) and water pressure sensor；The moisture sensor (7), infiltration quantity sensor (8) and water pressure
Sensor (12) is also connect by signal receiver (13) with computer (10) respectively；
Step 2, check intelligent test device state: cup dolly (9) keeps horizontally disposed；Soakaway trench (6) and each filtration valve
Door (5) is reliably connected；Water supplying unit can be normally discharged, constant voltage water pump (1), water pipe (2), nozzle (3) be successively reliably connected and
Without gas leakage；Metal perforated plate (11) is horizontally disposed and without inclination；It is described include moisture sensor (7), infiltration quantity sensor (8),
The intelligence test unit normal operation of water pressure sensor (12), signal receiver (13) and computer (10) composition；
Step 3, it places test soil sample: test soil sample layering being put into cylindrical glass cartridge (4), from cylindrical glass cartridge (4)
Outside can be clearly seen that the layering situation of test soil sample, after every layer of test soil sample is put well, hit reality to scheduled density；It opens
Water supplying unit can be normally discharged and without gas leak phenomenon；The moisture sensor (7), infiltration quantity sensor (8) and water pressure
The data of acquisition are sent into computer (10) processing by signal receiver (13) respectively by sensor (12), finally by computer
(10) data are shown；
Step 4, testing experiment: opening constant voltage water pump (1) makes nozzle (3) inject water flow, each layer soil to cylindrical glass cartridge (4)
Sample starts to permeate, and first observes the water-cut variation situation shown on computer (10), until each layer soil sample reaches saturation, then observes
The pressure changing shown on computer (10)；At the time of recording each layer soil sample and start infiltration, and each soakaway trench is connect with graduated cylinder
(6) water flow in；According to formula:
The infiltration coefficient of each layer soil sample can be obtained, in which: F is water pressure, ρ is water density, g are acceleration of gravity, h is hydraulic pressure height
Degree, k are infiltration coefficient, Q is water percolating capacity, L is soil layer height, A is soil layer cross-sectional area, Δ h is difference in height, t is the time；
Step 5, estimation of stability: infiltration records the time and graduated cylinder is taken to connect each soakaway trench (6) since each layer soil sample of external observation
The water of exudation is compared with the time and flow recorded after the data acquisition process of intelligence test unit, is provided
The range of test evaluation.
2. a kind of measurement side of intelligent test device for soil body layering Penetration Signature analysis according to claim 1
Method, which is characterized in that the material of the cylindrical glass cartridge (4) is transparent organic glass, is highly 1m, internal diameter 20cm.
3. a kind of measurement side of intelligent test device for soil body layering Penetration Signature analysis according to claim 2
Method, which is characterized in that it is 2cm that the bottom of the cylindrical glass cartridge (4), which is equipped with to the height of recessed groove, the groove,.
4. a kind of measurement side of intelligent test device for soil body layering Penetration Signature analysis according to claim 3
Method, which is characterized in that the distance between the metal perforated plate (11) and cylindrical glass cartridge (4) bottom are 2cm；Metal perforated plate
(11) diameter is 19.8cm, the internal diameter in hole is 2mm.
5. a kind of measurement side of intelligent test device for soil body layering Penetration Signature analysis according to claim 4
Method, which is characterized in that the side of the cylindrical glass cartridge (4) is equipped with the infiltration valve (5) that multiple bores are 0.5cm, adjacent
The distance between two infiltration valves (5) be 12cm.
6. a kind of measurement side of intelligent test device for soil body layering Penetration Signature analysis according to claim 5
Method, which is characterized in that be 3cm the distance between at the top of the infiltration valve (5) of the topmost and cylindrical glass cartridge (4)；Most
The distance between the infiltration valve (5) of lower part and bottom portion of groove are 1cm.
7. a kind of intelligent test device for soil body layering Penetration Signature analysis according to claim 1-6
The evaluation method of measurement method, which is characterized in that including following Basic Evaluation content:
Evaluation 1, precision: the error of water and graduated cylinder water receiving amount that infiltration quantity sensor measures is 26-30 points, measurement error≤
1%；Error is 21-25 points, measurement error≤2%；Error is 11-20 points, measurement error≤5%；Error is 0-10 points,
Measurement error > 5%；
The time difference is reacted in evaluation 2: infiltration quantity sensor timing is 26-30 points with manual time-keeping error, response error≤2s；Accidentally
Difference is 21-25 points, response error≤5s；Error is 11-20 points, response error≤10s；Error is 0-10 points, and reaction misses
Poor > 10s；
Evaluation 3, specificity: error is 16-20 points, is suitable for all soil samples；Error is 11-15 points, is suitable for sandy soil
And cohesive soil；Error is 6-10 points, is only applicable to sandy soil or cohesive soil；Error is 0-5 points, and any soil is unsuitable for；
Evaluation 4, temperature influence: error is 16-20 points, is barely affected；Error is 11-15 points, impacted smaller；Accidentally
Difference is 6-10 points, impacted small；Error is 0-5 points, impacted larger；
Comprehensive marking is carried out according to the above Basic Evaluation content and obtains score summation, if:
(1) score 85-100/, then the test device be suitable for results of permeability tests；
(2) score 75-84/, then the test device need part modify；
(3) score 60-74/, then the test device needs to modify test philosophy；
(4) score is lower than 60 points, then the test device is not applicable.
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| CN108195742A (en) * | 2018-02-12 | 2018-06-22 | 浙江大学 | A kind of device and method for quickly measuring a variety of sand infiltration coefficients |
| CN109406367A (en) * | 2018-12-06 | 2019-03-01 | 中国科学院武汉岩土力学研究所 | A kind of geotextiles silting and permeability simulation experimental device |
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