CN109521057A - Detection device and its working method in soil body physical parameter room - Google Patents
Detection device and its working method in soil body physical parameter room Download PDFInfo
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- CN109521057A CN109521057A CN201811210923.4A CN201811210923A CN109521057A CN 109521057 A CN109521057 A CN 109521057A CN 201811210923 A CN201811210923 A CN 201811210923A CN 109521057 A CN109521057 A CN 109521057A
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- soil body
- conductive sheet
- soil
- formed pipe
- physical parameter
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/041—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body
Abstract
Detection device and its working method in soil body physical parameter of the present invention room, the detector including soil body shaping mechanism and with the communication of soil body shaping mechanism；Wherein soil body shaping mechanism includes: soil body formed pipe；Conductive component, conductive component are two groups, and two groups of conductive components are oppositely arranged in soil body formed pipe.Beneficial effects of the present invention: indoor quickly detection can be carried out to the loose earth electrical parameter of different water cut, compactness and quickly makees relation curve, performance indicator when subgrade soils are on active service is ensure that, escorts for its actual use.Set up the indoor device for fast detecting based on electrical measurement to loose earth physical parameter, it is radiated current high-speed transit construction and many aspects of subgrade engineering in operation detects, ensure its performance safety, engineering risk is effectively reduced, is had a very important significance to promoting China's engineering safety to construct.By the refined gram force pipe punched by transparent and tube wall, establish based on electrical measurement to the device for fast detecting of loose earth physical parameter.
Description
Technical field
The present invention relates to field of civil engineering, and in particular, to a kind of soil body physical parameter room using electrical measuring systems
Interior detection device and its working method.
Background technique
The soil resistivity of characterization soil conductivity performance is research Soil Microstructure and physico-mechanical properties, metal soil
The important parameter of burn into electric system ground connection etc..Field condition generally use the equidistant four-electrode method of winner or
The methods of Schlumberger-Palmer unequal spacing four-electrode method measures apparent resistivity, then obtains through soil inverting
Soil resistivity layered structure.Pedotheque is often placed in soil case and is measured using direct method by laboratory.Power is used in the past
Learn experiment detection subgrade soils deformation, the present invention using a kind of soil body physical parameter indoor test method using electrical measurement method,
System and device indoor to highway railway bed soil electrical parameter progress under long service state can quickly detect and quick
Mapping ensure that performance indicator when subgrade soils are on active service, and escorts, realizes quick, safe and efficient for its actual use.
Summary of the invention
For the defects in the prior art, it is an object of the invention to propose detection device in a kind of soil body physical parameter room
And its working method.
In order to solve the above technical problems, detection device and its working method in soil body physical parameter of the present invention room, including soil
Body formed mechanism and the detector communicated with soil body shaping mechanism；Wherein
Soil body shaping mechanism includes:
Soil body formed pipe；
Conductive component, conductive component are two groups, and two groups of conductive components are oppositely arranged in soil body formed pipe.
Preferably, conductive component includes:
First conductive sheet, the first conductive sheet are arranged in soil body formed pipe；
Second conductive sheet, the second conductive sheet are arranged in soil body formed pipe；Wherein
Second conductive sheet and the first conductive sheet interval are arranged, the second conductive sheet relative to the first conductive sheet closer to the soil body at
The middle part of type pipe；
First conducting wire, the first conducting wire connect the first conductive sheet of two panels, and the first conducting wire is connect with detector；
Second conducting wire, the second conducting wire connect the second conductive sheet of two panels, and the second conducting wire is connect with detector.
Preferably, the both ends of the first conducting wire penetrate respectively from the both ends of soil body formed pipe, with the two of soil body formed pipe both ends
The connection of the first conductive sheet of piece；
Wire guide is equipped on the first conductive sheet, the both ends of the second conducting wire penetrate and wear from the both ends of soil body formed pipe respectively
The wire guide crossed on the first conductive sheet of two panels is connect with the second conductive sheet of two panels.
Preferably, the first conductive sheet and the second conductive sheet diameter are equal to the diameter of soil body formed pipe.
Preferably, two groups of conductive components divide equally the inside of soil body formed pipe along its length.
Preferably, immersion hole is equipped on the tube wall of soil body formed pipe.
The working method of detection device, includes the following steps: in a kind of soil body physical parameter room
Step 1, soil sample is put into soil body formed pipe；
Step 2, change Water Content Tests in Soil Samples in pipe；
Step 3, measurement obtains the physical parameter of soil sample.
Preferably, in step 1, soil sample dry to pulverize processing and be layered and hits real be put into soil body formed pipe.
Preferably, step 2 includes:
Step 2.1, enter moisture in soil body formed pipe by the immersion hole on soil body formed pipe；
Step 2.2, it wrap film and is rolled every two hours primary on the outside of soil body formed pipe.
Preferably, in step 3, to uniform moisture in soil sample, the physical parameter for obtaining soil sample is measured with winner four-electrode method.
Compared with prior art, beneficial effects of the present invention are as follows:
1, the present invention can carry out indoor quickly detection and quickly to the loose earth electrical parameter of different water cut, compactness
Make relation curve, ensure that performance indicator when subgrade soils are on active service, escorts for its actual use.
2, the present invention sets up the indoor device for fast detecting based on electrical measurement to loose earth physical parameter, is radiated and works as
Preceding high-speed transit construction and many aspects of subgrade engineering in operation detect, it is ensured that and engineering risk is effectively reduced in its performance safety,
It is had a very important significance to promoting China's engineering safety to construct.
3, the present invention is established based on electrical measurement by the refined gram force pipe punched by transparent and tube wall to loose earth physics
The device for fast detecting of parameter by soil compaction tubulature, changes moisture content, it is ensured that uniform moisture is distributed in soil in pipe
In body, and electrical parameter is measured by winner four-electrode method, determines the relationship of different water cut, the soil body of compactness and electrical parameter, reach
To the purpose of detection.
4, the present invention is for different water cut, the situation of the loose earth electrical parameters detection of compactness, such as long service
Subgrade soils detect under state, propose soil body forming module, refined gram force pipe insulation and transparent feature are made full use of, in traditional electrical measurement
On the basis of amount method, work system will test, punched using tube wall and change soil moisture content, winner four-electrode method is quickly examined
The electrical parameter information of the soil body is surveyed, and then improves detection order of accuarcy.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon.
Fig. 1 is structure of the detecting device schematic diagram in soil body physical parameter of the present invention room；
Fig. 2 is Water Content Tests in Soil Samples of the present invention, compactness, resistivity relation cloud atlas one；
Fig. 3 is Water Content Tests in Soil Samples of the present invention, compactness, resistivity relation cloud atlas two.
In figure:
1- soil body formed pipe 2- the first conductive sheet the second conductive sheet of 3-
4- the first conducting wire 5- the second conducting wire 6- immersion hole
7- electrical prospecting apparatus 8- power supply 9- wire guide
Specific embodiment
The present invention is described in detail combined with specific embodiments below.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field
For personnel, without departing from the inventive concept of the premise, several changes and improvements can also be made.These belong to the present invention
Protection scope.
As shown in Figure 1, structure of the detecting device in soil body physical parameter of the present invention room, includes soil sample device, conducting wire connection dress
It sets and electrical prospecting apparatus 7, power supply 8.Soil sample device includes the refined gram force soil sample formed pipe 1 that transparent and tube wall is handled；Conducting wire connection dress
It sets comprising the first conductive sheet 2 and the second conductive sheet 3, the first conductive sheet 2 and the second conductive sheet 3 have some strength and relatively thin, can
To be come into full contact with soil sample；Immersion hole 6 is beaten in refined 1 tube wall of gram force soil sample formed pipe processing, and the aperture in immersion hole 6 should both guarantee soil
Grain cannot be flowed out from pipe, and water is immersed from immersion hole 6；Electrical prospecting apparatus 7 is connected using winner four-electrode method.
Conducting wire is welded with every conductive sheet, specifically, the both ends of the first conducting wire 4 are worn from the both ends of soil sample formed pipe 1 respectively
Enter, connect with first conductive sheet of two panels 2 at soil sample formed pipe both ends；Wire guide 9, the second conducting wire 5 are equipped on the first conductive sheet 2
Both ends penetrate and pass through from the both ends of soil sample formed pipe 1 respectively the wire guide 9 on the first conductive sheet of two panels 2, with two panels second
Conductive sheet 3 connects.
Immersion hole 6 is beaten in refined 1 tube wall of gram force soil sample formed pipe, the diameter in immersion hole 6 should ensure that soil sample is not easy to flow out
And moisture easily enters；Diameter Ying Yuya gram force soil sample 1 internal diameter of formed pipe of first conductive sheet 2 and the second conductive sheet 3 is almost the same,
Both conductive sheet and soil sample contact area had been can guarantee in loading tube or can increase as far as possible；It is conductive for the first conductive sheet 2 and second
Piece 3 is put into position in pipe, and the first conductive sheet 2 should be made to be put into refined gram force soil sample formed pipe 1 close to end positions, remaining second conduction
Piece 3 is put into pipe close at pipe range one third and 2/3rds.
In actual mechanical process, after soil sample to be pulverized to simultaneously drying and processing completely, part soil sample vibration compaction test should be first taken
Device measures maximum dry density.The weight of refined gram force soil sample formed pipe 1 and the weight of conductive sheet are weighed before soil sample tubulature, are surveyed after tubulature
Outlet pipe, conductive sheet and the total recast difference of soil sample obtain soil weight, obtain the volume of pipe by acrylic bore, pipe heavy soil is calculated
Sample dry density, the ratio between dry density and maximum dry density are compactness.Conductive sheet be typically chosen as with some strength and electric conductivity it is good
Good copper sheet.Change pipe in dry completely Water Content Tests in Soil Samples using package wet towel or sponge by the way of, rolling wet towel or
Person sponge immerses uniform moisture in tube wall immersion hole 9.Preferably, testing water used is pure water.On the other hand, rolling every time
It moves as retainer plate number, then wipes tube wall and weigh and immerse water weight, obtain Water Content Tests in Soil Samples.Preferably, to be distributed uniform moisture
In soil sample, it is horizontally arranged acrylic pipe along tube axis direction, the even power stranding of pipe is wrapped up with the wet towel for being impregnated with pure water and rolls three circles,
So that uniform moisture enters from pipe tap, refined gram force soil sample formed pipe 1 stands 12 hours, and the quiescent period rolled every two hours
It is dynamic primary.Preferably, to prevent moisture Influence of Evaporation Water Content Tests in Soil Samples, applied film wraps up refined gram force soil sample molding after adding the water
Pipe 1 is general to select preservative film.Preferably, soil sample can be arranged by the refined gram force soil sample formed pipe 1 of transparent insulation in the present invention
Compactness and tube wall soak hole 9 to change Water Content Tests in Soil Samples, and on the other hand, transparent refined gram force soil sample formed pipe 1 is to four-electrode method
Two pieces of conductive sheet distances make accurate measurement to calculate resistivity among pipe.
Preferred embodiment
Electrical prospecting apparatus 7 and measuring device connects using winner four-electrode method and measure soil sample electrical parameter, arrangement as shown in Figure 1,
Refined 1 diameter of gram force soil sample formed pipe is about 1/10th of overall length, diameter 46mm in this example, overall length 500mm, to guarantee to hit real soil
For sample without keeping refined gram force soil sample formed pipe 1 broken, tube wall should have certain thickness, but be so that tube wall be easy to punch should not be too
Thickness, thickness of pipe wall 2mm in this example.The first conductive sheet 2 and the second conductive sheet 3 use copper sheet in this example, and copper sheet has some strength, easily
In punching and electric conductivity it is good, this example using diameter 44mm with a thickness of 1mm copper sheet.Experiment is added water and uses pure water, excludes to lead
Electron ion influences.To be distributed in uniform moisture in soil sample, it is horizontally arranged acrylic pipe along tube axis direction, with being impregnated with pure water
Wet towel package manage the stranding of even power and roll three circles, wet towel should wrap up refined gram force soil sample formed pipe 1 enough, use water imbibition in this example
Good towel, length 700mm, width 240mm.Electrical prospecting apparatus 7 used in this example be multi-functional electric device 7, voltage measurement range ± 6V,
Voltage measurement accuracy ± 1%, current measuring range 0-5A, current measurement precision ± 10%, polarizability measurement accuracy ± 1%.
Specifically: electrical prospecting apparatus 7 being connect measurement soil sample electrical parameter using winner four-electrode method with measuring device, arrangement is such as
Shown in Fig. 1, refined gram force soil sample formed pipe 1 is horizontally arranged by when measurement.Complete drying soil is put into according to " geotechnological handbook " method
In ramming device, the soil sample maximum dry density is calculated.Weighing tube quality first before tubulature, after it will dry completely soil sample tubulature
Weighing tube and quality of soil sample are calculated pipe weight quality of soil sample, are calculated by refined 1 diameter of gram force soil sample formed pipe with overall length
Soil sample volume calculates density of soil sample with this, and the ratio between this density and maximum dry density are compactness.It is definite aqueous in pipe to obtain
Rate changing value rolls rear weighing tube quality with wet towel stranding every time, obtains water-cut variation value, then prevents water with preservative film package
Divide evaporation, measures electrical parameter with winner four-electrode method after 12 hours.Measurement finishes repetition and changes step after moisture content.
After acquiring data, according to moisture content and the corresponding electrical parameter values of compactness, establishes soil sample physical parameter and electricity is joined
Number relational graph, cloud atlas are as shown in Figure 2 and Figure 3.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited to above-mentioned
Particular implementation, those skilled in the art can make a variety of changes or modify within the scope of the claims, this not shadow
Ring substantive content of the invention.In the absence of conflict, the feature in embodiments herein and embodiment can any phase
Mutually combination.
Claims (10)
1. detection device in a kind of soil body physical parameter room, which is characterized in that formed including soil body shaping mechanism and with the soil body
The detector of mechanism communication；Wherein
Soil body shaping mechanism includes:
Soil body formed pipe；
Conductive component, conductive component are two groups, and two groups of conductive components are oppositely arranged in soil body formed pipe.
2. detection device and its working method in soil body physical parameter according to claim 1 room, which is characterized in that conductive
Component includes:
First conductive sheet, the first conductive sheet are arranged in soil body formed pipe；
Second conductive sheet, the second conductive sheet are arranged in soil body formed pipe；Wherein
Second conductive sheet and the first conductive sheet interval are arranged, and the second conductive sheet is relative to the first conductive sheet closer to soil body formed pipe
Middle part；
First conducting wire, the first conducting wire connect the first conductive sheet of two panels, and the first conducting wire is connect with detector；
Second conducting wire, the second conducting wire connect the second conductive sheet of two panels, and the second conducting wire is connect with detector.
3. detection device and its working method in soil body physical parameter according to claim 2 room, which is characterized in that first
The both ends of conducting wire penetrate from the both ends of soil body formed pipe respectively, connect with first conductive sheet of two panels at soil body formed pipe both ends；
Wire guide is equipped on the first conductive sheet, the both ends of the second conducting wire penetrate from the both ends of soil body formed pipe respectively and pass through two
Wire guide on the first conductive sheet of piece is connect with the second conductive sheet of two panels.
4. detection device and its working method in soil body physical parameter according to claim 2 room, which is characterized in that first
Conductive sheet and the second conductive sheet diameter are equal to the diameter of soil body formed pipe.
5. detection device and its working method in soil body physical parameter according to claim 1 room, which is characterized in that two groups
Conductive component divides equally the inside of soil body formed pipe along its length.
6. detection device and its working method in soil body physical parameter according to claim 1 room, which is characterized in that in soil
The tube wall of body formed pipe is equipped with immersion hole.
7. the working method of detection device in a kind of soil body physical parameter room, which comprises the steps of:
Step 1, soil sample is put into soil body formed pipe；
Step 2, change Water Content Tests in Soil Samples in pipe；
Step 3, measurement obtains the physical parameter of soil sample.
8. the working method of detection device in soil body physical parameter according to claim 7 room, which is characterized in that step 1
In, soil sample dry to pulverize processing and be layered and hits real be put into soil body formed pipe.
9. the working method of detection device in soil body physical parameter according to claim 7 room, which is characterized in that step 2
Include:
Step 2.1, enter moisture in soil body formed pipe by the immersion hole on soil body formed pipe；
Step 2.2, it wrap film and is rolled every two hours primary on the outside of soil body formed pipe.
10. the working method of detection device in soil body physical parameter according to claim 7 room, which is characterized in that step 3
In, to uniform moisture in soil sample, the physical parameter for obtaining soil sample is measured with winner four-electrode method.
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| CN201811210923.4A CN109521057A (en) | 2018-10-17 | 2018-10-17 | Detection device and its working method in soil body physical parameter room |
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Cited By (3)
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| CN110297071A (en) * | 2019-07-05 | 2019-10-01 | 上海交通大学 | Soil Parameters measurement method |
| CN110297017A (en) * | 2019-07-05 | 2019-10-01 | 上海交通大学 | Soil body electrical parameter spatial and temporal distributions indoor test system and working method under Frozen-thawed cycled |
| CN113484138A (en) * | 2021-08-24 | 2021-10-08 | 上海交通大学 | Rock slope damage accumulation evaluation method under complex load action based on electrical measurement |
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| CN110297017A (en) * | 2019-07-05 | 2019-10-01 | 上海交通大学 | Soil body electrical parameter spatial and temporal distributions indoor test system and working method under Frozen-thawed cycled |
| CN113484138A (en) * | 2021-08-24 | 2021-10-08 | 上海交通大学 | Rock slope damage accumulation evaluation method under complex load action based on electrical measurement |
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