CN113504269A - Experimental soil resistivity measuring device and measuring method thereof - Google Patents
Experimental soil resistivity measuring device and measuring method thereof Download PDFInfo
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- CN113504269A CN113504269A CN202110745469.8A CN202110745469A CN113504269A CN 113504269 A CN113504269 A CN 113504269A CN 202110745469 A CN202110745469 A CN 202110745469A CN 113504269 A CN113504269 A CN 113504269A
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- 239000002689 soil Substances 0.000 title claims abstract description 84
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000005259 measurement Methods 0.000 claims abstract description 15
- 239000000853 adhesive Substances 0.000 claims abstract description 12
- 230000001070 adhesive effect Effects 0.000 claims abstract description 12
- 238000002474 experimental method Methods 0.000 claims abstract description 7
- 239000012212 insulator Substances 0.000 claims description 16
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010291 electrical method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011545 laboratory measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000004088 simulation 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
- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
Abstract
A soil body resistivity measuring device for experiments and a measuring method thereof comprise a measuring fixing device and a resistivity measuring instrument, wherein the resistivity measuring instrument is used for measuring the resistivity of a soil body, the measuring fixing device comprises a measuring base, a plurality of vertical baffle frames are arranged on the measuring base, baffle clamping seats are arranged on the vertical baffle frames, the baffle clamping seats are connected with arc-shaped elastic baffles through transverse supporting rods, and the arc-shaped elastic baffles are arranged annularly; a supporting frame is arranged at the top of the vertical baffle frame, and driving equipment is arranged on the supporting frame and used for driving the conductive cover plate to move up and down; the conductive cover plate and the measuring base are electrically connected with the resistivity measuring instrument through a lead. The measuring base, the conductive cover plate and the arc-shaped elastic baffles can fix the soil body to be measured, so that the soil body to be measured cannot deform in the measuring process; the position of the conductive cover plate is adjusted to ensure that the conductive adhesive is in good contact with the soil body to be measured, and the measurement error is reduced.
Description
Technical Field
The invention belongs to the field of resistivity detection equipment, and particularly relates to a soil body resistivity measuring device for experiments and a measuring method thereof.
Background
In the research of landslide disasters, when electrical methods are used for exploring influence of various characteristics of soil bodies on conductivity, a sampling simulation method is generally adopted for measurement because natural slope bodies are inconvenient to directly measure; while in the laboratory measurement of compacted soil conductivity, the following problems are easily encountered:
1. because the metal cover plate is not compacted or the conductive gel is in contact with the conductive gel during measurement, measurement errors are generated;
2. a single measuring module cannot adapt to soil bodies of different sizes.
Disclosure of Invention
In view of the technical problems in the background art, the experimental soil resistivity measuring device and the measuring method thereof provided by the invention have the advantages that the measuring base, the conductive cover plate and the arc-shaped elastic baffles can fix the measured soil body, so that the measured soil body is prevented from deforming in the measuring process; the position of the conductive cover plate is adjusted to ensure that the conductive adhesive is in good contact with the soil body to be measured, and the measurement error is reduced.
In order to solve the technical problems, the invention adopts the following technical scheme to realize:
a soil body resistivity measuring device for experiments and a measuring method thereof comprise a measuring fixing device and a resistivity measuring instrument, wherein the resistivity measuring instrument is used for measuring the resistivity of a soil body, the measuring fixing device comprises a measuring base, a plurality of vertical baffle frames are arranged on the measuring base, baffle clamping seats are arranged on the vertical baffle frames, the baffle clamping seats are connected with arc-shaped elastic baffles through transverse supporting rods, and the arc-shaped elastic baffles are arranged annularly; a supporting frame is arranged at the top of the vertical baffle frame, and driving equipment is arranged on the supporting frame and used for driving the conductive cover plate to move up and down; the conductive cover plate and the measuring base are electrically connected with the resistivity measuring instrument through a lead.
In a preferred scheme, the measuring base comprises a conductive film, an insulator base and a cylindrical elastic buttress, the cylindrical elastic buttress is arranged at the bottom of the insulator base, the insulator base is of an annular structure, the conductive film is arranged in the middle of the upper surface of the insulator base, and the conductive film is electrically connected with the resistivity measuring instrument through a lead.
In the preferred scheme, the support frame comprises a fixed support connected with the vertical baffle frame, the fixed support is connected with a cross support structure, and the cross support structure is provided with a driving device.
In a preferable scheme, the driving device is used for driving the insulating lifting rod to move up and down, and the insulating lifting rod is connected with the conductive cover plate.
In a preferred scheme, the resistivity measuring instrument comprises a bottom sensing lead, a voltage booster, a top sensing lead and a measuring instrument body; the sensing circuit, the voltage booster, the top sensing lead, the measuring instrument body, the conductive bottom plate and the conductive cover plate are connected in series to form a measuring loop.
In a preferred scheme, the conductive bottom plate and the conductive cover plate are made of copper.
In the preferred scheme, the vertical baffle frame is provided with a threaded hole, and the baffle clamping seat is fixed at the threaded hole through a bolt.
In a preferred scheme, a plurality of baffle clamping seats are arranged on the vertical baffle frame, and a transverse support rod on each baffle clamping seat is connected with one arc-shaped elastic baffle.
In the preferred scheme, the heights of the arc-shaped elastic baffles on each vertical baffle frame are sequentially reduced from bottom to top; the arc elastic baffle is made of rubber, the transverse supporting rod is a square rod, a guide groove is formed in the transverse supporting rod, a fastening bolt is installed on the guide groove, a radial through hole is formed in a screw rod of the fastening bolt, a pull wire penetrates through the radial through hole, and two ends of the pull wire are connected with the outer wall of the arc elastic baffle respectively.
In the preferred scheme, the baffle clamping seat and the transverse supporting rod are fixed through a locking device; the baffle clamping seat is provided with a jack, the locking device comprises a bolt, the bolt is sleeved with a spring and is positioned in the jack, and the bottom of the bolt is contacted with the transverse supporting rod.
In a preferred embodiment, the measuring method of the experimental soil resistivity measuring device includes the following steps:
s1: compacting soil bodies compacted by cylinders with different radiuses and heights by using a soil compactor, and dividing the soil bodies into a plurality of groups of soil body samples;
s2: uniformly coating a proper amount of conductive adhesive on the conductive bottom plate and the conductive cover plate;
s3: pulling the bolt upwards to slide the transverse support rod on the vertical baffle plate frame, so that enough gaps are reserved beside the vertical baffle plate frame for placing soil body samples;
s4: placing a soil body sample in the middle of the measuring base, enabling the bottom conductive adhesive to fully contact the soil body sample, selecting the number of the arc-shaped elastic baffles according to the height of the soil body sample, and adjusting the radian of the arc-shaped elastic baffles according to the diameter of the soil body sample;
in this step, when adjusting arc elastic baffle radian, its step is: loosening the fastening bolt, moving the position of the fastening bolt, pulling the arc-shaped elastic baffle plate through the pull wire, enabling the arc-shaped elastic baffle plate to deform, and screwing the fastening bolt when the radian of the arc-shaped elastic baffle plate reaches a proper position, so that the position of the fastening bolt is fixed, and the radian of the arc-shaped elastic baffle plate is fixed;
s5: adjusting the horizontal position of the transverse supporting rod to ensure that the arc-shaped elastic baffle is fully attached to the side curved surface of the soil body sample, and loosening the bolt to fix the position of the transverse supporting rod;
s6: controlling the conductive cover plate to fully compact the soil by using driving equipment, and fully contacting the top conductive adhesive with the soil sample;
s7: automatically calculating the conductivity of a soil body sample by using a resistivity measuring instrument, and recording single group of data;
s8: and replacing soil body samples with different sizes, and repeating the steps S1-S7 to perform experiments to obtain multiple groups of data.
This patent can reach following beneficial effect:
the measuring base, the conductive cover plate and the arc-shaped elastic baffles can fix the soil body to be measured, so that the soil body to be measured cannot deform in the measuring process; the position of the conductive cover plate is adjusted to ensure that the conductive adhesive is in good contact with the soil body to be measured, and the measurement error is reduced.
The number of the arc-shaped elastic baffle plates can be selected according to the size of the soil body to be measured, soil body samples of various sizes can be measured, the application range is wide, and measurement data are more accurate.
The radian of the arc-shaped elastic baffle can be adjusted through the fastening bolt and the pull wire, so that the device can be suitable for soil body samples with various diameters.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is an overall structural view of the present invention;
FIG. 2 is a connection structure diagram of the vertical baffle holder and the baffle holder of the invention;
FIG. 3 is a view of the structure of the measuring base of the present invention;
FIG. 4 is a view of the structure of the stand of the present invention;
FIG. 5 is a diagram illustrating the installation effect of the resistivity tool of the present invention;
FIG. 6 is a first schematic view of the adjustment of the arcuate resilient stop of the present invention;
FIG. 7 is a second schematic view of the adjustment of the arcuate resilient stop of the present invention;
fig. 8 is a schematic view of the locking device of the present invention.
In the figure: the device comprises a measuring and fixing device 1, a resistivity measuring instrument 2, a measuring base 1.1, a fixing support 1.2, a driving device 1.3, a conductive cover plate 1.4, a bottom sensing lead 2.1, a voltage booster 2.2, a top sensing lead 2.3, a measuring instrument body 2.4, a conductive bottom plate 3, an insulator base 4, a cylindrical elastic buttress 5, a vertical baffle plate frame 6, a threaded hole 7, a baffle plate clamping seat 8, an arc-shaped elastic baffle plate 9, a transverse supporting rod 10, a cross supporting structure 11, an insulating lifting rod 12, a guide groove 13, a fastening bolt 14, a pull wire 15, a locking device 16, a plug pin 16.1, a spring 16.2 and a jack 17.
Detailed Description
The preferable scheme is as shown in fig. 1 to 8, the experimental soil body resistivity measuring device and the measuring method thereof comprise a measuring and fixing device 1 and a resistivity measuring instrument 2, wherein the resistivity measuring instrument 2 is used for measuring the resistivity of the soil body, the measuring and fixing device 1 comprises a measuring base 1.1, a plurality of vertical baffle frames 6 are arranged on the measuring base 1.1, baffle clamping seats 8 are arranged on the vertical baffle frames 6, the baffle clamping seats 8 are connected with arc-shaped elastic baffles 9 through transverse supporting rods 10, and the arc-shaped elastic baffles 9 are annularly arranged; the top of the vertical baffle frame 6 is provided with a support frame, the support frame is provided with a driving device 1.3, and the driving device 1.3 is used for driving the conductive cover plate 1.4 to move up and down; the conductive cover plate 1.4 and the measuring base 1.1 are electrically connected with the resistivity measuring instrument 2 through a lead.
The invention comprises a measuring and fixing device 1 and a resistivity measuring instrument 2; the measuring and fixing device 1 comprises a measuring base 1.1, a fixing support 1.2, a driving device 1.3, a conductive cover plate 1.4, a conductive bottom plate 3, an insulator base 4, a cylindrical elastic buttress 5, a vertical baffle frame 6, a threaded hole 7, a baffle clamping seat 8, an arc-shaped elastic baffle 9, a transverse supporting rod 10, a cross-shaped supporting structure 11 and an insulating lifting rod 12. The resistivity measuring instrument 2 comprises a bottom sensing lead 2.1, a voltage booster 2.2, a top sensing lead 2.3 and a measuring instrument body 2.4 for controlling the voltage booster 2.2 and a driving device 1.3.
The arc-shaped elastic baffle 9 is made of rubber and has insulating and elastic properties. The transverse supporting rod 10 is inserted in the baffle clamping seat 8.
Further, the measuring base 1.1 comprises a conductive film 3, an insulator base 4 and a cylindrical elastic buttress 5, the cylindrical elastic buttress 5 is arranged at the bottom of the insulator base 4, the insulator base 4 is of an annular structure, the conductive film 3 is arranged in the middle of the upper surface of the insulator base 4, and the conductive film 3 is electrically connected with the resistivity measuring instrument 2 through a lead.
The insulator base 4 in the middle of have circular fretwork design, the bottom is equipped with four cylindrical elasticity buttress 5. The bottom sensing lead 2.1 is directly connected with the conductive film 3 through a hollow insulator base.
Further, the support frame includes fixed bolster 1.2 of being connected with vertical baffle frame 6, and fixed bolster 1.2 is connected with cross bearing structure 11, is equipped with drive arrangement 1.3 on the cross bearing structure 11.
The top of the fixed support 1.2 is provided with a cross supporting structure 11, and the center position of the cross supporting structure is provided with a round hollow part. The driving device 1.3 is arranged on the cross-shaped supporting structure 11, and an insulating lifting rod 12 is arranged in the middle of the driving device; the insulating lifting rod 12 is connected with the conductive cover plate 1.4.
The drive device 1.3 is selected from: electric push rod, cylinder, oil cylinder, etc. or motor and worm gear reducer. The top sensing lead 2.3 is used for connecting with the conductive cover plate 1.4, and the connection form can be as follows: firstly, the conductive cover plate 1.4 is directly connected; second, the top sensing conductor 2.3 is disposed within the insulated lifter 12 and connected to the conductive patch 1.4.
Further, the driving device 1.3 is used for driving the insulating lifting rod 12 to move up and down, and the insulating lifting rod 12 is connected with the conductive cover plate 1.4.
Further, the resistivity measuring instrument 2 comprises a bottom sensing lead 2.1, a voltage booster 2.2, a top sensing lead 2.3 and a measuring instrument body 2.4; the sensing circuit 2.1, the voltage booster 2.2, the top sensing lead 2.3, the measuring instrument body 2.4, the conductive base plate 3 and the conductive cover plate 1.4 are connected in series to form a measuring loop.
Furthermore, the conductive base plate 3 and the conductive cover plate 1.4 are made of copper.
Furthermore, a threaded hole 7 is formed in the vertical baffle frame 6, and the baffle clamping seat 8 is fixed at the threaded hole 7 through a bolt. A plurality of baffle clamping seats 8 are arranged on the vertical baffle frame 6, and a transverse support rod 10 on each baffle clamping seat 8 is connected with an arc-shaped elastic baffle 9.
The vertical baffle frame 6 on along being provided with screw hole 7, be provided with three baffle cassette 8 through the screw, arc elastic baffle 9 is fixed in baffle cassette 8 through horizontal bracing piece 10. The transverse supporting rod 10 and the baffle clamping seat 8 can slide, and the number of the arc-shaped elastic baffles 9 of the supporting soil body can be selected according to the size of the soil body. The arc-shaped elastic baffle 9 can be detached, and the baffle with the corresponding size can be selected according to the size of the soil body to be measured.
Further, the heights of the arc-shaped elastic baffles 9 on each vertical baffle frame 6 are sequentially reduced from bottom to top; the arc-shaped elastic baffle 9 is made of rubber, the transverse supporting rod 10 is a square rod, a guide groove 13 is formed in the transverse supporting rod 10, a fastening bolt 14 is installed on the guide groove 13, a radial through hole is formed in a screw rod of the fastening bolt 14, a pull wire 15 penetrates through the radial through hole, and two ends of the pull wire 15 are connected with the outer wall of the arc-shaped elastic baffle 9 respectively.
The larger the number of the arc-shaped elastic baffles 9 on each vertical baffle frame 6 is, the larger the height adjusting range is. The height of a plurality of arc elastic baffle plates 9 on each vertical baffle plate frame 6 is reduced from bottom to top in sequence, more accurate adjustment can be carried out according to the height of a soil body sample, the number of the arc elastic baffle plates 9 is more, and the adjustment precision is higher.
As shown in fig. 7, the position of the fastening bolt 14 is moved to the left, and the radian of the arc-shaped elastic baffle 9 is reduced; the position of the fastening bolt 14 is moved rightwards, and the radian of the arc-shaped elastic baffle 9 is increased;
further, the baffle clamping seat 8 and the transverse supporting rod 10 are fixed through a locking device 16; the baffle clamping seat 8 is provided with a jack 17, the locking device 16 comprises a bolt 16.1, a spring 16.2 is sleeved on the bolt, the bolt 16.1 is positioned in the jack 17, and the bottom of the bolt 16.1 is contacted with the transverse supporting rod 10.
The locking device 16 is used to prevent the position of the lateral support bar 10 from slipping.
In a preferred embodiment, the measuring method of the experimental soil resistivity measuring device includes the following steps:
s1: compacting soil bodies compacted by cylinders with different radiuses and heights by using a soil compactor, and dividing the soil bodies into a plurality of groups of soil body samples;
s2: uniformly coating a proper amount of conductive adhesive on the conductive bottom sheet 3 and the conductive cover sheet 1.4;
s3: pulling the bolt 16.1 upwards, and sliding the transverse support rod 10 on the vertical baffle frame 6 to ensure that enough gaps are reserved beside the vertical baffle frame 6 for placing soil body samples;
s4: placing a soil body sample in the middle of the measuring base 1.2, enabling the bottom conductive adhesive to fully contact the soil body sample, selecting 9 arc-shaped elastic baffles according to the height of the soil body sample, and adjusting the radian of the arc-shaped elastic baffles 9 according to the diameter of the soil body sample;
in this step, when the radian of the arc elastic baffle 9 is adjusted, the steps are as follows: loosening the fastening bolts 14, moving the positions of the fastening bolts 14, pulling the arc-shaped elastic baffle plate 9 through the pull wires 15, enabling the arc-shaped elastic baffle plate 9 to deform, and screwing the fastening bolts 14 when the radian of the arc-shaped elastic baffle plate 9 reaches a proper position, so that the positions of the fastening bolts 14 are fixed, and further enabling the radian of the arc-shaped elastic baffle plate 9 to be fixed;
the number of the arc-shaped elastic baffles is 9 according to the height of the soil sample, and the principle is as follows: as shown in fig. 6, the number of the arc-shaped elastic baffles 9 on each vertical baffle frame 6 determines the number of the height-adjusting gears, and if the number of the arc-shaped elastic baffles 9 is three, the adjustment of three height gears can be performed.
S5: adjusting the horizontal position of the transverse support rod 10 to ensure that the arc-shaped elastic baffle 9 is fully attached to the side curved surface of the soil body sample, and loosening the bolt 16.1 to ensure that the position of the transverse support rod 10 is fixed;
s6: the driving device 1.3 is used for controlling the conductive cover plate 1.4 to fully compact the soil body, and the top conductive adhesive is fully contacted with the soil body sample;
s7: the resistivity measuring instrument 2 is used for automatically calculating the conductivity of the soil body sample and recording single group of data;
s8: and replacing soil body samples with different sizes, and repeating the steps S1-S7 to perform experiments to obtain multiple groups of data.
The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the scope of the present invention is defined by the claims, and equivalents including technical features described in the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.
Claims (10)
1. The utility model provides a soil body resistivity measuring device for experiments, is including measuring fixing device (1) and resistivity measuring apparatu (2), and resistivity measuring apparatu (2) are used for measuring soil body resistivity, its characterized in that: the measuring and fixing device (1) comprises a measuring base (1.1), a plurality of vertical baffle frames (6) are arranged on the measuring base (1.1), baffle clamping seats (8) are arranged on the vertical baffle frames (6), the baffle clamping seats (8) are connected with arc-shaped elastic baffles (9) through transverse supporting rods (10), and the arc-shaped elastic baffles (9) are annularly arranged; a support frame is arranged at the top of the vertical baffle frame (6), a driving device (1.3) is arranged on the support frame, and the driving device (1.3) is used for driving the conductive cover plate (1.4) to move up and down; the conductive cover plate (1.4) and the measuring base (1.1) are electrically connected with the resistivity measuring instrument (2) through a lead.
2. The experimental soil resistivity measurement device of claim 1, wherein: the measuring base (1.1) comprises a conductive film (3), an insulator base (4) and a cylindrical elastic buttress (5), the cylindrical elastic buttress (5) is arranged at the bottom of the insulator base (4), the insulator base (4) is of an annular structure, the conductive film (3) is arranged in the middle of the upper surface of the insulator base (4), and the conductive film (3) is electrically connected with the resistivity measuring instrument (2) through a lead.
3. The experimental soil resistivity measurement device of claim 1, wherein: the support frame comprises a fixed support (1.2) connected with a vertical baffle plate frame (6), the fixed support (1.2) is connected with a cross supporting structure (11), and a driving device (1.3) is arranged on the cross supporting structure (11).
4. The experimental soil resistivity measurement device of claim 1, wherein: the driving device (1.3) is used for driving the insulating lifting rod (12) to move up and down, and the insulating lifting rod (12) is connected with the conductive cover plate (1.4).
5. The experimental soil resistivity measurement device of claim 2, wherein: the resistivity measuring instrument (2) comprises a bottom sensing lead (2.1), a voltage booster (2.2), a top sensing lead (2.3) and a measuring instrument body (2.4); the measuring instrument comprises a sensing circuit (2.1), a voltage booster (2.2), a top sensing lead (2.3), a measuring instrument body (2.4), a conductive base plate (3) and a conductive cover plate (1.4) which are connected in series to form a measuring loop.
6. The experimental soil resistivity measurement device of claim 1, wherein: the vertical baffle plate frame (6) is provided with a threaded hole (7), and the baffle plate clamping seat (8) is fixed at the threaded hole (7) through a bolt.
7. The experimental soil resistivity measurement device of claim 6, wherein: a plurality of baffle clamping seats (8) are arranged on the vertical baffle frame (6), and a transverse support rod (10) on each baffle clamping seat (8) is connected with an arc-shaped elastic baffle (9).
8. The experimental soil resistivity measurement device of claim 7, wherein: the heights of the arc-shaped elastic baffles (9) on each vertical baffle frame (6) are sequentially reduced from bottom to top; arc elastic baffle (9) are the rubber material, and horizontal bracing piece (10) are square pole, are equipped with guide slot (13) on horizontal bracing piece (10), install fastening bolt (14) on guide slot (13), are equipped with radial through hole on fastening bolt's (14) the screw rod, and radial through hole alternates has act as go-between (15), act as go-between (15) both ends respectively with arc elastic baffle (9) outer wall connection.
9. The experimental soil resistivity measurement device of claim 1, wherein: the baffle clamping seat (8) and the transverse supporting rod (10) are fixed through a locking device (16); be equipped with jack (17) on baffle cassette (8), locking device (16) have cup jointed spring (16.2) including bolt (16.1), bolt (16.1) are located jack (17), and bolt (16.1) bottom and horizontal bracing piece (10) contact.
10. A method of measuring an experimental earth resistivity survey apparatus according to any one of claims 1 to 9 characterised by the steps of:
s1: compacting soil bodies compacted by cylinders with different radiuses and heights by using a soil compactor, and dividing the soil bodies into a plurality of groups of soil body samples;
s2: uniformly coating a proper amount of conductive adhesive on the conductive bottom sheet (3) and the conductive cover sheet (1.4);
s3: the bolt (16.1) is pulled upwards, and the transverse support rod (10) on the vertical baffle frame (6) is slid, so that enough gaps are reserved beside the vertical baffle frame (6) for placing soil body samples;
s4: placing a soil body sample in the middle of a measuring base (1.2), enabling bottom conductive adhesive to fully contact the soil body sample, selecting the number of the arc-shaped elastic baffles (9) according to the height of the soil body sample, and adjusting the radian of the arc-shaped elastic baffles (9) according to the diameter of the soil body sample;
in the step, when the radian of the arc-shaped elastic baffle (9) is adjusted, the method comprises the following steps: loosening the fastening bolts (14), moving the positions of the fastening bolts (14), pulling the arc-shaped elastic baffle (9) through the pull wires (15) and enabling the arc-shaped elastic baffle (9) to deform, and screwing the fastening bolts (14) when the radian of the arc-shaped elastic baffle (9) reaches a proper position to fix the positions of the fastening bolts (14), so that the radian of the arc-shaped elastic baffle (9) is fixed;
s5: adjusting the horizontal position of the transverse supporting rod (10) to ensure that the arc-shaped elastic baffle (9) is fully attached to the side curved surface of the soil body sample, and loosening the bolt (16.1) to ensure that the position of the transverse supporting rod (10) is fixed;
s6: the driving device (1.3) is used for controlling the conductive cover plate (1.4) to fully compact the soil body, and the top conductive adhesive is fully contacted with the soil body sample;
s7: the conductivity of the soil body sample is automatically calculated by using the resistivity measuring instrument (2), and single group of data is recorded;
s8: and replacing soil body samples with different sizes, and repeating the steps S1-S7 to perform experiments to obtain multiple groups of data.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110745469.8A CN113504269A (en) | 2021-07-01 | 2021-07-01 | Experimental soil resistivity measuring device and measuring method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110745469.8A CN113504269A (en) | 2021-07-01 | 2021-07-01 | Experimental soil resistivity measuring device and measuring method thereof |
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