CN210720114U - Device for measuring disturbance range of soil body after sampling - Google Patents
Device for measuring disturbance range of soil body after sampling Download PDFInfo
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- CN210720114U CN210720114U CN201921761192.2U CN201921761192U CN210720114U CN 210720114 U CN210720114 U CN 210720114U CN 201921761192 U CN201921761192 U CN 201921761192U CN 210720114 U CN210720114 U CN 210720114U
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Abstract
The utility model belongs to the technical field of soil body property is measured, concretely relates to measure device of soil body disturbance scope after the sampling. The problem of disturbance can influence the measuring result and go wrong among the prior art is solved, the technical scheme of the utility model is that: including latticed probe system and sharp actuating mechanism, latticed probe system includes the waffle slab, the waffle slab is connected with sharp actuating mechanism, the vertical setting of sharp actuating mechanism, the waffle slab includes first waffle slab and second waffle slab, first waffle slab and second waffle slab are connected with the single probe system that is used for surveying the penetration resistance of the same quantity respectively, be provided with test sample case and comparison sample case respectively under first waffle slab and the second waffle slab. The utility model discloses a contrast test group and contrast group's probe injection resistance data can make things convenient for audio-visual definite disturbance scope, are applicable to the disturbance scope of the measurement soil body after the sampling.
Description
Technical Field
The utility model belongs to the technical field of soil body property is measured, concretely relates to measure device of soil body disturbance scope after the sampling.
Background
The soil itself has several physical and mechanical characteristics, such as density, porosity, shear strength, etc., which are usually kept constant by default. However, tests have proved that after the soil is shoveled, dug and penetrated by related equipment, the original structure of the soil is damaged, the soil is disturbed within a certain distance from the operation range, and the disturbance causes the change of the mechanical property of the soil.
In the prior art, most of measuring devices focus on measuring single physical quantities such as displacement, penetration resistance and the like, and do not provide concepts of disturbance and disturbance range. On the premise of not considering disturbance, when the measured soil body is correspondingly measured, the disturbance has certain influence on the measurement, and the influence directly causes errors of the measurement result. If the range of the disturbance is determined, the measurement results can be corrected, and therefore, it is important to determine the range of the disturbance.
SUMMERY OF THE UTILITY MODEL
The existence to disturbance among the prior art can influence the problem that measuring result error appears, the utility model provides a measure device of soil body disturbance scope after the sampling, its aim at: and determining a disturbance range, correcting the measurement result under the condition of considering disturbance, and reducing the error of the measurement result.
The utility model adopts the technical scheme as follows:
a device for measuring the disturbance range of a soil body after sampling comprises a gridding probe system and a linear driving mechanism, the gridding probe system comprises a gridding plate, the gridding plate is connected with a linear driving mechanism, the linear driving mechanism is vertically arranged, the grid plate comprises a first grid plate and a second grid plate, the first grid plate and the second grid plate are respectively connected with the same number of single probe systems for detecting the penetration resistance, a test sample box and a comparison sample box are respectively arranged under the first grid plate and the second grid plate, each single probe system comprises a grid connecting piece, the grid connecting piece is connected with the grid plate, a pressure sensor is connected below the grid connecting piece, a probe fixing piece is connected below the pressure sensor, the probe fixing piece is connected with a probe, and the single probe system is detachably connected with the grid plate.
After the technical scheme is adopted, the linear driving mechanism drives the gridding probe system to move downwards, the single probe system penetrates into the test sample box and the comparison sample box, the penetration resistance data of each probe is recorded, through comparing the penetration resistance data of the corresponding positions and the same depth in the test sample box and the comparison sample box, the areas with different penetration resistances are regarded as disturbance ranges, and the variation of the penetration resistance can also be used as one of judgment bases of disturbance degrees. The influence of disturbance is considered, and the measurement result within the disturbance range can be corrected, so that the error of the measurement result is smaller. The penetration resistance experienced by the probe is recorded by pressure sensors, each recording the penetration resistance at a location, and the perturbed region can be measured by comparison. The maintenance, the clearance and the change of the single probe system of being convenient for, when adopting the test sample case of different shapes and contrast sample case, be convenient for demolish the single probe system that need not use, the suitability is stronger.
The first grid plate and the second grid plate are the same in shape and size, and are symmetrically arranged relative to the connection point of the grid plate and the linear driving mechanism.
After the technical scheme is adopted, the stress of the first grid plate is completely the same as that of the second grid plate, and the measurement error caused by different stresses is avoided.
Preferably, the test sample chamber and the control sample chamber are identical in shape and structure.
After the technical scheme is adopted, the conditions of the test group and the control group are the same, and the measured disturbance range result is more accurate.
Preferably, the diameter of the probe is less than or equal to 2 mm.
After the technical scheme is adopted, the probe can be prevented from causing secondary disturbance in the process of penetrating into the soil body to be measured, and the measurement result is more accurate.
Preferably, the distance between adjacent probes is 40mm to 100 mm.
If the arrangement of the probes is too sparse, the measurement result is too rough, if the arrangement density of the probes is too high, secondary disturbance can be caused to the measured soil body, the accuracy of the measurement disturbance range is influenced, after the technical scheme is adopted, the secondary disturbance of the measured soil body can not be caused on the premise of ensuring the precision of the measurement result, and the measurement accuracy is ensured.
Preferably, the measuring range of the pressure sensor is not more than 100N, and the measuring precision is not lower than 1.3 +/-0.7 mv/V.
If the precision of the pressure sensor is too low, the measured penetration resistance difference is not large, and an accurate result cannot be obtained.
The device is adopted to measure the disturbance range of the soil body after sampling, and the measuring method comprises the following steps:
[1] the test sample box 5 and the comparison sample box 6 are filled with the same soil sample to be tested;
[2] performing disturbance actions in the test sample box 5, wherein the disturbance actions comprise digging, shoveling, penetrating and the like;
[3] controlling the gridding probe system to move downwards, so that the probes 10 penetrate into the soil sample to be detected, and simultaneously recording the penetration resistance data of each probe 10;
[4] comparing the penetration resistance data of the probes 10 at the same position and depth in the test sample box 5 and the control sample box 6, the regions with different penetration resistances are regarded as the disturbance ranges.
Through comparing the penetration resistance of the probe in the test sample box and the penetration resistance of the probe in the comparison sample box, the penetration resistance is different, namely the penetration resistance is in the disturbance range. Through the determination of the disturbance range, the measurement result within the disturbance range can be corrected, so that the measurement result is more accurate.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
1. through comparing the penetration resistance data of the probes at the corresponding positions and the same depth in the test sample box and the comparison sample box, the regions with different penetration resistances can be regarded as disturbance ranges, and the variation of the penetration resistance can also be used as one of the judgment bases of the disturbance degree. The influence of disturbance is considered, and the measurement result within the disturbance range can be corrected, so that the error of the measurement result is smaller. The penetration resistance experienced by the probe is recorded by pressure sensors, each recording the penetration resistance at a location, and the perturbed region can be measured by comparison. The single probe system is detachably connected with the grid plate, so that the single probe system is convenient to maintain, clean and replace, when the test sample boxes and the comparison sample boxes in different shapes are adopted, the single probe system which is not required to be used is convenient to disassemble, and the applicability is stronger.
2. The first grid plate and the second grid plate are completely same in stress, so that measurement errors caused by different stresses are avoided.
3. The test sample box and the comparison sample box are completely identical in shape and structure, the conditions of the test group and the comparison group are identical, and the measured disturbance range result is more accurate.
4. The diameter of the probe is less than or equal to 2mm, so that secondary disturbance caused by the probe in the process of penetrating into the soil body to be measured is avoided, and the measurement result is more accurate.
5. The distance between the adjacent probes is 40-100 mm, so that the secondary disturbance of the measured soil body can not be caused on the premise of ensuring the precision of the measurement result, and the measurement accuracy is ensured.
6. The measurement range of the pressure sensor is not more than 100N, the measurement precision is not less than 1.3 +/-0.7 mv/V, the measurement precision is ensured, and the determined disturbance range is more accurate.
7. Through comparing the penetration resistance of the probe in the test sample box and the penetration resistance of the probe in the comparison sample box, the penetration resistance is different, namely the penetration resistance is in the disturbance range. Through the determination of the disturbance range, the measurement result within the disturbance range can be corrected, so that the measurement result is more accurate.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of the present invention in an experiment;
fig. 3 is a schematic diagram of a single probe system configuration.
The system comprises a linear driving mechanism 1, a first grid plate 2, a second grid plate 3, a single probe system 4, a test sample box 5, a control sample box 6, a grid connecting piece 7, a pressure sensor 8, a probe connecting piece 9 and a probe 10.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
The present invention will be described in detail with reference to fig. 1 to 3.
A device for measuring the disturbance range of a soil body after sampling comprises a gridding probe system and a linear driving mechanism 1, wherein the linear driving mechanism is a linear motor in the embodiment. Gridding probe system includes the waffle slab, the waffle slab passes through bolted connection with sharp actuating mechanism 1, the vertical setting of sharp actuating mechanism 1, the waffle slab includes first waffle slab 2 and second waffle slab 3, first waffle slab 2 and second waffle slab 3 all are provided with 9 x 5's net, are provided with the single probe system 4 that is used for surveying the penetration resistance in every net, be provided with test sample case 5 and comparison sample case 6 respectively under first waffle slab 2 and second waffle slab 3, the same soil body that awaits measuring is adorned greatly in test sample case 5 and the comparison sample case 6.
Every single probe system 4 includes a grid connecting piece 7, grid connecting piece 7 and grid plate threaded connection, bolted connection has pressure sensor 8 below grid connecting piece 7, and bolted connection has probe mounting 9 below pressure sensor 8, probe mounting 9 threaded connection has probe 10.
The first grid plate 2 and the second grid plate 3 are the same in shape and size, and the first grid plate 2 and the second grid plate 3 are symmetrically arranged about the connection point of the grid plates and the linear motor.
In this embodiment, grid connecting piece 7 on the single probe system is cylindrical and is provided with the external screw thread, and the corresponding position on the net board is provided with the internal screw thread with grid connecting piece 7 complex, realizes dismantling the connection.
The test sample chamber 5 and the control sample chamber 6 are identical in shape and structure.
In this embodiment, the diameter of the probe 10 is 2 mm.
In this embodiment, the pitch between adjacent probes 10 is 50 mm.
In the embodiment, the measurement range of the pressure sensor 8 is 100N, and the measurement precision is 1.3 +/-0.7 mv/V.
The device is adopted to measure the disturbance range of the soil body after sampling, and the measuring method comprises the following steps:
[1] the test sample box 5 and the comparison sample box 6 are filled with the same soil sample to be tested;
[2] performing disturbance actions in the test sample box 5, wherein the disturbance actions comprise digging, shoveling, penetrating and the like;
[3] controlling the gridding probe system to move downwards, so that the probes 10 penetrate into the soil sample to be detected, and simultaneously recording the penetration resistance data of each probe 10;
[4] comparing the penetration resistance data of the probes 10 at the same position and depth in the test sample box 5 and the control sample box 6, the regions with different penetration resistances are regarded as the disturbance ranges.
The utility model discloses a contrast the penetration resistance of probe in test sample case and the contrast sample case, the penetration resistance difference explains this department promptly and lies in the disturbance within range, and this kind of method is simple effective, and the change size of penetration resistance also can regard as one of the judgement foundation of disturbance degree in addition. The test group is completely the same as the control group, thereby avoiding the influence of external factors on the test result. The accuracy of the test results is ensured by optimizing the spacing and diameter of the probes 10 and the pressure sensor 8. The disturbance range is determined, and after the disturbance factors are taken into consideration, other measurement results within the disturbance range can be corrected, so that the measurement results are more accurate.
The above-mentioned embodiments only express the specific embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for those skilled in the art, without departing from the technical idea of the present application, several changes and modifications can be made, which are all within the protection scope of the present application.
Claims (6)
1. The utility model provides a measure soil body disturbance scope after sampling which characterized in that: comprises a gridding probe system and a linear driving mechanism (1), wherein the gridding probe system comprises a gridding plate, the gridding plate is connected with the linear driving mechanism (1), the linear driving mechanism (1) is vertically arranged, the gridding plate comprises a first gridding plate (2) and a second gridding plate (3), the first gridding plate (2) and the second gridding plate (3) are respectively connected with single probe systems (4) which are used for detecting the injection resistance and have the same quantity, a test sample box (5) and a comparison sample box (6) are respectively arranged under the first gridding plate (2) and the second gridding plate (3), each single probe system (4) comprises a gridding connecting piece (7), the gridding connecting pieces (7) are connected with the gridding plate, a pressure sensor (8) is connected under the gridding connecting pieces (7), and a probe (9) is connected under the pressure sensor (8), the probe fixing piece (9) is connected with a probe (10), and the single probe system (4) is detachably connected with the grid plate.
2. The apparatus of claim 1, wherein the probe has a diameter of 2mm or less.
3. An apparatus for measuring the disturbance range of a soil mass after sampling as claimed in claim 1 wherein the spacing between adjacent probes is in the range 40mm to 100 mm.
4. The apparatus of claim 1, wherein the pressure sensor has a measurement range of no more than 100N and a measurement accuracy of no less than 1.3 ± 0.7 mv/V.
5. A device for measuring the disturbance range of a soil mass after sampling as claimed in claim 1 wherein the first grid plate (2) and the second grid plate (3) are of the same shape and size and the first grid plate (2) and the second grid plate (3) are symmetrically arranged about the connection point of the grid plates with the linear drive mechanism (1).
6. An apparatus for measuring the disturbance zone of a body after sampling according to claim 1, wherein the test sample chamber (5) and the reference sample chamber (6) are identical in shape and configuration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921761192.2U CN210720114U (en) | 2019-10-21 | 2019-10-21 | Device for measuring disturbance range of soil body after sampling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921761192.2U CN210720114U (en) | 2019-10-21 | 2019-10-21 | Device for measuring disturbance range of soil body after sampling |
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| Publication Number | Publication Date |
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| CN210720114U true CN210720114U (en) | 2020-06-09 |
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| CN201921761192.2U Active CN210720114U (en) | 2019-10-21 | 2019-10-21 | Device for measuring disturbance range of soil body after sampling |
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- 2019-10-21 CN CN201921761192.2U patent/CN210720114U/en active Active
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