CN206479268U - For loess and the forced three-dimensional soil pressure sensor of weak soil - Google Patents
For loess and the forced three-dimensional soil pressure sensor of weak soil Download PDFInfo
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- CN206479268U CN206479268U CN201621476312.0U CN201621476312U CN206479268U CN 206479268 U CN206479268 U CN 206479268U CN 201621476312 U CN201621476312 U CN 201621476312U CN 206479268 U CN206479268 U CN 206479268U
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- probing shell
- loess
- soil pressure
- soil
- pressure sensor
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Abstract
It is used for the forced three-dimensional soil pressure sensor of loess and weak soil, including probing shell the utility model discloses a kind of, probing shell includes probing shell top and probing shell pressing part；The top of the side wall of probing shell pressing part is the face of cylinder, the bottom of side wall is surrounded by the plane of three 60 ° of angles each other, circular neck is provided with the medium position of each plane, circular neck is interior to be covered and be fixed with rigid disk, and the center of rigid disk is fixed with resistance strain gage attached to it；Resistance strain gage is connected by signal lead with the strain acquirement module inside probing shell, and is connected by lead with host computer signal；The electrical compass module being connected by sensor lead with host computer signal is also horizontally fixed with inside probing shell.The utility model can realize loess, the measurement of stratum three-phase soil pressure below weak soil and level of ground water, and compared to conventional soil pressure measurement scheme, simple installation, cost-effective and construction period, measurement accuracy is high.
Description
Technical field
The utility model is related to soil pressure detection field, more particularly to a kind of forced three-dimensional soil for loess and weak soil
Pressure sensor.
Background technology
Soil pressure measurement is an important content in soil mechanics theory and Geotechnical Engineering experimental study in rock soil medium, greatly
Theoretical and problem in practice the solution of Geotechnical Engineering is measured, site-models or the direct measurement result of model test, mesh is often relied on
The basic skills of preceding soil measurement is to use to be embedded in soil or be embedded in works surface in soil by soil pressure sensor, and then to soil
Pressure carries out direct measurement.It is more easy to reach due to comparing other metering system conditions, soil pressure sensor is still countries in the world
Carry out the basic tool of soil-structure interactions experimental study.
During practice, the soil pressure sensor of traditional disc structure, when measuring loess and weak soil pressure,
There is problems with：
(1) more by the way of prospect pit installation, long construction period, difficulty is big, and cost is high, especially in Soft rock body or
When installing under water, constructional difficulties, hole risk of collapsing is larger；
(2) installation process needs larger working face, causes sensor perimeter Rock And Soil to disturb, changes original stress
So that the actual pressure that sensor is measured has error with true pressure；
(3) sensors are only capable of determining the soil pressure in a direction；Sensor is placed in deep, and sensor can not be detectd in itself
Change in location is surveyed, in the monitoring such as landslide, sensing station or angle change have a strong impact on Measurement results；
Utility model content
The purpose of this utility model is to overcome above-mentioned problems of the prior art to be used for loess and weak soil there is provided one kind
Forced three-dimensional soil pressure sensor, simplify the measurement of the soil pressure of loess and weak soil, improve measurement accuracy.
The technical solution of the utility model is：For loess and the forced three-dimensional soil pressure sensor of weak soil, including visit
Head shell, the probing shell include be used for connect sounding rod probing shell buckle part and with the probing shell clamping part
Divide the probing shell top positioned at probing shell buckle beneath portions of connection；The bottom of the side wall on the probing shell top by
The plane of three 60 ° of angles each other is surrounded, and three three intersecting lenses each other between the plane of 60 ° of angles it is different when it is parallel；
It is provided with the medium position of each plane and rigid disk, the rigid disk is covered and be fixed with circular neck, the circular neck
Center be fixed with resistance strain gage attached to it；The resistance strain gage is by signal lead with being located in probing shell
The on-site bus type acquisition module signal connection in portion, the on-site bus type acquisition module is believed by sensor lead and host computer
Number connection；Electronic compass is also horizontally fixed with inside the probing shell, electronic compass passes through electronic compass lead and host computer
Signal is connected.
It is preferred that a diameter of 30mm of the circular neck；The rigid disk is steel disc, and a diameter of 29mm of steel disc is thick
Spend for 1mm；The steel disc is fixed in the circular neck.
It is preferred that the side wall on the probing shell top is the face of cylinder, the body diameter on the face of cylinder is 48mm.
It is preferred that being provided with the middle part of the probing shell top for drawing sensor lead and electronic compass lead
Through hole.
It is preferred that the signal of the sensor lead of the signal output of the on-site bus type acquisition module, electronic compass is defeated
After the output signal of the electronic compass lead gone out is changed by A/D, the incoming host computer of data is directly subjected to data analysis and place
Reason.
It is preferred that the connected mode between the probing shell top and probing shell clamping part point is to snap connection；Visit
Head shell buckle part is threadedly coupled with sounding rod.
It is preferred that the model DAQM-4202 that the on-site bus type acquisition module is produced using Zhou Zheng scientific ＆ technical corporation
Acquisition module.
The beneficial effects of the utility model：There is provided a kind of press-in for loess and weak soil in the utility model embodiment
Formula three-dimensional soil pressure sensor, compared with prior art, the utility model has following technological merit：
1st, the utility model is used from forced structure, in loess and soft clay area test soil pressure, it is not necessary to carry out
Backfill, installs rapid, cost-effective.
2nd, sensing station can be achieved by the way of three-phase pressure sensor and electronic compass are combined in the utility model
It is accurately positioned and pressure is more accurately measured.
3rd, the utility model is applied to the soil pressure of the test following soil layer of level of ground water, solves pore-forming difficult and with high costs
The problem of.
4th, foil gauge and electronic compass measurement data are gathered by on-site bus type acquisition module, directly amplifies transmission and reduce
Signal attenuation so that signal is interference-free, improves measurement accuracy.
The small volume of the utility model sensor, energy consumption is low, simple in construction, and cost is substantially reduced compared with prior art.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the utility model sensor；
Fig. 2 is the inside connection diagram of the utility model sensor；
Fig. 3 is the fundamental diagram that loading procedure is carried out using sensor of the present utility model.
Description of reference numerals：
1st, sensor lead；2nd, through hole；3rd, probing shell buckle part；4th, probing shell top；5th, on-site bus type is adopted
Collect module；6th, electronic compass；7th, rigid disk；8th, resistance strain gage；9th, feeler inspection frame；10th, sounding rod.
Embodiment
Below in conjunction with the accompanying drawings, an embodiment of the present utility model is described in detail, it is to be understood that this
The protection domain of utility model is not limited by embodiment.
The utility model embodiment is used for the forced three-dimensional soil pressure sensor of loess and weak soil there is provided a kind of, its soil
Pressure sensor include probing shell, the probing shell include be used for connect the probing shell buckle part 3 of sounding rod 10 with
And the probing shell top 4 for being located at the lower section of probing shell buckle part 3 being connected with the probing shell buckle part 3；It is described to visit
The bottom of the side wall of head shell upper 4 is surrounded by the plane of three 60 ° of angles each other, and three each other 60 ° of angles plane it
Between three intersecting lenses it is different when it is parallel；I.e. probing shell pressing part is cylinder by three planes of three 60 ° of angles each other
The triangular pyramid intercepted, is convenient for push operation；Circular neck, the circle are provided with the medium position of each plane
Covered in neck and be fixed with rigid disk 7, the center of the rigid disk 7 is fixed with resistance strain gage 8 attached to it；It is described
Resistance strain gage 8 is connected by signal lead with the signal of on-site bus type acquisition module 5 inside probing shell, described existing
Field bus formula acquisition module 5 is connected by sensor lead 1 with host computer signal；The lead of the resistance strain gage 8 directly connects
Connect on-site bus type acquisition module 5, on-site bus type acquisition module 5 draw four wire power supplys just, power supply is negative, A, B.It is live total
Acquisition module (the tunnel of RS485 buses 8 for the model DAQM-4202 that wire type acquisition module is specifically produced using Zhou Zheng scientific ＆ technical corporation
Modulus isolates analog input)；Electronic compass 6 is also horizontally fixed with inside the probing shell, electronic compass 6 passes through electronics
Compass lead is connected with host computer signal, is easy to position the test position of three-dimensional soil pressure sensor and is improved measurement accuracy.
As shown in Figure 1 and Figure 2, three resistance strain gages 8 are separately fixed at three centers of rigid disk 7, three 7 pairs of rigid disks
Three upward (on i.e. three inclined-planes) of probing shell pressing part should be fixed on, the lead of resistance strain gage 8 leads to scene always
Wire type acquisition module 5, four leads of on-site bus type acquisition module 5 draw probe again；The level of electronic compass 6 is fixed on probe
Inside shell pressing part, on-site bus type acquisition module 5 is also connected；The positive and negative power lead that electronic compass 6 is drawn passes through
12V-5V voltage reduction modules are connected with the positive and negative wire of the power supply of on-site bus type acquisition module 5, connect 12V power supplys；Final output four
Sensor lead 1 is connected from through hole 2, can be connected to PC ends.
Further, a diameter of 30mm of the circular neck；The rigid disk 7 be steel disc, a diameter of 29mm of steel disc,
Thickness is 1mm；The steel disc is fixed in the circular neck.
Further, the side wall on the probing shell top 4 is the face of cylinder, and the body diameter on the face of cylinder is 48mm.Visit
Head pressing part (diameter 50mm) is more bigger than top, and being popped one's head in during press-in, overall directly contact soil layer area is small, and frictional force is small, is easy to
Push operation.During press-in, upper strata pan soil can be handled by way of burrowing, and loess and weak soil part can be by three-dimensional soil pressure sensings
Lead is passed through press-in pipeline by device assembling after finishing, by way of external world's pressurization, the data for coordinating electronic compass 6 to obtain, by
Three-dimensional soil pressure sensor is pressed into precalculated position, is measured.
Further, the middle part on the probing shell top 4 is provided with for drawing sensor lead 1 and electronic compass draws
The through hole 2 of line.
Further, sensor lead 1, the electronic compass of the signal output of the on-site bus type acquisition module 5
It is directly that data are incoming upper after the output signal of the electronic compass lead of 6 signal output is changed by A/D
Machine carries out data analysis and process.Data analysis component, the electronic compass 6 can measure the location of probe
γ is designated as with the angle of the axles of Y tri-, three obtained data is measured and is designated as F1, F2, F3, then, measure the soil pressure of X-directionThe soil pressure of Y directionZ
The soil pressure of direction of principal axis
Further, the connected mode between the probing shell top 4 and probing shell buckle part 3 is that buckle connects
Connect；Probing shell buckle part 3 is threadedly coupled with sounding rod 10.
For the measuring method of loess and the forced three-dimensional soil pressure sensor of weak soil, comprise the following steps：
The first step, first smooth location is laid flat press-in main frame, to make probing shell vertically perpendicular to the ground, and lower good
Earth anchor, so as to fixed press-in main frame；
Second step, the steel pipe that many can be sequentially connected is as sounding rod 10, by service cable line, sensor lead 1
And electronic compass lead penetrates sounding rod 10, and sounding rod 10 is connected with soil pressure sensor, connects circuit, adjust instrument
Device；
3rd step, ground end is squeezed into the presence of press using soil pressure sensor and as the steel pipe of sounding rod 10,
The probe of soil pressure sensor should be kept at the uniform velocity vertically to be pressed into soil in the process；Wherein sounding rod 10 is entered by feeler inspection frame 9
Row support.
4th step, connects host computer by the sensor lead 1 and electronic compass lead, is sentenced according to the signal fed back to
Disconnected pushed position and angle, are adjusted to reaching after expection, stop press effect, and take out steel pipe and probing shell clamping part
Divide 3.
Fig. 3 is the fundamental diagram that loading procedure is carried out using sensor of the present utility model.
In summary, a kind of forced three-dimensional soil pressure for loess and weak soil that the utility model embodiment is provided is passed
Sensor, the soil pressure sensor include probing shell, steel disc, resistance strain gage, electronic compass, on-site bus type acquisition module and
Sensor lead, wherein, probing shell pressing part for diameter 50mm cylinder by three each other 60 ° of three planes intercept,
Three planes are provided with diameter 30mm circular neck in centre, and resistance-strain is posted at diameter 29mm thickness 1mm steel disc center
Piece is simultaneously fixed on circular neck center；Resistance strain gage lead is directly connected to on-site bus type acquisition module and drawn by sensor
Data can be directly transferred to host computer by line；Electronic compass level is fixed on probe inside, and data are transmitted by sensor lead；Just
In positioning three-dimensional soil pressure sensor test position and improve measurement accuracy.The many sensor leads drawn from probe can lead to
Cross voltage reduction module and converter is converted, data directly can be conducted into PC and other equipment by final output 4, extraction
Row data analysis and process, it is easy to operate.Probing shell pressing part diameter 50mm, other parts diameter 48mm, probing shell
Pressing part is bigger, and popped one's head in during press-in top and press-in device directly contact that soil layer area is small, and frictional force is small, is easy to press-in to grasp
Make.Soil pressure sensor of the present utility model is forced soil pressure sensor, it is adaptable to a variety of soil pressure measurements, especially not
The soil pressure measurement of suitable the burrow loess and weak soil that are put into sensor, it, which is popped one's head in, is directly inserted into progress pressure survey in soil
Amount, it is more succinctly, simple to operate and cheap compared to other current weak soil pressure measxurement modes.Soil of the present utility model
The soil pressure in measurable three directions of pressure sensor, and by position sensor and orientation measurement module by calculating this
The soil pressure of position, it is to avoid caused because the soil pressure sensor that other mounting means are caused tilts or do not reach precalculated position
Soil pressure measurement error, compared to single-phase sensor, precision is higher.
Compared with prior art, the utility model has following technological merit：
1st, the utility model is used from forced structure, in loess and soft clay area test soil pressure, it is not necessary to carry out
Backfill, installs rapid, cost-effective.
2nd, sensing station can be achieved by the way of three-phase pressure sensor and electronic compass are combined in the utility model
It is accurately positioned and pressure is more accurately measured.
3rd, the utility model is applied to the soil pressure of the test following soil layer of level of ground water, solves pore-forming difficult and with high costs
The problem of.
4th, foil gauge and electronic compass measurement data are gathered by on-site bus type acquisition module, directly amplifies transmission and reduce
Signal attenuation so that signal is interference-free, improves measurement accuracy.
The small volume of the utility model sensor, energy consumption is low, simple in construction, and cost is substantially reduced compared with prior art.
Disclosed above is only several specific embodiments of the present utility model, still, the utility model embodiment not office
It is limited to this, the changes that any person skilled in the art can think of should all fall into protection domain of the present utility model.
Claims (7)
1. for loess and the forced three-dimensional soil pressure sensor of weak soil, including probing shell, it is characterised in that the probe
Shell includes the probing shell buckle part (3) for connecting sounding rod (10) and connected with the probing shell buckle part (3)
The probing shell top (4) being located at below probing shell buckle part (3) connect；The side wall of the probing shell top (4)
Bottom is surrounded by the plane of three 60 ° of angles each other, and three three intersecting lenses each other between the plane of 60 ° of angles it is different when
It is parallel；It is provided with the medium position of each plane and rigid disk (7), institute is covered and be fixed with circular neck, the circular neck
The center for stating rigid disk (7) is fixed with resistance strain gage (8) attached to it；The resistance strain gage (8) is drawn by signal
Line is connected with on-site bus type acquisition module (5) signal inside probing shell, the on-site bus type acquisition module (5)
It is connected by sensor lead (1) with host computer signal；Electronic compass (6) is also horizontally fixed with inside the probing shell, electricity
Sub- compass (6) is connected by electronic compass lead with host computer signal.
2. as claimed in claim 1 for loess and the forced three-dimensional soil pressure sensor of weak soil, it is characterised in that described
A diameter of 30mm of circular neck；The rigid disk (7) be steel disc, a diameter of 29mm of steel disc, thickness is 1mm；The steel disc
It is fixed in the circular neck.
3. as claimed in claim 1 for loess and the forced three-dimensional soil pressure sensor of weak soil, it is characterised in that described
The side wall on probing shell top (4) is the face of cylinder, and the body diameter on the face of cylinder is 48mm.
4. as claimed in claim 1 for loess and the forced three-dimensional soil pressure sensor of weak soil, it is characterised in that described
The through hole (2) for drawing sensor lead (1) and electronic compass lead is provided with the middle part of probing shell top (4).
5. as claimed in claim 1 for loess and the forced three-dimensional soil pressure sensor of weak soil, it is characterised in that described
Sensor lead (1), electronics sieve of the signal output of electronic compass (6) of the signal output of on-site bus type acquisition module (5)
After the output signal of disk lead is changed by A/D, the incoming host computer of data is directly subjected to data analysis and process.
6. as claimed in claim 1 for loess and the forced three-dimensional soil pressure sensor of weak soil, it is characterised in that described
Connected mode between probing shell top (4) and probing shell buckle part (3) is to snap connection；Probing shell buckle part
(3) it is threadedly coupled with sounding rod (10).
7. as claimed in claim 1 for loess and the forced three-dimensional soil pressure sensor of weak soil, it is characterised in that described
The acquisition module for the model DAQM-4202 that on-site bus type acquisition module (5) is produced using Zhou Zheng scientific ＆ technical corporation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621476312.0U CN206479268U (en) | 2016-12-30 | 2016-12-30 | For loess and the forced three-dimensional soil pressure sensor of weak soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621476312.0U CN206479268U (en) | 2016-12-30 | 2016-12-30 | For loess and the forced three-dimensional soil pressure sensor of weak soil |
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| Publication Number | Publication Date |
|---|---|
| CN206479268U true CN206479268U (en) | 2017-09-08 |
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|---|---|---|---|
| CN201621476312.0U Expired - Fee Related CN206479268U (en) | 2016-12-30 | 2016-12-30 | For loess and the forced three-dimensional soil pressure sensor of weak soil |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768521A (en) * | 2016-12-30 | 2017-05-31 | 西北大学 | For loess and the forced three-dimensional soil pressure sensor and its measuring method of weak soil |
| CN108677909A (en) * | 2018-05-31 | 2018-10-19 | 上海二十冶建设有限公司 | The device and its application method of quick discrimination underground karst cavity in soft layer |
| CN111691867A (en) * | 2020-07-17 | 2020-09-22 | 西北大学 | Device for measuring pressure and torsion in drilling process of drilling machine and using method thereof |
| CN112240813A (en) * | 2020-10-14 | 2021-01-19 | 中国平煤神马能源化工集团有限责任公司 | Vibrating string type three-dimensional stress sensor for deep hole ground stress measurement |
| CN112593915A (en) * | 2020-12-28 | 2021-04-02 | 西北大学 | Device for measuring drilling machine in drilling process in real time and installation method thereof |
-
2016
- 2016-12-30 CN CN201621476312.0U patent/CN206479268U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768521A (en) * | 2016-12-30 | 2017-05-31 | 西北大学 | For loess and the forced three-dimensional soil pressure sensor and its measuring method of weak soil |
| CN106768521B (en) * | 2016-12-30 | 2023-05-09 | 西北大学 | Press-in three-way soil pressure sensor for loess and soft soil and measuring method thereof |
| CN108677909A (en) * | 2018-05-31 | 2018-10-19 | 上海二十冶建设有限公司 | The device and its application method of quick discrimination underground karst cavity in soft layer |
| CN111691867A (en) * | 2020-07-17 | 2020-09-22 | 西北大学 | Device for measuring pressure and torsion in drilling process of drilling machine and using method thereof |
| CN112240813A (en) * | 2020-10-14 | 2021-01-19 | 中国平煤神马能源化工集团有限责任公司 | Vibrating string type three-dimensional stress sensor for deep hole ground stress measurement |
| CN112240813B (en) * | 2020-10-14 | 2021-11-30 | 中国平煤神马能源化工集团有限责任公司 | Vibrating string type three-dimensional stress sensor for deep hole ground stress measurement |
| CN112593915A (en) * | 2020-12-28 | 2021-04-02 | 西北大学 | Device for measuring drilling machine in drilling process in real time and installation method thereof |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170908 Termination date: 20181230 |