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 PDF

Info

Publication number
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
Authority
CN
China
Prior art keywords
probing shell
loess
soil
soil pressure
pressure sensor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201621476312.0U
Other languages
Chinese (zh)
Inventor
王潇
谷天峰
楚迪
封凯强
王晨兴
刘战峰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Northwest University
Northwestern University
Original Assignee
Northwest University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Northwest University filed Critical Northwest University
Priority to CN201621476312.0U priority Critical patent/CN206479268U/en
Application granted granted Critical
Publication of CN206479268U publication Critical patent/CN206479268U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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

For loess and the forced three-dimensional soil pressure sensor of weak soil
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.
CN201621476312.0U 2016-12-30 2016-12-30 For loess and the forced three-dimensional soil pressure sensor of weak soil Expired - Fee Related CN206479268U (en)

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

Publications (1)

Publication Number Publication Date
CN206479268U true CN206479268U (en) 2017-09-08

Family

ID=59751426

Family Applications (1)

Application Number Title Priority Date Filing Date
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

Country Status (1)

Country Link
CN (1) CN206479268U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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

Similar Documents

Publication Publication Date Title
CN107630711B (en) A kind of monitoring device and method of roadway surrounding rock stress and displacement
CN103174122B (en) Lateral stress pore pressure probe used for testing soil static lateral pressure coefficient
CN103235349B (en) Three-dimensional measuring method and measuring system for underground deformation
CN102877492A (en) Negative frictional resistance pile soil displacement measuring device
CN206479268U (en) For loess and the forced three-dimensional soil pressure sensor of weak soil
CN201068574Y (en) Heave hand hammer large long pile strain detection device
CN203249889U (en) Detection device for corrosion of metal pipeline
CN103968883A (en) Sludge detection method and instrument
CN206248252U (en) A kind of anchor pole axial direction dynamometer
CN105352635A (en) Spatial pre-embedded type three-dimensional stress monitoring system and method for underground coal and rock mass
CN107882011B (en) miniature probe with temperature compensation function
CN203420292U (en) Direct-reading type pile foundation displacement detection device
CN207123442U (en) A kind of experimental rig that deep rock-mass deformation is measured by amesdial
CN102852128A (en) Probing method of static penetrometer
CN202809591U (en) Static cone penetration system
CN104181042A (en) Three-axis model tester for testing pressure reduction, percolation, layering and consolidation deformation of soil layer
CN102072775B (en) Portable temperature measuring recorder applied to geotechnical engineering field
CN106768521A (en) For loess and the forced three-dimensional soil pressure sensor and its measuring method of weak soil
CN208845167U (en) A kind of inclinometer reconnoitred for creep deformation stage sliding surface
WO2021027292A1 (en) Roof deformation high precision monitoring and early warning system and method
CN105258829A (en) Underground engineering model test internal space stress measuring device and method
CN209085551U (en) Multi-point type optical fiber grating bottom hole strain gauge
CN108593525A (en) A kind of rock three-dimensional permeability real-time determining device and method
CN110487247A (en) A method of it is comprehensive based on fiber grating high precision monitor pile body
CN206177288U (en) A testing arrangement for component slant angle measuring

Legal Events

Date Code Title Description
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