CN106759215B - A kind of multifunction digital seismic wave hole pressure touching methods test macro - Google Patents
A kind of multifunction digital seismic wave hole pressure touching methods test macro Download PDFInfo
- Publication number
- CN106759215B CN106759215B CN201611100529.6A CN201611100529A CN106759215B CN 106759215 B CN106759215 B CN 106759215B CN 201611100529 A CN201611100529 A CN 201611100529A CN 106759215 B CN106759215 B CN 106759215B
- Authority
- CN
- China
- Prior art keywords
- test macro
- seismic wave
- hole pressure
- methods test
- digital seismic
- 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.)
- Active
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D1/00—Investigation of foundation soil in situ
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Soil Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
A kind of multifunction digital seismic wave hole pressure touching methods test macro provided by the invention, including nose cone (1), pore pressure filter ring (2), sidewall friction cylinder (3), adapter (4), adapting rod (5), antifriction bar (6), feeler lever (7), host computer data acquisition circuit plate (8), depth encoder (9), data acquisition computer (10) and coaxial cable (11)；Coaxial cable (11) passes through antifriction bar (6), feeler lever (7), and one end switches through two power supply lines and two signal lines in extension bar (5), and the other end connects host computer data acquisition circuit plate (8)；The multifunction digital seismic wave hole pressure touching methods test system structure is close rationally, circuit design is reliable, measuring accuracy is high, easy to use, measurement efficiency is high, measurement result is accurate and reliable, reproducible, which provides strong testing tool for civil engineering exploration practices.
Description
Technical field
The invention belongs to geotechnical engineering testing field, in particular to a kind of underground soil body engineering properties evaluation and engineering design
A kind of method that parameter obtains, and in particular to new multi-functional Digital formula seismic wave hole pressure touching methods test macro.
Background technique
Static sounding technology has more than 80 years history so far, refers to the sounding rod pressure that will have contact probe using pressure apparatus
Enter to test soil layer, passes through the penetration resistance of measurement system test soil and side friction power etc., it may be determined that native certain basic physics
Mechanical characteristic, such as deformation modulus, the native allowable bearing of soil.Static sounding, part or complete have been widely applied in the world
Portion is instead of the probing and sampling in engineering investigation.It succeeds in developing electrical measurement static sounding first in nineteen sixty-five and is applied to survey in China
It examines.In recent years with the fast development of sensor technology, there is hole pressure touching methods technology.The technology can provide ground simultaneously
The intensity and seepage flow with consolidation profile of the lower soil body have obtained largely being widely applied in foreign countries.It is domestic also quiet to pore pressure
Power feeler inspection measuring technology is researched and developed, however is not widely applied.Itself main reason is that, domestic hole pressure touching methods
Test macro it is universal there is a problem in that:
1. domestic hole pressure touching methods probe independently measures static point resistance and side friction power using co-deflection column, deposit
The problem of structure is complicated.And the movable property to guarantee sidewall friction cylinder in measurement process, it will usually sidewall friction cylinder it is first,
There are gaps at tail both ends.And the underground soil body is easily accessible in these gaps in penetration process, so that sidewall friction cylinder activity drops
It is low, the transmitting of side friction power is hindered, while the power that can be also subject to nose cone passes to sidewall friction cylinder, to reduce
The accuracy of measurement result.In addition, side friction power is typically small in practice in engineering, it is not easy directly by side friction stress-strain
Piece detects, causes measurement result accuracy insufficient, this problem is especially pronounced in weak soil.
2. no matter domestic hole pressure touching methods test macro uses analog signal or digital signal, data acquisition system
It unites all very backward, structure designs imprecision.Using the data collection system of analog signal, interferes with each other seriously, lead between signal
Cause measurement result inaccuracy.Using the data collection system of digital signal, on the one hand deform static point resistance foil gauge on column and
The power supply of side friction stress-strain piece and arrangement mode are unreasonable, and signal is simultaneously unstable, reduce the reliability of test result；
On the other hand, the digital signal of acquisition is directly passed through cable transmission into host computer acquisition software by existing acquisition system, then
When data transmission failure or signal malfunction in test process, the signal of these mistakes can not be recognized accurately, make
Obtain the data easy to collect to mistake in test process.
3. the depth measurement method of domestic hole pressure touching methods test macro falls behind, main reason is that generalling use people
Part work and part study number, rack-and-pinion combination or photoelectric encoder reading.Artificial number reading method the degree of automation is not high, be easy by it is artificial because
The influence of element；And the gear of specific dimensions is fixed in the injection system of hole pressure touching methods by rack-and-pinion combined method, nothing
Method replacement uses the gear of other sizes, therefore is unfavorable for adjusting the depth sampling interval of test macro, it is difficult to meet different works
The needs of journey prospective design；Photoelectric encoder when injection system moves up and down outside static sounding regardless of can all count, this is just
It is required that counter switch is opened when downward injection by operator's manual operation makes encoder to count, and when moving up
Closing counter switch makes encoder stop counting, and this mode is semi-automatic counting mode, and operation is excessively complicated, not smart enough
Change.
4. domestic and international hole pressure touching methods test macro is all made of single three-component geophone, application is lower opening method and puppet
Time interval measurement principle, measurement is every the shear wave velocity in 1m depth bounds.And the prospecting needs of complex engineering are smaller
Shear wave velocity in depth spacing range is measured using needing to pause at each pilot to be measured when single three-component geophone,
It is laborious time-consuming, it is unfavorable for improving the efficiency of engineering investigation.
In conclusion hole pressure touching methods test macro sonde configuration existing defects, data collection system fall behind both at home and abroad,
The precision for not only reducing cone penetration test result, also adds testing cost.And foreign countries' pore pressure probe is expensive, and event occurs
Maintenance difficult after hindering, is unfavorable for Spread in China application.
Summary of the invention
A kind of a kind of technical problem: the accurate multifunction digital of high, result that the object of the present invention is to provide measurement efficiencies
Seismic wave hole pressure touching methods test macro.
Technical solution: to achieve the above object, a kind of multifunction digital seismic wave pore pressure static(al) touching provided by the invention
Detection test system takes all of conehead, pore pressure filter ring, sidewall friction cylinder, adapter, adapting rod, antifriction bar, feeler lever, host computer data
Collecting circuit board, depth encoder, data acquisition computer and coaxial cable；Coaxial cable passes through antifriction bar, feeler lever, one end
Switch through two power supply lines and two signal lines in extension bar, the other end connects host computer data acquisition circuit plate；
Wherein, nose cone, pore pressure filter ring, sidewall friction cylinder, adapter, adapting rod are sequentially arranged from top to bottom, described
Hole pressure passageway is equipped in nose cone, the lower part in the sidewall friction cylinder is equipped with the detachable power of leading ring, in the detachable power of leading
The upper surface of ring is equipped with deformation column, and the deformation column is equipped with the first aperture, second orifice, hinders in the outside of deformation column equipped with cone
Power electric bridge, injection drag overall electric bridge, the lower part for deforming column are equipped with sensor for pore water pressure；Bottom is equipped with inside the adapting rod to acquire
Plate.
Wherein:
Bottom micro power conditioner, static point resistance independent power source, injection drag overall point are equipped in the bottom collection plate
Power supply, pore pressure independent power source, the first three-component geophone, dipmeter, temperature sensor, bottom main control chip, analog-digital converter, letter
Number conditioning circuit element, bottom CAN transceiver and the second three-component geophone.
The host computer data acquisition circuit plate contains host computer main control chip, upper layer CAN transceiver, CAN string
Mouth converter, upper layer micro power conditioner and input and output serial ports.
The cone angle of the nose cone is 60 °, and cone basal cross section product is 10cm2；Sidewall friction cylinder surface area is 150cm2。
The pore pressure filter ring is with a thickness of 5mm.
The static point resistance electric bridge is by the four small strain pieces and its connecting wire around cylindrical center's axis equidistantly distributed
Composition, and the arrangement mode of four small strain pieces be followed successively by longitudinally, laterally, vertical and horizontal.
The injection drag overall electric bridge by around cylindrical center's axis equidistantly distributed four small strain pieces and its connection lead
Line composition, and the arrangement mode of four small strain pieces be followed successively by longitudinally, laterally, vertical and horizontal.
The coaxial cable is four cores, including two power supply lines and two signal lines, two power supply lines and bottom be miniature
Power supply conditioner be connected, bottom micro power conditioner again respectively with static point resistance independent power source, injection drag overall independent power source, pore pressure
Independent power source is connected with bottom main control chip.
The static point resistance independent power source is connected with static point resistance electric bridge, injection drag overall independent power source and injection drag overall electricity
Bridge is connected, and pore pressure independent power source is connected with sensor for pore water pressure.
Two signal lines of the coaxial cable successively with bottom CAN transceiver, bottom main control chip, analog-to-digital conversion
Device is connected with signal conditioning circuit cell output.
The signal conditioning circuit cell input separately with static point resistance electric bridge, injection drag overall electric bridge,
Sensor for pore water pressure, dipmeter, temperature sensor, the first three-component geophone and the second three-component geophone are connected.
The antifriction bar initial and end both ends cross-sectional area is 10cm2, and wherein cross section product is greater than 10cm2, preferably
15cm2。
There are four the input and output serial ports, wherein first by upper layer micro power conditioner and external power supply phase
Even, second is connected depth encoder with host computer main control chip, and third is a by serial converter and data acquisition computer
It is connected, coaxial cable is connected by the last one with upper layer CAN transceiver.
The host computer main control chip is received with upper layer micro power conditioner, serial converter and upper layer CAN respectively
Device is sent out to be connected.
The distance between described first three-component geophone and the second three-component geophone are 0.2m to 0.8m, preferably
0.5m。
The depth encoder uses displacement sensor for pull rope.
First waterproof grommet, the detachable power of the leading ring are equipped with the second waterproof grommet, the side wall
Anti- native sealing ring is equipped between friction cylinder and adapter, the adapter and adapting rod junction are equipped with third waterproof grommet.
The utility model has the advantages that new multi-functional Digital formula seismic wave hole pressure touching methods test macro provided by the invention, comprehensively
Solve the problems, such as defect existing for domestic hole pressure touching methods test macro and.The medicine have the advantages that
It is sonde configuration simple and stable, compact reliable 1. hole pressure touching methods test macro of the invention.
2. monotropic shape post design, injection drag overall that nose cone and sidewall friction cylinder are subject to is measured respectively and nose cone is independent
The static point resistance being subject to, then side friction power is the difference of injection drag overall and static point resistance.This method directly by static point resistance with
Side friction couple of force is combined, and solves the problems, such as reciprocal effect between the two.
3. hole pressure touching methods test macro of the invention, the interactive interference acquired between signal is reduced to minimum, CAN
Bus transmission model speed is fast, accuracy is high, reduces the redundancy of cable, also allows to check signal and reported an error, electricity
Road design stability is reliable.
4. the present invention is independent by the injection system of depth encoder and hole pressure touching methods, artificial reading is eliminated the reliance on
The mode of number, rack-and-pinion or photoelectric encoder method, realizes depth by data acquisition computer and host computer main control chip
The full-automatic of degree is read, and flexible and convenient to use, applicability is wider.
5. the present invention proposes seismic wave to be detected using two three-component geophones, improve shear wave velocity measurement
Accuracy is particularly suitable in complicated engineering ground.
New multi-functional Digital formula seismic wave hole pressure touching methods test system structure provided by the invention is simple, quality control
Make it is good, easy to use, detection speed it is fast, measurement efficiency is high, measurement result is accurate and reliable, reproducible, which is
Civil engineering exploration practices provide strong testing tool.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of new multi-functional Digital formula seismic wave hole pressure touching methods test macro of the present invention.
Fig. 2 is the structural schematic diagram of nose cone.
Fig. 3 is the structural schematic diagram for deforming column.
Fig. 4 is the foil gauge distribution schematic diagram of static point resistance electric bridge and injection drag overall electric bridge.
Fig. 5 is the structural schematic diagram of bottom collection plate.
Fig. 6 is the structural schematic diagram of host computer data acquisition circuit plate.
In figure: 1- nose cone, 2- pore pressure filter ring, 3- sidewall friction cylinder, 4- adapter, 5- adapting rod, 6- subtract
Rub bar, 7- feeler lever, 8- host computer data acquisition circuit plate, 9- depth encoder, 10- data acquisition computer, and 11- is same
Shaft cable, the hole 12- pressure passageway, the detachable power of the leading ring of 13-, 14- deformation column, 15- static point resistance electric bridge, 16- injection are total
Resistance electric bridge, 17- sensor for pore water pressure, the first aperture of 18-, 19- second orifice, the first waterproof grommet of 20-, 21- second
Waterproof grommet, the anti-native sealing ring of 22-, 23- third waterproof grommet, 24- bottom collection plate, 25- bottom micro power
Conditioner, 26- static point resistance independent power source, 27- injection drag overall independent power source, 28- pore pressure independent power source, the first three-component of 29-
Wave detector, 30- dipmeter, 31- temperature sensor, 32- bottom main control chip, 33- analog-digital converter, 34- signal condition
Circuit element, 35- bottom CAN transceiver, the second three-component geophone of 36-, 37- host computer main control chip, the upper layer 38-
CAN transceiver, 39- input and output serial ports, 40-CAN serial converter, the upper layer 41- micro power conditioner.
Specific embodiment
Multifunction digital seismic wave hole pressure touching methods test macro of the invention is made into one with reference to the accompanying drawing
Walk explanation.
Multifunction digital seismic wave hole pressure touching methods test macro of the invention, is shown in Fig. 1, including nose cone 1, pore pressure
Filter ring 2, sidewall friction cylinder 3, adapter 4, adapting rod 5, antifriction bar 6, feeler lever 7, host computer data acquisition circuit plate 8, depth
Encoder 9, data acquisition computer 10 and coaxial cable 11；Coaxial cable 11 passes through antifriction bar 6, feeler lever 7, and one end is switched through
Two power supply lines and two signal lines in bar 5, the other end connect host computer data acquisition circuit plate 8；Wherein, nose cone 1, pore pressure
Sequence is arranged from top to bottom for filter ring 2, sidewall friction cylinder 3, adapter 4, adapting rod 5, is equipped with hole pressure passageway in the nose cone 1
12, the lower part in the sidewall friction cylinder 3 is equipped with the detachable power of leading ring 13, is equipped with and becomes in the upper surface of the detachable power of leading ring 13
Shape column 14, the deformation column 14 are equipped with the first aperture 18, second orifice 19, are equipped with static point resistance electricity in the outside of deformation column 14
The lower part of bridge 15, injection drag overall electric bridge 16, deformation column 14 is equipped with sensor for pore water pressure 17；Bottom is equipped with inside the adapting rod 5
Collection plate 24.It is total equipped with bottom micro power conditioner 25, static point resistance independent power source 26, injection in the bottom collection plate 24
Resistance independent power source 27, pore pressure independent power source 28, the first three-component geophone 29, dipmeter 30, temperature sensor 31, bottom master control core
Piece 32, analog-digital converter 33, signal conditioning circuit element 34, bottom CAN transceiver 35 and the second three-component geophone 36.Institute
The host computer data acquisition circuit plate 8 stated contains host computer main control chip 37, upper layer CAN transceiver 38, the conversion of CAN serial ports
Device 40, upper layer micro power conditioner 41 and input and output serial ports 39.
As an example, bottom main control chip 32 uses C8051f060, and analog-digital converter 33 is using ADS1211 etc., bottom
Layer CAN transceiver 35 and upper layer CAN transceiver 38 use PCA82C250, and host computer main control chip 37 uses LPC2119,
CAN serial converter 40 uses USB-CAN, and depth encoder 9 uses MP5-M-1500.
In the present invention, the cone angle of nose cone 1 is 60 °, and cone basal cross section product is 10cm2；3 surface area of sidewall friction cylinder is
150cm2。
In the present invention, pore pressure filter ring 2 is with a thickness of 5mm.
In the present invention, static point resistance electric bridge 15 is by around four small strain pieces of cylindrical center's axis equidistantly distributed and its connection
Conducting wire composition, and the arrangement mode of four small strain pieces be followed successively by longitudinally, laterally, vertical and horizontal.
In the present invention, injection drag overall electric bridge 16 is by around four small strain pieces of cylindrical center's axis equidistantly distributed and its company
Connect conducting wire composition, and the arrangement mode of four small strain pieces be followed successively by longitudinally, laterally, vertical and horizontal.
In the present invention, coaxial cable 11 is four cores, including two power supply lines and two signal lines.
In the present invention, two cables of coaxial cable 11 are connected with bottom micro power conditioner 25, bottom micro electric
Source conditioner 25 again respectively with static point resistance independent power source 26, injection drag overall independent power source 27, pore pressure independent power source 28 and bottom master control
Chip 32 is connected；
In the present invention, static point resistance independent power source 26 is connected with static point resistance electric bridge 15, injection drag overall independent power source 27 with pass through
Enter drag overall electric bridge 16 to be connected, pore pressure independent power source 28 is connected with sensor for pore water pressure 17.
In the present invention, 34 input terminal of signal conditioning circuit element is separately always hindered with static point resistance electric bridge 15, injection
Power electric bridge 16, sensor for pore water pressure 17, dipmeter 30, temperature sensor 31, the first three-component geophone 29 and the inspection of the second three-component
Wave device 36 is connected.
In the present invention, two signal lines of coaxial cable 11 successively with bottom CAN transceiver 35, bottom main control chip
32, analog-digital converter 33 is connected with 34 output end of signal conditioning circuit element.
In the present invention, 6 initial and end both ends cross-sectional area of antifriction bar is 10cm2, and wherein cross section product is greater than 10cm2,
It is preferred that 15cm2。
In the present invention, there are four input and output serial ports 39, one of them is by upper layer micro power conditioner 41 and external electricity
Source is connected, and depth encoder 9 is connected by another with host computer main control chip 37, another is by 40 sum number of CAN serial converter
It is connected according to collecting computer 10, coaxial cable 11 is connected by the last one with upper layer CAN transceiver 38.
In the present invention, host computer main control chip 37 respectively with upper layer micro power conditioner 41, serial converter 40 and on
Layer CAN transceiver 38 is connected.
In the present invention, the distance between the first three-component geophone 29 and the second three-component geophone 36 be 0.2m extremely
0.8m, preferably 0.5m.
In the present invention, the preferred displacement sensor for pull rope of depth encoder 9.
Before use, depth encoder 9 is fixed in external static sounding injection equipment.In use, probe is outside
Under the action of portion's static sounding injection equipment in the soil body of injection underground, nose cone 1 is acted on by soil body penetration resistance, causes to deform
The front end of column 14 deforms, and deforms the rear end effect by injection drag overall on socket cap 1 and sidewall friction cylinder 3 simultaneously of column 14
And be deformed, displacement signal is converted to telecommunications by electrical bridge principle by static point resistance electric bridge 15 and injection drag overall electric bridge 16
Number.Pore water through hole press filtration ring 2 and hole pressure passageway 12 around popping one's head in act on sensor for pore water pressure 17, sensor for pore water pressure
Pressure signal is converted to electric signal by 17.Then collected static point resistance, side friction power and pore water pressure force electrical signal are logical
It crosses inner lead and is transmitted to signal conditioning circuit element 34, carry out signal amplification and noise filtering, be then transmit to analog-to-digital conversion
Device 33 is converted to digital signal.Digital signal after conversion is transferred to bottom CAN transceiver 35 by bottom main control chip 32,
CAN signal is converted to, host computer data acquisition circuit plate 8 is then transmitted to by coaxial cable 11.Bottom main control chip 32 is controlled
The function of each element in system and management bottom collection plate 24, realizes the intelligent operation of entire circuit system.In host computer data
On collecting circuit board 8, under the control of host computer main control chip 37, the CAN signal that coaxial cable 11 transmits connects by upper layer CAN
Transceiver 38 receives, and is then transmit to CAN serial converter 40 and is converted to usb signal, passes eventually by input and output serial ports 39
It transports in data acquisition computer 10.
The mode counted using existing rack-and-pinion or photoelectric encoder method is simple and reliable and at low cost, but
Have certain problems, rack-and-pinion or photoelectric encoder regardless of can all be counted when hydraulic stem moves up and down, this requires by
Counter switch is opened in operator's manual operation when hydraulic stem downward injection counts rack-and-pinion or photoelectric encoder,
And counter switch is closed when hydraulic stem moves up makes rack-and-pinion or photoelectric encoder stop counting, this mode be half from
Dynamic counting mode.In order to reduce the complexity of system operatio, the full-automatic counting of depth of penetration is realized, and depth measurement is facilitated to fill
The replacement at any time set, the application directly separate depth encoder 9 and injection system, and core component is that drawstring displacement passes
Sensor.The displacement signal that depth encoder 9 issues is transmitted in host computer main control chip 37 by input and output serial ports 39, then
It is transmitted in data acquisition computer 10.Under the control of data acquisition computer 10 and host computer main control chip 37, work as drawstring
When the drawstring elongation of displacement sensor, the not variation of registered depth；And when the drawstring of displacement sensor for pull rope shortens, then it records
The variation of depth, the final full-automatic acquisition for realizing depth.
Antifriction bar 6 slightly expands the diameter of penetration hole, can not influence static point resistance and side friction power measurement
Under precondition, probe surrounding soil is reduced to the frictional force of feeler lever 7, is passed through so as to realize that energy consumption is lower, depth is bigger
Enter test.The power that nose cone 1 is subject to is passed to deformation column 14 by the detachable power of leading ring 13, is avoided as much as that side wall is caused to rub
Wipe the movement of cylinder 3.Small strain piece in static point resistance electric bridge 15 and injection drag overall electric bridge 16 has been all made of around deformation column in vertical
To, the arrangement mode that is distributed of transverse direction, vertical and horizontal, it can resist interfering with each other between small strain piece signal, improve cone
The stability and accuracy of resistance and injection drag overall.First aperture 18 and second orifice 19 are used to guide probe inner lead
Connection.First waterproof grommet 20, the second waterproof grommet 21 and third waterproof grommet 23 prevent underground water from entering in probe
Portion avoids circuit that short circuit occurs.Anti- soil sealing ring 22 prevents the soil body to be blocked in the tail end of sidewall friction cylinder 3, on the one hand avoids soil
Into in the circuit of probe, the accuracy of side friction power measurement result is on the other hand improved.
It is provided with bottom micro power conditioner 25 on bottom collection plate 24, two power supply lines in coaxial cable 11 are provided
Voltage distribute to static point resistance independent power source 26, injection drag overall independent power source 27 and pore pressure independent power source 28, then respectively give cone
Resistance electric bridge 15, injection drag overall electric bridge 16 and sensor for pore water pressure 17 are powered, and are avoided the current interference between different elements, are mentioned
The high stability of measurement result.Provided with dipmeter 30, the measurement of probe tilt angle in underground injection is realized, is used for
The measurement result of depth of penetration is corrected, while convenient for the penetration process of control probe, avoiding tilting the excessive folding for leading to feeler lever 7
It is disconnected.Built-in temperature sensor 31 realizes the measurement of probe temperature on bottom collection plate 24, is used for temperature-compensating, improves test knot
The accuracy of fruit.Bottom CAN transceiver 35, host computer main control chip 37 and upper layer CAN transceiver 38 turn digital signal
CAN signal is changed to be transmitted and encoded, it is advantageous that: on the one hand, CAN bus transmission technology allows to check signal
With the function of reporting an error, identified so as to the measuring signal to mistake；On the other hand, CAN signal transmission speed faster, resists
Interference performance is stronger, and the information of transmission can be retransmitted automatically after being destroyed.Therefore, hole pressure touching methods test macro of the invention
Reliability can be significantly improved.
Static point resistance is independently measured by static point resistance electric bridge 15 and is obtained, and injection drag overall passes through static point resistance electric bridge 15
It is obtained with 16 combined measurement of injection drag overall electric bridge.The resistance that note nose cone 1 is subject to is F1, nose cone bottom cross section is A1；
The drag overall that sidewall friction cylinder 3 and nose cone 1 are subject to is F2, the surface area of sidewall friction cylinder 3 is A2.Then sidewall friction cylinder 3 by
Power be F2–F1, static point resistance qcWith side friction power fsIt obtains as follows respectively:
When needing to pause in specified depth when some depth carries out seismic wave test, then used in earth's surface
The modes such as weight percussion excite shearing wave, when being detected respectively by the first three-component geophone 29 and the second three-component geophone 36
Between signal.Remember that the distance between two three-component geophones are L, the time signal difference detected is t, then in the depth that length is L
It spends in interval, the shear wave velocity for surrounding soil of popping one's head in is v=L/t.Compared with the pseudo-time partitioning method of lower opening method, this side
True depth spacing and time interval is utilized in method, therefore the shear wave velocity measured is more accurate.And since distance L is smaller than
1m, measurement result are finer.This two three-component geophones can be equally used for making in the pseudo-time partitioning method of lower opening method
With more flexible and convenient.
The present invention comprehensively change to the probe and data collection system of domestic and international hole pressure touching methods test macro
Into having rationally designed the structure and measuring principle of probe, improved to internal circuitry, enabled static sounding technology
It is more acurrate, stable, reliable and comprehensively serve geotechnical engineering field.
Claims (16)
1. a kind of multifunction digital seismic wave hole pressure touching methods test macro, it is characterised in that: including nose cone (1), hole
Press filtration ring (2), sidewall friction cylinder (3), adapter (4), adapting rod (5), antifriction bar (6), feeler lever (7), host computer data are adopted
Collector plate (8), depth encoder (9), data acquisition computer (10) and coaxial cable (11)；
Coaxial cable (11) passes through antifriction bar (6), feeler lever (7), and one end switches through two power supply lines and two letters in extension bar (5)
Number line, the other end connect host computer data acquisition circuit plate (8)；
Wherein, nose cone (1), pore pressure filter ring (2), sidewall friction cylinder (3), adapter (4), adapting rod (5) are suitable from top to bottom
Sequence setting, the nose cone (1) is interior to be equipped with hole pressure passageway (12), and the lower part in the sidewall friction cylinder (3) is equipped with detachable
Power ring (13) are led, are equipped with deformation column (14) in the upper surface of the detachable power of leading ring (13), the deformation column (14) is equipped with first
Aperture (18), second orifice (19) are equipped with static point resistance electric bridge (15), injection drag overall electric bridge in the outside of deformation column (14)
(16), the lower part for deforming column (14) is equipped with sensor for pore water pressure (17)；Bottom collection plate (24) are equipped with inside the adapting rod (5)；
Bottom micro power conditioner (25), static point resistance independent power source (26), injection are equipped in the bottom collection plate (24)
Drag overall independent power source (27), pore pressure independent power source (28), the first three-component geophone (29), dipmeter (30), temperature sensor
(31), bottom main control chip (32), analog-digital converter (33), signal conditioning circuit element (34), bottom CAN transceiver (35)
With the second three-component geophone (36).
2. a kind of multifunction digital seismic wave hole pressure touching methods test macro according to claim 1, feature exist
In: the host computer data acquisition circuit plate (8) contain host computer main control chip (37), upper layer CAN transceiver (38),
CAN serial converter (40), upper layer micro power conditioner (41) and input and output serial ports (39).
3. a kind of multifunction digital seismic wave hole pressure touching methods test macro according to claim 1, feature exist
In: the cone angle of the nose cone (1) is 60 °, and cone basal cross section product is 10 cm2；Sidewall friction cylinder (3) surface area is 150 cm2。
4. a kind of multifunction digital seismic wave hole pressure touching methods test macro according to claim 1, feature exist
In: the pore pressure filter ring (2) is with a thickness of 5 mm.
5. a kind of multifunction digital seismic wave hole pressure touching methods test macro according to claim 1, feature exist
In: the static point resistance electric bridge (15) is by the four small strain pieces and its connecting wire group around cylindrical center's axis equidistantly distributed
At, and the arrangement mode of four small strain pieces be followed successively by longitudinally, laterally, vertical and horizontal.
6. a kind of multifunction digital seismic wave hole pressure touching methods test macro according to claim 1, feature exist
In: the injection drag overall electric bridge (16) is by the four small strain pieces and its connecting wire around cylindrical center's axis equidistantly distributed
Composition, and the arrangement mode of four small strain pieces be followed successively by longitudinally, laterally, vertical and horizontal.
7. a kind of multifunction digital seismic wave hole pressure touching methods test macro according to claim 1, feature exist
In: the coaxial cable (11) be four cores, including two power supply lines and two signal lines, two power supply lines and bottom micro electric
Source conditioner (25) be connected, bottom micro power conditioner (25) again respectively with static point resistance independent power source (26), injection drag overall
Independent power source (27), pore pressure independent power source (28) are connected with bottom main control chip (32).
8. a kind of multifunction digital seismic wave hole pressure touching methods test macro according to claim 7, feature exist
In: the static point resistance independent power source (26) is connected with static point resistance electric bridge (15), injection drag overall independent power source (27) and injection
Drag overall electric bridge (16) is connected, and pore pressure independent power source (28) is connected with sensor for pore water pressure (17).
9. a kind of multifunction digital seismic wave hole pressure touching methods test macro according to claim 7, feature exist
In: two signal lines of the coaxial cable (11) successively with bottom CAN transceiver (35), bottom main control chip (32),
Analog-digital converter (33) is connected with signal conditioning circuit element (34) output end.
10. a kind of multifunction digital seismic wave hole pressure touching methods test macro according to claim 1, feature exist
In: described signal conditioning circuit element (34) input terminal is separately electric with static point resistance electric bridge (15), injection drag overall
Bridge (16), sensor for pore water pressure (17), dipmeter (30), temperature sensor (31), the first three-component geophone (29) and the two or three
Component wave detector (36) is connected.
11. a kind of multifunction digital seismic wave hole pressure touching methods test macro according to claim 1, feature exist
In: antifriction bar (6) the initial and end both ends cross-sectional area is 10 cm2, and wherein cross section product is greater than 10 cm2。
12. a kind of multifunction digital seismic wave hole pressure touching methods test macro according to claim 2, feature exist
In: there are four the input and output serial ports (39), wherein first by upper layer micro power conditioner (41) and external power supply
It is connected, second is connected depth encoder (9) with host computer main control chip (37), and third is a by serial converter (40) sum number
It is connected according to collecting computer (10), coaxial cable (11) is connected by the last one with upper layer CAN transceiver (38).
13. a kind of multifunction digital seismic wave hole pressure touching methods test macro according to claim 2, feature exist
In: the host computer main control chip (37) respectively with upper layer micro power conditioner (41), serial converter (40) and upper layer
CAN transceiver (38) is connected.
14. a kind of multifunction digital seismic wave hole pressure touching methods test macro according to claim 1, feature exist
In: the distance between described first three-component geophone (29) and the second three-component geophone (36) they are 0.2 m to 0.8 m.
15. a kind of multifunction digital seismic wave hole pressure touching methods test macro according to claim 1, feature exist
In: the depth encoder (9) uses displacement sensor for pull rope.
16. a kind of multifunction digital seismic wave hole pressure touching methods test macro according to claim 1, feature exist
In: the detachable power of the leading ring (13) is equipped with the second waterproof grommet (21), the sidewall friction cylinder (3) and adapter
(4) anti-native sealing ring (22) is equipped between, the adapter (4) and adapting rod (5) junction are equipped with third waterproof grommet
(23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611100529.6A CN106759215B (en) | 2016-12-02 | 2016-12-02 | A kind of multifunction digital seismic wave hole pressure touching methods test macro |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611100529.6A CN106759215B (en) | 2016-12-02 | 2016-12-02 | A kind of multifunction digital seismic wave hole pressure touching methods test macro |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106759215A CN106759215A (en) | 2017-05-31 |
| CN106759215B true CN106759215B (en) | 2019-03-05 |
Family
ID=58883645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611100529.6A Active CN106759215B (en) | 2016-12-02 | 2016-12-02 | A kind of multifunction digital seismic wave hole pressure touching methods test macro |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106759215B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107100214A (en) * | 2017-06-16 | 2017-08-29 | 中交第航务工程勘察设计院有限公司 | Stake resistance simulation test device |
| CN107882011B (en) * | 2017-11-29 | 2019-12-17 | 东南大学 | miniature probe with temperature compensation function |
| CN109799144B (en) * | 2019-03-08 | 2022-09-02 | 曹增国 | Rock-soil layer in-situ lateral pressure testing device and method |
| CN110266570A (en) * | 2019-05-29 | 2019-09-20 | 东南大学 | It is a kind of based on internet and cloud platform can remote transmission CPTU system |
| CN110409404A (en) * | 2019-07-11 | 2019-11-05 | 东南大学 | It is a kind of can speed change in real time the continuous perforation device of hole pressure touching methods dynamic and its application method |
| CN112411510A (en) * | 2020-10-19 | 2021-02-26 | 深圳亚纳海洋科技有限公司 | Static sounding device based on controllable radioactive source and testing method thereof |
| CN114217045A (en) * | 2021-11-25 | 2022-03-22 | 东南大学 | Seismic wave static sounding calibration tank system and using method thereof |
| CN114277757B (en) * | 2021-12-17 | 2023-04-28 | 中国计量大学 | Multi-deformation annular column pore-pressure static sounding probe mechanical structure for measuring soft and hard soil layer by one rod |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201738295U (en) * | 2010-08-03 | 2011-02-09 | 武汉磐索地勘科技有限公司 | Probe for cone penetration test |
| CN102174808A (en) * | 2011-02-24 | 2011-09-07 | 中国地质大学（武汉） | Piezocone penetration test (CPTU) prober of dual-deformed column |
| CN202899118U (en) * | 2012-10-30 | 2013-04-24 | 台州市建元工程勘察仪器有限公司 | Multifunctional static sounding data acquisition instrument |
| WO2014129704A1 (en) * | 2013-02-19 | 2014-08-28 | 부산대학교 산학협력단 | Cone penetration testing device with double-hollow-pipe structure for measuring horizontal resistance of ground |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2961607B1 (en) * | 1998-08-07 | 1999-10-12 | 鹿島建設株式会社 | Penetration sensor for cone penetration test |
-
2016
- 2016-12-02 CN CN201611100529.6A patent/CN106759215B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201738295U (en) * | 2010-08-03 | 2011-02-09 | 武汉磐索地勘科技有限公司 | Probe for cone penetration test |
| CN102174808A (en) * | 2011-02-24 | 2011-09-07 | 中国地质大学（武汉） | Piezocone penetration test (CPTU) prober of dual-deformed column |
| CN202899118U (en) * | 2012-10-30 | 2013-04-24 | 台州市建元工程勘察仪器有限公司 | Multifunctional static sounding data acquisition instrument |
| WO2014129704A1 (en) * | 2013-02-19 | 2014-08-28 | 부산대학교 산학협력단 | Cone penetration testing device with double-hollow-pipe structure for measuring horizontal resistance of ground |
Non-Patent Citations (1)
| Title |
|---|
| 静力触探技术中探头的机械结构设计;康晓娟等;《地质装备》;20090630;第10卷(第3期);第18-19页 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106759215A (en) | 2017-05-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106759215B (en) | A kind of multifunction digital seismic wave hole pressure touching methods test macro | |
| CN111379550B (en) | System for be used for monitoring dynamic parameter in pit | |
| CN106546366B (en) | A kind of umbellate form deep hole three-dimensional stress and displacement comprehensive test device | |
| CN106437854B (en) | Distributed coal rock dynamic disaster acoustic-electric synchronous monitoring system and method | |
| CN109812259A (en) | A kind of coal mining drilling multi objective test device and method | |
| CN103134855A (en) | Underground gas storage well wall automation comprehensive detection system and detection method | |
| CN107478196A (en) | Geotechnical stratified settlement measurement method and measuring system | |
| CN205002729U (en) | Underground warp measuring device based on deviational survey and hall effect | |
| CN102913286A (en) | Drilling cutting method impact dangerousness detection automation analyzing system and method for coal mines | |
| CN201429486Y (en) | Probe type soil body pore space water pressure measuring meter | |
| CN105180795A (en) | Rock and soil mass deformation measurement method and instrument system based on deviation survey and Hall effect | |
| CN205100258U (en) | Deep cement stirring pile driving construction data monitoring device | |
| CN202850009U (en) | Micro static penetrometer | |
| CN101089564A (en) | Level measurement instrument | |
| CN202899118U (en) | Multifunctional static sounding data acquisition instrument | |
| CN104515551A (en) | Automatic telescopic detector | |
| CN110242643A (en) | A kind of hydraulic support advancing jack stroke automatic measurement and control method | |
| CN204388907U (en) | A kind of automatic telescopic detector | |
| CN106828929A (en) | A kind of unmanned plane wind speed and humidity measurement device | |
| CN218728109U (en) | Long-distance horizontal drilling geophysical prospecting device | |
| CN203909309U (en) | Apparatus for acquiring underground three-component seismic wave | |
| CN106370818A (en) | Multi-depth multi-index soil property detection rod | |
| CN205679223U (en) | A kind of geology monitoring device | |
| CN203285417U (en) | Diving drill operation parameter monitoring instrument | |
| CN205135618U (en) | Minor diameter formation tester |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |