CN106759215A - A kind of multifunction digital seismic wave hole pressure touching methods test system - Google Patents
A kind of multifunction digital seismic wave hole pressure touching methods test system Download PDFInfo
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- CN106759215A CN106759215A CN201611100529.6A CN201611100529A CN106759215A CN 106759215 A CN106759215 A CN 106759215A CN 201611100529 A CN201611100529 A CN 201611100529A CN 106759215 A CN106759215 A CN 106759215A
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- hole pressure
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- 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
Abstract
A kind of multifunction digital seismic wave hole pressure touching methods test system that the present invention is provided, 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)；Through antifriction bar (6), feeler lever (7), its one end switches through two power lines and two signal lines in extension bar (5) to coaxial cable (11), and the other end connects host computer data acquisition circuit plate (8)；The multifunction digital seismic wave hole pressure touching methods test system structure closely rationally, circuit design is reliable, measuring accuracy is high, easy to use, measurement efficiency is high, measurement result accurately and reliably, it is reproducible, the test system provides strong testing tool for civil engineering exploration practices.
Description
Technical field
The invention belongs to Geotechnical Engineering testing field, more particularly to a kind of underground soil body engineering properties is evaluated and engineering design
A kind of method of parameter acquiring, and in particular to new multi-functional Digital formula seismic wave hole pressure touching methods test system.
Background technology
Static sounding technology has the history of more than 80 years so far, refers to the sounding rod pressure that will have contact probe using pressure apparatus
Enter to test soil layer, penetration resistance and side friction power of soil etc. are tested by measurement system, it may be determined that some basic physics of soil
Mechanical characteristic, such as native deformation modulus, the allowable bearing of soil.In the world extensively using static sounding, part or complete
Portion instead of the probing and sampling in engineering investigation.China succeeds in developing electrical measurement static sounding in nineteen sixty-five and is applied to survey first
Examine.In recent years with the fast development of sensor technology, hole pressure touching methods technology is occurred in that.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 abroad.It is domestic also quiet to pore pressure
Power feeler inspection measuring technology is researched and developed, but is not widely applied.Itself main reason is that, domestic hole pressure touching methods
Test system 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 post, deposits
In baroque problem.And be the movable property for ensureing sidewall friction cylinder in measurement process, it will usually sidewall friction cylinder it is first,
Leave gap in tail two ends.And the underground soil body is easily accessible in these gaps in penetration process so that sidewall friction cylinder activity drop
It is low, the transmission of side friction power is hindered, while the power that can be also subject to nose cone passes to sidewall friction cylinder, so as to reduce
The accuracy of measurement result.Additionally, side friction power is typically small in being put into practice in engineering, it is difficult directly by side friction stress-strain
Piece is detected, and causes measurement result accuracy not enough, and this problem is especially pronounced in weak soil.
2. domestic hole pressure touching methods test system, no matter using analog signal or data signal, its data acquisition system
All very backward, the structure design imprecision of system.Interfered with each other using the data collecting system of analog signal, between signal seriously, led
Cause measurement result inaccurate.Using the data collecting system of data signal, static point resistance foil gauge on the one hand on deformation post and
The power supply of side friction stress-strain piece and arrangement mode are unreasonable, and its signal is simultaneously unstable, reduces the reliability of test result；
On the other hand, the data signal that existing acquisition system will be gathered directly passes through in cable transmission to host computer acquisition software, then
When data transfer failure or signal malfunction in test process, these wrong signals can not be recognized accurately, make
Obtain the easy data for collecting mistake in test process.
3. the depth measurement method of domestic hole pressure touching methods test system falls behind, and it is main reason is that generally use people
Part work and part study number, rack-and-pinion combination or photoelectric encoder reading.Artificial number reading method automaticity is not high, easily by it is artificial because
The influence of element；And be fixed on the gear of specific dimensions in the injection system of hole pressure touching methods by rack-and-pinion combined method, nothing
Method is changed using the gear of other sizes, therefore is unfavorable for adjusting the depth sampling interval of test system, it is difficult to meet different works
The need for journey prospective design；, no matter can all be counted when injection system is moved up and down outside static sounding, this is just for photoelectric encoder
It is required that encoder to count is made by the manually operated counter switch of being opened when downward injection of operating personnel, 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 enough intelligently
Change.
4. domestic and international hole pressure touching methods test system uses single three-component geophone, and application is lower opening method and puppet
Time interval measurement principle, measurement is every the shear wave velocity in 1m depth boundses.And the prospecting needs of complex engineering are smaller
Shear wave velocity in depth spacing range, needs the measurement that paused at each pilot to be measured during using single three-component geophone,
It is laborious time-consuming, it is unfavorable for improving the efficiency of engineering investigation.
In sum, domestic and international hole pressure touching methods test system sonde configuration existing defects, data collecting system falls behind,
The precision of cone penetration test result is not only reduced, testing cost is also add.And foreign countries' pore pressure probe is expensive, and there is event
Maintenance difficult after barrier, is unfavorable for Spread in China application.
The content of the invention
Technical problem：It is an object of the invention to provide a kind of measurement efficiency is high, a kind of accurate multifunction digital of result
Seismic wave hole pressure touching methods test system.
Technical scheme：To achieve the above object, a kind of multifunction digital seismic wave pore pressure static(al) that the present invention is provided is touched
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, its one end
Switch through two power lines and two signal lines in extension bar, the other end connects host computer data acquisition circuit plate；
Wherein, order is set from top to bottom for nose cone, pore pressure filter ring, sidewall friction cylinder, adapter, adapting rod, described
Pore pressure passage is provided with nose cone, the bottom in the sidewall friction cylinder is provided with the detachable power of leading ring, in the detachable power of leading
Deformation post is provided with above ring, the deformation post is provided with the first aperture, second orifice, cone resistance is provided with the outside of deformation post
Power electric bridge, injection drag overall electric bridge, the bottom for deforming post are provided with sensor for pore water pressure；Bottom collection is provided with inside the adapting rod
Plate.
Wherein：
Bottom micro power conditioner, static point resistance independent power source, injection drag overall point are provided with described 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 modulate circuit element, bottom CAN transceiver and the second three-component geophone.
Described host computer data acquisition circuit plate contains host computer main control chip, upper strata CAN transceiver, CAN strings
Mouth converter, upper strata micro power conditioner and input and output serial ports.
The cone angle of described nose cone is 60 °, and cone basal cross section product is 10cm2；Sidewall friction cylinder surface area is 150cm2。
Described pore pressure filtering ring thickness is 5mm.
Described static point resistance electric bridge is by the four small strain pieces and its connecting wire around cylindrical center's axle equidistantly distributed
Composition, and four small strain pieces arrangement mode be followed successively by longitudinally, laterally, vertical and horizontal.
Described injection drag overall electric bridge is led by four small strain pieces around cylindrical center's axle equidistantly distributed and its connection
Line constitute, and four small strain pieces arrangement mode be followed successively by longitudinally, laterally, vertical and horizontal.
Described coaxial cable is four cores, including two power lines and two signal lines, two power lines are miniature with bottom
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.
Described static point resistance independent power source is connected with static point resistance electric bridge, and injection drag overall independent power source is electric with injection drag overall
Bridge is connected, and pore pressure independent power source is connected with sensor for pore water pressure.
Two signal lines of described coaxial cable successively with bottom CAN transceiver, bottom main control chip, analog-to-digital conversion
Device is connected with signal conditioning circuit cell output.
Described 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.
Described antifriction bar initial and end two ends cross-sectional area is 10cm2, and wherein cross section product is greater than 10cm2, preferably
15cm2。
Described input and output serial ports has four, wherein first by upper strata micro power conditioner and external power supply phase
Even, second is connected depth encoder with host computer main control chip, and the 3rd by serial converter and data acquisition computer
It is connected, with upper strata CAN transceiver be connected coaxial cable by last.
Described host computer main control chip is received with upper strata micro power conditioner, serial converter and upper strata CAN respectively
Hair device is connected.
The distance between the first described three-component geophone and the second three-component geophone are 0.2m to 0.8m, preferably
0.5m。
Described depth encoder uses displacement sensor for pull rope.
The first described waterproof grommet, the detachable power of the leading ring is provided with the second waterproof grommet, the side wall
Anti- native sealing ring is provided between friction cylinder and adapter, the adapter is provided with the 3rd waterproof grommet with adapting rod junction.
Beneficial effect：The new multi-functional Digital formula seismic wave hole pressure touching methods test system that the present invention is provided, comprehensively
Solve defect and problem that domestic hole pressure touching methods test system is present.Present invention has the advantages that：
1. hole pressure touching methods test system of the invention, its sonde configuration simple and stable, compact reliability.
2. monotropic shape post design, measures injection drag overall that nose cone is subject to sidewall friction tin 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.The 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 system of the invention, interactive interference between its collection signal is reduced to minimum, CAN
Bus transmission model speed is fast, accuracy is high, reduce the redundancy of cable, also allows to check signal and reported an error, electricity
Road design stability reliability.
4. the present invention is independent with the injection system of hole pressure touching methods by depth encoder, eliminates the reliance on people's part work and part study
The mode of number, rack-and-pinion or photoelectric encoder method, depth is realized by data acquisition computer and host computer main control chip
The full-automatic reading of degree, flexible and convenient to use, applicability is wider.
5. it is of the invention to propose to detect seismic wave using two three-component geophones, improve shear wave velocity measurement
Accuracy, is particularly suitable in the engineering ground of complexity.
The new multi-functional Digital formula seismic wave hole pressure touching methods test system structure for providing of the invention is simple, quality control
Make good, easy to use, detection speed it is fast, measurement efficiency is high, measurement result accurately and reliably, it is reproducible, the test system is
Civil engineering exploration practices provide strong testing tool.
Brief description of the drawings
Fig. 1 is the structural representation of new multi-functional Digital formula seismic wave hole pressure touching methods test system of the present invention.
Fig. 2 is the structural representation of nose cone.
Fig. 3 is the structural representation for deforming post.
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 representation of bottom collection plate.
Fig. 6 is the structural representation of host computer data acquisition circuit plate.
In figure：1- nose cones, 2- pore pressure filter rings, 3- sidewall frictions cylinder, 4- adapters, 5- adapting rods, 6- subtracts
Rub bar, 7- feeler levers, and 8- host computer data acquisition circuit plates, 9- depth encoders, 10- data acquisition computers, 11- is same
Shaft cable, 12- pore pressure passages, the detachable power of the leading rings of 13-, 14- deformation posts, 15- static point resistance electric bridges, 16- injection is total
Resistance electric bridge, 17- sensor for pore water pressure, the apertures of 18- first, 19- second orifices, the waterproof grommets of 20- first, 21- second
Waterproof grommet, the anti-native sealing rings of 22-, the waterproof grommets of 23- the 3rd, 24- bottom collection plates, 25- bottom micro powers
Conditioner, 26- static point resistance independent power sources, 27- injection drag overall independent power sources, 28- pore pressure independent power sources, the three-components of 29- first
Wave detector, 30- dipmeters, 31- temperature sensors, 32- bottom main control chips, 33- analog-digital converters, 34- signal conditions
Circuit element, 35- bottom CAN transceiver, the three-component geophones of 36- second, 37- host computer main control chips, 38- upper stratas
CAN transceiver, 39- input and output serial ports, 40-CAN serial converters, 41- upper stratas micro power conditioner.
Specific embodiment
Multifunction digital seismic wave hole pressure touching methods test system of the invention is made into one below in conjunction with the accompanying drawings
Step explanation.
Multifunction digital seismic wave hole pressure touching methods test system 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 its one end is switched through
Two power 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
Order is set from top to bottom for filter ring 2, sidewall friction cylinder 3, adapter 4, adapting rod 5, and pore pressure passage is provided with the nose cone 1
12, the bottom in the sidewall friction cylinder 3 is provided with the detachable power of leading ring 13, and change is provided with above the detachable power of leading ring 13
Shape post 14, the deformation post 14 is provided with the first aperture 18, second orifice 19, and static point resistance electricity is provided with the outside of deformation post 14
Bridge 15, injection drag overall electric bridge 16, the bottom for deforming post 14 are provided with sensor for pore water pressure 17；Bottom is provided with inside the adapting rod 5
Collection plate 24.It is total bottom micro power conditioner 25, static point resistance independent power source 26, injection to be provided with described 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 strata CAN transceiver 38, CAN serial ports conversions
Device 40, upper strata micro power conditioner 41 and input and output serial ports 39.
Used as a kind of example, bottom main control chip 32 uses C8051f060, and analog-digital converter 33 is using ADS1211 etc., bottom
Layer CAN transceiver 35 and upper strata CAN transceiver 38 use PCA82C250, host computer main control chip 37 to use LPC2119,
CAN serial converters 40 use USB-CAN, depth encoder 9 to use MP5-M-1500.
In the present invention, the cone angle of nose cone 1 is 60 °, and cone basal cross section product is 10cm2；Sidewall friction cylinder 3 surface areas be
150cm2。
In the present invention, the thickness of pore pressure filter ring 2 is 5mm.
In the present invention, static point resistance electric bridge 15 is by around four small strain pieces of cylindrical center's axle equidistantly distributed and its connection
Wire constitute, and four small strain pieces arrangement mode 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 axle equidistantly distributed and its company
Connect wire composition, and four small strain pieces arrangement mode be followed successively by longitudinally, laterally, vertical and horizontal.
In the present invention, coaxial cable 11 is four cores, including two power 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, the input of signal conditioning circuit element 34 separately always hinders with static point resistance electric bridge 15, injection
The inspection of power electric bridge 16, sensor for pore water pressure 17, dipmeter 30, temperature sensor 31, the first three-component geophone 29 and the second three-component
Ripple 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
32nd, analog-digital converter 33 is connected with the output end of signal conditioning circuit element 34.
In the present invention, the initial and end two ends cross-sectional area of antifriction bar 6 is 10cm2, and wherein cross section product is greater than 10cm2,
It is preferred that 15cm2。
In the present invention, input and output serial ports 39 has four, and one of them is by upper strata micro power conditioner 41 and external electricity
Source is connected, and with host computer main control chip 37 be connected depth encoder 9 by another, and another is by the sum of CAN serial converters 40
It is connected according to collecting computer 10, with upper strata CAN transceiver 38 be connected coaxial cable 11 by last.
In the present invention, host computer main control chip 37 respectively with upper strata 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.
Using preceding, depth encoder 9 is fixed in outside static sounding injection equipment.When using, probe is outside
In the presence 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 deformation
The front end deformation of post 14, and the rear end for deforming post 14 is acted on by injection drag overall on socket cap 1 and sidewall friction cylinder 3 simultaneously
And be deformed, displacement signal is converted to telecommunications by static point resistance electric bridge 15 and injection drag overall electric bridge 16 by electrical bridge principle
Number.Pore water around popping one's head in is acted on sensor for pore water pressure 17 by pore pressure filter ring 2 and pore pressure passage 12, sensor for pore water pressure
Pressure signal is converted to electric signal by 17.Then static point resistance, side friction power and the pore water pressure force electrical signal for collecting lead to
Cross inner lead to transmit 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 data signal.Data signal after conversion is transferred to bottom CAN transceiver 35 by bottom main control chip 32,
CAN signal is converted to, is then transmitted to host computer data acquisition circuit plate 8 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 whole circuit system.In host computer data
On collecting circuit board 8, under the control of host computer main control chip 37, the CAN signal of the transmission of coaxial cable 11 connects by upper strata CAN
Transceiver 38 is received, and is then transmit to CAN serial converters 40 and is converted to usb signal, is passed eventually through input and output serial ports 39
In transporting to data acquisition computer 10.
The mode counted using existing rack-and-pinion or photoelectric encoder method is simple and reliable, and low cost, but
There is a problem of it is certain, rack-and-pinion or photoelectric encoder no matter can all be counted when hydraulic stem is moved up and down, this require by
The manually operated counter switch of being opened when hydraulic stem downward injection of operating personnel counts rack-and-pinion or photoelectric encoder,
And counter switch is closed when hydraulic stem is moved up makes rack-and-pinion or photoelectric encoder stop counting, this mode for 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 facilitate depth survey to fill
The replacing at any time put, the application directly separates depth encoder 9 with injection system, and its core component is that drawstring displacement is passed
Sensor.The displacement signal that depth encoder 9 sends is transmitted into upper owner control chip 37 by input and output serial ports 39, then
Transmit into 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 of displacement transducer extends, the not change of registered depth；And when the drawstring of displacement sensor for pull rope shortens, then record
The change of depth, finally realizes the full-automatic collection of depth.
Antifriction bar 6 slightly expands the diameter of penetration hole, can not influence what static point resistance and side friction power were measured
Under precondition, probe surrounding soil is reduced to the frictional force of feeler lever 7, passed through such that it is able 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 post 14 by the detachable power of leading ring 13, is avoided as much as causing side wall 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 is employed around deformation post in vertical
To, the arrangement mode that is distributed of transverse direction, vertical and horizontal, interfering between small strain piece signal can be resisted, improve cone
Resistance and the stability and accuracy of 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 the 3rd waterproof grommet 23 prevent underground water from entering in probe
Portion, it is to avoid circuit is short-circuited.Anti- native 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.
Bottom micro power conditioner 25 is provided with bottom collection plate 24, two power 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 power, it is to avoid the current interference between different elements, carries
The stability of measurement result high.There is provided dipmeter 30, realizes the measurement at probe angle of inclination in underground injection, it is used for
The measurement result of depth of penetration is corrected, while being easy to the penetration process that control is popped one's head in, it is to avoid inclination is excessive to cause the folding of feeler lever 7
It is disconnected.Temperature sensor 31 built-in on bottom collection plate 24 realizes the measurement of probe temperature, for temperature-compensating, improves test knot
The accuracy of fruit.Bottom CAN transceiver 35, host computer main control chip 37 and upper strata CAN transceiver 38 turn data signal
CAN signal is changed to be transmitted and encode, it is advantageous that：On the one hand, CAN transmission technology allows to check signal
With the function of reporting an error such that it is able to which the measurement signal to mistake is identified；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 system of the invention
Reliability can be significantly improved.
Static point resistance is independently measured by static point resistance electric bridge 15 and obtained, and injection drag overall passes through static point resistance electric bridge 15
Obtained with the combined measurement of injection drag overall electric bridge 16.The resistance that note nose cone 1 is subject to is F1, nose cone bottom cross-sectional area is A1；
The drag overall that sidewall friction cylinder 3 is subject to nose cone 1 is F2, the surface area of sidewall friction cylinder 3 is A2.Then sidewall friction cylinder 3 is subject to
Power be F2–F1, static point resistance qcWith side friction power fsObtain as follows respectively：
When needing to carry out seismic wave test in certain depth, paused in specified depth, 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.The distance between two three-component geophones of note are L, and the time signal difference for detecting is t, then be the depth of L in length
In degree interval, the shear wave velocity of 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
Method make use of real depth spacing and time interval, therefore the shear wave velocity for measuring is more accurate.And due to being smaller than apart from L
1m, measurement result is finer.This two three-component geophones can be equally used in the pseudo-time partitioning method of lower opening method, make
With more flexible and convenient.
The present invention to the probe and data collecting system of domestic and international hole pressure touching methods test system comprehensively change
Enter, rationally devise the structure and measuring principle of probe, internal circuitry is improved so that static sounding technology energy
More accurately, stablize, reliably and comprehensively serve Geotechnical Engineering field.
Claims (17)
1. a kind of multifunction digital seismic wave hole pressure touching methods test system, 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)；
Through antifriction bar (6), feeler lever (7), its one end switches through two power lines and two letters in extension bar (5) to coaxial cable (11)
Number line, the other end connects 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 is set, and pore pressure passage (12) is provided with the nose cone (1), and the bottom in sidewall friction cylinder (3) is provided with detachable
Power ring (13) is led, deformation post (14) is provided with above the detachable power of leading ring (13), deformation post (14) is provided with first
Aperture (18), second orifice (19), static point resistance electric bridge (15), injection drag overall electric bridge are provided with the outside of deformation post (14)
(16), the bottom of deformation post (14) is provided with sensor for pore water pressure (17)；Bottom collection plate (24) is provided with inside the adapting rod (5).
2. a kind of multifunction digital seismic wave hole pressure touching methods test system according to claim 1, its feature exists
In：Bottom micro power conditioner (25), static point resistance independent power source (26), injection are provided with described bottom collection plate (24) total
Resistance 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) and
Two three-component geophones (36).
3. a kind of multifunction digital seismic wave hole pressure touching methods test system according to claim 1, its feature exists
In：Described host computer data acquisition circuit plate (8) contain host computer main control chip (37), upper strata CAN transceiver (38),
CAN serial converters (40), upper strata micro power conditioner (41) and input and output serial ports (39).
4. a kind of multifunction digital seismic wave hole pressure touching methods test system according to claim 1, its feature exists
In：The cone angle of described nose cone (1) is 60 °, and cone basal cross section product is 10cm2；Sidewall friction cylinder (3) surface area is 150cm2。
5. a kind of multifunction digital seismic wave hole pressure touching methods test system according to claim 1, its feature exists
In：Described pore pressure filter ring (2) thickness is 5mm.
6. a kind of multifunction digital seismic wave hole pressure touching methods test system according to claim 1, its feature exists
In：Described static point resistance electric bridge (15) is by the four small strain pieces and its connecting wire group around cylindrical center's axle equidistantly distributed
Into, and four small strain pieces arrangement mode be followed successively by longitudinally, laterally, vertical and horizontal.
7. a kind of multifunction digital seismic wave hole pressure touching methods test system according to claim 1, its feature exists
In：Described injection drag overall electric bridge (16) is by the four small strain pieces and its connecting wire around cylindrical center's axle equidistantly distributed
Composition, and four small strain pieces arrangement mode be followed successively by longitudinally, laterally, vertical and horizontal.
8. a kind of multifunction digital seismic wave hole pressure touching methods test system according to claim 1, its feature exists
In：Described coaxial cable (11) is four cores, including two power lines and two signal lines, two power 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).
9. a kind of multifunction digital seismic wave hole pressure touching methods test system according to claim 8, its feature exists
In：Described 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).
10. a kind of multifunction digital seismic wave hole pressure touching methods test system according to claim 8, its feature exists
In：Two signal lines of described 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.
A kind of 11. multifunction digital seismic wave hole pressure touching methods test systems according to claim 2, its feature exists
In：Described signal conditioning circuit element (34) input 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.
A kind of 12. multifunction digital seismic wave hole pressure touching methods test systems according to claim 1, its feature exists
In：Described antifriction bar (6) initial and end two ends cross-sectional area is 10cm2, and wherein cross section product is greater than 10cm2。
A kind of 13. multifunction digital seismic wave hole pressure touching methods test systems according to claim 3, its feature exists
In：Described input and output serial ports (39) has four, wherein first by upper strata micro power conditioner (41) and external power supply
It is connected, second is connected depth encoder (9) with host computer main control chip (37), the 3rd by serial converter (40) sum
It is connected according to collecting computer (10), with upper strata CAN transceiver (38) be connected coaxial cable (11) by last.
A kind of 14. multifunction digital seismic wave hole pressure touching methods test systems according to claim 3, its feature exists
In：Described host computer main control chip (37) respectively with upper strata micro power conditioner (41), serial converter (40) and upper strata
CAN transceiver (38) is connected.
A kind of 15. new multi-functional Digital formula seismic wave hole pressure touching methods test systems according to claim 2, it is special
Levy and be：The distance between described the first three-component geophone (29) and the second three-component geophone (36) be 0.2m extremely
0.8m。
A kind of 16. multifunction digital seismic wave hole pressure touching methods test systems according to claim 1, its feature exists
In：Described depth encoder (9) uses displacement sensor for pull rope.
A kind of 17. multifunction digital seismic wave hole pressure touching methods test systems according to claim 1, its feature exists
In：Described the first waterproof grommet (20), the detachable power of the leading ring (13) is provided with the second waterproof grommet (21), institute
State and be provided with anti-native sealing ring (22) between sidewall friction cylinder (3) and adapter (4), the adapter (4) is connected with adapting rod (5)
Place is provided with the 3rd waterproof grommet (23).
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| 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 |
| CN107882011A (en) * | 2017-11-29 | 2018-04-06 | 东南大学 | A kind of miniature probe with temperature compensation function |
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| 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 |
| CN114277757A (en) * | 2021-12-17 | 2022-04-05 | 中国计量大学 | Mechanical structure of multi-variable ring column hole pressure static sounding probe for one-rod measurement of soft and hard soil layers |
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| 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 |
| CN114277757A (en) * | 2021-12-17 | 2022-04-05 | 中国计量大学 | Mechanical structure of multi-variable ring column hole pressure static sounding probe for one-rod measurement of soft and hard soil layers |
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