CN101852862A - Joint probe and corresponding seismic module used for measuring static and dynamic properties of soil - Google Patents
Joint probe and corresponding seismic module used for measuring static and dynamic properties of soil Download PDFInfo
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- CN101852862A CN101852862A CN200910130795A CN200910130795A CN101852862A CN 101852862 A CN101852862 A CN 101852862A CN 200910130795 A CN200910130795 A CN 200910130795A CN 200910130795 A CN200910130795 A CN 200910130795A CN 101852862 A CN101852862 A CN 101852862A
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Abstract
The invention relates to a joint probe and a corresponding seismic module used for measuring static and dynamic properties of soil. The joint probe comprises a dilatometer probe, a gas duct, a conducting wire and the seismic module, wherein the gas duct is connected with the dilatometer probe and is used for providing a gas connection between the dilatometer probe and an external gas source; the conducting wire is positioned in the gas duct and is used for providing an electric connection between the dilatometer and an external circuit; and the seismic module is connected to a conducting wire which is positioned in the gas duct and is used for providing an electric connection between the seismic module the external circuit. The joint probe solves the problems of a plurality of conducting wires and an antenna effect.
Description
Technical field
The disclosure relates to the associating earthquake probe and the corresponding seismic module of the quiet dynamic characteristic measuring that is used for soil.
Background technology
United States Patent (USP) the 4th, 043 discloses a kind of so-called expand known probe 1 of instrument of flat chisel side that is for No. 186, and this probe 1 is used in site measurement soil horizon deformation modulus.This probe 1 shown in Fig. 1 comprises dilatometer shovel 2, this dilatometer shovels 2 inside and has the pressure chamber, this pressure chamber is via circular expandable steel membrane 3 sealed opening and external communications by approaching, steel membrane is concordant to be installed on the face of shovel (perhaps be equipped with two films, each face of shovel has one).Make probe force vertically to enter in the soil by the push rod 4 that is connected above the shovel 2.Dilatometer shovel 2 also comprises the electric contact as the motion of the described metal film of response.Shovel 2 is connected to the face of land by the gas conduit 5,6 that inside is connected to lead, and the gas conduit 5,6 that inside is connected to lead comprises the gas conduit 5 that contains solid conductor 6, and for example plastic tube extends in push rod 4 inside.Gas conduit 5 is connected to external circuit at soil surface, and external circuit comprises and is used for that pressure gas is directed to chamber dilatometer shovel 2 or from the unit that chamber dilatometer shovel 2 is discharged, and solid conductor 6 allows from shoveling 2 electrical connections to external circuit.Shovel 2 stops at the selected degree of depth and film 3 is expanded by the gaseous tension that is fed into shovel 2.In each degree of depth, the user is determined as the pressure P o of the pressure that causes that film begins to rise, and is determined as the pressure P 1 of pressure of the scheduled volume of the off-centring that film is produced be generally 1.1mm then.The moment that must obtain Po and P1 by the circuit determined by the position of the film of as common electric switch, working open or closure is come signalisation.The lead of the two poles of the earth of switch by the energising of gas conduit inside is connected to the face of land and electrical ground, i.e. push rod.On the face of land, battery and hummer (when closing of circuit, sounding) make circuit perfect.Two pressure P o and P1 are explained subsequently with the derivation soil parameters.
In nearly decades, the bloated instrument probe of known flat chisel side is used more and more.Yet the flat chisel side instrument that expands is only measured static soil parameters, and now, also exists to seismologic parameter, specifically to shear wave velocity Vs and to the interest that increases gradually of initial shear modulus Go (deriving from Vs).
Can obtain to be used to measure the whole bag of tricks that Vs distributes at present.In these methods, often the method for using is striden hole and down-the-hole method for what implement in special special use boring of making.Yet these methods need extra place operation, therefore with only compare from the situation that obtains static parameter and seismologic parameter of once surveying of utilizing same probe, and total cost and time are higher basically.
Why Here it is passes by the research (Hepton " Shear Wave VelocityMeasurements during Penetration Testing " that implements, Proc.Penetration Testing in theUK, ICE1988, pages 275-278 and G.Martin and P.Mayne " Seismic FlatDilatometer Tests in Piedmont Residual Soils " Geotechnical SiteCharacterization 1998 Balkerna Rotterdam) make great efforts to efforts be made so that expand instrument and being used for of flat chisel side obtains the reason that the seismic module of static parameter and seismologic parameter combines simultaneously.
Fig. 2 shows the known experiment combined probe that is equipped with seismic module 7.Seismic module 7 comprises the top tube element 4a that is connected dilatometer shovel 2, for example steel pipe.In the inside of this tube element 4a, typical case interval 0.5m or 1m are provided with two receivers 8,9, for example seismoreceiver or accelerometer.
Each receiver 8,9 is connected to the face of land by lead 10,11 separately.In these leads 10,11 each is parallel to gas conduit 5,6 extensions that inside is connected to lead in push rod 4 inside. Gas conduit 5,6 and ripple shake figure lead 10,11 that inside is connected to lead all arrive the face of land and are connected to external circuit.
Make by seismic module 7 and dilatometer shovel 2 combined probes that form 12 by the push rod 4 above the tube element 4a that is connected seismic module 7 and to force to enter soil vertically.Probe 12 stops at the degree of depth of wanting, and the operator can the static soil parameters measurement of aforesaid execution maybe can carry out the Vs measurement.
Must implement the degree of depth that Vs measures, probe 12 stops and producing seismic event W on the face of land by frequent source of knocking the pendulum hammer of parallelepipedon anvil for level.Seismic event W propagates downwards and at first arrives top receiver 8, arrives bottom receiver 9 then.Delay between the first ripple shake figure and the second ripple shake figure utilizes known cross correlation algorithm to measure usually.
In case known delay, obtained shear wave velocity Vs as the difference and the ratio between the described delay of the distance between the source on the face of land that calculates easily and two receivers.Vs subsequently can be by utilizing elasticity formula Go=ρ Vs
2Principle convert initial soil shear modulus Go to.
When joint probe 12 was used for static measurement, the flat chisel side expanded that instrument is worked as previously mentioned and is connected to the face of land by the gas conduit 5,6 that its inside is connected to lead.
Such joint probe 12 has produced interesting result of study.The result of study of Huo Deing has become the starting point of research of die-away curve that purpose is to be used to define in conjunction with low stress modulus of shearing (from seismic test) and work modulus (from the flat chisel side instrument that expands) relation of modulus and stress specifically, and described curve is necessary for the nonlinear analysis that execution soil is out of shape under load.
Yet the known joint probe 12 that uses for industrialization in the soil investigation field has many serious substantial defectives.
Inconvenient part is to have played the effect of antenna and assemble because the electrical interference of transportation, motor, electric wire, connection or the like with the lead 10,11 that analog form is transmitted ripple shake figure.This inconvenient part is especially serious at big degree of depth place, there since away from a little less than the energy source ripple shake figure and electrical noise can hinder signal on lead 10,11, to transmit.
More serious substantial inconvenient part is the existence of a plurality of cables.Surpassing the existence of a cable, specifically is that inside is connected to the gas conduit 5,6 of lead and any one existence in the lead 10,11, makes the on-the-spot very complexity that detects, and this is well-known for experienced operator.Cable 5,6,10,11 must run through the inside of push rod 4 and often be operated.Obscure and mix the risk height of two (or more a plurality of) cables, cause moving rather slowly and quite high total cost.
In the situation of the further investigation in the soil, several cables 5,6,10,11 must connect in turn to obtain necessary length.Become a lot of and a plurality of pneumatic joints and electronic joint of joint is very complicated and huge.
In the special case of the very important coastal waters research for industry, the use of multifarious lead or cable is in fact impossible.In fact, in many offshore structures, being connected to the dilatometer shovel 2 that inside is connected to the gas conduit 5,6 of lead hangs by rope, utilize single cable or conduit more difficult, this is because the dilatometer shovel 2 that hangs can rotate, therefore the gas conduit 5,6 that makes inside be connected to lead twists, and rope and the inner gas conduit 5,6 that is connected to lead must vertically be free to slide independently of each other, so that dilatometer shovel 2 inserts in the soil in seabed.Well known fact is in many situations, the problem puzzlement that the operator is caused by the existence by lead.
Embodiment disclosed by the invention has solved the problem that overcomes these inconvenient parts, specifically is the problem of multiple conducting wires and antenna effect advantageously.
Summary of the invention
This is in and discloses a kind of joint probe among first embodiment, comprising: the dilatometer probe; Gas conduit, described gas conduit are connected to the dilatometer probe and are used for providing between dilatometer probe and extraneous gas source gas to connect; Lead, described lead are used for providing electrical connection in gas conduit between dilatometer probe and external circuit; And seismic module, described seismic module is connected in gas conduit so that the lead of electrical connection to be provided between seismic module and external circuit.
Disclose a kind of seismic module herein in another embodiment, having comprised: tube element; Gas conduit, described gas conduit is arranged in tube element; And lead, to provide electrical connection between seismic module and external circuit, wherein, lead and gas conduit are suitable for being used to be connected to the dilatometer probe to described lead in gas conduit.
Description of drawings
When associating during accompanying drawing, by the reference following detailed description, to the more complete understanding of feature and many attendant advantages with easy to understand, wherein:
Fig. 1 shows the synoptic diagram according to the dilatometer probe of prior art;
Fig. 1 a shows the diagrammatic side view of the dilatometer probe of Fig. 1, and wherein film is in unexpansive position;
Fig. 1 b shows the diagrammatic side view of the dilatometer probe of Fig. 1, and wherein film is in expanding position;
Fig. 2 shows the synoptic diagram according to the joint probe of prior art;
Fig. 3 shows the synoptic diagram according to joint probe disclosed by the invention;
Fig. 4 shows the synoptic diagram according to the embodiment of the seismic module of joint probe disclosed by the invention.
Embodiment
With reference now to accompanying drawing,, same Reference numeral is represented identical or corresponding part in wherein whole a few width of cloth accompanying drawings, specifically with reference to figure 3, joint probe 130 comprises dilatometer probe 20, dilatometer probe 20 inside have the pressure chamber, by film 30 sealed opening and external communications, gas can infeed and move to cause film in the discharge pressure chamber via at least one in the pressure chamber.For instance, gas can be air or nitrogen.
In one embodiment, transmitter 110 be connected to lead 60 with the outside switching signal of seismic module 70.
Utilize joint probe 130, implement the static measurement of the soil parameters utilize dilatometer probe 20 and be used to come from earthquake element of transducer 80,90 signal soil parameters dynamic/seismic surveying all is possible.
Specifically, dilatometer probe 20 and seismic module 70 all use the inner gas conduit (50,60) that is connected to lead with the outside exchange message of joint probe 130.
Advantageously, unique between dilatometer probe 20 or seismic module 70 and the external circuit is connected the gas conduit (50,60) that is connected to lead by inside and forms, therefore, and the problem that causes by the existence of a plurality of cables in avoiding operating at the scene.
In order to obtain the more detailed kinetic measurement of soil parameters, the second earthquake element of transducer 80,90 can be set in seismic module 70.Earthquake element of transducer 80,90 is the typically at interval receiver of 0.5m or 1m, for example seismoreceiver or accelerometer.
Advantageously, make seismic module 70 and dilatometer probe 20 force to enter soil vertically by the push rod 40 that is connected above the rigid tubular element 41.
In one embodiment, electron plate 100 also comprises:
-receiver, described receiver receipt source be in the signal of earthquake element of transducer, and
-analog/digital converter, described analog/digital converter are used for and will come from the simulating signal amplification of earthquake element of transducer 80,90 and be transformed into digital signal.
Among the embodiment shown in Figure 3, transmitter 110 is contactless and comprises the magnetic head that for example has C shape profile that wherein, the gas conduit (50,60) that inside is connected to lead extends between the free arm of magnetic head.
In another embodiment shown in Fig. 4, transmitter 110 comprises lead 111, and lead 111 has first end that is electrically connected to electron plate 100, second end that is electrically connected to lead 60.Second end of lead 111 is arranged in pneumatic adapter 112, pneumatic adapter 112 and inner gas conduit (50, the 60) seal closure that is connected to lead.Therefore, the connection between lead 111 and the lead 60 is sealed in pneumatic adapter 112 inside, flows in gas conduit (50,60) to allow pressure gas.
In other words, second end passes pneumatic adapter and enters and make the compressed gas physical efficiency flow freely in inside is connected to the gas conduit (50,60) of lead in the gas conduit that inside is connected to lead.Afterwards, conductor 111 is connected in the lead that is arranged in gas conduit 50.
Advantageously, the end that is connected to the gas conduit (50,60) of lead in the inside of seismic module 70 is provided with hermetic connector 120, reaches the connection of the gas conduit (50,60) that further is connected to lead to the inside of dilatometer probe 20 to allow dilatometer probe 20.
Equally advantageously, seismic module 70 can comprise seismoreceiver, accelerometer, inclinometer, video camera, pressure transducer, vision sensor, the chemical probe that is connected to electron plate.Electron plate 100 can also be formed by acquiring unit and processor.
For example comprise at those seismic modules 70 shown in Fig. 3 and 4:
-earthquake element of transducer 80,90,
-acquiring unit and processor 100, this acquiring unit and processor 100 are used to derive from the signal of earthquake element of transducer, and
-transmitter 110, this transmitter 110 is connected to acquiring unit and processor 100.
In seismic module 70, transmitter 110 is connected to lead 60 to allow between acquiring unit and processor and seismic module outside switching telecommunication number.
For example, joint probe 130 is operated in the following manner.The output of receiver 80,90 is not the face of land that is sent straight to as in the prior art, but is sent to the electron plate 100 of seismic module 70 inside.Electron plate 100 is handled described signal, and for example electron plate 100 amplifies described signal and makes described signal digitalized.Then, not to utilize additive wire to pass the signal along to the face of land, but digitized signal is sent to the face of land via dilatometer probe 20 employed inner leads 60.Digitized signal is postponed with definite by face of land unit decodes and analysis, calculates shear wave velocity thus.
Advantageously, if signal with analog in form by lead directly from the sensor passes to the face of land, the digitizing at degree of depth place avoided may undesired signal antenna effect.
Because two tests carry out constantly in difference, the dual use that inner lead 60 is used for static and seismic surveying selectively starts the dilatometer probe or seismic module is possible.The use of the instrument of joint probe 130 feasible associatings is simple economy more.
Advantageously, joint probe 130 can utilize gas conduit (50,60) that identical inside is connected to lead as the dilatometer probe, and this arrangement has many advantages.The user of the bloated instrument probe of flat chisel side needn't obtain extra cable and the fabricator needn't make and store dissimilar cables and joint (also useful from ecological angle).
Advantageously, utilize joint probe 130, detected signal can be via the 60 numerical digit transmission of identical inner lead, even these signals are produced by other sensor that is included in the seismic module 70.
If seismic module 70 is removable, the existence of having only an inside to be connected to the gas conduit of lead (50,60) allows to dismantle very apace joint probe 130.Therefore, iff carrying out static measurement, the dilatometer probe can be separated apace with seismic module, and the dilatometer probe is used in the common non-seismic model.
The modularization of combined probe means, wish also to carry out seismic surveying for example at United States Patent (USP) 4, the expand owner of instrument probe of flat chisel side described in 043,186 does not need new probe fully, only needs additional seismic module 70 disclosed by the invention with their the flat chisel side of the upgrading instrument probe that expands.
Claims (29)
1. joint probe comprises:
The dilatometer probe;
Gas conduit, described gas conduit are connected to described dilatometer probe, are used for providing between described dilatometer probe and extraneous gas source gas to connect;
Lead, described lead is arranged in described gas conduit, and being used for provides electrical connection between described dilatometer probe and external circuit; And
Seismic module, described seismic module are connected to the described lead that is arranged in described gas conduit, to provide electrical connection between described seismic module and described external circuit.
2. joint probe according to claim 1, wherein, described dilatometer probe further comprises:
The pressure chamber, described pressure chamber is positioned at the inside of described dilatometer probe, and described pressure chamber is via at least one opening and the external communications of tunicle sealing; And
Wherein the gas that provides via described gas conduit is that pressure gas is so that described film moves.
3. joint probe according to claim 1, wherein, described seismic module further comprises:
At least one earthquake element of transducer;
Acquiring unit, described acquiring unit are connected to described earthquake element of transducer, are used for obtaining signal from described earthquake element of transducer; And
Processor, described processor is connected to described acquiring unit, is used to handle the signal that obtains from described earthquake element of transducer.
4. joint probe according to claim 1, wherein, described seismic module further comprises:
Transmitter, described transmitter are connected to described seismic module and described lead, are used between described seismic module and described external circuit switching telecommunication number.
5. joint probe according to claim 1, wherein, the described lead that is arranged in described gas conduit is a solid conductor.
6. joint probe according to claim 1, wherein, described gas conduit is positioned at the tube element that is provided with described seismic module.
7. joint probe according to claim 3, wherein, described gas conduit is positioned at the tube element that is provided with described earthquake element of transducer, described acquiring unit and described processor.
8. joint probe according to claim 3, wherein, described acquiring unit and described processor are on electron plate.
9. joint probe according to claim 3, wherein, described acquiring unit comprises:
Receiver, described receiver receipt source is in the simulating signal of described earthquake element of transducer; And
Analog/digital converter, described analog/digital converter are used for the described simulating signal amplification that comes from described earthquake element of transducer and are transformed into digital signal.
10. joint probe according to claim 4 wherein, is connected to the described transmitter that described lead is used between described seismic module and described external circuit switching telecommunication number and comprises that noncontact is electrically connected.
11. joint probe according to claim 10, wherein, described noncontact is electrically connected and comprises magnetic head.
12. joint probe according to claim 11, wherein:
Described magnetic head has the C shape profile that has two free arms; And
Described gas conduit extends between the described free arm of described magnetic head.
13. joint probe according to claim 4, wherein, described transmitter comprises:
First end, described first end is electrically coupled to described seismic module; And
Second end, described second end is electrically coupled to the described lead that is arranged in described gas conduit;
Wherein, described second end enters described gas conduit by pneumatic adapter, and described pneumatic adapter is sealed so that gas can freely flow to described dilatometer probe in described gas conduit.
14. joint probe according to claim 1, wherein, described seismic module comprises seismoreceiver, accelerometer, inclinometer, video camera, pressure transducer, vision sensor and chemical probe.
15. joint probe according to claim 1, wherein:
Described lead is the unique electrical connection between described seismic module and the described external circuit; And
Described lead is the unique electrical connection between described dilatometer probe and the described external circuit.
16. a seismic module comprises:
Tube element;
Be positioned at the gas conduit of described tube element; And
Lead, described lead is arranged in described gas conduit, to provide electrical connection between described seismic module and external circuit;
Wherein, described lead and described gas conduit are suitable for being connected to the dilatometer probe.
17. seismic module according to claim 16 further comprises:
Be arranged at least one earthquake element of transducer of described tube element;
Acquiring unit, described acquiring unit are connected to described earthquake element of transducer, be used for obtaining signal from described earthquake element of transducer, and described acquiring unit are arranged in described tube element; And
Processor, described processor is connected to described acquiring unit, be used to handle the signal that obtains from described earthquake element of transducer, and described processor is arranged in described tube element.
18. seismic module according to claim 16 further comprises:
Transmitter, described transmitter are connected to described seismic module and described lead, are used between described seismic module and described external circuit switching telecommunication number.
19. seismic module according to claim 16, wherein, the described lead that is arranged in described gas conduit is a solid conductor.
20. seismic module according to claim 17, wherein, described acquiring unit and described processor are on electron plate.
21. seismic module according to claim 17, wherein, described acquiring unit comprises:
Receiver, described receiver receipt source is in the simulating signal of described earthquake element of transducer; And
Analog/digital converter, described analog/digital converter are used for the described simulating signal amplification that comes from described earthquake element of transducer and are transformed into digital signal.
22. seismic module according to claim 18 wherein, is connected to the described transmitter that described lead is used between described seismic module and described external circuit switching telecommunication number and comprises that noncontact is electrically connected.
23. seismic module according to claim 22, wherein, described noncontact is electrically connected and comprises magnetic head.
24. seismic module according to claim 23, wherein:
Described magnetic head has the C shape profile that has two free arms; And
Described gas conduit extends between the described free arm of described magnetic head.
25. seismic module according to claim 18, wherein, described transmitter comprises:
First end, described first end is electrically coupled to described seismic module; And
Second end, described second end is electrically coupled to the described lead that is arranged in described gas conduit;
Wherein, described second end enters described gas conduit by pneumatic adapter, and described pneumatic adapter is sealed so that gas can freely flow to the dilatometer probe that is connected to described seismic module in described gas conduit.
26. seismic module according to claim 16, wherein, described seismic module comprises seismoreceiver, accelerometer, inclinometer, video camera, pressure transducer, vision sensor and chemical probe.
27. seismic module according to claim 16, wherein:
Described lead is the unique electrical connection between described seismic module and the described external circuit; And
Described lead is the unique electrical connection between described external circuit and the dilatometer probe that is connected to described seismic module.
28. seismic module according to claim 16, wherein:
The described gas conduit that inside is connected to lead is the unique connection between described seismic module and the described external circuit; And
The described gas conduit that inside is connected to lead is the unique connection between described external circuit and the dilatometer probe that is connected to described seismic module.
29. joint probe according to claim 1, wherein:
The described gas conduit that inside is connected to lead is the unique connection between described seismic module and the described external circuit; And
The described gas conduit that inside is connected to lead is the unique connection between described dilatometer probe and the described external circuit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910130795A CN101852862A (en) | 2009-03-30 | 2009-03-30 | Joint probe and corresponding seismic module used for measuring static and dynamic properties of soil |
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| CN200910130795A CN101852862A (en) | 2009-03-30 | 2009-03-30 | Joint probe and corresponding seismic module used for measuring static and dynamic properties of soil |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102788870A (en) * | 2012-07-31 | 2012-11-21 | 中铁隧道集团有限公司 | In-situ test method used in soft soil wall rock tunnel |
| CN106525596A (en) * | 2016-11-04 | 2017-03-22 | 东南大学 | Indoor testing device for reaction coefficients of lateral foundation bed under different stress paths |
| CN106592564A (en) * | 2016-09-20 | 2017-04-26 | 中国电力科学研究院 | Soil mass layered settlement magnet ring and soil mass layered settlement monitoring device |
| CN108981797A (en) * | 2017-06-05 | 2018-12-11 | 威创私人有限公司 | Monitoring device and method |
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2009
- 2009-03-30 CN CN200910130795A patent/CN101852862A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102788870A (en) * | 2012-07-31 | 2012-11-21 | 中铁隧道集团有限公司 | In-situ test method used in soft soil wall rock tunnel |
| CN102788870B (en) * | 2012-07-31 | 2015-03-25 | 中铁隧道集团有限公司 | In-situ test method used in soft soil wall rock tunnel |
| CN106592564A (en) * | 2016-09-20 | 2017-04-26 | 中国电力科学研究院 | Soil mass layered settlement magnet ring and soil mass layered settlement monitoring device |
| CN106592564B (en) * | 2016-09-20 | 2019-09-17 | 中国电力科学研究院 | Soil body layering settlement magnetic ring and soil body deep soil settlement survey device |
| CN106525596A (en) * | 2016-11-04 | 2017-03-22 | 东南大学 | Indoor testing device for reaction coefficients of lateral foundation bed under different stress paths |
| CN106525596B (en) * | 2016-11-04 | 2019-06-21 | 东南大学 | Lateral bedding counter-force coefficient indoor test device under different stress paths |
| CN108981797A (en) * | 2017-06-05 | 2018-12-11 | 威创私人有限公司 | Monitoring device and method |
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Application publication date: 20101006 |