CN207215662U - A kind of servo-controlled rock fracture shearing seepage tests sealing device - Google Patents
A kind of servo-controlled rock fracture shearing seepage tests sealing device Download PDFInfo
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- CN207215662U CN207215662U CN201720897103.1U CN201720897103U CN207215662U CN 207215662 U CN207215662 U CN 207215662U CN 201720897103 U CN201720897103 U CN 201720897103U CN 207215662 U CN207215662 U CN 207215662U
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Abstract
A kind of servo-controlled rock fracture shearing seepage tests sealing device, including for shearing the shear of rock fracture test specimen and seepage apparatus for controlling flow of fluid, shear includes normal direction increased pressure board, upper shear box, down cut box, base, upper holder block and lower lock block, the experiment station that rock fracture test specimen is fixed between shear box and down cut box, upper shear box top connects normal direction increased pressure board, down cut box connect base, upper holder block is located at the bottom both sides of upper shear box respectively, lower lock block is located at the top both sides of down cut box respectively, upper holder block is located at the surface of lower lock block；Sealing device also includes the vertical sealing device, the transverse sealing device for sealing the crack end parallel with shear direction and the servo-control system for controlling oil pressure for being used to seal the crack end vertical with shear direction.The utility model provides a kind of sealing stabilization, shear history the continuous servo-controlled sealing device for rock fracture shearing seepage tests.
Description
Technical field
The utility model belongs to rock mechanics field, the sealing device being related in a kind of rock fracture shearing seepage tests,
More particularly to it is a kind of under SERVO CONTROL, can continuous shear stress, consider that rock cuts the seepage flow sealing device of the rock genuine property such as swollen.
Background technology
The shear-seepage characteristic of rock fracture is either in some Serious geological disasters, such as landslide, earthquake, still
In some Large Underground rock mass engineering projects, such as nuclear waste disposal, oil mining, all with important Research Significance.
Labs can help us to be fully understood from crack in waterpower on the experimental study of rock fracture shear-seepage characteristic
Various actions under coupling, and the support of basic data is provided for practical engineering application.
The shear-seepage characteristic on rock fracture has carried out lot of experiments research at present, when wherein seepage flow is tested
Sealing problem is always a technological difficulties for perplexing academia, and the problem of especially being sealed when entering horizontal high voltage seepage tests shows
Obtain especially prominent.Not only tangential when this is primarily due to crack shearing, in normal direction also due to cutting swollen effect occurs big
Deformation, so that traditional sealing mechanism that adjustment is not tracked with shear history fails.Meanwhile most of experimental rigs without
Method tests the seepage characteristic of rock fracture in the case of continuous shear stress.
The content of the invention
Unstable, the discontinuous problem of shear history, this practicality are sealed in existing rock shearing-seepage tests in order to overcome
New offer is a kind of to seal stable, the continuous servo-controlled sealing dress for rock fracture shearing seepage tests of shear history
Put, the precision of test and control is improved by servo-control system, being directed to exploitation one kind has more high sealing performance, can be with
As seal pressure is voluntarily corrected in crack deformation, and the sealing device of seepage flow can be tested under continuous shear stress.
Technical scheme is used by the utility model solves its technical problem：
A kind of servo-controlled rock fracture shearing seepage tests sealing device, including for shearing rock fracture test specimen
Shear and the seepage apparatus for controlling flow of fluid, the shear include normal direction increased pressure board, upper shear box, under cut
Cut box, base, upper holder block and lower lock block, the experiment work that rock fracture test specimen is fixed between the upper shear box and down cut box
Position, the upper shear box top connection normal direction increased pressure board, the down cut box connect base, upper holder block are located at upper shear box respectively
Bottom both sides, lower lock block is located at the top both sides of down cut box respectively, and the upper holder block is located at the surface of lower lock block；It is described
Sealing device also includes the vertical sealing device at the crack end vertical with shear direction for sealing, for sealing and shear direction
The transverse sealing device at parallel crack end and the servo-control system for controlling oil pressure；
The vertical sealing device includes vertical oil gear and vertical Rubber end in lower lock block, the vertical oil pressure dress
The pistons end put connects vertical Rubber end, and the vertical Rubber end coordinates with the upper holder block realizes sealing；
The transverse sealing device includes horizontal oil gear and the transverse rubber head positioned at base both sides；The laterally oil
The pistons end connection transverse rubber head of pressure device, the transverse rubber head coordinates with test specimen both sides fissure-plane realizes sealing.
Further, the vertical sealing device also includes the teflon coatings under upper holder block and vertical Rubber end, described
Vertical Rubber end coordinates with the teflon coatings realizes sealing；
Described transverse sealing device also includes the Teflon piece and transverse rubber head being additional on the fissure-plane of test specimen both sides,
The transverse rubber head coordinates with Teflon piece realizes sealing.
Further, the vertical oil gear is by vertical oil cylinder, vertical piston, vertical oil inlet pipe and vertical flowline
Form, oil controls forward piston stroke, the pistons end connection of the vertical piston by the into and out vertical oil cylinder of vertical oil pipe
Vertical Rubber end；
The horizontal oil gear is made up of horizontal oil cylinder, horizontal piston, horizontal oil inlet pipe and horizontal flowline, and oil is logical
Cross the into and out horizontal oil cylinder control forward piston stroke of horizontal oil pipe；The pistons end connection transverse rubber of the horizontal piston
Head.
Further, the sealing device also includes servo-control system, and the servo-control system includes data processing
Device and servopump；The data processor receives and handled the data that the data measurin system transmits, and instruction is communicated to
The servopump controls in-oil cylinder oil pressure in the sealing device.
The sealing device also includes being used to measure displacement, load, oil pressure, the data measurin system of hydraulic pressure, the data
Measuring system includes displacement transducer, load transducer, oil pressure sensor, hydraulic pressure sensor；The number that the measuring system measures
Sealing control is realized according to servo-control system is transferred to.
The seepage apparatus includes outlet pipe, water inlet pipe, left side upper holder block pipeline, right side upper holder block pipeline and water valve；
The outlet pipe, water inlet pipe, left side upper holder block pipeline and right side upper holder block pipeline are arranged in briquetting, and are equipped with water valve
Regulate and control current.
The beneficial effects of the utility model are mainly manifested in：
1) fixed gap is left among upper lower lock block of the present utility model, is ensured in normal direction loading and shear history, method
Directly acted on to stress on test specimen, without acting on upper lower lock block；Meanwhile the water cavity that the space is formed can be seepage tests
Uniform hydraulic pressure is provided.
2) sealing device of the present utility model can according to the oil pressure of the size adjust automatically sealing device of hydraulic pressure in crack,
Ensure that oil pressure is more than hydraulic pressure, reach good sealing effectiveness.
3) longitudinal sealing device in the utility model, can be when crack cuts swollen from motion tracking by SERVO CONTROL
Normal direction (vertical) displacement of crack top test specimen, and promote piston to ensure enough seal pressures according to the algorithm of setting.
4) sealing device of the present utility model can adjust sealing by SERVO CONTROL in any time during experiment
Pressure, when that need not seal, caulking gum head can completely disengage, and not influence shear history.
5) Rubber end for being used to seal in the utility model directly contacts with teflon material, influence during sealing to shearing
It is smaller, continuous shear-seepage experiment can be achieved.
Brief description of the drawings
Elevation cross-sectional view when Fig. 1 is unsealing.
The elevation cross-sectional view after shear displacemant occurs when Fig. 2 is unsealing.
Fig. 3 is elevation cross-sectional view when seepage tests are carried out under certain shear displacemant.
Side cutaway view when Fig. 4 is unsealing.
Fig. 5 is side cutaway view when applying sealing.
Fig. 6 is servo-control system schematic diagram of the present utility model.
In Fig. 1-6,1- normal direction increased pressure boards；The upper shear boxs of 2-；3a- upper lefts briquetting；3b- upper right briquettings；3c- lower-lefts briquetting；
3d- bottom rights briquetting；Upper holder block pipeline on the left of 4a-；Upper holder block pipeline on the right side of 4b-；4c- oral siphons；4d- outlet pipes；On 5a- left sides
Water valve；Water supply valve on the right side of 5b-；Lower water valve on the left of 5c-；Lower water valve on the right side of 5d-；The vertical Rubber ends of 6a-；6b- transverse rubber heads；
7a- teflon coatings；7b- Teflon pieces；The left water cavities of 8a-；The right water cavities of 8b-；The vertical oil cylinders of 9a-；9b- vertical pistons；9c- is vertical
Flowline；The vertical oil inlet pipes of 9d-；10a- transverse direction oil cylinders；10b- horizontal pistons；10c- transverse direction flowlines；10d- transverse direction oil inlet pipes；
The vertical servopumps of 11a-；11b- transverse direction servopumps；12- down cut boxes；13- bases；14- displacement transducers；15- oil sources；16- numbers
According to processor；The vertical oil gears of 17a-；17b- transverse direction oil gears.
Embodiment
The utility model is further described below in conjunction with the accompanying drawings.
1~Fig. 6 of reference picture, a kind of servo-controlled rock fracture shearing seepage tests sealing device, including for shearing
The shear of rock fracture test specimen and the seepage apparatus for controlling flow of fluid, the shear pressurize including normal direction
Plate, upper shear box, down cut box, base, upper holder block and lower lock block, rock fracture test specimen is fixed on the upper shear box to be cut with
Cut the experiment station between box, the upper shear box top connection normal direction increased pressure board, the down cut box connect base, upper holder block
It is located at the bottom both sides of upper shear box respectively, lower lock block is located at the top both sides of down cut box respectively, under the upper holder block is located at
The surface of briquetting；Vertical sealing device that the sealing device also includes being used for sealing the crack end vertical with shear direction,
The transverse sealing device at the crack end parallel with shear direction for sealing and the servo-control system for controlling oil pressure；
The vertical sealing device includes vertical oil gear and vertical Rubber end in lower lock block, the vertical oil pressure dress
The pistons end put connects vertical Rubber end, and the vertical Rubber end coordinates with the upper holder block realizes sealing；
The transverse sealing device includes horizontal oil gear and the transverse rubber head positioned at base both sides；The laterally oil
The pistons end connection transverse rubber head of pressure device, the transverse rubber head coordinates with test specimen both sides fissure-plane realizes sealing.
Further, the vertical sealing device also includes the teflon coatings under upper holder block and vertical Rubber end, described
Vertical Rubber end coordinates with the teflon coatings realizes sealing；
Described transverse sealing device also includes the Teflon piece and transverse rubber head being additional on the fissure-plane of test specimen both sides,
The transverse rubber head coordinates with Teflon piece realizes sealing.
Further, the vertical oil gear is by vertical oil cylinder, vertical piston, vertical oil inlet pipe and vertical flowline
Form, oil controls forward piston stroke, the pistons end connection of the vertical piston by the into and out vertical oil cylinder of vertical oil pipe
Vertical Rubber end；
The horizontal oil gear is made up of horizontal oil cylinder, horizontal piston, horizontal oil inlet pipe and horizontal flowline, and oil is logical
Cross the into and out horizontal oil cylinder control forward piston stroke of horizontal oil pipe；The pistons end connection transverse rubber of the horizontal piston
Head.
Further, the sealing device also includes servo-control system, and the servo-control system includes data processing
Device and servopump；The data processor receives and handled the data that the data measurin system transmits, and instruction is communicated to
The servopump controls in-oil cylinder oil pressure in the sealing device.
The sealing device also includes being used to measure displacement, load, oil pressure, the data measurin system of hydraulic pressure, the data
Measuring system includes displacement transducer, load transducer, oil pressure sensor, hydraulic pressure sensor；The number that the measuring system measures
Sealing control is realized according to servo-control system is transferred to.
The seepage apparatus includes outlet pipe, water inlet pipe, left side upper holder block pipeline, right side upper holder block pipeline and water valve；
The outlet pipe, water inlet pipe, left side upper holder block pipeline and right side upper holder block pipeline are arranged in briquetting, and are equipped with water valve
Regulate and control current.
As Figure 1-3, the shear include normal direction increased pressure board 1, upper shear box 2, down cut box 12, base 13 with
And briquetting.Normal stress is applied to normal direction increased pressure board 1 by normal direction jack, the connection of the bottom of normal direction increased pressure board 1 loads test specimen
Upper shear box 2, normal direction increased pressure board 1 and upper shear box 2 can move along normal direction jointly, but can not tangentially transverse shifting；Under cut
Cut the bottom connect base 13 of box 12；Do not closed between two shear boxs, centre is left when certain space is used for seepage tests to splitting
Gap gateway applies uniform hydraulic pressure；4 briquettings, including upper left briquetting 3a, upper right briquetting 3b, lower-left are placed with shear box both sides
Briquetting 3c and bottom right briquetting 3d, lower lock block 3c applies cross shear and makes down cut box 12, the band of base 13 to the left in shear history
The lower half for test specimen produces shear displacemant.
The seepage apparatus is included in left side upper holder block pipeline 4a and left side water supply valve 5a, upper right pressure in the briquetting 3a of upper left
Under right side upper holder block pipeline 4b and right side water supply valve 5b in block 3b, the oral siphon 4c in the briquetting 3c of lower-left and left side water valve 5c with
And water valve 5d under outlet pipe 4d in the briquetting 3d of bottom right and right side；Water enters left water cavity 8a by oral siphon 4c, is split by rock
Clearance flow enters right water cavity 8b, finally from outlet pipe 4d bleeders；Between left side upper holder block pipeline 4a and right side upper holder block pipeline 4b
Difference gauge is connected, for measuring the hydraulic pressure between water in-out port, and by data transfer to data processor 16.
The vertical sealing device includes vertical oil gear 17a, teflon coatings 7a and vertical Rubber end 6a.It is described
Vertical oil gear includes vertical oil cylinder 9a, vertical piston 9b, vertical oil inlet pipe 9c and vertical flowline 9d；Vertical servopump
11a into and out of oil pipe by adjusting the oil pressure in vertical oil cylinder 9a to control vertical piston 9b process, and vertical piston 9b is in oil pressure
The vertical Rubber end 6a of the lower extruding of effect realizes the sealing to crack；Teflon coatings 7a under briquetting can reduce briquetting and vertical rubber
Frictional resistance between rubber head 6a.
As Figure 4-Figure 6, the transverse sealing device includes horizontal oil gear 17b, Teflon piece 7b and horizontal rubber
Rubber head 6b.It is fuel-displaced that the horizontal oil gear 17b includes horizontal oil cylinder 10a, horizontal piston 10b, horizontal oil inlet pipe 10c and transverse direction
Pipe 10d；Horizontal servopump 11b into and out of oil pipe by adjusting the oil pressure in horizontal oil cylinder 10a to control entering for horizontal piston 10b
Journey, the horizontal piston 10b extrudes transverse rubber head 6b and be closely affixed with rock fracture both sides under oil pressure effect reaches sealing
Effect；Teflon piece 7b between transverse rubber head 6b and rock fracture plays a part of to reduce frictional resistance.
The servo-control system, including data processor 16 and servopump 11a, 11b.The data processor 16 can
Receive the data of simultaneously processing data processing system transmission, and instruction is communicated to servopump, control sealing to fill by servopump
In-oil cylinder oil pressure in putting.
The data measurin system, including displacement transducer, load transducer, oil pressure sensor and hydraulic pressure sensor.
Institute's displacement sensors include Normal Displacement sensor 14 and tangential displacement sensor, can monitor the normal direction of test specimen and tangential position
Move；The load transducer includes Normal stress sensor and tangential displacement sensor, can monitor the normal direction acted on test specimen
And tangential stress；The oil pressure sensor can monitor the oil pressure in vertical sealing device and transverse sealing device；The hydraulic pressure
Sensor can monitor the hydraulic pressure of crack delivery port and water inlet.
The concrete application of the present embodiment：
Accurate control of the example 1. to normal stress.Pressure sensor is housed on normal direction jack, can during experiment
With the size of the load applied by SERVO CONTROL jack.If σ1The normal stress born for test specimen, A1It is test specimen by normal direction
The area of power；σ2The stress applied for normal direction jack, A2For the basal area of normal direction jack piston；σ3For vertical sealing device
The stress acted on piston, A3For the basal area of vertical sealing device piston.So there is σ1A1=σ2A2-σ3A3.Normal direction jack
The size of the power acted on piston in vertical sealing device can accurately be controlled by servo controller, and guarantee effect exists
Normal stress on sample is stably held in setting value.
Example 2. is to cutting swollen processing.Crack can be cut in shear history it is swollen so that top and the bottom are gradually opened.
If using mechanical, fixed sealing device, as crack is opened, sealing property can gradually be deteriorated or even occur leak
Situation.Servo-control system in the utility model can be according to the oil in the data and vertical sealing device of displacement transducer
Press aggregation of data to judge, to cut it is swollen caused by the reduction of oil pressure compensate automatically, ensure the stabilization of sealing.
Example 3. becomes the water pressure test.When carrying out seepage tests, conversion hydraulic pressure is generally required, is carried out under a series of hydraulic pressure
Experiment.Servo-control system in the utility model can monitor the change of hydraulic pressure, and automatically adjust the oil pressure in sealing system,
Allow oil pressure to be consistently greater than hydraulic pressure, reach good sealing effectiveness.
The continuous shear stress of example 4. is tested and discontinuous shearing test.The utility model can carry out the shearings of two kinds of forms-
Seepage tests.When carrying out discontinuous shearing test, elder generation does not apply seal pressure, and now Rubber end completely disengages test specimen, is inciting somebody to action
After test specimen clips to certain displacement, pause shearing, the seal pressure that being applied by servo-drive system needs carries out seepage tests, is oozing
The shearing that seal pressure carries out next stage is unloaded after flowing off-test；When carrying out continuous shear stress experiment, apply at the very start
Encrypt seal pressure, and seepage tests carried out simultaneously in shear history, seal pressure by servo-drive system at any time adjust automatically with
Ensure sealing effectiveness.
Claims (6)
1. a kind of servo-controlled rock fracture shearing seepage tests sealing device, including for shearing cutting for rock fracture test specimen
Cutting apparatus and the seepage apparatus for controlling flow of fluid, the shear include normal direction increased pressure board, upper shear box, down cut
Box, base, upper holder block and lower lock block, the experiment work that rock fracture test specimen is fixed between the upper shear box and down cut box
Position, the upper shear box top connection normal direction increased pressure board, the down cut box connect base, upper holder block are located at upper shear box respectively
Bottom both sides, lower lock block is located at the top both sides of down cut box respectively, and the upper holder block is located at the surface of lower lock block；It is special
Sign is：The sealing device also includes the vertical sealing device at the crack end vertical with shear direction for sealing, for close
The transverse sealing device at the envelope crack end parallel with shear direction and the servo-control system for controlling oil pressure；
The vertical sealing device includes vertical oil gear and vertical Rubber end in lower lock block, the vertical oil gear
Pistons end connects vertical Rubber end, and the vertical Rubber end coordinates with the upper holder block realizes sealing；
The transverse sealing device includes horizontal oil gear and the transverse rubber head positioned at base both sides；The horizontal oil pressure dress
The pistons end connection transverse rubber head put, the transverse rubber head coordinates with test specimen both sides fissure-plane realizes sealing.
A kind of 2. servo-controlled rock fracture shearing seepage tests sealing device as claimed in claim 1, it is characterised in that：
The vertical sealing device also includes the teflon coatings under upper holder block and vertical Rubber end, the vertical Rubber end with it is described
Teflon coatings, which coordinate, realizes sealing；
Described transverse sealing device also includes the Teflon piece and transverse rubber head being additional on the fissure-plane of test specimen both sides, described
Transverse rubber head coordinates with Teflon piece realizes sealing.
3. a kind of servo-controlled rock fracture shearing seepage tests sealing device as claimed in claim 1 or 2, its feature exist
In：The vertical oil gear is made up of vertical oil cylinder, vertical piston, vertical oil inlet pipe and vertical flowline, and oil passes through perpendicular
To the into and out vertical oil cylinder control forward piston stroke of oil pipe, the pistons end of the vertical piston connects vertical Rubber end；
The horizontal oil gear is made up of horizontal oil cylinder, horizontal piston, horizontal oil inlet pipe and horizontal flowline, and oil passes through horizontal stroke
To the into and out horizontal oil cylinder control forward piston stroke of oil pipe；The pistons end connection transverse rubber head of the horizontal piston.
4. a kind of servo-controlled rock fracture shearing seepage tests sealing device as claimed in claim 1 or 2, its feature exist
In：The sealing device also includes servo-control system, and the servo-control system includes data processor and servopump；It is described
Data processor receives and handled the data that the data measurin system transmits, and instruction is communicated into the servopump to control
In-oil cylinder oil pressure in the sealing device.
A kind of 5. servo-controlled rock fracture shearing seepage tests sealing device as claimed in claim 4, it is characterised in that：
The sealing device also includes being used to measure displacement, load, oil pressure, the data measurin system of hydraulic pressure, the data measurin system
Including displacement transducer, load transducer, oil pressure sensor, hydraulic pressure sensor；The data that the measuring system measures are transferred to
Servo-control system realizes sealing control.
6. a kind of servo-controlled rock fracture shearing seepage tests sealing device as claimed in claim 1 or 2, its feature exist
In：The seepage apparatus includes outlet pipe, water inlet pipe, left side upper holder block pipeline, right side upper holder block pipeline and water valve；It is described go out
Water pipe, water inlet pipe, left side upper holder block pipeline and right side upper holder block pipeline are arranged in briquetting, and are equipped with water valve to regulate and control water
Stream.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720897103.1U CN207215662U (en) | 2017-07-24 | 2017-07-24 | A kind of servo-controlled rock fracture shearing seepage tests sealing device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720897103.1U CN207215662U (en) | 2017-07-24 | 2017-07-24 | A kind of servo-controlled rock fracture shearing seepage tests sealing device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107389525A (en) * | 2017-07-24 | 2017-11-24 | 绍兴文理学院 | A kind of servo-controlled rock fracture shearing seepage tests sealing device |
| CN111811995A (en) * | 2020-07-17 | 2020-10-23 | 中国地质大学（北京） | Visual test method and system for simulating coarse single-cross fracture multiphase seepage |
-
2017
- 2017-07-24 CN CN201720897103.1U patent/CN207215662U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107389525A (en) * | 2017-07-24 | 2017-11-24 | 绍兴文理学院 | A kind of servo-controlled rock fracture shearing seepage tests sealing device |
| CN111811995A (en) * | 2020-07-17 | 2020-10-23 | 中国地质大学（北京） | Visual test method and system for simulating coarse single-cross fracture multiphase seepage |
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