CN202101905U - Servo control device of rock mass true triaxial test at site - Google Patents
Servo control device of rock mass true triaxial test at site Download PDFInfo
- Publication number
- CN202101905U CN202101905U CN 201120175003 CN201120175003U CN202101905U CN 202101905 U CN202101905 U CN 202101905U CN 201120175003 CN201120175003 CN 201120175003 CN 201120175003 U CN201120175003 U CN 201120175003U CN 202101905 U CN202101905 U CN 202101905U
- Authority
- CN
- China
- Prior art keywords
- rock mass
- control system
- steel plate
- servo
- face
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a servo control device of a rock mass true triaxial test at site, which comprises an axial pressure loading system, a confining pressure loading system and a measuring and collecting control system. Steel plates are horizontally placed on the top of a columnar rock mass sample at the site of an underground chamber, at least two or more than two jacks are evenly distributed on the steel plates, the steel plates are horizontally arranged on each jack, and the steel plates are provided with force transmission columns, the steel plates are horizontally placed on the force transmission columns, and the top of the force transmission columns abut against the rock mass surface of chamber. The length of the columnar rock mass sample ranges from 30cm to 100cm, the width ranges from 30cm to 100cm, and the height ranges from 60cm to 150cm. One end of a testing rod is arranged at the center of the top of the columnar rock mass sample, the other end of the testing rod penetrates through the steel plate holes and is connected with the measuring and collecting control system, and the jacks are connected with an axial pressure loading servo control system. By adopting a large dimension rock mass sample at the site of the underground chamber, high axial pressure is provided through the large tonnage jacks, and the servo control device is born by the rock mass at site. The rock mass true triaxial test is undergone under complex stress conditions, servo control can be loaded independently, and more accurate rock mass comprehensive strength is obtained.
Description
Technical field
The utility model relates to a kind of rock mass mechanics testing equipment, relates in particular to a kind of device that utilizes underground chamber to carry out on-the-spot large scale, heavily stressed rock mass true triaxial test.
Background technology
Because large-scale underground hole crowd's scale increases gradually, residing subsurface geology environmental baseline is more sophisticated also.Therefore, exist under buried, the high-ground stress condition, the stable situation of hole crowd's country rock, destroy problems such as form and failure mechanism.The Test in Situ mechanical test is the main approaches that solves this type problem.
Current main employing direct shear test is obtained Test in Situ intensity; Direct shear test need be preset shear surface, and test findings can only reflect shear surface intensity, can't disclose the rock mass comprehensive strength; Direct shear test can only be supporting with minority criterion of strength such as Mohr-Coulomb, can not consider the intermediate principal stress influence.Carrying out the Test in Situ triaxial test is the effective way of understanding the rock mass comprehensive strength.Can know from list of references; Changjiang Academy of sciences has carried out the Test in Situ triaxial test in the Ge Zhou Ba in 1972; New collection coal field soft rock is thrown to state by Wuhan rock-soil mechanics research institute of the Chinese Academy of Sciences; Carried out the Test in Situ three axis creep test, Japanese power industry research centre utilizes its equipment of developing voluntarily, the confined pressure triaxial test such as has carried out to eruptive tuff.
Triaxial test rock mass specimen size was little in the past, can't disclose the rock mass comprehensive strength, and bigger apart with the actual integrated status of engineering rock mass, size effect is obvious.
As to carry out on-the-spot large scale rock mass test, loading provides axial compression to sample to need large-tonnage jack, thereby also need big counter-force carry, and has the rigidity of test-bed now and go out force level to be difficult to meet the demands.
Summary of the invention
The purpose of the utility model is in order to overcome the defective of prior art; A kind of on-the-spot large scale rock mass of underground chamber sample that utilizes is provided; Large-tonnage jack loads high axial compression is provided, and by Test in Situ the axial compression counter-force is provided, and is applicable to the rock mass true triaxial test equipment of complex stress condition; But the independent loads servocontrol obtains rock mass comprehensive strength accurately.
The utility model solves its technical matters and adopts following technical scheme: a kind of on-the-spot servocontrol rock mass true triaxial test device, comprise axial compression loading system, confined pressure loading system, measurement and acquisition control system, and mainly be at the on-the-spot column rock mass of underground chamber sample end face horizontal steel plate; Be uniformly distributed with at least two of settings or two above lifting jack on the steel plate, horizontal steel plate on each lifting jack is provided with force-transmitting pole on the steel plate; Cavern, top rock mass face on the force-transmitting pole; Force-transmitting pole and cavern's rock mass face are put column rock mass specimen size scope: long 30cm to 100cm, wide 30cm to 100cm by steel plate is separated; High 60cm to 150cm; Measuring staff one end is arranged in the column rock mass sample end face intracardiac, and the measuring staff other end passes steel plate hole and connects measurement and acquisition control system, and very heavy apical grafting axial compression loads servo-control system.
And it is that computing machine switches through parallel operation EDC that axial compression loads servo-control system, and converter EDC connects servo-valve, servo-valve one termination oil sources, and another termination supercharger, supercharger connects lifting jack.
And jack pair column rock mass sample end face loads the highest axial compression 120MPa.
And measurement and acquisition control system are that measuring staff connects axial deformation survey table, and axial deformation is surveyed table and inserted computing machine.
The utility model compared with prior art also has following major advantage:
1, utilize Test in Situ to make the column large dimension specimen; A plurality of large-tonnage jack load axial compression; Overcome the rigidity of test-bed and the problem of exerting oneself; Test in Situ large dimension specimen test discloses the rock mass comprehensive strength comprehensively, avoid sample size little with engineering rock mass at a distance of big and size effect that produce.
2, load axial compression owing on column large dimension specimen end face, establish a plurality of large-tonnage jack; Give cavern, top rock mass face through force-transmitting pole with the Load Transfer of lifting jack; Make full use of the underground chamber Test in Situ and carry, produce big counter-force, reach the axial compression loading purposes of column large dimension specimen.
3, jack pair column rock mass sample applies axial compression, and very heavy apical grafting axial compression loads servo-control system, can independently control the axial compression of column rock mass sample, owing to insert servo-valve, the control supercharger can be tested different axial compressions and load, and discloses the rock mass comprehensive strength.
4, measurement and acquisition control system connect distortion survey table by measuring staff, and insert computing machine, thereby make measurement and acquisition test data by computer control, make acquisition test data in real time, accurate.
5, column rock mass specimen size scope: long 30cm to 100cm, wide 30cm to 100cm, high 60cm to 150cm utilizes underground chamber rock mass scene that the sample size that changes in the certain limit can be provided, and has enlarged the test apparatus usable range, and the scope of application is more extensive.
Description of drawings
Fig. 1 is the on-the-spot servocontrol rock mass of a utility model true triaxial test device synoptic diagram.
1. cavern's rock mass face, 2,2 ', 2 ". billet, 2-1. steel plate hole, 3. force-transmitting pole, 4. lifting jack; 5. oil pipe, 6. reaction frame, 7. radial deformation is surveyed table, 7 '. measuring staff, 8. table is surveyed in axial deformation; 8 '. measuring staff, 9,9 '. flat jack, 10. on-the-spot column rock mass sample, 11. superchargers, 12. servo-valves; 13. servo oil sources, 14. converter EDC, 15. computing machines, 15 '. measure and acquisition control system 12 ". axial compression loads servo-control system.
Embodiment
Below in conjunction with accompanying drawing the utility model is further specified.
As shown in Figure 1, a kind of on-the-spot servocontrol rock mass true triaxial test device is made up of reaction frame, axial compression loading system, confined pressure loading system, measurement and acquisition control system.Utilize the underground chamber Test in Situ directly to make the column large dimension specimen, range of size: long 30cm to 100cm, wide 30cm to 100cm; High 60cm to 150cm is convenient to provide the sample size that changes in the certain limit, horizontal steel plate (2) on column rock mass sample (10) end face; Be uniformly distributed with at least two of settings or two above lifting jack (4) on it; Each lifting jack (4) is gone up horizontal steel plate (2 '), and force-transmitting pole (3) is provided with on the steel plate (2 '), and horizontal steel plate above the force-transmitting pole (3) (2 "); and withstand cavern's rock mass end face (1); utilize the underground chamber rock mass strength, directly carry the big counter-force that the lifting jack axial compression produces, reach the axial compression of column large dimension specimen and load effect with cavern's rock mass face.Between column rock mass sample (10) end face and the lifting jack (4), between lifting jack (4) end face and the force-transmitting pole (3), between force-transmitting pole (3) end face and the cavern's rock mass face (1) respectively by steel plate (2), (2 '), (2 ") are at a distance from putting; Lifting jack (4) connects axial compression and loads servo-control system (12 "); axial compression loads servo-control system, and (12 ") are controlled column rock mass sample (10) end face lifting jack (4) axial compression separately and loaded; Axial compression loads servo-control system, and (12 ") are switched through parallel operation EDC (14) by data line with computing machine (15); switch through parallel operation EDC (14) and insert servo-valve (12); servo-valve (12) is through oil pipe (5) one termination oil sources (13), and the other end inserts supercharger (11), and supercharger (11) connects lifting jack (4) lifting jack (4) column rock mass sample (10) end face is loaded the highest axial compression 120MPa.
The built-in measuring staff in column large dimension specimen end face center (8 '); Measuring staff (8 ') other end passes steel plate hole (2-1) and connects measurement and acquisition control system (15 '); Measurement and acquisition control system (15 ') are that measuring staff (8 ') connects axial deformation survey table (8); The data that table (8) is surveyed in axial deformation insert computing machine (15) through data line, output sample end face deformation data.
The rock mass true three-axial compression test apparatus; The test unit reaction frame is a rectangular cylinder, and rectangular cylinder reaction frame (6) inner face is all around installed flat jack (9) (9 '), and is nested with outside column rock mass sample (10); Confined pressure loads servo-control system and inserts column rock mass sample (10) side two corresponding surface flat jacks (9) (9 '); And can control the confined pressure loading separately, and confined pressure loads servo-control system and by data line computing machine (15) is switched through parallel operation EDC (14), and converter EDC (14) inserts servo-valve (12); Servo-valve (12) is through oil pipe (5) one termination oil sources (13); The other end inserts supercharger (11), and supercharger (11) connects flat jack (9) (9 '), and flat jack (9) (9 ') loads high confining pressure 25MPa to column rock mass sample (10) four sides.
Computing machine (15), converter EDC (14) are opened in the installation of rock mass true three-axial compression test apparatus, start servo oil sources (13).Testing crew is imported computing machine (15) with TD, begins test then.The instruction of testing crew converts electric signal into by converter EDC (14); Send to servo-valve (12); Servo-valve (12) is according to the instruction of converter EDC (14); The pressure that servo oil sources (13) provides is regulated, then specified pressure is flowed to supercharger (11), supercharger amplifies the pressure of servo-valve; Then the pressure that amplifies is flowed to the axial lifting jack of column large dimension specimen (4) through oil pipe (5), (12 ") control column rock mass samples (10) axially lifting jack (4) axial compression load the axial compression Loading Control System.After sample (10) received lifting jack (4) load action, the distortion that is taken place was surveyed table (8) collection by axial deformation then respectively through the measuring staff transmission, and passes to computing machine (15) through data line, and computing machine (15) is drawn real-time trial curve by the testing crew requirement.
Claims (4)
1. on-the-spot servocontrol rock mass true triaxial test device; Comprise axial compression loading system, confined pressure loading system, measurement and acquisition control system, it is characterized in that: on-the-spot column rock mass sample (10) the end face horizontal steel plate (2) of underground chamber is uniformly distributed with at least two of settings or two above lifting jack (4) on the steel plate (2); Each lifting jack (4) is gone up horizontal steel plate (2 '); Force-transmitting pole (3) is set on the steel plate (2 '), and force-transmitting pole (3) is gone up top cavern's rock mass face (1), force-transmitting pole (3) and cavern's rock mass face (1) by steel plate (2 ") are at a distance from putting; column rock mass sample (10) range of size: long 30cm to 100cm; wide 30cm to 100cm, high 60cm to 150cm, measuring staff (8 ') end is arranged in column rock mass sample (10) end face intracardiac; measuring staff (8 ') other end passes steel plate hole (2-1) and connects and measure and acquisition control system (15 '), and lifting jack (4) connects axial compression loading servo-control system (12 ").
2. according to the said a kind of on-the-spot servocontrol rock mass true triaxial test device of claim 1; It is characterized in that: axial compression loading servo-control system (12 ") are switched through parallel operation EDC (14) for computing machine (15); converter EDC (14) connects servo-valve (12); servo-valve (12) one termination oil sources (13), another termination supercharger (11), and supercharger (11) connects lifting jack (4).
3. according to claim 1 or 2 said a kind of on-the-spot servocontrol rock mass true triaxial test devices, it is characterized in that: lifting jack (4) loads the highest axial compression 120MPa to column rock mass sample (10) end face.
4. according to the said a kind of on-the-spot servocontrol rock mass true triaxial test device of claim 1, it is characterized in that: measurement and acquisition control system (15 ') connect axial deformation survey table (8) for measuring staff (8 '), and axial deformation is surveyed table (8) and inserted computing machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120175003 CN202101905U (en) | 2011-05-27 | 2011-05-27 | Servo control device of rock mass true triaxial test at site |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120175003 CN202101905U (en) | 2011-05-27 | 2011-05-27 | Servo control device of rock mass true triaxial test at site |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202101905U true CN202101905U (en) | 2012-01-04 |
Family
ID=45387911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120175003 Expired - Fee Related CN202101905U (en) | 2011-05-27 | 2011-05-27 | Servo control device of rock mass true triaxial test at site |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202101905U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102353592A (en) * | 2011-05-27 | 2012-02-15 | 长江水利委员会长江科学院 | On-site servo controlled actual triaxial testing apparatus for rock mass |
-
2011
- 2011-05-27 CN CN 201120175003 patent/CN202101905U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102353592A (en) * | 2011-05-27 | 2012-02-15 | 长江水利委员会长江科学院 | On-site servo controlled actual triaxial testing apparatus for rock mass |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102353592A (en) | On-site servo controlled actual triaxial testing apparatus for rock mass | |
| CN102252910A (en) | True triaxial testing device for servo control rock | |
| CN103969107B (en) | High pressure servo moves true triaxial test machine | |
| CN102967506B (en) | Middle-sized rock servo control true triaxial test device | |
| CN103398861B (en) | A kind of true triaxial rockburst physical simulation experiment system for deep-lying tunnel | |
| CN103234830B (en) | Anchoring property experiment platform of anchor rod | |
| CN106644758B (en) | Rock direct shear and point load test device and test operation method thereof | |
| CN102914475B (en) | Shear test device for observing mechanical property of interface between underwater soil and structure | |
| CN108007800B (en) | Model test device and test method for circular dynamic load soil body settlement | |
| CN201859095U (en) | Three-dimensional loading simulation test device for tunnel borer | |
| CN101403645B (en) | Hydraulic pressure and soil pressure independently loaded shield tunneling structure prototype experiment apparatus | |
| CN103776685A (en) | Static force load testing device for concrete beam | |
| CN102175533A (en) | Ultra-large type geotechnical engineering three-dimensional model test system | |
| CN102043018B (en) | Three-dimensional loading simulation test device for tunnel boring machine | |
| CN102147342A (en) | Static test system for min-aircraft structure | |
| CN201983987U (en) | Extra-large geotechnical engineering three-dimensional model test system | |
| CN103698493A (en) | Multiscale macroscopic-microscopic tester for rock and soil materials under multi-field coupling | |
| CN203798658U (en) | High-voltage servo true three-axis testing machine | |
| CN207798559U (en) | A kind of three-axis tester and pilot system | |
| CN203811459U (en) | Static load test device for concrete beam | |
| CN210720389U (en) | Tunnel excavation process analogue test device | |
| CN210427198U (en) | Multifunctional test platform device | |
| CN202101906U (en) | Servo control device of rock mass true triaxial test | |
| CN202485914U (en) | Hydraulic support model experiment table | |
| CN202101905U (en) | Servo control device of rock mass true triaxial test at site |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120104 Termination date: 20150527 |
|
| EXPY | Termination of patent right or utility model |