CN100473968C - Stress-water flow-ohemical coupled rock urpture process mesomechanic loading system - Google Patents
Stress-water flow-ohemical coupled rock urpture process mesomechanic loading system Download PDFInfo
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- CN100473968C CN100473968C CNB2004100612343A CN200410061234A CN100473968C CN 100473968 C CN100473968 C CN 100473968C CN B2004100612343 A CNB2004100612343 A CN B2004100612343A CN 200410061234 A CN200410061234 A CN 200410061234A CN 100473968 C CN100473968 C CN 100473968C
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Abstract
The present invention disclosed a stress-water flow-chemical coupled rock breaking process fine observation mechanical loading system. Said system is formed from servo control system, U-type rigid loading platform, movable support, mobile support, 3-D video micro-digital recording system, two monitors, video distributor, two digital cameras and two CCD cameras.
Description
Technical field:
The present invention relates to the rock fine observation mechanical test, more specifically relate to the fine observation mechanical test of the rock deforming and cracking overall process of the stress-chemical coupling effect under stress-current-chemical coupling effect and the different confined pressures.Be applicable to the rock mechanics experiment of influences such as considering many influence factors under the complex conditions such as stress, confined pressure, current, chemical corrosion.
Background technology:
Chemistry-the current of fissure rock-stress coupling process research is one of problem of forefront, international rock mechanics field, be one of basic research problem of numerous rock engineerings that close with water such as nuke rubbish underground disposal, the storage of the underground energy, underground carbon dioxide storage, geothermal exploitation, oil exploitation, the dam foundation, side slope, chamber, have crucial scientific meaning.Be mainly reflected in, on the one hand, in many influence factors of the security of rock engineering, water is a most active factor.After rock soil mass is subjected to the chemical solution erosion action, owing to having weakened to connect between mineral grain or corrode the mineral grain lattice, water-rock effect makes the variation of rock soil mass physico-mechanical properties, aqueous solution is taken away the corrosion material by the corrosion rock soil mass simultaneously, make rock soil mass proterties variation, even engineering accident appears, to the long-time stability generation threat of Geotechnical Engineering.The Longmen Grottoes of Luoyang one by one as world cultural heritage, because rock cave district limestone infiltration corrosion causes most of caves cave to be seeped water all the year round constantly, top, cave cave vegetation grows in addition, the dissolution porosity that chemical solution causes does not still have good resolution at present still in continuous increase; And can be rated as the Zhejiang dragon trip rock cave of the ninth-largest miracle in the world, one of engineering problem of the main deformation failure that these groups of building faced also is that sandstone that the groundwater seepage corrosion causes collapses and pushes away the piece problem.On the other hand, utilize the effect of chemistry can improve drilling efficiency.Relevant studies show that: low than under the drying condition of the destruction toughness value under the wet condition, crack propagation velocity is accelerated.ξDian Wei and crack growth, drilling efficiency have certain relation.ξDian Wei equals at 0 o'clock, and rock material fragility strengthens, and responsive more to the influence of environment, compressive strength is minimum, and subcritical Crack Growth speed will improve 1 more than the order of magnitude.Therefore, if the chemical solution of some zero ξDian Weis is joined in drilling fluid and the liquid that breaks, but just can improve rock drillability and disruptiveness.The acidifying exploitation in the low-permeability oil gas field that had occurred since modern times, the chemical grouting reinforcing of rock soil mass and antiseepage etc., show chemistry to act on Application in Geotechnical Engineering more and more extensive.
Above-mentioned research does not relate to interactional mechanism in crack and analytical approach research thereof under stress-current-chemical coupling as yet.In fact, there are many cracks in jointed rock mass, chemical solution is initial damage to the corrosion failure of rock mass from rock mass medium initial configuration face under many situations, Palmer pointed out once that large-scale solution cavity system was to grow along aspect of depositing earlier in the rock or structural plane mostly, in thousands of caves of being studied, 57% along the aspect growth, and crack network growth is deposited on 42% edge earlier, only has 1% along the pores'growth between rock particles.And the security of many cracks (joint) rock mass often is subjected to the influence of stress, current, chemical coupling effect.Therefore, rock fracture germinating under research stress, current, the chemical coupling effect, expansion, perforation and interactional internal injury evolutionary process, rule, the suction-operated of the formation in the corrosion failure mechanism of chemical environment, new crack and the new chemical substance that forms the crack and generation speed etc. have even more important and scientific meaning widely; The constitutive relation of many fissure rocks destructive process is not also set up under stress-current-chemical coupling effect, thereby fails to realize that the rock failure process to being subjected to chemistry, current, stress coupling effectively simulates and behavior prediction.Its basic reason is to lack the testing equipment that matches with research.
Engineering rock mass in the reality all has certain buried depth, is subjected to certain confined pressure effect, carries out the chemical corrosion rock mechanics experiment under the different confined pressures, more can satisfy the needs of actual engineering, and result of calculation also more approaches actual engineering.Study under different confined pressures, the different chemical solution effects rock failure mechanism of rock damage evolutionary process, rule, the corrosion failure mechanism of chemical environment has even more important and scientific meaning widely under the different confined pressures; Be subjected to the restriction of experimental technique and equipment, also can't realize the rock failure process that is subjected to different confined pressures, different chemical solution effects is effectively simulated and behavior prediction at present.
Fine observation mechanical tests such as test of CT real time scan and the test of microscope real-time monitored are a kind of effective means that disclose its internal injury evolution rule in the rock failure process, but the test of CT real time scan can not realize the rock burst overall process research that water chemistry burn into current and stress are coupled with the test of microscope real-time monitored.
Since the essence of water-rock effect is to weaken to connect between mineral grain or corrosion mineral grain lattice and make the variation of rock soil mass physico-mechanical properties, chemical solution is taken away the corrosion material by the corrosion rock soil mass simultaneously, makes rock soil mass proterties variation.Therefore, need to adopt the fine observation mechanical test method, disclose under this stress-current-chemical corrosion coupling its internal injury evolution rule in the rock failure process.
3 D video microscopic digital register system (U.S. section looks the company of reaching and produces this product) comprises microscope, shooting optical cable, storage register.Microscope is connected to the photograph interface by the shooting optical cable, and with the image information stored record that microscope monitored, 3 D video microscopic digital register system is provided with the s video interface, the information in the storage register outwards can be transmitted by this interface.This system can carry out micro-amplification to image, and stored record, and the high resolving power and the high definition image quality of 1600 * 1200 pixels can be provided, and the image of record is handled.
Now be used for the contract servo-control system of full rupture process experiment of rock single shaft and three axial compressions and mainly comprise load transducer, actuator and oil sources, actuator comprises load cylinder and loads piston, its weak point is, the rock uniaxial compression fine observation mechanical test device of inconvenience erection stress-current-chemical coupling, number of patent application 200410061081.2, and contract fine observation mechanical test device and the thin observation device of seeing of rock burst overall process three axial compressions under the chemical corrosion, number of patent application 200410061080.8, thereby can't realize the full rupture process fine observation mechanical test of rock of stress-current-chemical coupling.
Summary of the invention
The objective of the invention is to, the rock failure process mesomechanics loading system of a kind of stress-current-chemical coupling is provided.This system is connected the load transducer of servo-control system, loading piston with U type rigidity weighted platform, adopt 3 D video microscopic digital register system, two monitors, video distributor, two digital cameras and two ccd video cameras, can be multi-faceted, multi-angle real-time monitored and write down Test Information.Be fit to place under the rock uniaxial compression fine observation mechanical test device (number of patent application 200410061081.2) of stress-current-chemical coupling and the chemical corrosion rock burst overall process three axial compressions fine observation mechanical test device (number of patent application 200410061080.8) that contracts.
In order to achieve the above object, the present invention adopts following technical scheme:
The rock failure process mesomechanics loading system of a kind of stress-current-chemical coupling, this system is made up of servo-control system, U type rigidity weighted platform, support, movable supporting frame, 3 D video microscopic digital register system, first monitor, video distributor, second monitor, first digital camera, second digital camera, first ccd video camera and second ccd video camera.
Wherein: servo-control system comprises load transducer, actuator and oil sources, and actuator comprises loading piston and load cylinder; 3 D video microscopic digital register system comprises microscope.
U type rigidity weighted platform is a U-shaped, the centre at its two ends has coaxial circular hole, the size of one end circular hole and the size of load transducer are complementary, load transducer is fixed in the circular hole, and the inwall of protrusion U type rigidity weighted platform, the size of other end circular hole is complementary with the size that loads piston, actuator is installed in this end, the loading piston of actuator is inserted this circular hole from the outer wall of U type rigidity weighted platform, with the sealing of O RunddichtringO, the load cylinder of actuator is fixed on the outer wall of this end of U type rigidity weighted platform between piston and circular hole; Microscope is installed on the movable supporting frame, movable supporting frame places a side of U type rigidity weighted platform, make microscope above U type rigidity weighted platform, to move, microscope is connected with the photograph interface of 3 D video microscopic digital register system by the shooting optical cable, the s video interface of 3 D video microscopic digital register system is connected with the first monitor video input end, and the video output terminals of first monitor is connected with the input end of first digital camera; Support is fixed on the two ends of U type rigidity weighted platform, two ccd video cameras are rack-mount, two ccd video cameras all can move on support, and the height and the angle of adjustment shooting arbitrarily, the video output terminals of first ccd video camera is connected with the video inputs of video distributor, the video output terminals of second ccd video camera is connected with another video inputs of video distributor, the video output terminals of video distributor is connected with the video inputs of second monitor, and the video output terminals of second monitor is connected with the second digital camera video inputs.
The application of the present invention in the rock fine observation mechanical test:
1, rock sample being put under the rock uniaxial compression fine observation mechanical test device (number of patent application 200410061081.2) of stress-current-chemical coupling or the chemical corrosion three axial compressions of rock burst overall process contracts in the fine observation mechanical test device (number of patent application 200410061080.8).
2, rock burst overall process three axial compressions under the rock uniaxial compression fine observation mechanical test device of stress-current-chemical coupling or the chemical corrosion are contracted fine observation mechanical test device is put on the U type rigidity weighted platform.
3, the microscope on the movable supporting frame is moved to directly over the test specimen, adjust two ccd video cameras on the support, make it can monitor the whole audience image on two surfaces of test specimen.
4, by servo-control system U type rigidity weighted platform is exerted pressure.
5, mobile microscope carries out micro-amplification monitoring to test specimen upper surface each several part, when monitoring the test specimen initial rupture when taking place, aims at the overall process monitoring of breaking of this position.
6, microscope carries out micro-amplification and signal is transferred to 3 D video microscopic digital register system storing to the destructive process of test specimen, and 3 D video microscopic digital register system transfers to signal that first monitor shows and simultaneously by the first digital camera record.
7, two ccd video cameras from different orientation simultaneously the crack propagation overall process to two surfaces of test specimen carry out real-time monitored and record, and transfer in the video distributor by the two-path video signal, video distributor is simultaneously displayed on the two-path video signal on second monitor and by the second digital camera record.
8, under the coupling of different confined pressures, different chemical solution, different in flow rate and different load, its destructive process to rock sample, mode also have corresponding variation.The purpose of native system is exactly for observing, writing down this variation research technique is provided, for chemical solution under stress-current-three couplings of chemical corrosion and the different confined pressure provides foundation to rock failure mechanism of rock theoretical analysis of function.
Advantage and good effect that the present invention has are:
1, native system can carry out different chemical solution, different in flow rate and the different load acting in conjunction fine observation mechanical test to the rock failure mechanism of rock, also can carry out under the different confined pressures chemical solution to the fine observation mechanical test of rock corrosion failure, the mechanism analysis of the rock failure mechanism of rock of bringing out for the coupling of stress, current, chemistry and stress, confined pressure, chemistry provides strong foundation;
2, high precision, high resolving power ground are caught in real time, follow the tracks of, are discerned crack initiation, the expansion of crackle in the rock sample destructive process.Can carry out whole process monitoring and record to the destructive process of a certain partial points of test specimen by microscope, with CCD shooting can carrying out whole audience scanning observational record to the destructive process of whole test specimen;
3, can carry out whole audience observation or local amplification observation to the difference destruction face of test specimen;
4, native system is simple to operate;
5, overall process playback, the forming process that can help deep initial rupture, expansion, perforation, expansion and the destruction of understanding the micro-crack of rock with breed mechanism;
6, be the storage of nuclear waste disposal, geothermal exploitation, petroleum drilling, earthquake mechanism, poisonous and harmful substance, different chemical solution, different in flow rate and the different load acting in conjunction Geotechnical Engineering to rock failure mechanism of rock influence need is considered in Geotechnical Engineering long-time stability evaluations etc., provides more comprehensively, research technique reliably.
Description of drawings:
Fig. 1 is a structural representation of the present invention.
Wherein: 1 is that load transducer, 2 is that loading piston, 3 is that actuator, 4 is that U type rigidity weighted platform, 5 is that support, 6 is that movable supporting frame, 7 is that microscope, 8 is that 3 D video microscopic digital register system, 9 is that first monitor, 10 is that video distributor, 11 is that second monitor, 12 is that first digital camera, 13 is that second digital camera, 14 is that first ccd video camera, 15 is second ccd video camera.
Embodiment:
The present invention is further illustrated below in conjunction with accompanying drawing:
As shown in Figure 1, the rock failure process mesomechanics loading system of a kind of stress-current-chemical coupling, this system is made up of servo-control system, U type rigidity weighted platform 4, support 5, movable supporting frame 6,3 D video microscopic digital register system 8, first monitor 9, video distributor 10, second monitor 11, first digital camera 12, second digital camera 13, first ccd video camera 14 and second ccd video camera 15.
Wherein: servo-control system comprises load transducer 1 and actuator 3, and actuator 3 comprises loading piston 2 and load cylinder; 3 D video microscopic digital register system 8 comprises microscope 7.
U type rigidity weighted platform 4 is a U-shaped, the centre at its two ends has coaxial circular hole, the size of the size of one end circular hole and load transducer 1 is complementary, load transducer 1 is fixed in the circular hole, and the inwall of protrusion U type rigidity weighted platform 4, the size of other end circular hole is complementary with the size that loads piston 2, actuator 3 is installed in this end, the loading piston 2 of actuator 3 is inserted this circular hole from the outer wall of U type rigidity weighted platform 4, with the sealing of O RunddichtringO, the load cylinder of actuator 3 is fixed on the outer wall of U type rigidity weighted platform 4 these ends between piston and circular hole; Microscope 7 is installed on the movable supporting frame 6, movable supporting frame 6 places a side of U type rigidity weighted platform 4, make microscope 7 above U type rigidity weighted platform 4, to move, microscope 7 is connected with the photograph interface of 3 D video microscopic digital register system 8 by the shooting optical cable, the s video interface of 3 D video microscopic digital register system 8 is connected with first monitor, 9 video inputs, and the video output terminals of first monitor 9 is connected with the input end of first digital camera 12; Support 5 is fixed on the two ends of U type rigidity weighted platform 4, two ccd video cameras 14,15 are installed on the support 5, two ccd video cameras 14,15 all can move on support 5, and the height and the angle of adjustment shooting arbitrarily, the video output terminals of first ccd video camera 14 is connected with the video inputs of video distributor 10, the video output terminals of second ccd video camera 15 is connected with another video inputs of video distributor 10, the video output terminals of video distributor 10 is connected with the video inputs of second monitor 11, and the video output terminals of second monitor 11 is connected with second digital camera, 13 video inputs.
Claims (1)
1, the rock failure process mesomechanics loading system of a kind of stress-current-chemical coupling, it is characterized in that this system is made up of servo-control system, U type rigidity weighted platform (4), support (5), movable supporting frame (6), 3 D video microscopic digital register system (8), two monitors (9,11), video distributor (10), two digital cameras (12,13) and two ccd video cameras (14,15); U type rigidity weighted platform (4) is a U-shaped, the centre at its two ends has coaxial circular hole, the size of the size of one end circular hole and load transducer (1) is complementary, load transducer (1) protrudes the inwall of U type rigidity weighted platform (4), and be fixed in the circular hole, the size of other end circular hole is complementary with the size that loads piston (2), actuator (3) is installed in this end, the loading piston (2) of actuator (3) is inserted this circular hole from the outer wall of U type rigidity weighted platform (4), with the sealing of O RunddichtringO, the load cylinder of actuator (3) is fixed on the outer wall of this end of U type rigidity weighted platform (4) between piston and circular hole; Movable supporting frame (6) places a side of U type rigidity weighted platform (4), microscope (7) is installed on the movable supporting frame (6), microscope (7) is connected with the photograph interface of 3 D video microscopic digital register system (8) by the shooting optical cable, the s video interface of 3 D video microscopic digital register system (8) is connected with first monitor (9) video inputs, and the video output terminals of first monitor (9) is connected with the input end of first digital camera (12); Support (5) is fixed on the two ends of U type rigidity weighted platform (4), two ccd video cameras (14,15) are installed on the support (5), the video output terminals of first ccd video camera (14) is connected with the video inputs of video distributor (10), the video output terminals of second ccd video camera (15) is connected with another video inputs of video distributor (10), the video output terminals of video distributor (10) is connected with the video inputs of second monitor (11), and the video output terminals of second monitor (11) is connected with second digital camera (13) video inputs.
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| CNB2004100612343A CN100473968C (en) | 2004-11-30 | 2004-11-30 | Stress-water flow-ohemical coupled rock urpture process mesomechanic loading system |
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| CNB2004100612343A CN100473968C (en) | 2004-11-30 | 2004-11-30 | Stress-water flow-ohemical coupled rock urpture process mesomechanic loading system |
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| CN100473968C true CN100473968C (en) | 2009-04-01 |
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| CN109085321B (en) * | 2018-07-25 | 2021-06-01 | 石家庄铁道大学 | Calibration method of rock mesomechanics parameters and terminal equipment |
| CN109520842B (en) * | 2019-01-02 | 2023-08-22 | 安徽理工大学 | Dynamic and static load and fracture pressure coupling fractured rock mechanical test device and method thereof |
| CN110174233B (en) * | 2019-05-09 | 2020-10-13 | 太原理工大学 | Testing device for component under coupling action of long-term load-corrosion-lateral impact load |
| DE102022103997B3 (en) | 2022-02-21 | 2023-07-20 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Computer-implemented method for detecting damage in a body, trained neural network for detecting damage, and test system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB571917A (en) * | 1942-07-18 | 1945-09-14 | Sulzer Ag | Improvements in or relating to apparatus for use in the testing of metals |
| CN86107175A (en) * | 1986-11-01 | 1987-11-11 | 武汉地质学院 | Optical instrument for determining rock compositions |
| US5379235A (en) * | 1991-05-21 | 1995-01-03 | Fisher; Jack | System and method for the measurement of mechanical properties of elastic materials |
| CN2452023Y (en) * | 2000-11-29 | 2001-10-03 | 中国科学院武汉岩土力学研究所 | Digital real-time multi-direction observation recording analyzer during the whole process of crack propagation |
| CN2453429Y (en) * | 2000-12-14 | 2001-10-10 | 中国科学院长春光学精密机械与物理研究所 | Instrument for testing friction of miniature element |
| CN1401987A (en) * | 2002-09-28 | 2003-03-12 | 清华大学 | Circular loading shear apparatus for observing earth and structural member contact face mechanical property |
| CN1510410A (en) * | 2002-12-20 | 2004-07-07 | 北京有色金属研究总院 | Computer observing and controlling systems for microhardometer |
-
2004
- 2004-11-30 CN CNB2004100612343A patent/CN100473968C/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB571917A (en) * | 1942-07-18 | 1945-09-14 | Sulzer Ag | Improvements in or relating to apparatus for use in the testing of metals |
| CN86107175A (en) * | 1986-11-01 | 1987-11-11 | 武汉地质学院 | Optical instrument for determining rock compositions |
| US5379235A (en) * | 1991-05-21 | 1995-01-03 | Fisher; Jack | System and method for the measurement of mechanical properties of elastic materials |
| CN2452023Y (en) * | 2000-11-29 | 2001-10-03 | 中国科学院武汉岩土力学研究所 | Digital real-time multi-direction observation recording analyzer during the whole process of crack propagation |
| CN2453429Y (en) * | 2000-12-14 | 2001-10-10 | 中国科学院长春光学精密机械与物理研究所 | Instrument for testing friction of miniature element |
| CN1401987A (en) * | 2002-09-28 | 2003-03-12 | 清华大学 | Circular loading shear apparatus for observing earth and structural member contact face mechanical property |
| CN1510410A (en) * | 2002-12-20 | 2004-07-07 | 北京有色金属研究总院 | Computer observing and controlling systems for microhardometer |
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