CN101886996A - Triaxial compression rheological test system capable of simulating engineering geological environment - Google Patents
Triaxial compression rheological test system capable of simulating engineering geological environment Download PDFInfo
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- CN101886996A CN101886996A CN2010101941409A CN201010194140A CN101886996A CN 101886996 A CN101886996 A CN 101886996A CN 2010101941409 A CN2010101941409 A CN 2010101941409A CN 201010194140 A CN201010194140 A CN 201010194140A CN 101886996 A CN101886996 A CN 101886996A
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Abstract
The invention provides a triaxial compression rheological test system capable of simulating an engineering geological environment, belonging to rock material compression experimental facilities. The remarkable characteristics of the invention are as follows: a test chamber in the triaxial compression rheological test system capable of simulating the engineering geological environment can depend on a normal rheological compression test device to realize the analogue simulation of the variations of a temperature field, a humidity field and a chemical field in the engineering geological environment by utilizing a humidifier, a heater and a fluid tank. The device fundamentally solves the problems of larger deviation of rock mechanics parameters obtained by a laboratory test and a field in-situ test and analogue simulation of a geotechnical wall-rock multi-field coupling environment. The test system has compact structure and low cost, is rather easy to install and dismount test pieces, detectors, pipelines and lead wires, and has stronger adaptability on the test pieces with different lithologies and sizes, thereby providing a set of complete technology and means for the study on the mechanical behavior of the wall-rock stability under a complex engineering geological condition.
Description
Technical field
Patent of the present invention relates to a kind of rock mass rheology deformation test, specifically is a kind of imitative engineering geology environment rock mass rheology deformation test system, is particularly useful for many couplings of engineering rock mass rheology deformation failure mechanical test.
The physical model of ROCK MECHANICS RESEARCH mostly is the experimental enviroment of indoor perfect condition at present, and its simulated conditions can not be represented stratum actual physical chemistry mechanics ambient conditions, and gained result and engineering actual result have certain error.Therefore Simulation Engineering geologic media three axial compression contracted flows become the exploitation of pilot system and use significant.At present, there are not emulation geologic media three axial compression contracted flows to become pilot system at home and abroad.
Background technology
Along with mining depth increases, the underground space is extended to depths more, deep wall rock and prop will run into various rugged surroundings, wherein mainly contain temperature variation, humidity variation, potential of hydrogen and salinity variation etc., cause country rock and prop generation physicochemical change, and then have influence on prop support capacity and stability of surrounding rock, even cause the Geotechnical Engineering accident, bring out disaster and take place.The present invention with reference to acquired experience in the external environmental suitability research work, has selected deep high temperature country rock environment to examine or check the long-term mechanical characteristic of country rock to temperature, humidity, chemical gradual change environment in conjunction with China's concrete deep engineering ground environment.Select+100 ℃ of high temperature and-20 ℃ of low temperature to carry out temperature gradual change test, (the simulation seasonal temperature changes in the different humidity cyclic test, deep Geotechnical Engineering environmental change, environment transfer etc.), phenomenons such as the rheology changes of properties of research rock and fluid seepage flow, sum up some typical rocks, prop is experiencing abominable temperature, change rule behind the humidity gradual change environmental test, find out engineering surrounding rock and prop worsening reason, improve deep wall rock and safeguard and construction technology, and set up country rock, prop is to temperature, humidity, the evaluation method of chemistry gradual change environmental suitability test.Therefore, learn the rheology of environmental observation rock in alternating temperature degree, change humidity and variation and be out of shape, catastrophic failure is appearred in deep wall rock destruction predict that crucial meaning is arranged.At present, in the rock mechanics experiment, the problem that rock mass rheology deformation test is existed is: the one, owing to only consider to differ bigger in the shop experiment condition with actual engineering specifications, test accuracy is poor; The 2nd, traditional rheology test unit can not carry out the gas-solid coupling; The 3rd, traditional rheology test unit is not considered many couplings such as temperature field, moisture field and chemical fields, can't provide actual valuable data for engineering.
Summary of the invention
In order to address the above problem, patent of the present invention provides triaxial compression rheological test system capable of simulating engineering geological environment, can accurately measure the rheology behavior of rock under many coupling conditions.
Technical scheme of the present invention is: triaxial compression rheological test system capable of simulating engineering geological environment, and it comprises:
The rock sample device in three cylinder bodies 7, requirement of explosion proof inflammable, explosive fluid that this cylinder body can satisfy.
These emulation geologic media three axial compression contracted flows become pilot system, and loading system relies on flow graph axle pressure σ is provided
1, adopt hydraulic pressure capsule 13 contact test specimens 3 to provide lateral pressure σ as the loading force source
2, confined pressure provides σ
3, fundamentally solved the friction problem of side direction surface of contact, realized true three load tests.
Lateral pressure σ
2Provide by hydraulic pressure or air pressure.
These emulation geologic media three axial compression contracted flows become chamber, and heating system adopts graphite resistance heater 11, solve the homogeneous heating problem, realize the rheological test of rock under hot conditions.
These emulation geologic media three axial compression contracted flows become pilot system, and humidification system adopts chemical humidifier 9, realize the rheological test of rock under different humidity, water chemistry condition.
Advantage of the present invention:
A, heating system adopt graphite resistance heater 11, solve the homogeneous heating problem, realize the rheological test of rock under hot conditions.
B, chemical humidification system adopt chemical humidifier 9, realize the rheological test of rock under different humidity, electrochemical conditions.
C, the following steel cushion block 8 of placement different-thickness between load bar 2 and three cylinder bodies 7 are to adapt to the test specimen of different size.
D, by chemical humidifier 9, different soda acids, salt steam are provided, realize the rheological test of rock under the different chemical condition.
E, the 13 built-in rhombus steel nettings of hydraulic pressure capsule, its effect is: improve hydraulic pressure capsule 13 withstand voltage, corrosion-resistant, bear high pressure.Friction is better eliminated in displacement and distortion in allowing among a small circle.
F, not only can select to provide confined pressure with gas (oxygen, nitrogen), liquid (oil, water), gas (methane, carbon dioxide), liquid (water of oil, different pH values) and the interactional environment of rock are provided, and can select to use not other liquid with the rock effect that confined pressure is provided, satisfy the needs of multiple load mode.
Description of drawings
Fig. 1 is that the imitative engineering geology environment three axial compression contracted flows of rock-soil material become the test unit structural representation.
Among Fig. 1, a kind of imitative engineering geology environment three axial compression contracted flows become test unit, by load bar 1 down, go up load bar 2, test specimen 3, foil gauge 4, seaming chuck 5, push-down head 6, three cylinder bodies 7, steel cushion block 8, chemical humidifier 9, heating arrangement 10, graphite hot water radiation wire 11, fluid tank 12, hydraulic pressure capsule 13, fiberglass capsul 14, temperature controller 15, wet control device 16, strainmeter 17, computing machine 18, printer 19 and control system 20 are formed.
Fig. 2 is that imitative engineering geology environment normal triaxial compression rheology pilot system of the present invention loads synoptic diagram.
Among Fig. 2, σ
1The axle pressure that provides for flow graph; σ
3The confined pressure that the loading force sources that produce for hydraulic pressure capsule expansion 13 contact test specimens 3 are provided.P
1, P
2The seepage pressure that provides for gas, liquid (methane, carbon dioxide or water).
Fig. 3 is that the true three axial compression contracted flows of imitative engineering geology environment of the present invention become pilot system loading synoptic diagram
Among Fig. 3, σ
1The axle pressure that provides for flow graph; σ
3The lateral pressure that the loading force source that produces for hydraulic pressure capsule 13 contact test specimens 3 is provided; Confined pressure σ
3Provide by liquid or gas.
Embodiment
Describe use-pattern of the present invention in detail below in conjunction with accompanying drawing.
As shown in Figure 1, a kind of emulation geologic media three axial compression contracted flows of the present invention become pilot system, apply dead load by the following load bar 1 that links to each other with push-down head 6,2 pairs of test specimen 3 gravity of last load bar of linking to each other with seaming chuck 5; Graphite hot water radiation wire 11 in the heating arrangement 10 is regulated temperature to the test specimen heating by temperature controller 15; Chemistry humidifier 9 is by wet control device 16 controls and the water that contains different salts, potential of hydrogen is provided; Fluid tank 12 provides methane or carbon dioxide for test specimen 3; Foil gauge 4 is connected the rheology distortion of measuring test specimen with strainmeter 17, gather, preserve data and print result by computing machine 18 and printer 19.
Claims (3)
1. triaxial compression rheological test system capable of simulating engineering geological environment is characterized in that:
Temperature controller 15 is controlled heating arrangement 10 and chemical humidifier 9 respectively with wet control device 16, thereby moisture field, temperature field and the chemical fields of finally controlling test specimen 3 change; Computing machine 18 connects printer 19, is used for regularly gathering or the real-time Transmission image data; Fluid tank 12 is connected with three cylinder bodies 7, is used for the coupling of gas and solid; Control system 20 connects computing machine 18, temperature controller 15, wet control device 16, strainmeter 17, is used for temperature, humidity and distortion loading speed and controls automatically.
2. fluid tank 12 according to claim 1 is characterized in that good pressure stabilization function.
3. three cylinder bodies 7 according to claim 1 is characterized in that explosion-proof, the high temperature resistant and anticorrosion cylinder body that three cylinder bodies, 7 usefulness fiberglass are made.
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| CN2010101941409A CN101886996A (en) | 2010-05-31 | 2010-05-31 | Triaxial compression rheological test system capable of simulating engineering geological environment |
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| CN2010101941409A CN101886996A (en) | 2010-05-31 | 2010-05-31 | Triaxial compression rheological test system capable of simulating engineering geological environment |
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| CN103257081A (en) * | 2013-04-28 | 2013-08-21 | 北京大学 | Method and device for recovering oil and gas reservoir rock mechanics underground in-situ model |
| CN103278614A (en) * | 2013-04-28 | 2013-09-04 | 北京大学 | Method and device for correcting dynamic and static rock mechanical parameters |
| CN103472191A (en) * | 2013-09-18 | 2013-12-25 | 三峡大学 | Airtight dynamic real-time liquid measuring instrument |
| CN103674679A (en) * | 2012-08-30 | 2014-03-26 | 中国石油化工股份有限公司 | Device and method for testing mechanical properties of fracture-vug type carbonate rock reservoir environment |
| CN103698493A (en) * | 2013-12-30 | 2014-04-02 | 中国科学院武汉岩土力学研究所 | Multiscale macroscopic-microscopic tester for rock and soil materials under multi-field coupling |
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| CN106596628A (en) * | 2016-12-06 | 2017-04-26 | 中国科学院武汉岩土力学研究所 | True triaxial test method capable of testing heat conductivity coefficient of rock |
| CN106932433A (en) * | 2017-02-28 | 2017-07-07 | 湖北工业大学 | The true triaxial device and method of thermal conductivity factor under test rock temperature and STRESS VARIATION |
| CN107036903A (en) * | 2017-05-04 | 2017-08-11 | 中国矿业大学(北京) | The axle of energetic disturbance low temperature rock three adds unloading rheometer and test method |
| CN107228794A (en) * | 2017-06-14 | 2017-10-03 | 哈尔滨工业大学深圳研究生院 | Drying and watering cycle unsaturated soil triaxial apparatus based on temperature control |
| CN107605519A (en) * | 2017-11-03 | 2018-01-19 | 湖南科技大学 | A kind of multifunctional monitoring early warning anchor pole |
| CN108181162A (en) * | 2018-01-09 | 2018-06-19 | 长江大学 | Thermal recovery cementing concrete ring triaxial deformation detector |
| CN109001184A (en) * | 2018-08-07 | 2018-12-14 | 中国海洋大学 | A kind of rotary scanning type element detection device based on LIBS technology |
| CN109187195A (en) * | 2018-10-30 | 2019-01-11 | 河南理工大学 | Rock mechanics experiment auxiliary device when a kind of controllable temperature gas-liquid dynamic ringing |
| CN109269878A (en) * | 2018-11-09 | 2019-01-25 | 山东科技大学 | Temperature and humidity control device and its application method in Rock Mechanics Test loading procedure |
| CN109269905A (en) * | 2018-11-02 | 2019-01-25 | 湖南科技大学 | A kind of rock test device and method simulated under high humidity acidic environment state |
| CN109738302A (en) * | 2019-01-10 | 2019-05-10 | 山东科技大学 | It is a kind of for rock staight scissors-seepage flow experimental rig and method |
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| CN102944478B (en) * | 2012-11-13 | 2015-06-17 | 河海大学 | Temperature-humidity-stress-chemical coupling test platform for porous dielectric material |
| CN103076225A (en) * | 2012-12-28 | 2013-05-01 | 长沙理工大学 | Triaxial test device for asphalt mixture and test method |
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Application publication date: 20101117 |