CN103424534A - Fractured rock heat-water-force three-field coupling large-scale model test device - Google Patents
Fractured rock heat-water-force three-field coupling large-scale model test device Download PDFInfo
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- CN103424534A CN103424534A CN2013103110719A CN201310311071A CN103424534A CN 103424534 A CN103424534 A CN 103424534A CN 2013103110719 A CN2013103110719 A CN 2013103110719A CN 201310311071 A CN201310311071 A CN 201310311071A CN 103424534 A CN103424534 A CN 103424534A
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Abstract
The invention discloses a fractured rock heat-water-force three-field coupling large-scale model test device which comprises a fractured rock model, a model test box component, a feed system and a measurement monitoring device, wherein the fractured rock model is formed by a plurality of rock samples; the model test component is used for isolating the fractured rock model from external environment so as to enable temperature and seepage inside the fractured rock model not to be affected; the feed system is used for providing heat, water and force for the fractured rock model so as to perform a heat-water-force three-field coupling test on the fractured rock model; the measurement monitoring device is used for collecting and processing various test data. According to the model test device provided by the invention, because the large-scale (meter level) fractured rock formed by rock samples is regarded as a model test body, the accurate simulation to the spot fractured rock heat-water-force three-field coupling test is achieved maximally, and in addition, the device is simple in structure, convenient for assembly, and low in implementation cost, and can be widely used in model test study on large-scale fractured rock.
Description
Technical field
The present invention relates to the experimental study to the crack rock in underground and Geotechnical Engineering field, be specifically related to a kind of crack rock heat-water-tri-of Li coupling large scale test device.
Background technology
It is great and the be difficult to solution problems in one of countries in the world that the nuke rubbish (high-level waste) that nuclear energy power generation produces is disposed always.The dark geological disposal of high-level waste is method of disposal recognized in the world; it be take radioactive nuclide containing as content, retardance migration be core; take multibarrier as Main Means, take the Important Project that more than thousand and even 10000 years, public health and environmental protection are Security Target.High level radioactive waste repository is arranged in the rock stratum, deep more, and disposing the storehouse country rock becomes the natural cover for defense that prevents nuclein migration.High-level waste generates heat because the nucleic decay can heat up in long-term storage process, dispose the storehouse country rock and not only be subject to gravity stress and tectonic stress effect, inside also is distributed with various joints and crack and has seepage action of ground water, and the migration of nucleic depends on flowing of underground water, migration and the heat-water in crack rock-tri-of the Li coupling of visible nucleic are closely related.In addition, since new century, the exploitation of shale gas becomes the forward position of new energy development, and the natural gas extraction in shale is achieved by the underground gas storage layer, injecting water under high pressure splitting rock stratum, its recovery process also with in crack rock heat-water-tri-of Li coupling is relevant.
Due to on-the-spot crack rock heat-water-tri-of Li coupling test expense is huge, performance difficulty, and conventional indoor adopts small size (centimetre-sized) rock sample there is a big difference with crack rock, so large scale (meter level) model test becomes the necessary means of crack rock heat-water under three coupling conditions of research-force coupling action use rule.
Summary of the invention
For overcoming above-mentioned the deficiencies in the prior art, the invention provides a kind of crack rock heat-water-tri-of Li coupling large scale test device, it, maximizes and has realized the accurate simulation to on-the-spot crack rock heat-water-tri-coupling tests of Li as the model test body by large scale (meter level) crack rock using rock sample formation; In addition, this apparatus structure is simple, easy to assembly, implementation cost is low, can be widely used in the model investigation to the large scale crack rock.
For realizing above-mentioned purpose of the present invention, crack rock heat-water of the present invention-tri-of Li coupling large scale test device comprises: the crack rock model formed by a plurality of rock sample assemblings; For crack rock model and external environment condition are isolated so that the model test box assembly that its temperature and interior seepage flow are immune; For to the crack rock model, providing the feed system of heat, water, power, in order to the crack strata model is carried out to heat-water-tri-of Li coupling test; And the measurement supervisory system that is used for collecting and processing every test figure.
Preferably, described model test box assembly comprises: model test box, and its upside is provided with the penstock installation portion, in order to be installed into water conduit, downside is provided with the water output duct installation portion, in order to water output duct is installed, both sides are provided with power transmission assembly installation portion; And be laid in water barrier and the thermofin around model test box, in order to isolated heat loss, prevent the crevice water seepage simultaneously.
Particularly, described water barrier and described thermofin consist of splash guard and thermal insulation board respectively, and the casing coupling that can form with model test box is coincide, and also is convenient to the assembling to whole model test box assembly.
Preferably, described feed system comprises: be used to described crack rock model that the heat source temperature control system of heat is provided; Be used to described crack rock model that the water system of the water yield is provided; And be used to described crack rock model that the loading system of load is provided.
Preferably, described loading system comprises: model loads case; Be arranged on the force transmission mechanism that model loads the case sidepiece, with thinking that the crack rock model provides load; And be arranged on model loading case inner bottom part for supporting some bases of described model test box assembly.
Particularly, described force transmission mechanism comprises: the first transmission rod; The first bearing plate be connected with the first transmission rod one end; A plurality of the second transmission rods that one end is connected with the first bearing plate; A plurality of the second bearing plates that connect the second transmission rod other end; And connect and for supporting at least one support of described the first transmission rod.
Preferably, described heat source temperature control system comprises the thermal source of being made by the silicon rubber electric hot plate, and the temperature control assembly that includes temperature sensor, temperature control instrument and A.C. contactor; Described water system comprises constant flow pump, diversion conduit and water tank.
Preferably, described measurement supervisory system comprises: be arranged on a plurality of temperature sensors of described crack rock model inside, a plurality of flowmeter counter and a plurality of displacement transducer, for acquisition and processing crack rock model various performance parameters in test; And be arranged on described feed system for monitoring the load transducer of external load.
In addition, form the described rock sample of crack rock model of the present invention, between the crack formed between its every adjacent two, be filled with normal sand, so that the simulation test of crack strata model more is tending towards to actual.
Preferably, described model test box assembly is made by stainless steel, guarantees that the model test box assembly has enough rigidity, to maintain the stable of crack rock model in experimentation.
Compared with prior art, the present invention has following advantage:
1) model test apparatus of the present invention is by forming large scale crack rock model by a plurality of rock sample assemblings, and can and can transmit under the protection of model test box assembly of external force and carry out heat-water-tri-of Li coupling test in heat insulation, waterproof, can test large scale (meter level) crack rock progressive die type, realized the accurate simulation to on-the-spot crack rock with maximization, made up to a great extent the deficiency of indoor small-size sample, strengthened the representativeness of indoor strata model test simultaneously;
2) the present invention is used for collecting and processing the measurement supervising device of every test figure by installation, can conveniently test interaction and the Changing Pattern of large scale crack rock three of temperature, seepage flow and stress under heat-water-tri-of Li coupling condition;
3) feed system of the present invention can be conveniently for the crack rock model provides long equilibrium temperature, the load pressure of continual current and various magnitudes is provided, guarantee carrying out smoothly of crack rock model heat-water-tri-coupling tests of Li in test;
4) model test apparatus of the present invention is simple in structure, easy to assembly, and the expense that implements is lower, can be widely used in the model investigation to the large scale crack rock;
5) the present invention can be used as and solves test unit relevant with crack rock heat-water-tri-of Li coupling in high level radioactive waste repository or other underground workss and technical support is provided.
Below in conjunction with accompanying drawing, the present invention is further detailed explanation.
The accompanying drawing explanation
Fig. 1 is the structural representation of model test apparatus of the present invention;
Fig. 2 is three coupling test model system composition diagrams of crack rock model in the present invention.
Description of reference numerals: 1-crack rock model; The 11-rock sample; 12 cracks; 2-model test box assembly; The 21-model test box; 211-penstock installation portion; 212-water output duct installation portion; 213-power transmission assembly installation portion; The 22-water barrier; The 23-thermofin; 3-measures supervising device; The 31-load transducer; 4-heat source temperature control system; The 41-thermal source; 42-temperature control assembly; The 5-water system; 51-enters water tank; 52-goes out water tank; The 53-constant flow pump; The 54-flowmeter; The 55-penstock; The 56-water output duct; The 6-loading system; 61 models load case; The 62-force transmission mechanism; 621-the first transmission rod; 622-the first bearing plate; 623-the second transmission rod; 624-the second bearing plate; The 625-support; The 63-base; 7-controls computing machine.
Embodiment
Below describe embodiments of the invention in detail, the example of described embodiment is shown in the drawings, in order to the present invention is made to clear, complete explanation.It is emphasized that the accompanying drawing explanation is schematically for the present invention, only for explaining the present invention, and can not be interpreted as limitation of the present invention; In addition, in the present invention from start to finish identical or similar label mean same or similar element, term used " connection ", " being connected ", " installation " etc. should be done broad understanding, for example, can be to be fixedly connected with, can be also to removably connect, or one connects; Can be mechanical connection, can be also to be electrically connected to; Can be direct connection, can be also indirectly to connect by intermediate medium, can be even the internal communication of two elements.For the ordinary skill in the art, can understand as the case may be above-mentioned term implication in the present invention.
As shown in Figure 1 and Figure 2, crack rock heat-water of the present invention-tri-of Li coupling large scale test device comprises: crack rock model 1, and it is formed by a plurality of rock sample 11 assemblings; Crack rock model 1 is placed in the model test box assembly 2 that itself and external environment condition can be kept apart, and this model test box assembly 2 can guarantee that the temperature of crack rock model 1 and inner seepage flow are not subject to external environment influence; With model test box assembly 2, be connected with for the feed system of heat, water, power is provided to crack rock model 1, in order to crack strata model 1 is carried out to heat-water-tri-of Li coupling test; In addition, on crack rock model 1, model test box assembly 2 and feed system, also be equipped with for collecting and process the measurement supervising device 3 of every test figure.
Particularly, model test box assembly 2 comprises: model test box 21, its upside is provided with penstock installation portion 211, downside is provided with water output duct installation portion 212, in order to be connected with water output duct 56 with penstock 55 respectively, both sides are provided with power transmission assembly installation portion 213, be laid with water barrier 22 and thermofin 23 around model test box 21, prevent heat loss and 12, the crack seepage of crack rock model 1, for playing in test better waterproof, effect of heat insulation, water barrier 22 and thermofin 23 can preferably consist of splash guard and thermal insulation board respectively.Model test box 21 is preferably made by stainless steel, guarantees that model test box 21 has enough rigidity, to maintain the stable of crack rock model 1 in experimentation.
Feed system comprises: be used to crack rock model 1 that the heat source temperature control system 4 of heat is provided, be used to crack rock model 1 that the water system 5 of the water yield is provided and be used to crack rock model 1 to provide and carry the loading system 6 of pressing.
Particularly, loading system 6 comprises: model loads case 61, loads case 61 sidepieces at model force transmission mechanism 62 is installed, and loads case 61 inner bottom parts at model the some bases 63 for bolster model chamber assembly 2 are installed.Model test box assembly 2 and inner crack rock model 1 are placed in model and load in case 61, the hydraulic jack that utilizes model to load case 61 both sides can be loaded crack strata model 1, the maximum thrust of single hydraulic jack is generally 500kN, and loading procedure can be preferably by electro-hydraulic servo and computer control.Force transmission mechanism 62 preferably includes: the first transmission rod 621, be connected with the first bearing plate 622 with the first transmission rod 621 1 ends, a plurality of the second transmission rods 623 that one end is connected with the first bearing plate 622, at least one support 625 that is connected with a plurality of the second bearing plates 624 and is connected with the first transmission rod 621 with second transmission rod 623 other ends, for supporting the first transmission rod 621.
Heat source temperature control system 4 comprises: thermal source 41 and temperature control assembly 42, thermal source 41 can adopt the silicon rubber electric hot plate that water resistance is good, can work under wet environment for a long time, directly is laid in during laying and needs crack rock model 1 surface at heating position.Temperature control assembly 2 completes automatically by temperature sensor, temperature control instrument and A.C. contactor, when reaching default, crack rock model 1 temperature can lower the temperature by auto-breaking, can connect fast electricity and heat up when the temperature lower than setting, thereby make crack rock model 1 keep in a long time relative equilibrium temperature.
Measuring supervising device 3 comprises: be arranged on a plurality of temperature sensors of crack rock model 1 inside, a plurality of flowmeter counter and a plurality of displacement transducer (not shown) and be arranged on the load transducer 31 for monitoring external load on feed system 5, temperature sensor, flowmeter counter and displacement transducer can be monitored the variation of crack rock model 1 internal temperature, flow rate of water flow and stress, load transducer 31 can be arranged on the first transmission rod 621 of force transmission mechanism 62, in order to the load of the described force transmission mechanism 62 of transmitting scriptures is monitored; In addition, can also adopt strain acquirement instrument, multi-channel digital registering instrument, control computing machine 7 etc. to gather, record and analyze data.
In test can simulate the variation of actual rock cranny aperture for guaranteeing model test apparatus of the present invention, make the data that monitor more accurate, can fill the normal sand of certain grating and density as fissuted medium in the crack 12 of every 11 formation of adjacent two rock samples.
The test principle of crack rock heat-water of the present invention-tri-of Li coupling large scale test device can simply be summarized as follows:
The certain grating of the interior filling in crack 12 formed according to simple rule at large scale crack rock model 1 and the normal sand of density, as fissuted medium, adopt 23 pairs of whole crack rock models 1 of fluid-tight water barrier 22 and thermal insulation separation thermosphere to be sealed.Set initial temperature, seepage flow and the stress field of crack rock model 1 by this test unit, but thermal source, right side bearing load effect can be set in crack rock model 1 left side, crack rock model 1 left side and bottom are made as to the displacement fixed boundary, crack rock model 1 upper and lower is the porous border, current can be in crack 12 interior flowing.During test, external load is by force transmission mechanism 62 extruding crack rock models 1, crack rock model 1 internal stress field is changed, crack 12 apertures in crack rock model 1 will have closure in various degree, in crack 12, the density of back-up sand can reduce, cause its perviousness to reduce, then affect the speed of seepage flow in crack, and finally make temperature field and seepage field in crack rock model 1 change.By above-mentioned experimental principle, can in crack rock model 1, realize the coupling of heat-water-tri-of Li.
From above-described embodiment, be not difficult to find out, the technical scheme of crack rock heat-water of the present invention-tri-of Li coupling large scale test device is non-obvious with respect to those of ordinary skills, there is outstanding substantive distinguishing features, in addition, this test unit can bring remarkable beneficial effect with respect to prior art: model test apparatus of the present invention is by forming large scale crack rock model 1 by a plurality of rock sample 11 assemblings, and can be heat insulation, waterproof and can transmit under the protection of model test box assembly 2 of external force and carry out heat-water-tri-of Li coupling test, can be to 1 test of large scale (meter level) crack rock progressive die type, realized the accurate simulation to on-the-spot crack rock with maximization, made up to a great extent the deficiency of indoor small-size sample simultaneously, strengthened the representativeness of indoor strata model test, be used for collecting and processing the measurement supervising device 3 of every test figure by installation, can conveniently test interaction and the Changing Pattern of large scale crack rock three of temperature, seepage flow and stress under heat-water-tri-of Li coupling condition, feed system of the present invention can be conveniently for the crack rock model provides long equilibrium temperature, the load pressure of continual current and various magnitudes is provided, guarantee carrying out smoothly of crack rock model 1 heat-tri-coupling tests of water-Li in test, in addition, model test apparatus of the present invention is simple in structure, easy to assembly, and the expense that implements is lower, can be widely used in the model investigation to the large scale crack rock, the present invention can also be as solving test unit relevant with crack rock heat-water-tri-of Li coupling in high level radioactive waste repository or other underground workss and technical support being provided.
It should be noted that; although above the present invention is explained in detail; but be not limited to this; the content that those skilled in the art can put down in writing according to the present invention is modified; therefore, all various modifications of carrying out according to the content of the present invention's record all should be understood to fall into protection scope of the present invention.
Claims (10)
1. crack rock heat-water-tri-of Li coupling large scale test device, is characterized in that, comprising:
The crack rock model (1) formed by a plurality of rock samples (11) assembling;
For crack rock model (1) and external environment condition are isolated so that the model test box assembly (2) that its internal temperature and seepage flow are immune;
For to crack rock model (1), providing the feed system of heat, water, power, in order to crack strata model (1) is carried out to heat-water-tri-of Li coupling test; And
Be used for collecting and processing the measurement supervising device (3) of every test figure.
2. device according to claim 1, is characterized in that, described model test box assembly (2) comprising:
Model test box (21), its upside is provided with penstock installation portion (211), and downside is provided with water output duct installation portion (212), and both sides are provided with power transmission assembly installation portion (213); And
Be laid in model test box (21) water barrier (22) and thermofin (23) on every side.
3. device according to claim 2, is characterized in that, described water barrier (22) and described thermofin (23) consist of splash guard and thermal insulation board respectively.
4. device according to claim 1, is characterized in that, described feed system comprises:
Be used to described crack rock model (1) that the heat source temperature control system (4) of heat is provided;
Be used to described crack rock model (1) that the water system (5) of the water yield is provided; And
Be used to described crack rock model (1) that the loading system (6) of load is provided.
5. device according to claim 4, is characterized in that, described loading system (6) comprising:
Model loads case (61);
Be arranged on the force transmission mechanism (62) that model loads case (61) sidepiece; And
Be arranged on model and load case (61) inner bottom part for supporting some bases (63) of described model test box assembly (2).
6. device according to claim 5, is characterized in that, described force transmission mechanism (62) comprising:
The first transmission rod (621);
The first bearing plate (622) be connected with the first transmission rod (621) one ends;
A plurality of the second transmission rods (623) that one end is connected with the first bearing plate (622);
A plurality of the second bearing plates (624) that connect the second transmission rod (623) other end; And
Connect and for supporting at least one support (625) of described the first transmission rod (621).
7. device according to claim 4, is characterized in that, described heat source temperature control system (4) comprises the thermal source (41) of being made by the silicon rubber electric hot plate, and the temperature control assembly (42) that includes temperature sensor, temperature control instrument and A.C. contactor; Described water system (5) comprises constant flow pump (53), diversion conduit and water tank.
8. device according to claim 1, is characterized in that, described measurement supervising device (3) comprising:
Be arranged on described crack rock model (1) inner a plurality of temperature sensors, a plurality of flowmeter counter and a plurality of displacement transducer; And
Be arranged on the upper load transducer (31) for monitoring external load of described feed system (5).
9. device according to claim 1, is characterized in that, in the crack (12) formed between every adjacent two described rock samples (11), is filled with normal sand.
10. according to the described device of claim 1～9 any one, it is characterized in that, described model test box assembly (2) is made by stainless steel.
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| CN103759962A (en) * | 2014-01-24 | 2014-04-30 | 北京交通大学 | Large tunnel analog loading experimental platform equipment |
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| CN105301221A (en) * | 2015-09-21 | 2016-02-03 | 中国神华能源股份有限公司 | Test model for observing rock stratum surface displacement and manufacturing method of test model |
| CN105588774A (en) * | 2016-01-19 | 2016-05-18 | 河北工程大学 | Model test system for materials of surrounding rock and lining structures of high-ground-temperature diversion tunnel |
| CN106840727A (en) * | 2017-02-21 | 2017-06-13 | 山东科技大学 | Seam Mining stress field seepage field temperature field coupling test system and method |
| CN106872668A (en) * | 2017-03-03 | 2017-06-20 | 中国矿业大学(北京) | Temperature seepage stress THM coupling similar test method |
| CN108152473A (en) * | 2017-12-10 | 2018-06-12 | 北京工业大学 | A kind of rock fracture pilot system of water-ice-rock coupling mechanism |
| CN108645708A (en) * | 2018-05-09 | 2018-10-12 | 中国矿业大学 | A kind of water-couple of force for three-dimensional fracture rock sample closes loading device and loading method |
| CN108982804A (en) * | 2018-05-27 | 2018-12-11 | 西安科技大学 | Mine filling temperature, seepage flow, stress THM coupling similar test device and method |
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| CN115359706A (en) * | 2022-08-30 | 2022-11-18 | 中国电建集团成都勘测设计研究院有限公司 | Model system for simulating complex geology |
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| CN103792104A (en) * | 2014-01-24 | 2014-05-14 | 中铁隧道集团有限公司 | Tunnel analog loading experimental platform |
| CN103759962A (en) * | 2014-01-24 | 2014-04-30 | 北京交通大学 | Large tunnel analog loading experimental platform equipment |
| CN103759962B (en) * | 2014-01-24 | 2016-09-14 | 北京交通大学 | A kind of large tunnel simulation loading experimental platform equipment |
| CN105301221B (en) * | 2015-09-21 | 2017-06-16 | 中国神华能源股份有限公司 | A kind of test model for observing rock layer surface displacement and preparation method thereof |
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| CN105588774A (en) * | 2016-01-19 | 2016-05-18 | 河北工程大学 | Model test system for materials of surrounding rock and lining structures of high-ground-temperature diversion tunnel |
| CN106840727A (en) * | 2017-02-21 | 2017-06-13 | 山东科技大学 | Seam Mining stress field seepage field temperature field coupling test system and method |
| CN106872668A (en) * | 2017-03-03 | 2017-06-20 | 中国矿业大学(北京) | Temperature seepage stress THM coupling similar test method |
| CN108152473A (en) * | 2017-12-10 | 2018-06-12 | 北京工业大学 | A kind of rock fracture pilot system of water-ice-rock coupling mechanism |
| CN108645708A (en) * | 2018-05-09 | 2018-10-12 | 中国矿业大学 | A kind of water-couple of force for three-dimensional fracture rock sample closes loading device and loading method |
| CN108645708B (en) * | 2018-05-09 | 2020-06-26 | 中国矿业大学 | Water-force coupling loading device and loading method for three-dimensional fractured rock sample |
| CN108982804A (en) * | 2018-05-27 | 2018-12-11 | 西安科技大学 | Mine filling temperature, seepage flow, stress THM coupling similar test device and method |
| CN109826243A (en) * | 2018-12-21 | 2019-05-31 | 中国地质科学院地质力学研究所 | Rock mass test test macro and method under a kind of three water coincidences effect |
| CN109826243B (en) * | 2018-12-21 | 2023-09-26 | 中国地质科学院地质力学研究所 | Rock mass test system and method under tri-water coupling effect |
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| CN110108854A (en) * | 2019-05-13 | 2019-08-09 | 安徽理工大学 | A kind of experimental provision for simulating the different each rock stratum flow of permeability, flow velocity relation |
| CN110374585A (en) * | 2019-08-08 | 2019-10-25 | 吉林大学 | It is a kind of to simulate the experimental provision and method that mud is spread in oil shale fracturing stratum |
| CN111879814A (en) * | 2020-07-31 | 2020-11-03 | 武汉大学 | Experimental device and system for water-heat transfer mechanism of fractured rock mass |
| CN111879814B (en) * | 2020-07-31 | 2023-08-22 | 武汉大学 | Fracture rock mass hydrothermal transmission mechanism experimental device and system |
| CN113406306A (en) * | 2021-07-02 | 2021-09-17 | 长沙理工大学 | Fracture simulation device for rock-soil moisture, heat and force coupling and test method thereof |
| CN113406306B (en) * | 2021-07-02 | 2023-12-22 | 长沙理工大学 | Fracture simulation device with rock-soil wet, heat and force coupling function and test method thereof |
| CN115359706A (en) * | 2022-08-30 | 2022-11-18 | 中国电建集团成都勘测设计研究院有限公司 | Model system for simulating complex geology |
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