CN108844871A - More infra-red radiation observation devices and method - Google Patents
More infra-red radiation observation devices and method Download PDFInfo
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- CN108844871A CN108844871A CN201810199495.3A CN201810199495A CN108844871A CN 108844871 A CN108844871 A CN 108844871A CN 201810199495 A CN201810199495 A CN 201810199495A CN 108844871 A CN108844871 A CN 108844871A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N2015/0846—Investigating permeability, pore-volume, or surface area of porous materials by use of radiation, e.g. transmitted or reflected light
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/025—Geometry of the test
- G01N2203/0256—Triaxial, i.e. the forces being applied along three normal axes of the specimen
Abstract
The invention discloses a kind of more infra-red radiation observation devices and methods, cabinet including containing sample, infrared observation window is equipped with before cabinet, box house passes through lateral loading device, axial loading device and precedence constraints device form the accommodating chamber for limiting sample, it realizes and the biaxial loadings and three-dimensional of sample is constrained, thermal infrared imager is set before infrared observation window, thermal infrared imager is towards accommodating chamber, acoustic emission probe and pressure are housed on lateral loading device, displacement sensor, axial loading device is equipped with fluid channel and leakage hole, precedence constraints device includes infrared observation window sealing block with before, rear side fixed block.The present invention solves the problems, such as directly observe specimen surface infra-red radiation information in traditional penetration experiment, can be realized sample is added and (is unloaded) carry during more physical quantitys such as ess-strain, permeability, sound emission and infra-red radiation Simultaneous Monitoring, the infra-red radiation Response Mechanism of coal petrography damage development can be adopted for research and permeability characterizes and provide experiment condition.
Description
Technical field
The present invention relates to technical field of coal exploitation, and in particular to more infra-red radiation observation devices of one kind and method.
Background technique
The lesion ruptures and permeable sandstone of rock are one of the main academic propositions in rock mechanics and engineering field, and
General character underlying issue in the rock engineerings such as mining mineral resource.In recent years, water resource utility model disadvantage caused by traditional coal mining
End is by more and more big environmental protection pressure and public opinion pressure, wherein the water protection mining being concerned, needs from mistake
The content based on rock mass deformation and cranny development control is gone, the height controlled mining rock damage and permeability is developed to
Degree.If there is the problems such as damage and infiltrative quantitatively evaluating inaccuracy or false judgment, it will cause mine water resource to be lost,
The immeasurable disastrous effect such as water bursting in mine and mining area ecological environment deterioration can even be caused.This is to adopting coal petrography bulk damage and infiltration
Property evolution basic theory and application study propose new challenge.
Another aspect coal petrography infra-red radiation information in surface during lesion ruptures can change.Infra-red radiation is as one
The new monitoring technology of kind, has been applied to forecast damage of rock and percolating water process, or even as natural calamities such as earthquake, landslides
With one of the means of the mine disasters prediction such as water bursting in mine, therefore, infra-red radiation Response Mechanism that coal petrography damage develops and
Permeability study on characterization with engineering field will there is very big development to dive in water protection mining or even modern rock mechanics
Power.
Underground coal petrography is the state in three received strength before by exploitation disturbance, but existing coal and rock infra-red radiation is seen
Detection experiment apparatus carries out more under the conditions of being directed to uniaxial loading, and existing infrared observation experimental provision cannot achieve to sample
The simultaneous observation of permeability and infra-red radiation information.And during adopting off-load coal petrography damage development, coal petrography surface infra-red radiation
Have unique response modes to the differentiation of its internal penetration, it is therefore necessary to research and develop a set of experimental provision to the damage of coal and rock and
Permeability coevolution rule and its infra-red radiation characterization are studied.
Summary of the invention
The technical issues of solution：The three received strength shape of coal and rock cannot be simulated for existing infra-red radiation observation device
State, and the problems such as can not achieve the simultaneous observation of permeability and infra-red radiation, a kind of more infra-red radiation observation devices are proposed,
May be implemented to the constraint of the biaxial loadings and three-dimensional of sample, and can synchronize to add and (unload) carry during the stress of sample answer
More physical quantitys such as change, permeability, sound emission and infra-red radiation are acquired in real time, adopt coal petrography bulk damage and permeability for research
Evolution and infra-red radiation characterization provide basic data.
Technical solution：A kind of more infra-red radiation observation devices, including：
Cabinet, the bottom of box be equipped with water-collecting tray, top open wide, left side be equipped with preformed hole, before be equipped with infrared observation window,
Infrared observation window is closed by sealing block；
Lateral loading device, including lateral oil cylinder, lateral pressure head, left side fixed block, right side fixed block, pressure sensor,
Displacement sensor and the mobile bracket of displacement sensor, lateral oil cylinder are connected by preformed hole with lateral pressure head, lateral pressure head and a left side
Side fixed block is bolted, and pressure sensor is mounted on the right side of cabinet on steel plate, and right side fixed block and pressure sensor are logical
It crosses and is bolted, left side fixed block and right side fixed block form the sidewise restraint to sample, left side fixed block and right side fixed block
On be also equipped with acoustic emission probe, displacement sensor is arranged on lateral oil cylinder, and it is solid that the mobile bracket of displacement sensor is mounted on left side
Determine on block；
Axial loading device, including axial pressure head and bottom cushion block, axial pressure head and bottom cushion block form axial direction to sample
Constraint, axial pressure head are equipped with fluid channel, and bottom cushion block is equipped with leakage hole；
Precedence constraints device, including infrared observation window sealing block and forward and backward side fixed block, it is infrared observation window sealing block, preceding
Side fixed block and rear side fixed block form precedence constraints to sample；
Lateral loading device, axial loading device and precedence constraints device form the accommodating chamber for limiting sample in cabinet；
Thermal infrared imager is set before infrared observation window, and thermal infrared imager is towards accommodating chamber.
Further, cabinet is bolted by high-strength steel sheet and is surrounded, and water-collecting tray and the bottom of box are solid by bolt
Fixed connection.
Further, left side fixed block and right side fixed block are equipped with the hole slot for installing acoustic emission probe, and sound emission is visited
Head is mounted in hole slot by acoustic emission probe fixture.
Further, water-collecting tray is equipped with water outlet.
A kind of more infra-red radiation observation methods, include the following steps：
Step 1：Assemble experimental provision, left side fixed block, the right side fixed block, front side that selection matches with specimen size
Acoustic emission probe is installed to left side fixed block and right side fixed block, fixes thermal infrared imager by fixed block and rear side fixed block,
Experimental provision is put on MTS universal testing machine and is fixed, pilot scale study system；
Step 2：Sample is sealed using polyethylene film, ensuring on the basis of not influencing testing permeability can
It observes sample (13) surface infra-red radiation information, realizes see synchronous with surface infra-red radiation information to sample testing permeability
It surveys；
Step 3：Sample in the step 2 is placed into cabinet and is fixed, mobile axial direction pressure head and lateral pressure head
It is close to sample but non-applied force, guarantees that sample is in three-dimensional restrained condition；
Step 4：Axially and laterally biaxial loadings are carried out to sample, sample is made to be in stress of primary rock level；
Step 5：It keeps sample to be in stress of primary rock level, removes cabinet infrared observation window sealing block and front side fixed block,
Simulate coal and rock digging process；
Step 6：Stress path is carried according to designed plus (unloading), axially and laterally biaxial loadings are carried out to sample；
Step 7：Data are carried out to sample by pressure sensor, displacement sensor, acoustic emission probe and thermal infrared imager
Acquisition；
Step 8：Percolating medium is entered into sample by the fluid channel inside axial pressure head, test and is recorded plus (unloading)
The permeability variation of sample during load；
Step 9：The infra-red radiation of coal petrography Unloading Damage of Soft Soil evolution is adopted in the data acquired in analysis experimentation, research
Response Mechanism and its infiltrative characterization.
Beneficial effect：The present invention has the following advantages that compared to existing infra-red radiation observation device：1, difference can be passed through
Plus (unloading) carry assembled scheme and simulate different mining induced stress paths, can realize that biaxial loadings and three-dimensional be constrained and be monitored to sample
The ess-strain of sample；2, design has fluid channel in the axial pressure head of device, can to add and (unload) carry during sample infiltration
Permeability is tested；3, the front side steel plate design of device has infrared observation window, is sealed using sealing block to it, when infrared
Observation window can constrain sample when sealing, and after sealing block and preceding fixed block are all removed, can simulate the excavation of coal and rock,
Thermal infrared imager can add and (unload) surface temperature variation during load to be observed on sample by infrared observation window simultaneously；4, exist
Be mounted on acoustic emission probe in the fixed cushion block of the left and right side of device, can the rupture information to sample acquired in real time.This hair
Bright realize adds and (unloads) more physical quantitys such as ess-strain, permeability, sound emission and infra-red radiation of sample in load experiment to three axis
Simultaneous Monitoring.
Detailed description of the invention
Fig. 1 is box structure diagram of the present invention；
Fig. 2 is front view of the present invention；
Fig. 3 is top view of the present invention；
Fig. 4 is side view of the present invention；
Fig. 5 is fixed block acoustic emission probe structural schematic diagram；
Wherein：1- cabinet, the side 2- are to oil cylinder, 3- displacement sensor, 4- infrared observation window, 5- axial direction pressure head, the side 6- to pressure
Head, the mobile bracket of fixed block, 8- displacement sensor on the left of 7-, fixed block on the right side of 9-, 10- pressure sensor, the bottom 11- cushion block,
12- water-collecting tray, 13- sample, 14- acoustic emission probe, 15- fluid channel, 16- water outlet, 17- leakage hole, 18- infrared observation
Fixed block, 20- rear side fixed block, 21- acoustic emission probe fixture on front side of window sealing block, 19-.
Specific embodiment
The more infra-red radiations observation device specific embodiment is as follows：
The present invention will be further explained below with reference to the attached drawings.
As shown in the picture, a kind of more infra-red radiation observation devices, which is characterized in that including：
Cabinet 1, cabinet 1 is bolted by high-strength steel sheet to be surrounded, and 1 bottom of cabinet is equipped with water-collecting tray 12, water-collecting tray
12 are bolted to connection with 1 bottom of cabinet, and water-collecting tray 12 is equipped with water outlet 17, and top of the box is opened wide, and left side is equipped with pre-
Box out, before be equipped with infrared observation window 4, infrared observation window 4 is closed by sealing block 18；
Lateral loading device, including lateral oil cylinder 2, lateral pressure head 6, left side fixed block 7, right side fixed block 9, pressure sensing
The mobile bracket 8 of device 10, displacement sensor 3 and displacement sensor, lateral oil cylinder 2 are connected by preformed hole with lateral pressure head 6, laterally
Pressure head 6 is bolted with left side fixed block 7, and pressure sensor 10 is mounted on 1 right side steel plate of cabinet, right side fixed block 9
Be bolted with pressure sensor 10, left side fixed block 7 and right side fixed block 9 formed to 13 two sides of sample it is lateral about
Beam, left side fixed block 7 and right side fixed block 9 are equipped with the hole slot for installing acoustic emission probe 14, and acoustic emission probe 14 passes through sound
Transmitting probe fixture 21 is mounted in hole slot, and displacement sensor 3 is arranged on lateral oil cylinder 2, and the mobile bracket 8 of displacement sensor is pacified
On left side fixed block 7；
Axial loading device, including axial pressure head 5 and bottom cushion block 11, axial pressure head 5 are arranged above sample 13, bottom
Cushion block 11 is arranged below sample 13, forms the axial constraint of up and down direction to sample 13 jointly, and axial pressure head 5 is logical equipped with fluid
Road 15, bottom cushion block 11 are equipped with leakage hole 17；
Precedence constraints device, including infrared observation window sealing block 18, front side fixed block 19 and rear side fixed block 20, front side is solid
Determine block 19 to be arranged between infrared observation window sealing block 18 and sample 13, the setting of front side fixed block 19 is in 13 front of sample, rear side
Fixed block 20 is arranged at 13 rear of sample, forms front-rear direction constraint to sample 13 jointly；
Lateral loading device, axial loading device and precedence constraints device form the receiving for limiting sample 13 in cabinet 1
Chamber；
Thermal infrared imager is set before infrared observation window 14, and thermal infrared imager is towards accommodating chamber.
A kind of more infra-red radiation observation methods of the invention, include the following steps：
Step 1：Assemble experimental provision, left side fixed block 7 that selection matches with 13 size of sample, right side fixed block 9,
Acoustic emission probe 14 is installed to left side fixed block 7 and right side fixed block 9 by front side fixed block 19 and rear side fixed block 20, fixed
Experimental provision is put on MTS universal testing machine and is fixed by good thermal infrared imager, pilot scale study system；
Step 2：Sample 13 is sealed using polyethylene film；
Step 3：Sample 13 in the step 2 is placed into cabinet 1 and fixed, mobile axial direction pressure head 5 and lateral
Pressure head 6 is close to sample but non-applied force, guarantees that sample 13 is in three-dimensional restrained condition；
Step 4：Axially and laterally biaxial loadings are carried out to sample 13, sample 13 is made to be in stress of primary rock level；
Step 5：It keeps sample 13 to be in stress of primary rock level, removes 1 sealing block 18 of cabinet and front side fixed block 19, mould
Quasi- coal and rock digging process；
Step 6：Stress path is carried according to designed plus (unloading), axially and laterally biaxial loadings are carried out to sample 13；
Step 7：Sample 13 is counted by pressure sensor, displacement sensor, acoustic emission probe and thermal infrared imager
According to acquisition；
Step 8：Percolating medium is passed through into the fluid channel 15 inside axial pressure head 5 and enters sample 13, tests and records and add
The permeability variation of sample during (unloading) carries；
Step 9：The infra-red radiation of coal petrography Unloading Damage of Soft Soil evolution is adopted in the data acquired in analysis experimentation, research
Response Mechanism and its infiltrative characterization.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Within the technical scope disclosed by the invention, any changes or substitutions that can be easily thought of by those skilled in the art, should all contain
Within protection scope of the present invention, therefore, protection scope of the present invention should be with protection scope defined by claim for lid
Subject to.
Claims (5)
1. a kind of more infra-red radiation observation devices, which is characterized in that including：
Cabinet (1), cabinet (1) bottom be equipped with water-collecting tray (12), top open wide, left side be equipped with preformed hole, before be equipped with it is infrared
Observation window (4), the infrared observation window (4) are closed by infrared observation window sealing block (18)；
Lateral loading device, including lateral oil cylinder (2), lateral pressure head (6), left side fixed block (7), right side fixed block (9), pressure
Sensor (10), displacement sensor (3) and displacement sensor are mobile bracket (8), and the lateral oil cylinder (2) passes through preformed hole and side
It is connected to pressure head (6), lateral pressure head (6) is bolted with left side fixed block (7), and the pressure sensor (10) is mounted on
On the right side of cabinet (1) on steel plate, right side fixed block (9) is bolted with pressure sensor (10), the left side fixed block (7)
The sidewise restraint to sample (13) is formed with right side fixed block (9), is gone back on the left side fixed block (7) and right side fixed block (9)
Equipped with acoustic emission probe (14), institute's displacement sensors (3) are arranged on lateral oil cylinder (2), and displacement sensor is mobile bracket (8)
It is mounted on left side fixed block (7)；
Axial loading device, including axial pressure head (5) and bottom cushion block (11), the axial direction pressure head (5) and bottom cushion block (11)
Axial constraint is formed to sample (13), the axial direction pressure head (5) is equipped with fluid channel (15), and the bottom cushion block (11) is equipped with leakage
Water hole (17)；
Precedence constraints device, including infrared observation window sealing block (18), front side fixed block (19) and rear side fixed block (20), it is described
Infrared observation window sealing block (18), front side fixed block (19) and rear side fixed block (20) form precedence constraints to sample (13)；
Lateral loading device, axial loading device and precedence constraints device form the receiving for limiting sample (13) in cabinet (1)
Chamber；
Thermal infrared imager is set before infrared observation window (14), and thermal infrared imager is towards accommodating chamber.
2. more infra-red radiation observation devices of one kind according to claim 1, the cabinet (1) are passed through by high-strength steel sheet
It is bolted and surrounds, water-collecting tray (12) is bolted to connection with cabinet (1) bottom.
3. more infra-red radiation observation devices of one kind according to claim 1, the left side fixed block (7) and right side are fixed
Block (9) is equipped with the hole slot for installing acoustic emission probe (14), and the acoustic emission probe (14) passes through acoustic emission probe fixture
(21) it is mounted in hole slot.
4. more infra-red radiation observation devices of one kind according to claim 1, the water-collecting tray (12) is equipped with water outlet
(17)。
5. a kind of more infra-red radiation observation methods, which is characterized in that seen using more infra-red radiations described in claim 1-4
Device is surveyed, is included the following steps：
Step 1：Assemble experimental provision, left side fixed block (7), the right side fixed block that selection matches with sample (13) size
(9), acoustic emission probe (14) is installed to left side fixed block (7) and right side by front side fixed block (19) and rear side fixed block (20)
Fixed block (9), fixes thermal infrared imager, and experimental provision is put on MTS universal testing machine and is fixed, pilot scale study system
System；
Step 2：Sample (13) is sealed using polyethylene film；
Step 3：Sample (13) in the step 2 is placed into in cabinet (1) and fixed, mobile axial direction pressure head (5) and side
It is close to sample but non-applied force to pressure head (6), guarantees that sample (13) are in three-dimensional restrained condition；
Step 4：Axially and laterally biaxial loadings are carried out to sample (13), sample (13) is made to be in stress of primary rock level；
Step 5：It keeps sample (13) to be in stress of primary rock level, removes fixed block (19) on front side of cabinet (1), simulate coal and rock
Digging process；
Step 6：Stress path is carried according to designed plus (unloading), axially and laterally biaxial loadings are carried out to sample (13)；
Step 7：Data are carried out to sample (13) by pressure sensor, displacement sensor, acoustic emission probe and thermal infrared imager
Acquisition；
Step 8：Percolating medium is passed through into the internal fluid channel (15) of axial pressure head (5) and enters sample (13), tests and records
Add and (unload) permeability variation of sample during carrying；
Step 9：The infra-red radiation response of coal petrography Unloading Damage of Soft Soil evolution is adopted in the data acquired in analysis experimentation, research
Mechanism and its infiltrative characterization.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810199495.3A CN108844871B (en) | 2018-03-12 | 2018-03-12 | Multi-field infrared radiation observation device and method |
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|---|---|---|---|
| CN201810199495.3A CN108844871B (en) | 2018-03-12 | 2018-03-12 | Multi-field infrared radiation observation device and method |
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| CN108844871A true CN108844871A (en) | 2018-11-20 |
| CN108844871B CN108844871B (en) | 2021-01-15 |
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| CN111398564A (en) * | 2020-04-10 | 2020-07-10 | 安徽理工大学 | Deep pressure-bearing water mining fault water inrush multi-field precursor information evolution similarity test device and test method |
| CN111413208A (en) * | 2020-04-17 | 2020-07-14 | 太原理工大学 | Test device and test method for dynamic and static loading infrared observation of fractured coal rock mass |
| CN111579385A (en) * | 2020-05-09 | 2020-08-25 | 山东大学 | Device and method for rock-like resin material low-temperature hydraulic coupling test |
| CN112858015A (en) * | 2020-12-28 | 2021-05-28 | 太原理工大学 | Test device and method for coal rock gas-solid coupling dynamic and static loading and unloading infrared observation |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109667623A (en) * | 2018-12-26 | 2019-04-23 | 江苏师范大学 | It is a kind of for underworkings and the on-line detecting system of Tunnel testing |
| CN111398564A (en) * | 2020-04-10 | 2020-07-10 | 安徽理工大学 | Deep pressure-bearing water mining fault water inrush multi-field precursor information evolution similarity test device and test method |
| CN111413208A (en) * | 2020-04-17 | 2020-07-14 | 太原理工大学 | Test device and test method for dynamic and static loading infrared observation of fractured coal rock mass |
| CN111579385A (en) * | 2020-05-09 | 2020-08-25 | 山东大学 | Device and method for rock-like resin material low-temperature hydraulic coupling test |
| CN112858015A (en) * | 2020-12-28 | 2021-05-28 | 太原理工大学 | Test device and method for coal rock gas-solid coupling dynamic and static loading and unloading infrared observation |
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| Publication number | Publication date |
|---|---|
| CN108844871B (en) | 2021-01-15 |
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