CN110261220A - A kind of compound dynamic disaster simulation experiment method of mine for considering top plate and influencing - Google Patents

A kind of compound dynamic disaster simulation experiment method of mine for considering top plate and influencing Download PDF

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Publication number
CN110261220A
CN110261220A CN201811476855.6A CN201811476855A CN110261220A CN 110261220 A CN110261220 A CN 110261220A CN 201811476855 A CN201811476855 A CN 201811476855A CN 110261220 A CN110261220 A CN 110261220A
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pressure
test
coal
resistant sealed
sealed cavity
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田成林
胡千庭
梁运培
孙海涛
赵博
杨雪林
杨硕
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田成林
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/08Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0001Type of application of the stress
    • G01N2203/0003Steady
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0014Type of force applied
    • G01N2203/0016Tensile or compressive
    • G01N2203/0019Compressive
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0058Kind of property studied
    • G01N2203/0069Fatigue, creep, strain-stress relations or elastic constants
    • G01N2203/0075Strain-stress relations or elastic constants
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02Details not specific for a particular testing method
    • G01N2203/022Environment of the test
    • G01N2203/023Pressure
    • G01N2203/0232High pressure
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02Details not specific for a particular testing method
    • G01N2203/06Indicating or recording means; Sensing means
    • G01N2203/0641Indicating or recording means; Sensing means using optical, X-ray, ultra-violet, infrared or similar detectors
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02Details not specific for a particular testing method
    • G01N2203/06Indicating or recording means; Sensing means
    • G01N2203/0641Indicating or recording means; Sensing means using optical, X-ray, ultra-violet, infrared or similar detectors
    • G01N2203/0647Image analysis
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02Details not specific for a particular testing method
    • G01N2203/06Indicating or recording means; Sensing means
    • G01N2203/0658Indicating or recording means; Sensing means using acoustic or ultrasonic detectors
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02Details not specific for a particular testing method
    • G01N2203/06Indicating or recording means; Sensing means
    • G01N2203/067Parameter measured for estimating the property
    • G01N2203/0676Force, weight, load, energy, speed or acceleration
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02Details not specific for a particular testing method
    • G01N2203/06Indicating or recording means; Sensing means
    • G01N2203/067Parameter measured for estimating the property
    • G01N2203/0682Spatial dimension, e.g. length, area, angle

Abstract

Specific as follows the invention discloses a kind of compound dynamic disaster simulation experiment method of mine that consideration top plate influences: the coal petrography assembly test specimen for being pasted with foil gauge that will be prepared is packed into high-pressure-resistant sealed cavity;The installation and debugging of completion other equipment simultaneously start;It vacuumizes, inflates, load and the air pressure of real-time monitoring cavity, coal and rock respectively strain and characteristics of Acoustic Emission;Moment is destroyed by the valve release of explosion-proof type high speed pneumatic in test specimen, and the power presentation attributes observed in Catastrophe Process is simultaneously analyzed.Invention also provides a kind of compound dynamic disaster simulation experiment systems of mine that consideration top plate influences.System monitoring can be carried out to the compound disaster catastrophe of mine each stage using the present invention provide data supporting simultaneously for the Accurate Analysis in catastrophe each stage, with important theory significance and engineering value, the prediction and prevention and treatment of the mines composite power disaster such as the bump-coal and gas prominent induced deep mining equally have positive effect.

Description

A kind of compound dynamic disaster simulation experiment method of mine for considering top plate and influencing
Technical field
The invention belongs to shop test equipment technical fields, and in particular to a kind of mine for considering that top plate influences is compound dynamic Power disaster simulation test method.
Background technique
Deep coalmine exploitation is on the rise by threats such as high-ground stress, high temperature, high karst waters, and high tension coal mining (disturbance) makes Some highly gassy mines occur the probability of compound coal rock dynamic disaster and significantly increase, such dynamic disaster has both prominent and punching The Partial Feature pressed with hitting, two kinds of dynamic disasters coexist each other, interact, is mutually compound.Meanwhile the compound coal or rock dynamic in deep Disaster is a complicated mechanical process, and many factors are interweaved in disaster generating process, causes to breed in accident, send out In raw, development process may inducement each other, strengthen each other, or generate " resonance " effect, so that the hair of composite power disaster Life reason is increasingly complex, and theoretical research is more difficult.
The previous research for coal rock gas dynamic disaster often only considers that coal and rock and gas by mining influence act on, It is complicated in view of force analysis, energy conversion is unintelligible, research means are limited etc. one although considering top plate influence to a certain degree Directly do not carry out effective research, usually ignore top plate influence, but practical upper plate breed in coal-rock-gas dynamical disaster, Develop, until excitation phase has always energy participation, but the specific source of participation energy and quantization are still unintelligible at present.
Carry out relevant examination based on this further to understand fully composite power disaster genesis mechanism and its energy conversion machine system Testing research can yet be regarded as a kind of effective means.In view of composite power disaster has huge destructive and harmfulness, scene is artificial It is not feasible to induce composite power disaster.Therefore, research and development can satisfy corresponding pregnant calamity, cause the experimental rig of calamity condition and be based on This carries out serial laboratory test, attempts to carry out quantitative research from energy point of view, and can further clarify top plate in Catastrophe Process influences Range (energy source) and top plate energy accumulation, transmitting and releasing mechanism, the prediction and prevention and treatment of disaster compound for mine are same Sample has important practical significance.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of compound dynamic disaster simulation of the mine that consideration top plate influences Test method, carry out top plate under the influence of disaster simulation test and to each stage parameter of catastrophe carry out system monitoring.On realizing Purpose is stated, the present invention adopts the following technical scheme:
A kind of compound dynamic disaster simulation experiment method of mine for considering top plate and influencing, characterized in that include:
The first step, test material preparation
Coal petrography assembly test specimen is prepared based on top plate and bottom plate and coal seam thickness ratio and is strained respectively in coal, rock surface mount Piece;
Second step, test specimen installation and monitoring device installation and debugging
The coal petrography assembly test specimen prepared is packed into high-pressure-resistant sealed cavity to connect through lead output end connection glass sintering It connects device and then is connect with external deformeter;Each component of output end is sequentially connected and is debugged;It can in high-pressure-resistant sealed cavity middle section Replacement partial outer face groove is installed acoustic emission probe and is debugged;
Third step, test process
Start power loading module, apply axial pressure pretightning force to the intracorporal coal petrography assembly test specimen of high-pressure-resistant sealed chamber, Test specimen is kept to stablize;High-pressure-resistant sealed cavity is vacuumized by vacuumizing end;It injects and adsorbs to high-pressure-resistant sealed cavity Property gas and keep setting adsorption time;
The adsorption time of setting to be achieved, by power loading module according to displacement loading method load, Simultaneous Monitoring sound Emit air pressure change in signal and high-pressure-resistant sealed cavity;
Gradually load is until test specimen destruction, resistance in coal petrography assembly test specimen destruction moment opening explosion-proof type high speed pneumatic valve High pressure sealing cavity moment release, coal petrography assembly test specimen characteristics of Acoustic Emission, transparent pipe in synchronous recording high-pressure-resistant sealed cavity Gas pressure, gas concentration and temperature at road different location are recorded broken by thermal infrared imager and split type high-speed camera The infrared imaging and motion feature of blocky coal body broken and dish out;Total amount, the geometry for counting lumped coal that is broken and being spilled over are special It levies and along transparent pipeline distribution characteristics;
4th step terminates primary test
Data collection, arrangement to monitoring, terminate primary test;
5th step organizes together other tests
Change coal petrography thickness ratio and/or gas pressure in coal petrography assembly respectively, repeats to test;
6th step, test result analysis
Data Data network analysis and induction and conclusion to monitoring.
Described apply to the intracorporal coal petrography assembly test specimen of high-pressure-resistant sealed chamber axially presses pretightning force for 0.3~0.5kN;To The air pressure of the absorbing gas of high-pressure-resistant sealed cavity injection is 0.1~2MPa, keeps adsorption time not less than for 24 hours.
The pressure of high-pressure-resistant sealed cavity is monitored by the gas pressure sensor that the sensor connecting pin connects;Pass through Gas pressure in the gas pressure sensor monitoring transparent pipeline of gas pressure sensor interface connection;
Coal petrography assembly test specimen total stress-strain is obtained by power loading module, coal petrography is obtained by lead output end The respective strain of coal, rock in assembly test specimen;
The geometrical characteristic includes partial size and specific surface area, includes dish out distance and speed of dishing out along transparent pipeline distribution characteristics Degree.
The power loading module provides power to high-pressure-resistant sealed cavity by T-type rigid pressure head;It is described high pressure resistant close Envelope cavity includes the bearing base of high-pressure-resistant sealed cavity body and bottom;The high-pressure-resistant sealed cavity body can be spelled by three sections The cavity composition connect, i.e. upper portion, the replaceable part in middle section and bottom section part;
The upper portion, the replaceable part in middle section and bottom section part are sequentially connected with and are marked with sealant in junction;
The groove for fixing acoustic emission probe is symmetrically offered before and after the replaceable partial outer face in middle section;
Alternatively partially left and right offers input terminal and output end in the middle section;
The input terminal and output end center line line cross the line where the replaceable part in middle section section center;
The groove center line and input terminal and output end center line are in same level and perpendicular to input terminal and output Hold center line;
The output end diameter d and high-pressure-resistant sealed cavity body diameter D proportional region are [1/4,1/6];
Bottom section part is equipped with lead output end;
The lead output end is connect by glass sintering connector with the external world;
The input terminal one dividing into three and individually control, respectively vacuumize end, inflatable end and sensor connecting pin;
The output end connects transparent pipeline by explosion-proof type high speed pneumatic valve, and the transparent pipeline upper plane offers Gas pressure sensor interface, temperature sensor interface and gas concentration sensor interface;
Thermal infrared imager and multiple split type high-speed cameras are provided with by the transparent pipeline.
The power loading module includes rigidity matching and pressure-bearing cushion block;
The pressure-bearing cushion block includes the first pressure-bearing cushion block being superimposed and at least one piece of second pressure-bearing cushion block, and described The top and bottom of one pressure-bearing cushion block all offer limiting groove, and the limiting groove at top matches with the bearing base of bottom, The limiting groove of bottom matches with the retention bead at the top of the second pressure-bearing cushion block;
The bottom of the second pressure-bearing cushion block is equipped with limiting groove.
Power is applied by T-type rigid pressure head at the top of the high-pressure-resistant sealed cavity, T-type rigid pressure head bottom opens up There is sealed groove and be cased with sealing ring and is sealed.
The transparent pipeline is supported by adjustable supporter.
The gas pressure sensor interface, temperature sensor interface and gas concentration sensor interface are one group and are distributed in On the same section of transparent pipeline and along transparent pipeline equidistantly distributed several groups.
Beneficial effects of the present invention:
1. the mine compound dynamic disaster simulation experiment method proposed by the present invention for considering top plate and influencing, is multiple to mine Mould assembly power causes useful supplement of the calamity in terms of test, while being also further to understand fully that composite power causes calamity mechanism in theoretical side It provides and supports.
2. a hair proposes the compound dynamic disaster simulation experiment system of mine for considering that top plate influences, by high-pressure-resistant sealed Cavity design is the sliceable structure of multistage, and wherein the replaceable part in middle section can be according to design likelihood ratio adjustment replacement, in addition, can be right Coal petrography assembly, pure coal (raw coal, moulded coal) etc. are tested, and have stronger practicability.
3. apparatus of the present invention delicate structure, test operation is simple and easy to do, and experimentation cost is low, while can be the three-dimensional of large scale Analog simulation test provides helpful reference.
4. all stage (breeding → development → to excite → terminate) of analog catastrophe of the present invention, can be each with system monitoring Parameters, the Accurate Analysis for catastrophe each stage such as developing stage coal petrography body stress, strain and gas pressure, concentration provide data branch Support has important theory significance and engineering real value, and the bump-coal induced for deep mining is dashed forward with gas The FORECAST AND PREVENTION of equal mines composite power disaster has positive effect out.
Detailed description of the invention
Fig. 1 is a kind of compound dynamic disaster simulation experiment method flow chart of mine for considering top plate and influencing of the present invention.
Fig. 2 is that a kind of compound dynamic disaster simulation experiment system overall structure of mine for considering that top plate influences of the present invention is shown It is intended to.
Fig. 3 is power loading module of the present invention-rigidity matching the first pressure-bearing cushion block.
Fig. 4 is power loading module of the present invention-rigidity matching the second pressure-bearing cushion block.
Fig. 5 is transparent pipeline top view of the present invention.
Fig. 6 is the coal petrography assembly test specimen in the embodiment of the present invention.
Fig. 7 is high-pressure-resistant sealed cavity upper portion of the present invention.
Fig. 8 is the replaceable part in high-pressure-resistant sealed cavity of the present invention middle section.
Fig. 9 is high-pressure-resistant sealed cavity of the present invention bottom section part.
The second pressure-bearing of 1- cushion block, the first pressure-bearing of 2- cushion block, 3- limiting groove, 3-1- bearing base, 4- high-pressure-resistant sealed chamber Body ontology, 4-1- upper portion, the replaceable part in the middle section 4-2-, 4-3- groove, the bottom 4-4- section part, 5-T type rigid pressure head, 6- Sealed groove, 7- sealing ring, 8- lead output end, 9- input terminal, 10- output end, 11- glass sintering connector, 12- are vacuumized End, 13- inflatable end, 14- sensor connecting pin, 15- explosion-proof type high speed pneumatic valve, 16- transparent pipeline, 17- adjustable supporter branch Support, 18- gas pressure sensor interface, 19- temperature sensor interface, 20- gas concentration sensor interface, 21- infrared thermal imagery The split type high-speed camera of instrument, 22-, 23- coal petrography assembly test specimen.
Specific embodiment
The invention will be further described with embodiment with reference to the accompanying drawing.
As shown in figs. 1-9, a kind of compound dynamic disaster simulation experiment method of mine for considering top plate and influencing, feature It is, comprising:
The first step, test material preparation
Coal petrography assembly test specimen 23 is prepared based on top plate and bottom plate and coal seam thickness ratio and is answered respectively in coal, rock surface mount Become piece;
Second step, test specimen installation and monitoring device installation and debugging
The coal petrography assembly test specimen 23 prepared is packed into high-pressure-resistant sealed cavity and connects glass sintering through lead output end 8 Connector 11 is connect with external deformeter in turn;Each component of output end 10 is sequentially connected and is debugged;In high-pressure-resistant sealed cavity Acoustic emission probe is installed at the replaceable part 4-2 outer surface groove 4-3 in middle section and is debugged;
Third step, test process
Start power loading module, applies axial pressure to the intracorporal coal petrography assembly test specimen 23 of high-pressure-resistant sealed chamber and pre-tighten Power keeps test specimen to stablize;It is vacuumized by vacuumizing the 12 pairs of high-pressure-resistant sealed cavitys in end;It is injected to high-pressure-resistant sealed cavity Absorbing gas and the adsorption time for keeping setting;
The adsorption time of setting to be achieved, by power loading module according to displacement loading method load, Simultaneous Monitoring sound Emit air pressure change in signal and high-pressure-resistant sealed cavity;
Gradually load is until test specimen destroys, in the destruction moment opening explosion-proof type high speed pneumatic valve of coal petrography assembly test specimen 23 15, high-pressure-resistant sealed cavity moment release, coal petrography assembly test specimen characteristics of Acoustic Emission in synchronous recording high-pressure-resistant sealed cavity, thoroughly Gas pressure, gas concentration and temperature at 16 different location of open conduit, pass through thermal infrared imager 21 and split type high-speed camera Machine 22 records the infrared imaging and motion feature of blocky coal body that is broken and dishing out;Count the total of lumped coal that is broken and being spilled over Amount, geometrical characteristic, along 16 distribution characteristics of transparent pipeline;
4th step terminates primary test
Data collection, arrangement to monitoring, terminate primary test;
5th step organizes together other tests
Change coal petrography thickness ratio and/or gas pressure in coal petrography assembly respectively, repeats to test;
6th step, test result analysis
Data Data network analysis and induction and conclusion to monitoring.
Described apply to the intracorporal coal petrography assembly test specimen 23 of high-pressure-resistant sealed chamber axially presses pretightning force for 0.3~0.5kN; The air pressure of the absorbing gas injected to high-pressure-resistant sealed cavity is 0.1~2MPa, keeps adsorption time not less than for 24 hours.
The pressure of high-pressure-resistant sealed cavity is monitored by the gas pressure sensor that the sensor connecting pin 14 connects;It is logical Cross the gas pressure in the gas pressure sensor monitoring transparent pipeline 16 of the connection of gas pressure sensor interface 18;
23 total stress of coal petrography assembly test specimen-strain is obtained by power loading module, coal is obtained by lead output end 8 23 coal of rock assembly test specimen, the respective strain of rock;
The geometrical characteristic includes partial size and specific surface area, includes dishing out apart from and dishing out along 16 distribution characteristics of transparent pipeline Speed.
The power loading module provides power to high-pressure-resistant sealed cavity by T-type rigid pressure head 5;It is described high pressure resistant close Envelope cavity includes the bearing base 3-1 of high-pressure-resistant sealed cavity body 4 and bottom;The high-pressure-resistant sealed cavity body 4 is by three The sliceable cavity composition of section, i.e. upper portion 4-1, the replaceable part 4-2 in middle section and bottom section part 4-4;
The upper portion 4-1, the replaceable part 4-2 in middle section and bottom section part 4-4 are sequentially connected with and are marked in junction Sealant;
The groove 4-3 for fixing acoustic emission probe is symmetrically offered before and after the outer surface the replaceable part 4-2 in middle section;
Described replaceable part 4-2 in middle section or so offers input terminal 9 and output end 10;
The input terminal 9 cross the line with 10 center line line of output end where the replaceable part 4-2 in middle section section Center;
The groove 4-3 center line and input terminal 9 and 10 center line of output end are in same level and perpendicular to input terminal 9 With 10 center line of output end;
The 10 diameter d of output end and 4 diameter D proportional region of high-pressure-resistant sealed cavity body are [1/4,1/6];
The bottom section part 4-4 is equipped with lead output end 8;
The lead output end 8 is connect by glass sintering connector 11 with the external world;
9 one dividing into three of input terminal and individually control, respectively vacuumize end 12, inflatable end 13 and sensor connecting pin 14;
The output end 10 connects transparent pipeline 16,16 upper flat of transparent pipeline by explosion-proof type high speed pneumatic valve 15 Face offers gas pressure sensor interface 18, temperature sensor interface 19 and gas concentration sensor interface 20;
Thermal infrared imager 21 and multiple split type high-speed cameras 22 are provided with by the transparent pipeline 16.
The power loading module includes rigidity matching and pressure-bearing cushion block;
The pressure-bearing cushion block includes the first pressure-bearing cushion block 2 being superimposed and at least one piece of second pressure-bearing cushion block 1, described The top and bottom of first pressure-bearing cushion block 2 all offer limiting groove, the limiting groove 3 at top and the bearing base 3-1 of bottom It matches, the limiting groove of bottom matches with the retention bead at 1 top of the second pressure-bearing cushion block;
The bottom of the second pressure-bearing cushion block 1 is equipped with limiting groove.
Power is applied by T-type rigid pressure head 5 at the top of the high-pressure-resistant sealed cavity, 5 bottom of T-type rigid pressure head is opened Equipped with sealed groove 6 and it is cased with sealing ring 7 and is sealed.
The transparent pipeline is supported by adjustable supporter 17.
The gas pressure sensor interface 18, temperature sensor interface 19 and gas concentration sensor interface 20 are one group It is distributed on the same section of transparent pipeline 16 and along 16 equidistantly distributed several groups of transparent pipeline.
Above-mentioned, although the foregoing specific embodiments of the present invention is described with reference to the accompanying drawings, not protects model to the present invention The limitation enclosed, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art are not Need to make the creative labor the various modifications or changes that can be made still within protection scope of the present invention.

Claims (8)

1. a kind of compound dynamic disaster simulation experiment method of mine for considering top plate and influencing, characterized in that include:
The first step, test material preparation
Coal petrography assembly test specimen is prepared based on top plate and bottom plate and coal seam thickness ratio and respectively in coal, rock surface mount foil gauge;
Second step, test specimen installation and monitoring device installation and debugging
The coal petrography assembly test specimen prepared is packed into high-pressure-resistant sealed cavity and connects glass sintering connector through lead output end And then it is connect with external deformeter;Each component of output end is sequentially connected and is debugged;It is replaceable in high-pressure-resistant sealed cavity middle section Partial outer face groove is installed acoustic emission probe and is debugged;
Third step, test process
Start power loading module, applies axial pressure pretightning force to the intracorporal coal petrography assembly test specimen of high-pressure-resistant sealed chamber, keep Test specimen is stablized;High-pressure-resistant sealed cavity is vacuumized by vacuumizing end;Adsorptivity gas is injected to high-pressure-resistant sealed cavity Body and the adsorption time for keeping setting;
The adsorption time of setting to be achieved, by power loading module according to displacement loading method load, Simultaneous Monitoring sound emission Air pressure change in signal and high-pressure-resistant sealed cavity;
Gradually load is until test specimen destruction, high pressure resistant in coal petrography assembly test specimen destruction moment opening explosion-proof type high speed pneumatic valve Seal cavity moment release, coal petrography assembly test specimen characteristics of Acoustic Emission, open conduit be not in the saturating high-pressure-resistant sealed cavity of synchronous recording It is broken simultaneously by thermal infrared imager and split type high-speed camera record with gas pressure, gas concentration and the temperature at position The infrared imaging and motion feature for the blocky coal body dished out;Statistics is broken and the total amount of the lumped coal that is spilled over, geometrical characteristic and Along transparent pipeline distribution characteristics;
4th step terminates primary test
Data collection, arrangement to monitoring, terminate primary test;
5th step organizes together other tests
Change coal petrography thickness ratio and/or gas pressure in coal petrography assembly respectively, repeats to test;
6th step, test result analysis
Data Data network analysis and induction and conclusion to monitoring.
2. test method as described in claim 1, characterized in that described to the intracorporal coal petrography assembly examination of high-pressure-resistant sealed chamber It is 0.3~0.5kN that part, which applies axial pressure pretightning force,;To high-pressure-resistant sealed cavity inject absorbing gas air pressure be 0.1~ 2MPa keeps adsorption time not less than for 24 hours.
3. test method as described in claim 1, characterized in that the power loading module is by T-type rigid pressure head to resistance to High pressure sealing cavity provides power;The high-pressure-resistant sealed cavity includes the pressure-bearing bottom of high-pressure-resistant sealed cavity body and bottom Seat;The high-pressure-resistant sealed cavity body is made of three sections of sliceable cavitys, i.e. upper portion, the replaceable part in middle section and bottom Section part;
The upper portion, the replaceable part in middle section and bottom section part are sequentially connected with and are marked with sealant in junction;
The groove for fixing acoustic emission probe is symmetrically offered before and after the replaceable partial outer face in middle section;
Alternatively partially left and right offers input terminal and output end in the middle section;
The input terminal and output end center line line cross the line where the replaceable part in middle section section center;
The groove center line and input terminal and output end center line are in same level and perpendicular in input terminal and output end Heart line;
The output end diameter d and high-pressure-resistant sealed cavity body diameter D proportional region are [1/4,1/6];
Bottom section part is equipped with lead output end;
The lead output end is connect by glass sintering connector with the external world;
The input terminal one dividing into three and individually control, respectively vacuumize end, inflatable end and sensor connecting pin;
The output end connects transparent pipeline by explosion-proof type high speed pneumatic valve, and the transparent pipeline upper plane offers gas Pressure sensor interface, temperature sensor interface and gas concentration sensor interface;
Thermal infrared imager and multiple split type high-speed cameras are provided with by the transparent pipeline.
4. test method as claimed in claim 3, characterized in that the gas pressure sensor of the sensor connecting pin connection Monitor the pressure of high-pressure-resistant sealed cavity;Transparent pipe is monitored by the gas pressure sensor that gas pressure sensor interface connects Gas pressure in road;
Coal petrography assembly test specimen total stress-strain is obtained by power loading module, coal petrography combination is obtained by lead output end The respective strain of coal, rock in body test specimen;
The geometrical characteristic includes partial size and specific surface area, includes dish out distance and speed of dishing out along transparent pipeline distribution characteristics.
5. the test method as described in claim 1-4 any one, characterized in that the power loading module includes rigidity examination Test machine and pressure-bearing cushion block;
The pressure-bearing cushion block includes the first pressure-bearing cushion block being superimposed and at least one piece of second pressure-bearing cushion block, and described first holds The top and bottom of pressure pad block all offer limiting groove, and the limiting groove at top matches with the bearing base of bottom, bottom Limiting groove match with the retention bead at the top of the second pressure-bearing cushion block;
The bottom of the second pressure-bearing cushion block is equipped with limiting groove.
6. test method as described in claim 3 or 4, characterized in that T-type rigid pressure head lower part offers sealed groove And it is cased with sealing ring and is sealed.
7. test method as described in claim 1, characterized in that the transparent pipeline is supported by adjustable supporter.
8. test method as claimed in claim 3, characterized in that the gas pressure sensor interface, temperature sensor connect If mouth and gas concentration sensor interface are one group and are distributed on the same section of transparent pipeline and along transparent pipeline equidistantly distributed Dry group.
CN201811476855.6A 2018-12-05 2018-12-05 A kind of compound dynamic disaster simulation experiment method of mine for considering top plate and influencing Pending CN110261220A (en)

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