CN208672466U - A kind of coal seam containing gas impact failure and electromagnetic radiation effect experimental apparatus for testing - Google Patents
A kind of coal seam containing gas impact failure and electromagnetic radiation effect experimental apparatus for testing Download PDFInfo
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- CN208672466U CN208672466U CN201821083055.3U CN201821083055U CN208672466U CN 208672466 U CN208672466 U CN 208672466U CN 201821083055 U CN201821083055 U CN 201821083055U CN 208672466 U CN208672466 U CN 208672466U
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Abstract
The utility model is a kind of coal seam containing gas impact failure and electromagnetic radiation effect experimental apparatus for testing, sealed compartment, nylon rod PA-66, organic glass, coal petrography sample, shock sensors, metallic shield net, vacuum pump, computer, data collection system, temp probe, temperature sensor, foil gauge, electromagnetic radiation receiving antenna, gas gas tank, fixing bolt, harness cord bolt, air intake valve, outlet valve, air inlet, venthole, conducting wire punched out, flange, blank flange occurs including electromagnet, weight, hammer cylinder, glass fibre heating tape, impact.Gas environment rock and coal burst failures ELECTROMAGNETIC RADIATION SIGNATURE is rich in suitable for measurement, help more accurately to study affecting laws during containing rock and coal burst failures under gas environment between shock loading and the features such as Coal Pore Structure characteristic and ELECTROMAGNETIC RADIATION SIGNATURE amplitude, energy and frequency, theoretical foundation is provided for prevention, the early warning of coal containing methane gas mine coal rock dynamic disaster, there is stronger practicability.
Description
Technical field
The utility model relates to a kind of coal seam containing gas impact failure and electromagnetic radiation effect experimental apparatus for testing, are suitable for
Transient electromagnetic is generated when testing the dynamic response feature and coal petrography destruction for the load action that is hit rich in coal petrography under gas environment
The changing rule of radiation signal destroys electromagnetism spoke to coal petrography to study dynamic failure characteristic and the methane gas of coal seam containing gas
Penetrate the affecting laws of the time-frequency characteristics such as signal amplitude, energy and frequency.
Background technique
In deep during exploitation of coal resources, coal seam is in rich state gassy mostly, and coal-bed gas is not only respectively
The important composition attribute of root or underground coal the series of rocks system of class Gas Disaster accident.Gas and coal seam and its common group of country rock
At coal seam containing gas system, be the special media that one kind is different from solid (coal petrography) and fluid (gas), condition variation and
Motion process is extremely complex, easily causes large-scale disaster accident.The macroscopic failure of coal and rock is its internal crack, crackle production
Raw, extension and aggregation result.In Mine Production, tunnel blasting excavation, blasting coal mining, back be caving, tomography
Sliding, bump etc. all have typical impact destructive characteristics, these phenomenons or disaster are often local engineering structure
The embodiment that the concentrations such as coal and rock deforms in the short time under the disturbance of shock loading, unstability are destroyed.Particularly, when containing gas
When coal rock dynamic disaster occurs, this transient state destructive process of coal petrography can usually damage the bracket in roadway space in a very short period of time
And important production equipment, cause ventilating system failure, cause the consequences such as serious property loss even casualties.However, working as
The preceding missing due to relevant apparatus and equipment, it is fewer and fewer for the research of coal seam containing gas impact failure.Therefore, contain to reduce
The loss of gas coal rock disaster bring, farthest assures the safety for life and property of the people, and needs the dynamics destroyed to it spy
Property study and the monitoring of normality carried out to this kind of accident whereby and early warning works.
Electromagnetic radiation technology is a kind of calamity powered by conventional energy that contactless geophysical method and China's coal-mine are existing
One of evil monitoring and warning important technical.Compared with traditional static borehole test method, electromagnetic radiation technology have it is non-contact,
Continuously, the advantages that not influencing production.Domestic and international many be engaged in the related fieldss such as mine safety mining and geophysical exploration
Persons have carried out a large amount of field observation, experimental study and theory analysis work to the electromagnetic radiation effect characteristic rule that coal petrography destroys
Make, and achieves achievement abundant.But the research that ELECTROMAGNETIC RADIATION SIGNATURE is destroyed for coal rock deformation at present be mostly in quasi-static loading or
It is being obtained under the conditions of Slow loading as a result, and transient electromagnetic signal rule is generated when impact or transient state are destroyed to local coal body
Study less, in particular for coal seam containing gas, the electromagnetic radiation effect research of dynamic failure process is not yet seen in related text
It offers, the missing for the mainly related experiment device of tracing it to its cause.However, carrying out the impact failure and electromagnetic signal point of coal seam containing gas
Analysis preferably can approach and simulate the practical mechanical property and locating stress state of underground coal and rock, further enrich and perfect
The electromagnetic radiation of coal petrography dynamic failure is theoretical, to popularization and application of the electromagnetic radiation technology in terms of coal rock dynamic disaster monitoring and prevention and treatment
With important theory significance and engineering significance.Therefore, design and build one group of matched coal seam containing gas impact failure and wink
Power transformation magnetic analysis experimental system is particularly important.
Currently, general transient impact dynamic loading experiments method mainly include drop weight method, Taylor's bar method of testing and separate type suddenly
Pu Jinsen compression bar tests (SHPB) method；In previous experimental study, these three methods and its experiments supporting device by with
In the shock-testing of common coal petrography, it is not suitable for coal seam containing gas.In addition, the middle promulgated by the State Council of Patent No. CN201310287479.7
Bright patent discloses the gas sealing device in a kind of experiment of coal mine impact, this kind of device ensures coal sample on the basis of SHPB
Without departing from the sealed environment of methane gas, but the device can not be opened for the test of ELECTROMAGNETIC RADIATION SIGNATURE under coal body shock loading
Exhibition experiment.
In conclusion the experimental apparatus for testing for developing a set of coal seam containing gas impact failure and its electromagnetic radiation effect helps
In probing into destructive characteristics and ELECTROMAGNETIC RADIATION SIGNATURE rule of the coal and rock under transient impact effect, to further probing into coal or rock dynamic
The generating process of disaster, the prediction and warning for realizing coal rock dynamic disaster improve Mine Safety in Production condition with important theory
And realistic meaning.
Utility model content
In view of deficiency existing for existing device, the utility model passes through improvement on the basis of traditional drop impact method
Design provides ELECTROMAGNETIC RADIATION SIGNATURE experimental apparatus for testing during a kind of coal seam containing gas impact failure, contains gas to study
The dynamic failure characteristic and methane gas of coal petrography destroy the time-frequency characteristics such as ELECTROMAGNETIC RADIATION SIGNATURE amplitude, energy and frequency to coal petrography
Affecting laws.
Technical problem to be solved in the utility model is divided into following three points: one be to provide it is simple, reliable, there is height weight
The Impulsive load method of renaturation；Second is that constructing closed environment gassy；Three are to provide the reception measurement side of ELECTROMAGNETIC RADIATION SIGNATURE
Method.
In order to solve the above technical problems, the utility model adopts the following technical solution: a kind of coal seam containing gas impact failure
And electromagnetic radiation effect experimental apparatus for testing, including electromagnet (1), weight (2), hammer cylinder (3), glass fibre heating tape (4), punching
Fire raw sealed compartment (5), nylon rod (PA-66) (6), organic glass (7), coal petrography sample (8), shock sensors (9), metal
Gauze screen (10), vacuum pump (11), computer (12), data collection system (13), temp probe (14), temperature sensor
(15), foil gauge (16), electromagnetic radiation receiving antenna (17), gas gas tank (18), fixing bolt, harness cord bolt, air intake valve,
Outlet valve, air inlet, venthole, conducting wire punched out, flange, blank flange.It is characterized in that weight (2) material is steel, column
Shape tack is connect with electromagnet (1) by magnetic attraction.Hammer cylinder (3) material is steel, long column hollow cylinder, adjustable, the both ends of height
Inside tapping, end face is connected through a screw thread with electromagnet (1) thereon, is equipped with O-shaped rubber ring and is sealed；Lower end surface occurs close with impact
Batten down (5) connection.Coal sample (8) is placed on impact and occurs in sealed compartment (5), and body is cylindrical body, and coal sample (8) upper surface places one
Shock sensors (9) are placed in a nylon rod (PA-66) (6) cylinder, coal sample (8) downside, and foil gauge is posted in coal sample (8) side
(16).Electromagnetic radiation receiving antenna (17) is placed on and organic glass (7) equal height, at suitable distance, for receiving electromagnetism
Radiation signal.It hammers cylinder (3) into shape and impact occurs to wind glass fibre heating tape (4) on the outside of sealed compartment (5), glass fibre heating tape
(4) it is connect by temp probe (14) with temperature sensor (15), it is ensured that experiment carries out under constant temperature conditions.In addition, in electromagnetism
It radiates receiving antenna (17) and impact occurs that metallic shield net (10) should be equipped with outside sealed compartment (5), air inlet passes through air intake valve
It is connect with gas gas tank, venthole is connect by outlet valve with vacuum pump (11).
Further, it is tubular housing, upper and lower end faces cutting and welded flange, connection method that sealed compartment, which occurs, for the impact
Tritonope plate is simultaneously fastened with fixing bolt, and O-ring seal is equipped between flange and blank flange.Upper surface blank flange center opened round
Through emptying aperture, aperture is identical as hammer cylinder, is welded to connect with hammer cylinder.Front and rear sides face cuts into plane, center opened round through hole,
Quadrangle aperture and tapping, are threadedly coupled with square planar organic glass, and O-ring seal is equipped between own perimeter and organic glass.
Drive stomata, venthole into left side.Two hole machined techniques are identical, are first to open through hole, then from outside to open coaxial radius larger
Hole and tapping connect harness cord bolt, are equipped with O-ring seal in hole.Two harness cord bolts connect with admission line, outlet pipe respectively
It connects, cable punched out, the same air inlet of processing technology are opened in right side, and outside is threadedly coupled with fixing bolt, and bolt-center, which is opened, to be run through
Hole uses epoxy resin and the joint sealing of horn mouth cushion rubber in through hole for being pierced by conducting wire.
Further, nylon rod (PA-66) cylinder, coal sample, position need to guarantee its axis and hammer cylinder central axes one
On vertical line, to ensure shock loading mean effort in coal sample upper surface.
Further, load transfer device of nylon rod (PA-66) cylinder as tension weight churning load, to remove impact
Loading device and test macro generate the influence of transient electromagnetic signal to coal impact failure, and the effect of the metallic shield net is
The interference that removal external environment generates testing experimental system.
In addition, the utility model provides a kind of utilization coal seam containing gas impact failure and electromagnetic radiation effect test device
The method tested, which is characterized in that itself the following steps are included:
(1) firstly, opening top flange, foil gauge is sticked in coal sample side, coal sample is put into impact, sealed compartment occurs；
(2) nylon rod (PA-66) cylinder is placed on above coal sample, installation top flange is fastened with fixing bolt；
(3) relative position for adjusting polytetrafluoroethyl-ne cylinder and coal sample guarantees coal sample in shock sensors center, coal
Sample is consistent with nylon rod (PA-66) cylinder central axes；
(4) hammer cylinder is threadedly coupled with top flange, is equipped with O-ring seal；
(5) weight is connected into electromagnet by magnetic attraction, is threadedly coupled electromagnet with hammer cylinder using insulating glove, if
There is O type sealing ring；
(6) heating tape is wound into hammer cylinder and impact to occur outside sealed compartment, guarantees that temp probe is wrapped in hammer cylinder and adds
Between the torrid zone, temperature controller is opened, adjustment temperature is assigned temperature and controls constant temperature；
(7) venthole is controlled to a vacuum pump by outlet regulating valve, air inlet is passed through into air inlet adjustment and gas gas tank
Connection；
(8) outlet regulating valve and vacuum pump are opened, extraction impact occurs gas in sealed compartment, coal sample is made to be in vacuum shape
State closes vacuum pump and outlet regulating valve；
(9) air inlet adjustment valve and gas gas tank are opened, so that methane gas is filled with impact and sealed compartment occurs, by adjusting air inlet
Regulating valve makes pressure in impact generation sealed compartment maintain specified pressure, and coal sample reaches adsorption-desorption balance, in rich in gas
State closes gas cylinder and air inlet adjustment valve；
(10) computer, data collection system, shock sensors, electromagnetic radiation receiving antenna are opened, each instrument is adjusted
Instrument guarantees its normal work；
(11) closing electromagnet, weight drop shock nylon rod (PA-66) cylinder, nylon rod (PA-66) power transmission to coal sample,
Coal sample deforms broken；
(12) data collection system collects the stress wave signal of coal sample reduction by foil gauge, passes through shock sensors
The shock loading signal for being applied to coal sample is collected, ELECTROMAGNETIC RADIATION SIGNATURE is collected by electromagnetic radiation receiving antenna；
(13) computer obtains each signal data and change curve；
(14) gas in sealed compartment is occurred for impact to be discharged, arranges instrument, experiment terminates.
The utility model provides a kind of coal seam containing gas impact failure and electromagnetic radiation effect experimental apparatus for testing, beneficial
Effect is:
(1) the utility model experimental apparatus for testing is used, different impact containing gas environment can be studied and act on lower coal
The changing rule and its Precursor Law of the amplitude of rock deformation failure ELECTROMAGNETIC RADIATION SIGNATURE, energy and frequency；
(2) the utility model experimental apparatus for testing is used, it is broken that different coal body material impacts under state containing gas can be studied
The otherness of bad ELECTROMAGNETIC RADIATION SIGNATURE；
(3) the utility model experimental apparatus for testing, nylon rod (PA-66) cylinder are used, metallic shield net can effectively be gone
Except impact loading device and test macro and external environment generate the influence of transient electromagnetic signal to coal impact failure, raising is adopted
Collect the reliability of ELECTROMAGNETIC RADIATION SIGNATURE.
Detailed description of the invention
Fig. 1 is device combined effect schematic diagram；
Fig. 2 is that sealed compartment sectional view occurs for impact；
In figure: 1- electromagnet；2- weight；3- hammers cylinder into shape；4- glass fibre heating tape；Sealed compartment occurs for 5- impact；6- nylon
Stick (PA-66)；7- organic glass；8- coal petrography sample；9- shock sensors；10- metallic shield net；11- vacuum pump；12- meter
Calculation machine；13- data collection system；14- temp probe；15- temperature sensor；16- foil gauge；17- electromagnetic radiation receiving antenna；
18- gas gas tank.
Specific embodiment
It is explained in detail below with reference to example of the attached drawing to the utility model.It is however noted that Fig. 1 schematic diagram
Offer is the whole overview to better understand the utility model, it is not construed as limitations of the present invention.
Fig. 1 is used for what coal seam containing gas electromagnetic radiation effect was tested for what is drawn according to the utility model a example
The structural schematic diagram of experimental provision, as shown in Figure 1, the utility model includes electromagnet (1), weight (2), hammer cylinder (3), glass fibers
Tie up heating tape (4), sealed compartment (5), nylon rod (PA-66) (6), organic glass (7), coal petrography sample (8), impact force occur for impact
Sensor (9), metallic shield net (10), vacuum pump (11), computer (12), data collection system (13), temp probe (14),
Temperature sensor (15), foil gauge (16), electromagnetic radiation receiving antenna (17), gas gas tank (18), fixing bolt, harness cord spiral shell
Bolt, air intake valve, outlet valve, air inlet, venthole, conducting wire punched out, flange, blank flange.Weight (2) material is steel,
Cylindricality tack is connect with electromagnet (1) by magnetic attraction.Hammer cylinder (3) material is steel, long column hollow cylinder, adjustable, the both ends of height
Inside tapping, end face is connected through a screw thread with electromagnet (1) thereon, is equipped with O-shaped rubber ring and is sealed；Lower end surface occurs close with impact
Batten down (5) connection.Coal sample (8) is placed on impact and occurs in sealed compartment (5), and body is cylindrical body, and coal sample (8) upper surface places one
Shock sensors (9) are placed in a nylon rod (PA-66) (6) cylinder, coal sample (8) downside, and foil gauge is posted in coal sample (8) side
(16).Electromagnetic radiation receiving antenna (17) is placed on and organic glass (7) equal height, at suitable distance, for receiving electromagnetism
Radiation signal.It hammers cylinder (3) into shape and impact occurs to wind glass fibre heating tape (4) on the outside of sealed compartment (5), glass fibre heating tape
(4) it is connect by temp probe (14) with temperature sensor (15), it is ensured that experiment carries out under constant temperature conditions.In addition, in electromagnetism
It radiates receiving antenna (17) and impact occurs that metallic shield net (10) should be equipped with outside sealed compartment (5), air inlet passes through air intake valve
It is connect with gas gas tank, venthole is connect by outlet valve with vacuum pump (11).
Fig. 2 is impact generation sealed compartment diagrammatic cross-section, as shown in Fig. 2, it is tubular housing that sealed compartment, which occurs, for the impact,
Simultaneously welded flange, connecting flange blind plate are simultaneously fastened with fixing bolt for upper and lower end faces cutting, are equipped between flange and blank flange O-shaped
Sealing ring.Upper surface blank flange center opened round runs through emptying aperture, and aperture is identical as hammer cylinder, is welded to connect with hammer cylinder.Front and back two
Side cut is threadedly coupled at plane, center opened round through hole, quadrangle aperture and tapping with square planar organic glass, circle
O-ring seal is equipped between hole periphery and organic glass.Drive stomata, venthole into left side.Two hole machined techniques are identical, are elder generation
Through hole is opened, then opens coaxial radius large hole and tapping from outside, harness cord bolt is connected, is equipped with O-ring seal in hole.Two harness cords
Bolt is connect with admission line, outlet pipe respectively, and cable punched out is opened in right side, the same air inlet of processing technology, outside and solid
Determine bolt thread connection, bolt-center opens through hole for being pierced by conducting wire, epoxy resin, horn mouth cushion rubber connection are used in through hole
Close sealing.
The method that the utility model is tested for coal seam containing gas impact failure and electromagnetic radiation effect test device
Steps are as follows:
(1) firstly, opening top flange, foil gauge is sticked in coal sample side, coal sample is put into impact, sealed compartment occurs；
(2) nylon rod (PA-66) cylinder is placed on above coal sample, installation top flange is fastened with fixing bolt；
(3) relative position for adjusting polytetrafluoroethyl-ne cylinder and coal sample guarantees coal sample in shock sensors center, coal
Sample is consistent with nylon rod (PA-66) cylinder central axes；
(4) hammer cylinder is threadedly coupled with top flange, is equipped with O-ring seal；
(5) weight is connected into electromagnet by magnetic attraction, is threadedly coupled electromagnet with hammer cylinder using insulating glove, if
There is O type sealing ring；
(6) heating tape is wound into hammer cylinder and impact to occur outside sealed compartment, guarantees that temp probe is wrapped in hammer cylinder and adds
Between the torrid zone, temperature controller is opened, adjustment temperature is assigned temperature and controls constant temperature；
(7) venthole is controlled to a vacuum pump by outlet regulating valve, air inlet is passed through into air inlet adjustment and gas gas tank
Connection；
(8) outlet regulating valve and vacuum pump are opened, extraction impact occurs gas in sealed compartment, coal sample is made to be in vacuum shape
State closes vacuum pump and outlet regulating valve；
(9) air inlet adjustment valve and gas gas tank are opened, so that methane gas is filled with impact and sealed compartment occurs, by adjusting air inlet
Regulating valve makes pressure in impact generation sealed compartment maintain specified pressure, and coal sample reaches adsorption-desorption balance, in rich in gas
State closes gas cylinder and air inlet adjustment valve；
(10) computer, data collection system, shock sensors, electromagnetic radiation receiving antenna are opened, each instrument is adjusted
Instrument guarantees its normal work；
(11) closing electromagnet, weight drop shock nylon rod (PA-66) cylinder, nylon rod (PA-66) power transmission to coal sample,
Coal sample deforms broken；
(12) data collection system collects the stress wave signal of coal sample reduction by foil gauge, passes through shock sensors
The shock loading signal for being applied to coal sample is collected, ELECTROMAGNETIC RADIATION SIGNATURE is collected by electromagnetic radiation receiving antenna；
(13) computer obtains each signal data and change curve；
(14) gas in sealed compartment is occurred for impact to be discharged, arranges instrument, experiment terminates.
The above implementation steps are merely to illustrate the utility model, and are not limitation of the utility model, and are not departing from this
Under the premise of utility model design spirit, what the ordinary engineering and technical personnel of this field made the technical solution of the utility model
Various changes and improvements should all be fallen into the protection scope of claims determination of the utility model.
Claims (4)
1. a kind of coal seam containing gas impact failure and electromagnetic radiation effect experimental apparatus for testing, including electromagnet (1), weight (2),
Hammer cylinder (3), glass fibre heating tape (4), impact generation sealed compartment (5), nylon rod PA-66 (6), organic glass (7), coal petrography sample into shape
Product (8), shock sensors (9), metallic shield net (10), vacuum pump (11), computer (12), data collection system (13),
Temp probe (14), foil gauge (16), electromagnetic radiation receiving antenna (17), gas gas tank (18), is fixed temperature sensor (15)
Bolt, harness cord bolt, air intake valve, outlet valve, air inlet, venthole, conducting wire punched out, flange, blank flange, feature
It is that weight (2) material is steel, cylindricality tack is connect with electromagnet (1) by magnetic attraction；Hammer cylinder (3) material is steel, long column
Hollow cylinder, height is adjustable, and tapping on the inside of both ends, end face is connected through a screw thread with electromagnet (1) thereon, and it is close to be equipped with O-shaped rubber ring
Envelope, lower end surface occur sealed compartment (5) with impact and connect；Coal petrography sample (8) is placed on impact and occurs in sealed compartment (5), and body is
Cylindrical body, coal petrography sample (8) upper surface place nylon rod PA-66 (6) cylinder, place impact force on the downside of coal petrography sample (8)
Foil gauge (16) are posted in sensor (9), coal petrography sample (8) side；Electromagnetic radiation receiving antenna (17) is placed on and organic glass
(7) equal height, at suitable distance, for receiving ELECTROMAGNETIC RADIATION SIGNATURE；Hammer cylinder (3) and impact occur to twine on the outside of sealed compartment (5)
Around glass fibre heating tape (4), glass fibre heating tape (4) are connect by temp probe (14) with temperature sensor (15), really
Experiment is protected to carry out under constant temperature conditions；In electromagnetic radiation receiving antenna (17) and impact occur that metal should be equipped with outside sealed compartment (5)
Gauze screen (10), air inlet are connect by air intake valve with gas gas tank, and venthole is connected by outlet valve and vacuum pump (11)
It connects.
2. a kind of coal seam containing gas impact failure according to claim 1 and electromagnetic radiation effect experimental apparatus for testing, institute
Stating impact sealed compartment occurs is tubular housing, and simultaneously welded flange, connecting flange blind plate simultaneously use fixing bolt for upper and lower end faces cutting
Fastening is equipped with O-ring seal between flange and blank flange；Upper surface blank flange center opened round runs through emptying aperture, aperture and hammer
Cylinder is identical, is welded to connect with hammer cylinder；Front and rear sides face cuts into plane, center opened round through hole, quadrangle aperture and tapping, with
Square planar organic glass is threadedly coupled, and O-ring seal is equipped between own perimeter and organic glass；Left side is driven stomata into, is gone out
Stomata, two hole machined techniques are identical, are first to open through hole, then from outer side opening and tapping, connect harness cord bolt, be equipped in hole
O-ring seal；Two harness cord bolts are connect with admission line, outlet pipe respectively, and cable punched out is opened in right side, and processing technology is same
Air inlet, outside are threadedly coupled with fixing bolt, and bolt-center opens through hole for being pierced by conducting wire, use asphalt mixtures modified by epoxy resin in through hole
Rouge, the joint sealing of horn mouth cushion rubber.
3. a kind of coal seam containing gas impact failure according to claim 1 or 2 and electromagnetic radiation effect experimental apparatus for testing,
The nylon rod PA-66 cylinder, coal petrography sample, position need to guarantee its axis and hammer cylinder central axes on a vertical line, with true
Shock loading mean effort is protected in coal petrography sample upper surface.
4. a kind of coal seam containing gas impact failure according to claim 1 or 2 and electromagnetic radiation effect experimental apparatus for testing,
Load transfer device of the nylon rod PA-66 cylinder as tension weight churning load, to remove impact loading device and test macro
The influence of transient electromagnetic signal is generated to coal impact failure, the effect of the metallic shield net is to remove external environment to test
The interference that experimental system generates.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821083055.3U CN208672466U (en) | 2018-07-10 | 2018-07-10 | A kind of coal seam containing gas impact failure and electromagnetic radiation effect experimental apparatus for testing |
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| CN201821083055.3U CN208672466U (en) | 2018-07-10 | 2018-07-10 | A kind of coal seam containing gas impact failure and electromagnetic radiation effect experimental apparatus for testing |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110007059A (en) * | 2019-05-29 | 2019-07-12 | 河南理工大学 | Bump breaks coal containing methane gas experimental system for simulating and broken coal experimental method |
| CN111398073A (en) * | 2020-02-26 | 2020-07-10 | 辽宁工业大学 | Test device and method for simulating CFRP (carbon fiber reinforced plastics) reinforced coal sample impact disturbance |
-
2018
- 2018-07-10 CN CN201821083055.3U patent/CN208672466U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110007059A (en) * | 2019-05-29 | 2019-07-12 | 河南理工大学 | Bump breaks coal containing methane gas experimental system for simulating and broken coal experimental method |
| CN110007059B (en) * | 2019-05-29 | 2023-06-23 | 河南理工大学 | Impact ground pressure breaking gas-containing coal simulation experiment system and coal breaking experiment method |
| CN111398073A (en) * | 2020-02-26 | 2020-07-10 | 辽宁工业大学 | Test device and method for simulating CFRP (carbon fiber reinforced plastics) reinforced coal sample impact disturbance |
| CN111398073B (en) * | 2020-02-26 | 2023-05-05 | 辽宁工业大学 | CFRP reinforced coal sample impact disturbance simulation test device and method |
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