CN206756224U - A kind of coal petrography absorption deformation and porosity synchronous measurement device - Google Patents
A kind of coal petrography absorption deformation and porosity synchronous measurement device Download PDFInfo
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- CN206756224U CN206756224U CN201720626497.7U CN201720626497U CN206756224U CN 206756224 U CN206756224 U CN 206756224U CN 201720626497 U CN201720626497 U CN 201720626497U CN 206756224 U CN206756224 U CN 206756224U
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Abstract
The utility model belongs to technical field of mine safety,It is related to a kind of coal petrography absorption deformation and porosity synchronous measurement device,The strain transducer of adsorption tanks upper end and the first solid state gas pressure sensor wire are connected on multiple signals conditioner,Fixed installation gas pressure reducer and wire are connected to the second solid state gas pressure sensor on multiple signals conditioner in high pressure gas gas cylinder,The second mass flowmenter is installed on pipeline connection standard can and the pipeline in high pressure gas gas cylinder,Installation rotation platform below adsorption tanks,The x-ray source and ray detector of face adsorption tanks are fixedly mounted in the constant temperature air bath installed outside adsorption tanks,Installation data collection and analysis system on ray detector,Pipeline is connected with the first mass flowmenter and vacuum outgas pump on adsorption tanks,Degassing control valve and vacuum thermocouple meter are installed with vacuum outgas pump,Solve coal petrography adsorbed gas measure it is fixed during,Can not Simultaneous Determination coal sample absorption deformation and the problem of porosity.
Description
Technical field
The utility model belongs to technical field of mine safety, is related to a kind of coal petrography absorption deformation and is filled with porosity Simultaneous Determination
Put and method.
Background technology
Coal mine gas (also known as " coal bed gas ") be preservation in coal seam and its country rock, exist with absorption or free state
, the Unconventional gas using methane as main component.China's coal bed gas resource enriches, and is understood according to new round of resources evaluation：I
2000 meters of state is about 36.81 tcms with shallow Coal bed gas project, equivalent to 49,000,000,000 tons standard coals, arranges third place in the world
Position.It is economical but it is that coal bed gas gas output per well is too low that the cbm development industry development of current China, which has the reality that can not ignore,
Benefit is relatively low, and industry faces in straitened circumstances.Therefore, during " 13 ", further to promote China's CBM exploration and development industry
Development, essence breakthrough certainly will should be obtained in terms of basic theory and technical matters.Coal itself belongs to a kind of special porous media,
Its strong characterization of adsorption to methane gas makes it be different from other rocks., will after existing numerous studies show coal adsorption gas
Different degrees of dilatancy occurs, will further influence the porosity of coal.The porosity of coal is evaluation Reservoir Characteristics of Coal
Important indicator, and calculate the basis of coal seam gas-bearing capacity.At present, China generally uses《Coal and physical-mechanical properties of rock are surveyed
Determine method》In the block density of the Sealing Method enumerated or volumetric method measure coal, using bottle method or gas expansion method real density
The real density of analysis-e/or determining coal, and then calculate the porosity of coal.This kind of method can accurately determine coal sample and be free of gas bar
Porosity under part, but strong suction-operated between coal and methane gas be present, different gas pressures will cause coal sample
Different deformations.It is existing practice have shown that：Even if under the conditions of relatively low gas pressure, the deformation that coal adsorption gas triggers causes
The relative change of its porosity is maximum up to 17.98%.Therefore, by gas pressure and the mapping principle of coal porosity, as
Basis, the computational methods of porosity are modified, can be the evaluation of reservoir coal bed gas resource or Mine Gas Emission Prediction
Accurate foundation is provided.
In view of this, the utility model discloses a kind of Simultaneous Determination of coal petrography adsorbed gas scale of construction, deformation and porosity dress
Put, solve the measure coal petrography adsorbed gas of high pressure content method measure it is fixed during, can not Simultaneous Determination coal sample absorption deformation and hole
The problem of gap rate, accurate science can be provided for the solution formulation of coalbed gas in coal mine area development project and the evaluation of reservoir coal bed gas resource
Foundation.
Utility model content
In view of this, can not Simultaneous Determination coal sample during the utility model is in order to solve coal petrography adsorbed gas measurement calmly
The problem of absorption deformation and porosity, there is provided a kind of coal petrography absorption deformation and porosity synchronous measurement device.
To reach above-mentioned purpose, the utility model provides following technical scheme：Including adsorption tanks, multiple signals conditioner and
High pressure gas gas cylinder, adsorption tanks upper end lead are connected with strain transducer and the first solid state gas pressure sensor, strain sensing
Device and the first solid state gas pressure sensor wire are connected on multiple signals conditioner, are installed with high pressure gas gas cylinder
Gas pressure reducer and the second solid state gas pressure sensor, the second solid state gas pressure sensor wire are connected to multiple signals tune
Manage on device, the second mass flowmenter is installed on pipeline connection standard can and the pipeline in high pressure gas gas cylinder, standard can is with inhaling
Attached tank pipeline connection, adsorption tanks are provided with constant temperature air bath outside, and rotation platform is provided with below adsorption tanks, is consolidated in constant temperature air bath
Dingan County is equipped with the x-ray source and ray detector of face adsorption tanks, and data acquisition and analysis system are provided with ray detector,
Pipeline is connected with the first mass flowmenter and vacuum outgas pump on adsorption tanks, and flow control is installed with the first mass flowmenter
Valve processed, degassing control valve is installed with vacuum outgas pump, vacuum thermocouple meter is installed on vacuum outgas pump.
Further, the first control valve and the second control valve are installed with adsorption tanks, the first control valve is arranged on absorption
On the pipeline that tank communicates with the first mass flowmenter and vacuum outgas pump, the second control valve is arranged on standard can and connected with adsorption tanks
On the pipeline connect.
Further, vacuum piping is installed, vacuum thermocouple meter is connected to vacuum tube by wire and fastened on vacuum outgas pump.
Further, rotation platform includes the column spinner being fixedly mounted in the middle part of constant temperature air bath and is rotatably connected on column spinner
On rotating disk, adsorption tanks are fixedly mounted on the middle part of rotating disk, electric rotating machine are installed with rotating disk.
Further, x-ray source is fixedly mounted on the rotation platform in constant temperature air bath with ray detector by expansion link
Surrounding, x-ray source are connected with ray detector wire.
Further, resistance strain gage wire outlet is provided with the top of adsorption tanks, pacified on resistance strain gage wire outlet
Equipped with interface, the first solid state gas pressure sensing and strain transducer are installed on interface.
The utility model coal petrography absorption deformation and the test philosophy of porosity synchronous measurement device：
The purpose of the synchronous measurement device of the coal petrography adsorbed gas scale of construction of the present utility model, deformation and porosity is obtains coal sample
The adsorbed gas scale of construction, deformation and porosity under different adsorption gas balanced pressure conditions.Its principle is to glue resistance strain gage
After being attached to experiment coal sample surface, it is put into adsorption tanks, resistance strain gage wire is drawn via adsorption tanks upper end, should by resistance
The the first solid state gas pressure sensor and strain transducer become on piece wire outlet is connected with multiple signals conditioner, to
Measure the pressure of methane gas in adsorption tanks.By high pressure gas gas cylinder, gas pressure reducer makes the gas in high pressure gas gas cylinder
Gas by the second mass flowmenter, is then entered in standard can first, and the second mass flowmenter is to the gas into standard can
The scale of construction is measured.The second control valve set on adsorption tanks is then opened, the gas in standard can is entered equipped with coal sample
Adsorption tanks, and x-ray source, ray detector, rotation platform and the first solid state gas pressure sensor are opened simultaneously, respectively to coal
Gas pressure in the porosity of sample, deformation and adsorption tanks is monitored.After coal sample adsorption equilibrium, the strain ginseng of coal sample is read
Gas pressure parameter in number, adsorption tanks, coal sample is calculated using the equation of gas state in corresponding adsorption equilibrium gas pressure bar
Adsorption gas amount under part.
The utility model proposes the coal petrography adsorbed gas scale of construction, deformation and porosity synchronous measurement device test device,
The Simultaneous Determination of the adsorbed gas scale of construction of the coal sample during adsorbing, diffuse gas, deformation and porosity, the coal petrography can accurately be realized
The adsorbed gas scale of construction, deformation are with the method for testing of the synchronous measurement device of porosity compared with the method for testing of conventional test device
With advantages below：
1st, the test side of the synchronous measurement device of the distinctive coal petrography adsorbed gas scale of construction of the utility model, deformation and porosity
Method, deformation of the coal sample during adsorption gas, the variation characteristic of porosity can be monitored in real time, can be the thing of research coal containing methane gas
Manage characteristic and technical support is provided, and data acquisition is reliable, it is as a result accurate credible.
2nd, the test side of the synchronous measurement device of the coal petrography adsorbed gas scale of construction provided by the utility model, deformation and porosity
Method, porosity and adsorbance of the coal sample test specimen under the conditions of different adsorption equilibrium gas pressures can be accurately determined, it is resulting
Experimental data can further carry out numerical analysis, and fitting obtains the pass between adsorption equilibrium gas pressure and porosity, adsorbance
Connection, can be not only modified to Langmuir equations, while also the porosity under the conditions of different gas pressures can be modified,
The amendment that final achievable coal seam gas-bearing capacity calculates, is carried for accurate evaluation reservoir coal bed gas resource with coal and gas prominent danger
For scientific basis.
3rd, the test side of the synchronous measurement device of the coal petrography adsorbed gas scale of construction provided by the utility model, deformation and porosity
Method, porosity, adsorbed gas under the conditions of different adsorption equilibrium gas pressures are carried out measure timing, using gas pressure by low
Method that is paramount, being stepped up, before being tested only under minimum adsorption equilibrium gas pressure, it is de-gassed, it is simple to operate, and
After completing the adsorbed gas scale of construction under different adsorption gas balanced pressure conditions, deformation and porosity measurement, the port of export can be opened and set
The first mass flowmenter put, the measure that coal sample diffuses gas amount is carried out, provided reliably for research coal-bed gas diffusion mechanism
Technical support.
Brief description of the drawings
In order that the purpose of this utility model, technical scheme and beneficial effect are clearer, the utility model provides as follows
Accompanying drawing illustrates：
Fig. 1 is the utility model coal petrography absorption deformation and the structural representation of porosity synchronous measurement device.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail.
Reference in Figure of description includes：
First mass flowmenter 1, degassing control valve 2, vacuum piping 3, strain transducer 4, the first solid state gas pressure pass
It is sensor 5, vacuum outgas pump 6, x-ray source 7, standard can 8, rotation platform 9, ray detector 10, adsorption tanks 11, wire 12, true
Empty thermocouple meter 13, constant temperature air bath 14, the first control valve 15, the second control valve 16, gas pressure reducer 17, the second mass flowmenter
18th, the second solid state gas pressure sensor 19, high pressure gas gas cylinder 20, multiple signals conditioner 21, data acquisition and analysis system
System 22, flow control valve 23.
Coal petrography absorption deformation as shown in Figure 1 and porosity synchronous measurement device, including adsorption tanks 11, multiple signals are nursed one's health
Device 21 and high pressure gas gas cylinder 20, the top of adsorption tanks 11 set the outlet of resistance strain gage wire 12, resistance strain gage wire 12
Mounting interface on outlet, the first solid state gas pressure sensing and strain transducer 4 are installed on interface.Strain transducer 4 and
The wire 12 of one solid state gas pressure sensor 5 is connected on multiple signals conditioner 21, is fixedly mounted in high pressure gas gas cylinder 20
The solid state gas pressure sensor 19 of gas pressure reducer 17 and second, the wire 12 of the second solid state gas pressure sensor 19 are connected to more
On road signal conditioner 21.
Connected in high pressure gas gas cylinder 20 by pipeline and the second mass flowmenter 18 is installed in standard can 8 and the pipeline, marked
Quasi- tank 8 is inhaled with installing the second control valve 16 on the pipeline that the pipeline of adsorption tanks 11 is connected and standard can 8 is connected with the pipeline of adsorption tanks 11
Constant temperature air bath 14, the lower section of adsorption tanks 11 installation rotation platform 9 are installed, rotation platform 9 includes being fixedly mounted on perseverance outside attached tank 11
The column spinner at the middle part of warm air bath 14 and the rotating disk being rotatably connected on column spinner, adsorption tanks 11 are fixedly mounted on rotating disk
Middle part, electric rotating machine is installed with rotating disk.
Be fixedly mounted the x-ray source 7 and ray detector 10 of face adsorption tanks 11 in constant temperature air bath 14, x-ray source 7 with
Ray detector 10 is fixedly mounted on the surrounding of rotation platform 9 in constant temperature air bath 14, x-ray source 7 and ray by expansion link
The wire 12 of detector 10 connects.Installation data collection and analysis system 22 on ray detector 10.
Pipeline connects the first mass flowmenter 1 and vacuum outgas pump 6, the mass flow of adsorption tanks 11 and first on adsorption tanks 11
The first control valve 15 is installed on the pipeline that meter 1 and vacuum outgas pump 6 communicate, flow is fixedly mounted on the first mass flowmenter 1
Control valve 23, degassing control valve 2 is fixedly mounted on vacuum outgas pump 6 and vacuum piping 3, vacuum thermocouple meter 13 are connected by wire 12
It is connected on vacuum piping 3.
A kind of coal petrography absorption deformation and the method for testing of porosity synchronous measurement device, specifically include following steps：
S1：Coal sample to be measured is crushed, and screens out the coal dust of 0.2~0.25mm particle diameters, a certain amount of coal dust is pressed into and justified
In the mould of annulated column type, one-shot forming is cold-pressed, is taken out the circular ring type coal sample prepared using coring device, using sand paper to coal
Sample surface is polished, and makes its surfacing.
S2：The coal sample prepared is inserted in vacuum drying chamber processing is dried, time control is in more than 24h, finally
The size of coal sample is measured, the volume for recording coal sample is Vm, and be put into the hermetic bag marked.
S3：Slightly wear down coal sample surface with crosus cloth and wipe dedusting with alcohol after oxide layer to remove, then with quick colloid
Resistance strain gage is pasted on coal sample surface, and is compacted resistance strain gage to eliminate bubble, then with adhesive tape by resistance strain gage
Tightly paste on coal sample surface, be finally connected resistance strain gage with strain transducer 4 by wire 12；Wherein, resistance-strain
After piece wire 12 is drawn by the outlet of resistance strain gage wire 12 at the top of adsorption tanks 11, outlet is entered using epoxy resin
Row sealing, prevents gases at high pressure from flowing out；Interface connection first on the outlet of 11 top resistive foil gauge wire of adsorption tanks 12 is solid
State gas pressure sensor 5, determine the methane gas pressure value in adsorption tanks 11.
S4：The coal sample that surface is stained with to resistance strain gage is placed in adsorption tanks 11, opens vacuum outgas pump 6 and degassing control
Valve 2 is de-gassed to adsorption tanks 11, and influence of the air to test result is adsorbed under normal pressure to eliminate, treats that vacuum thermocouple meter 13 is aobvious
After registration value is less than 5 × 10-1Pa, stop deaerating to adsorption tanks 11；While opening vacuum outgas pump 6 and degassing control valve 2,
Strain to coal sample is monitored, and axial direction now and hoop strain are recorded after degassingεz0、εr0；Body after coal sample degassing
Product strain is εv0=εz0+2εr0, the volume after coal sample degassing is Vm0=(1+ εv0)Vm；Rotation platform 9, x-ray source 7 are opened with penetrating
Line detector 10 is scanned to the porosity of coal sample different layers position, and the hole rate score of different layers position is averaged to obtain
Take adsorbance be 0 when mean porosities Φ0；Adsorption tanks 11 are demarcated to coal sample volume before experiment, and are recorded its volume and be
Vx；Mean porosities Φ0Exported by data acquisition and analysis system 22；Wherein, while 7 transmission signal of x-ray source, rotary flat
Platform 9 slowly rotates, and passes data to data acquisition and analysis system 22 after the reception signal of ray detector 10, data acquisition and
After analysis system 22 receives the data of ray detector 10, data are analyzed, and then obtain the porosity of coal sample；Coal sample
Porosity according to coal sample upper surface, middle part cross section, lower surface porosity, acquisition of averaging.
S5：Gas pressure reducer 17 is opened, makes the methane gas in high pressure gas gas cylinder 20, via the second mass flowmenter 18
Enter in standard can 8, the pressure p of gas in standard can 8 is filled with by the second solid state gas pressure sensor 19 record1, lead to
The second mass flowmenter 18 record is crossed to be filled with the device in Gas scale of construction in standard can 8, standard can 8 and be connected thereto to adsorption tanks 11
The cumulative volume of pipeline, the pipeline being connected with the second mass flowmenter 18, is demarcated in experiment, and it is V to record its volumeb。
S6：The second control valve 16 is opened, the high pressure gas in standard can 8 is entered to the absorption equipped with coal sample via pipeline
In tank 11, after coal sample adsorption gas balance, gas pressure p now is recorded1p；Open rotation platform 9, x-ray source 7 and ray
Detector 10 is scanned to the porosity of coal sample different layers position, and the hole rate score of different layers position is averaged to obtain
Adsorption equilibrium pressure p1p；When mean porosities Φ1；Record adsorption equilibrium pressure p simultaneously1pWhen axial direction and hoop strain εz1、
εr1, it is ε to calculate corresponding coal sample bulk strainv1=εz1+2εr1, the volume after coal sample adsorption equilibrium is Vm1=(1+ εv1)Vm, then
Now the mole of coal sample adsorption gas is in adsorption tanks 11：
In formula：Z1、Z1pRespectively p1、p1pWhen, the compressibility factor of methane gas；n1For adsorption equilibrium pressure p1pWhen, coal sample
The mole of adsorption gas.
Adsorption equilibrium pressure p1pWhen, the adsorption gas amount V of coal samplexp1=22.4 × n1×1000。
S7：The second control valve 16 is closed, gas pressure reducer 17 is opened, continues to be filled with standard can 8 high pressure gas gas, is remembered
Record the gas pressure p of now standard can 82。
S8：The second control valve 16 is opened, the high pressure gas in standard can 8 is entered in adsorption tanks 11, treats that coal sample is adsorbed
After mash gas balancing, adsorption equilibrium gas pressure p now is recorded2p；Open rotation platform 9, x-ray source 7 and ray detector 10
The porosity of coal sample different layers position is scanned, the hole rate score of different layers position is averaged to obtain adsorption equilibrium
Pressure p2pWhen mean porosities Φ2；And adsorption equilibrium pressure P is recorded simultaneously2pWhen axial direction and hoop strain εz2、εr2, calculate
Corresponding coal sample bulk strain is εv2=εz2+2εr2, the volume after coal sample adsorption equilibrium is Vm2=(1+ εv2)Vm, then now adsorb
The mole of coal sample adsorption gas is in tank 11：
In formula：Z2、Z2pRespectively p2、p2pWhen, the compressibility factor of methane gas；n2For adsorption equilibrium pressure p2pWhen, coal sample
The mole of adsorption gas.
Adsorption equilibrium pressure p2pWhen, the adsorption gas amount V of coal samplexp2=22.4 × n2×1000。
S9：S7, S8 are repeated, is accordingly filled with the gas pressure p of standard can 8i, and adsorption equilibrium gas pressure pip, it is average
Porosity Φi, adsorption equilibrium pressure pipWhen axial direction and hoop strain εzi、εri, corresponding coal sample bulk strain is εvi=
εzi+2εri, the volume after coal sample adsorption equilibrium is Vmi=(1+ εvi)Vm, then now in adsorption tanks 11 coal sample adsorption gas mole
Measure niFor：
In formula：Zi、ZipRespectively pi、pipWhen, the compressibility factor of methane gas；niFor adsorption equilibrium pressure pipWhen, coal sample
The mole of adsorption gas.
Adsorption equilibrium pressure pipWhen, the adsorption gas amount V of coal samplexpi=22.4 × ni×1000。
S10：After test under predetermined maximum adsorption balanced pressure condition to be done, the second control valve 16 is closed, opens the
One control valve 15, the mass flowmenter 1 of flow control valve 23 and first, make the high pressure gas in adsorption tanks 11, via the first mass
Flowmeter 1 flows out；After a high pressure gas outflow part in tank 11 to be adsorbed, the first mass flowmenter 1 can accurately record outflow
Partial gas amount, the free gas in adsorption tanks 11 are pressed according to the porosity after balance and coal sample bulk strain with reference to balance
Power is calculated, and further obtains the adsorbance under corresponding balance gas pressure.
S11：S10 is repeated, obtains coal sample during gas is diffused, any adsorbance balanced under pressure, porosity, directly
Emptied to by the high pressure gas in adsorption tanks 11.
Finally illustrate, preferred embodiment above is only unrestricted to illustrate the technical solution of the utility model, to the greatest extent
The utility model has been described in detail by above preferred embodiment for pipe, but those skilled in the art should manage
Solution, can make various changes, without departing from the utility model claims book institute to it in the form and details
The scope of restriction.
Claims (6)
1. a kind of coal petrography absorption deformation and porosity synchronous measurement device, it is characterised in that nursed one's health including adsorption tanks, multiple signals
Device and high pressure gas gas cylinder, the adsorption tanks upper end lead are connected with strain transducer and the first solid state gas pressure sensor,
The strain transducer and the first solid state gas pressure sensor wire are connected on multiple signals conditioner, the high pressure gas
Gas pressure reducer and the second solid state gas pressure sensor, the second solid state gas pressure sensor are installed with gas cylinder
Wire is connected on multiple signals conditioner, and the is provided with pipeline connection standard can and the pipeline in the high pressure gas gas cylinder
Two mass flowmenters, the standard can are connected with adsorption tanks pipeline, and constant temperature air bath, the absorption are provided with outside the adsorption tanks
Rotation platform is installed below tank, the x-ray source and X-ray detection X of face adsorption tanks are installed with the constant temperature air bath
Device, data acquisition and analysis system are installed on the ray detector, pipeline is connected with the first quality stream on the adsorption tanks
Gauge and vacuum outgas pump, are installed with flow control valve on first mass flowmenter, solid on the vacuum outgas pump
Dingan County is equipped with degassing control valve, and vacuum thermocouple meter is provided with the vacuum outgas pump.
2. coal petrography absorption deformation as claimed in claim 1 and porosity synchronous measurement device, it is characterised in that the adsorption tanks
On be installed with the first control valve and the second control valve, first control valve is arranged on adsorption tanks and the first mass flowmenter
On the pipeline communicated with vacuum outgas pump, second control valve is arranged on standard can with adsorbing on tank connected pipeline.
3. coal petrography absorption deformation as claimed in claim 2 and porosity synchronous measurement device, it is characterised in that the vacuum takes off
Vacuum piping is installed, the vacuum thermocouple meter is connected to vacuum tube by wire and fastened on air pump.
4. coal petrography absorption deformation as claimed in claim 3 and porosity synchronous measurement device, it is characterised in that the rotary flat
Platform includes the column spinner being fixedly mounted in the middle part of constant temperature air bath and the rotating disk being rotatably connected on column spinner, the adsorption tanks
The middle part of rotating disk is fixedly mounted on, electric rotating machine is installed with the rotating disk.
5. coal petrography absorption deformation as claimed in claim 4 and porosity synchronous measurement device, it is characterised in that the X ray
Source is fixedly mounted on the rotation platform surrounding in constant temperature air bath with ray detector by expansion link, and the x-ray source is with penetrating
Line detector wire connects.
6. coal petrography absorption deformation as claimed in claim 5 and porosity synchronous measurement device, it is characterised in that the adsorption tanks
Top is provided with resistance strain gage wire outlet, and interface, the interface are provided with the resistance strain gage wire outlet
The first solid state gas pressure sensing of upper installation and strain transducer.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107202744A (en) * | 2017-05-27 | 2017-09-26 | 中煤科工集团重庆研究院有限公司 | A kind of coal petrography absorption deformation and porosity synchronous measurement device and method |
| CN109119176A (en) * | 2018-08-24 | 2019-01-01 | 西安交通大学 | The device and method of measurement fluid void fraction is combined with visualization using gamma-rays |
| CN113702261A (en) * | 2021-08-25 | 2021-11-26 | 中煤科工集团重庆研究院有限公司 | Test analysis method for porosity and deformation correction of gas-containing coal |
| CN114062191A (en) * | 2021-11-17 | 2022-02-18 | 中国地质大学（北京） | Displacement adsorption experimental device and experimental method for binary gas in porous medium |
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2017
- 2017-05-27 CN CN201720626497.7U patent/CN206756224U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107202744A (en) * | 2017-05-27 | 2017-09-26 | 中煤科工集团重庆研究院有限公司 | A kind of coal petrography absorption deformation and porosity synchronous measurement device and method |
| CN107202744B (en) * | 2017-05-27 | 2019-09-03 | 中煤科工集团重庆研究院有限公司 | A kind of coal petrography absorption deformation and porosity synchronous measurement device and method |
| CN109119176A (en) * | 2018-08-24 | 2019-01-01 | 西安交通大学 | The device and method of measurement fluid void fraction is combined with visualization using gamma-rays |
| CN113702261A (en) * | 2021-08-25 | 2021-11-26 | 中煤科工集团重庆研究院有限公司 | Test analysis method for porosity and deformation correction of gas-containing coal |
| CN113702261B (en) * | 2021-08-25 | 2023-11-03 | 山东科技大学 | Test analysis method for correcting porosity and deformation of gas-containing coal |
| CN114062191A (en) * | 2021-11-17 | 2022-02-18 | 中国地质大学（北京） | Displacement adsorption experimental device and experimental method for binary gas in porous medium |
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