CN110361265A - After mining reactive polymer material slip casting with the characteristic method for continuously measuring and device of coal petrography mixture - Google Patents
After mining reactive polymer material slip casting with the characteristic method for continuously measuring and device of coal petrography mixture Download PDFInfo
- Publication number
- CN110361265A CN110361265A CN201910726089.2A CN201910726089A CN110361265A CN 110361265 A CN110361265 A CN 110361265A CN 201910726089 A CN201910726089 A CN 201910726089A CN 110361265 A CN110361265 A CN 110361265A
- Authority
- CN
- China
- Prior art keywords
- coal
- sample
- rock
- rock sample
- coal sample
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
- G01N1/08—Devices for withdrawing samples in the solid state, e.g. by cutting involving an extracting tool, e.g. core bit
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
- G01N15/0826—Investigating permeability by forcing a fluid through a sample and measuring fluid flow rate, i.e. permeation rate or pressure change
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/22—Fuels, explosives
- G01N33/222—Solid fuels, e.g. coal
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
- G01N2001/2873—Cutting or cleaving
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Remote Sensing (AREA)
- Fluid Mechanics (AREA)
- Dispersion Chemistry (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The present invention relates to after coal mine reactive polymer material slip casting with coal petrography mixing bulk properties method for continuously measuring and device, after being plastically deformed coal (rock) body by load, reactive polymer material slurry is injected into the centre bore of coal (rock) sample, mobility status of the simulation reaction type high molecular material slurries in coal (rock) body secondary interstice, the temperature variations of coal (rock) body after high molecular material are injected by the comprehensive test of temperature measurement port being set on heat preservation cylinder, reliable technological means is provided for mining reactive polymer material security application feasibility analysis；The infiltration coefficient of coal (rock) body after reactive polymer material, application effect of the characterization injection reactive polymer material to coal (rock) body water-blocking operation are injected by measurement；By the contrast test to coal (rock) body uniaxial compressive strength before and after injection reactive polymer material, reflection injection reactive polymer material front and back is to the consolidation effect that plastic deformation coal (rock) body occurs.
Description
Technical field
The invention belongs to technical field of mine safety, it is related to mixed with coal petrography after a kind of mining reactive polymer material slip casting
Fit characteristic method for continuously measuring and device.
Background technique
The high-efficiency cleaning low-carbon of coal is using the most important thing for being society, and the relevant technologies are towards advantageous direction
Development.The clean utilization for carrying forward vigorously coal helps to push social production of energy consumption pattern revolution.But simultaneously as coal mine
Down-hole coal bed complex geologic conditions, the mine of many coal seam group minings are all made of the recovery method of " downstriker ", it is intended to by opening
Mining coal seam is allowed to form the exploitation in coal seam of underliing the antireflective effect of release, reduces the threat degree for the coal-bed gas disaster that underlies.
But in the developing in coal seam of underliing, recovery process, due to above covering the exploitation in coal seam and the seam roof that underlie is usually located at
In fissure zone, thus its improving stability of surrounding rocks in roadway is poor, and control difficulty increases.And with the increase of mining depth, coal is covered from above
The mining induced stress intensity that layer exploitation is formed is higher, and Affected areas by mining is bigger, and the time of mining influence is also longer, therefore underlies
The maintenance of heading becomes as the critical issue of mine urgent need to resolve.
For this problem, at present other than improving to drift support type, most of mines are all made of top plate note
The technique for entering reactive polymer material implements consolidation process to top plate.Practical this kind of technique cross cut coal uncovering in coal mine underground with
It adopts, dig tunnel by also having large-scale application in the prevention and cure project of tomography and mine water disaster.But due to reactive polymer
Material will generate a large amount of reaction heat during cured, and it is evaluation response type that whether this kind of heat, which will lead to coal spontaneous combustion occurs,
The key point of high molecular material application feasibility.Meanwhile reactive polymer material is intracorporal secondary with coal (rock) after hardening
The mixture of raw crack fitting and formation, it is also mine selection that whether Penetration Signature, intensity, which meet water blockoff or the requirement of reinforcing,
The emphasis which kind of reactive polymer material is considered.Coal industry still has no relevant test method or equipment to response type at present
Implement METHOD FOR CONTINUOUS DETERMINATION with the temperature, Penetration Signature and intensity of coal (rock) mixture after high molecular material slip casting.
Summary of the invention
In view of this, the purpose of the present invention is to provide mixed with coal petrography after a kind of reactive polymer material slip casting of coal mine
Fit temperature, Penetration Signature, intensity method for continuously measuring and device can measure in injection reactive polymer materials process
The Penetration Signature of coal (rock) test specimen after plastic deformation and the temperature of different location, and can realize injection reactive polymer material
The contrast test of material front and back coal (rock) test piece intensity, is the security performance and operation effectiveness of scientific evaluation reactive polymer material
Reliable technological means is provided.
An object of the present invention is achieved through the following technical solutions:
A kind of characteristic method for continuously measuring after mining reactive polymer material slip casting with coal petrography mixture, including it is following
Step:
S1: coal (rock) sample that underground coal mine acquires is cut into cylinder type；Then on the center edge of coal (rock) sample
Axial direction digs drilling, and penetrates coal (rock) sample；
S2: torus moulded coal (rock) sample prepared is placed on steel substrate, and with heat preservation cylinder by coal (rock) sample
Circumferential direction package, steel lamina tecti is placed at the top of coal (rock) sample, spring is placed in the centre-drilling hole of coal (rock) sample,
It is then whole to be placed on pressurizing device；
S3: opening pressurizing device and gradually apply axial stress to coal (rock) sample, by the stress-strain for observing coal (rock) sample
After curve to reach to peak value, stop pressurization, and record axial stress numerical value at this time；
S4: the temperature measurement port kept the temperature on cylinder is connected with temperature sensor, and prepared response type is high
Molecular material slurries are poured into the centre-drilling hole of coal (rock) sample, using hardboard to the reactive polymer material in centre-drilling hole
Material forms restrained boundary；
S5: recording the registration of temperature sensor in each temperature measurement port, until temperature sensor in continuous 120min
Registration changes less than 0.5 DEG C；
S6: after to temperature test, coal (rock) sample being taken out, and removes the height after reaction solidifies in coal (rock) sample centre bore
Molecular material and spring, with the lower end surface that epoxy resin is uniformly applied to coal (rock) sample, then by seal gasket and ring
The bonding of oxygen resin layer, and be placed in infiltration cylinder bottom plate；Infiltration cylinder bottom plate and ring packing bucket are connected with simultaneously tight
Gu；
S7: epoxy resin is uniformly applied to the upper surface of coal (rock) sample, then glues seal gasket and epoxy resin layer
It closes, infiltration cylinder body top plate is placed on epoxy resin layer, blending bolt will permeate cylinder body top plate and ring packing bucket bolt
It connects and fastens；
S8: the valve of inlet end is opened, and air inlet is connected to high-pressure helium gas source, the pressure for adjusting helium makes it
Predetermined value；The valve for then opening outlet side, makes high-pressure helium under the action of the pressure difference of inlet end and outlet side, via
The annular entity of coal (rock) sample flows to outlet side, and reads the numerical value of outlet side flowmeter, after its numerical stability, remembers immediately
Helium atmosphere flow under record at this time, and then corresponding infiltration coefficient numerical value can be obtained；
S9: after coal (rock) sample infiltration coefficient is completed, bolt, the ring packing of infiltration cylinder body top plate and bottom plate are unloaded
Bucket, application blade strike off seal gasket；Then coal (rock) sample is placed on steel substrate, and the steel of coal (rock) sample will be placed with
Bottom plate processed is installed below pressurizing device, and pressurizing device is then opened, and repeats S3, then test finishes.
Further, step S1 specifically includes the following steps:
S11: being cut into diameter 200mm for coal (rock) sample that underground coal mine acquires, and after the cylinder type of height 400mm, uses
Sand paper is polished in coal (rock) sample end face with annular surface, then on the basis of coal (rock) sample end face center, uses vernier caliper
The distance on four orthogonal directions of end face center is measured, if the deviation of any two test is less than 0.5mm, coal (rock) sample ruler cun
Meet test requirements document；
S12: the center of coal (rock) sample in axial direction, using coring device to the diameter 200mm of preparation, height
Cylindrical briquette (rock) sample of 400mm carries out coring, it is made to be centrally formed the drilling of diameter 40mm, the depth and coal (rock) of coring
Sample height is equal.
Further, step S2 specifically includes the following steps:
S21: it is slightly larger than the circular groove of coal (rock) sample outer diameter on the steel substrate with diameter, to coal (rock) sample
It is positioned；The heat preservation cylinder material is polystyrene foam plastics, and its role is to completely cut off injection reactive polymer material
Coal (rock) sample and extraneous temperature after material；The steel lamina tecti is annular shape, and internal diameter is slightly less than the internal diameter of coal (rock) sample, outside
Diameter is slightly larger than coal (rock) sample outer diameter；
S22: the spring is placed in the centre bore of coal (rock) sample, and outer diameter is equal with the internal diameter of steel lamina tecti, high
Degree is flushed with the upper surface of steel lamina tecti, during its role is to pressurizing devices to the pressurization of coal (rock) sample, will generate one
Determine the compressive deformation of degree, compressive deformation will also occur therewith for spring, which makes between the ring of spring and ring
Gap reduces, and falls off to prevent the coal (rock) of coal (rock) sample inner surface from considering to be worth doing.
Further, step S4 specifically includes the following steps:
S41: after axial stress numerical value when recording load-deformation curve to reach to peak value, steel lamina tecti is removed；It will protect
The temperature measurement port being arranged on warm cylinder is connect with temperature sensor；The temperature measurement port is using coal (rock) sample center as base
Standard, every 60 ° are arranged one, and six are one group；Along coal (rock) sample axial direction on the basis of apart from end face 50mm plane, every 50mm
Arrange one group；The temperature sensor is ultrasonic temperature sensor, but is not limited only to this kind of temperature sensor；
S42: a certain amount of reactive polymer material slurry is injected into the centre bore of coal (rock) sample, using hardboard
The upper surface for covering coal (rock) sample is allowed to that the high molecular material slurries in injection centre bore is stopped to overflow because of expansion.
Further, step S5 specifically includes the following steps:
S51: after self seeding high molecular material slurries, opening temperature sensor immediately, and each temperature is recorded at interval of 10s
Spend sensor registration with it is corresponding at the time of；
S52: until when the registration of temperature sensor is changed less than 0.5 DEG C in continuous 120min, temperature sensing is stopped recording
The registration of device；In observation coal (rock) sample the temperature of each test point whether be more than 140 DEG C specified in AQ1089-2011, if
It has been more than the temperature, then the reactive polymer material is unsatisfactory for the requirement of engineer application.
Further, step S6 specifically includes the following steps:
S61: after to temperature test, the center of coal (rock) sample in axial direction, using coring device to coal
(rock) sample carries out coring, removes the high molecular material after reaction solidifies in coal (rock) sample centre bore, it is made to be centrally formed diameter
The drilling of 40mm；On the lower end surface of coal (rock) sample, uniformly applies and spread epoxy resin, and seal gasket and epoxy resin layer are glued
It closes；The epoxy resin is used to be sealed the lower end surface of coal (rock) sample, prevents in coal (rock) sample air transmission coefficient continuous mode,
Test gas flows out through lower end surface and influences test measurement result；The seal gasket is rubber material, is that step is discoid,
The minor diameter of seal gasket is equal with the diameter of circular groove in infiltration cylinder bottom plate, and the major diameter of seal gasket is greater than small straight
Diameter；The infiltration cylinder bottom plate center is equipped with the cylinder that height is greater than the sum of seal gasket thickness and coal (rock) sample height, and circle
Column is equipped with intensive aperture, to guarantee that gas enters in coal (rock) sample body from the aperture of cylinder；
S62: the infiltration cylinder bottom plate and ring packing bucket both ends are equipped with corresponding flange, and spiral shell is offered on flange
Keyhole is fastened by bolts infiltration cylinder bottom plate and ring packing bucket, and the outer rim for squeezing seal gasket is realized to coal (rock) sample bottom
The sealing of end face；The ring packing bucket internal layer is equipped with sieve pore, and ring packing bucket internal diameter is greater than the outer diameter of coal (rock) sample, makes
It obtains test gas and flows out its annular surface via coal (rock) sample centre bore, by sieve pore, and by being set to ring packing bucket outer wall
On gas outlet outflow.
Further, step S7 specifically includes the following steps:
S71: on the upper surface of coal (rock) sample, uniformly applying and spread epoxy resin, and by seal gasket and epoxy resin layer
Bonding；The epoxy resin prevents coal (rock) sample air transmission coefficient continuous mode for being sealed to the upper surface of coal (rock) sample
In, test gas flows out through upper surface and influences test measurement result；
S72: the infiltration cylinder body top plate is identical as infiltration cylinder bottom plate size, and infiltration cylinder body top plate top offers
Air inlet, for providing channel for the flowing of test gas；Cylinder body top plate will be permeated with bolt to connect with ring packing bucket bolt
It connects and fastens.
Further, step S8 specifically includes the following steps:
S81: the valve of the inlet end is installed in the air inlet on air inlet pipeline, on air inlet pipeline and infiltration cylinder body top plate
Connection；The valve of inlet end is opened, and connects high-pressure helium gas source；The high-pressure helium gas source and coal (rock) body are without any physics
Chemical reaction, therefore the test for applying the gas to carry out coal (rock) body infiltration coefficient reflects its own choked flow attribute to medium；
S82: the high-pressure helium gas source is connect with air inlet pipeline by pressure reducing valve, its role is to control coal (rock) sample into
The helium atmosphere pressure value at gas end；
S83: pressure reducing valve is adjusted, so that the helium atmosphere pressure value of inlet end is met test requirements document, then opens outlet side
Valve, and record the numerical value of outlet side flowmeter；The outlet side flow is calculated as mass flowmenter, but is not limited only to the type
The flowmeter of type；
S84: to outlet side flowmeter registration in continuous 1h, when relative deviation is less than 1%, indicate that the flowing of helium has reached
Stable state has been arrived, has recorded helium atmosphere flow at this time immediately, and then obtain corresponding infiltration coefficient numerical value；The coal
(rock) sample infiltration coefficient is calculated as the following formula:
In formula: q is unit area helium gas flow, m3/(m2.d)；R1For the internal diameter of coal (rock) sample, m；R0For coal (rock) sample
Outer diameter, m；p0For the helium atmosphere pressure of coal (rock) sample inlet end, MPa；p1For the helium atmosphere pressure of coal (rock) sample outlet side,
MPa；λ is coal (rock) sample infiltration coefficient, m2/(MPa2.d)。
Further, step S9 specifically includes the following steps:
S91: after coal (rock) sample infiltration coefficient is completed, bolt, the annular for unloading infiltration cylinder body top plate and bottom plate are close
Feng Tong, application blade strike off seal gasket；
S92: coal (rock) sample is placed on steel substrate, and the steel substrate for being placed with coal (rock) sample is installed in pressurization
Below device, pressurizing device is then opened, repeats S3, until coal (rock) sample load-deformation curve stops immediately after reaching peak value
Pressurization, and record axial stress at this time；
S93: when reaching peak value by coal (rock) sample load-deformation curve before and after comparison injection reactive polymer material
Axial stress, judge this kind of high molecular material to the function and effect of reinforcing；If injecting the coal after reactive polymer material
Before axial stress when (rock) sample load-deformation curve reaches peak value is greater than injection, then show this kind of high molecular material to reinforcing
There are apparent effective effect, on the contrary then nothing.
On the other hand, the present invention provides and connects after a kind of mining reactive polymer material slip casting with the characteristic of coal petrography mixture
Continuous measurement device, including cylindrical coal (rock) sample, cylinder coal (rock) the sample center, which is in axial direction run through, offers drilling,
Coal (rock) sample bottom is provided with steel substrate, and top is equipped with steel lamina tecti, is provided with spring in the drilling, is also inoculated with
High molecular material slurries and the hardboard that its boundary is constrained；It further include the heat preservation circle for wrapping up coal (rock) sample outer wall
Cylinder, the heat preservation cylinder are equipped with multiple temperature measurement ports, and the temperature sensor connecting with temperature measurement port, also wrap
The press machine for applying axial stress to the coal (rock) sample is included, the press machine can show axial stress numerical value and answer
Force-strain curve.
By the present apparatus, the temperature and strength characteristics after mining high molecular material slip casting with coal petrography mixture, tool can detect
Body is as follows:
Axial stress is gradually applied to coal (rock) sample by cracking pressure machine, by the stress-strain for observing coal (rock) sample
It after curve to reach to peak value, can stop pressurizeing, and record axial stress numerical value at this time, with detection intensity characteristic.
After injecting high molecular material slurries, opening temperature sensor, and each temperature sensor is recorded at interval of 10s
Registration with it is corresponding at the time of；Until can be stopped recording when the registration of temperature sensor is changed less than 0.5 DEG C in continuous 120min
The registration of temperature sensor.Whether the temperature for observing each test point in coal (rock) sample has been more than specified in AQ1089-2011
140 DEG C, if being more than the temperature, which is unsatisfactory for the requirement of engineer application.
Connect after a kind of mining reactive polymer material slip casting in another aspect, the present invention provides with the characteristic of coal petrography mixture
Continuous measurement device, including cylindrical coal (rock) sample in ring packing bucket and ring packing bucket, described cylinder coal (rock) sample
Center, which is in axial direction run through, offers drilling, and coal (rock) the sample upper surface and lower end surface are equipped with epoxy resin layer, and
Seal gasket is bonded on the epoxy resin layer of two sides, the seal gasket of the lower end surface is connected with infiltration cylinder bottom plate, described
Upper surface is connected with infiltration cylinder body top plate, and the ring packing bucket is connect with infiltration cylinder bottom plate, infiltration cylinder body top plate seal；Institute
Stating ring packing bucket includes internal layer and outer layer, and the internal layer is equipped with sieve pore, and the outer layer is equipped with gas outlet, the gas outlet
On be connected with outlet pipe, the outlet pipe is equipped with outlet side valve and outlet side flowmeter；The infiltration cylinder bottom plate
Middle part is equipped with the tube bundle across drilling, offers intensive aperture on the tube bundle；In the infiltration cylinder body top plate
The heart is equipped with connection drilling and external air inlet, connects air inlet pipeline, is provided with inlet end valve on the air inlet pipeline and subtracts
Pressure valve, the air inlet pipeline connect high-pressure helium gas source.
By the present apparatus, the Penetration Signature after mining high molecular material slip casting with coal petrography mixture can detect, specific as follows:
High-pressure helium gas source and coal (rock) body apply the gas to carry out the infiltration of coal (rock) body without any physical-chemical reaction
The test of coefficient can the reflection of objective its own choked flow attribute to medium；The high-pressure helium gas source and air inlet pipeline are logical
Pressure reducing valve connection is crossed, its role is to control the helium atmosphere pressure value of coal (rock) sample inlet end；Pressure reducing valve is adjusted, air inlet is made
The helium atmosphere pressure value at end meets test requirements document, then opens the valve of outlet side, and records the number of outlet side flowmeter
Value；The outlet side flow is calculated as mass flowmenter, but is not limited only to the flowmeter of this type；To outlet side flowmeter registration
In continuous 1h, when relative deviation is less than 1%, it is believed that the flowing of helium has had reached stable state, records immediately at this time
Helium atmosphere flow, and then corresponding infiltration coefficient numerical value can be obtained；Coal (rock) the sample infiltration coefficient is counted as the following formula
It calculates:
In formula: q is unit area helium gas flow, m3/(m2.d)；R1For the internal diameter of coal (rock) sample, m；R0For coal (rock) sample
Outer diameter, m；p0For the helium atmosphere pressure of coal (rock) sample inlet end, MPa；p1For the helium atmosphere pressure of coal (rock) sample outlet side,
MPa；λ is coal (rock) sample infiltration coefficient, m2/(MPa2.d)。
The beneficial effects of the present invention are:
The invention discloses the temperature after a kind of reactive polymer material slip casting of coal mine with coal petrography mixture, infiltration are special
Property, intensity method for continuously measuring and device, after being plastically deformed coal (rock) body by load, by reactive polymer material
Slurries are injected into the centre bore of coal (rock) sample, stream of the simulation reaction type high molecular material slurries in coal (rock) body secondary interstice
Emotionally condition, and coal (rock) body after high molecular material is injected in the comprehensive test of temperature measurement port by being set on heat preservation cylinder
Temperature variations, reliable technological means can be provided for mining reactive polymer material security application feasibility analysis；
The infiltration coefficient of coal (rock) body after reactive polymer material is injected by measurement, accurate characterization injects reactive polymer material
To the application effect of coal (rock) body water-blocking operation；By strong to coal (rock) body uniaxial compressive before and after injection reactive polymer material
The contrast test of degree can be plastically deformed coal (rock) body to generation before and after the reflection injection reactive polymer material of objective
Consolidation effect implements the security performance of the operations such as roof reinforcement, water blockoff for evaluation injection reactive polymer material and application is imitated
Fruit provides technical support.
Other advantages, target and feature of the invention will be illustrated in the following description to a certain extent, and
And to a certain extent, based on will be apparent to those skilled in the art to investigating hereafter, Huo Zheke
To be instructed from the practice of the present invention.Target of the invention and other advantages can be realized by following specification and
It obtains.
Detailed description of the invention
To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention is made below in conjunction with attached drawing excellent
The detailed description of choosing, in which:
Fig. 1 is continuous with temperature, the intensity of coal petrography mixture after mining reactive polymer material slip casting of the present invention
Assay device structures schematic diagram；
Fig. 2 continuously surveys for the Penetration Signature after mining reactive polymer material slip casting of the present invention with coal petrography mixture
Determine apparatus structure schematic diagram.
Appended drawing reference: 1- coal (rock) sample；2- keeps the temperature cylinder；3- spring；4- temperature measurement port；5- steel lamina tecti；6-
Steel substrate；7- permeates cylinder bottom plate；8- ring packing bucket；9- epoxy resin layer；10- seal gasket；11- permeates cylinder body top
Plate；12- outlet pipe；13- air inlet pipeline；14- inlet end valve；15- pressure reducing valve；The outlet side 16- flowmeter；17- air inlet；
The gas outlet 18-.
Specific embodiment
Illustrate embodiments of the present invention below by way of specific specific example, those skilled in the art can be by this specification
Other advantages and efficacy of the present invention can be easily understood for disclosed content.The present invention can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also based on different viewpoints and application, without departing from
Various modifications or alterations are carried out under spirit of the invention.It should be noted that diagram provided in following embodiment is only to show
Meaning mode illustrates basic conception of the invention, and in the absence of conflict, the feature in following embodiment and embodiment can phase
Mutually combination.
Wherein, the drawings are for illustrative purposes only and are merely schematic diagrams, rather than pictorial diagram, should not be understood as to this
The limitation of invention；Embodiment in order to better illustrate the present invention, the certain components of attached drawing have omission, zoom in or out, not
Represent the size of actual product；It will be understood by those skilled in the art that certain known features and its explanation may be omitted and be in attached drawing
It is understood that.
The same or similar label correspond to the same or similar components in the attached drawing of the embodiment of the present invention；It is retouched in of the invention
In stating, it is to be understood that if there is the orientation or positional relationship of the instructions such as term " on ", "lower", "left", "right", "front", "rear"
To be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description of the present invention and simplification of the description, rather than indicate or
It implies that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore is described in attached drawing
The term of positional relationship only for illustration, is not considered as limiting the invention, for the ordinary skill of this field
For personnel, the concrete meaning of above-mentioned term can be understood as the case may be.
On the one hand, the characteristic method for continuously measuring after a kind of mining reactive polymer material slip casting with coal petrography mixture,
The following steps are included:
S1: coal (rock) sample that underground coal mine acquires is cut into cylinder type；Then on the center edge of coal (rock) sample
Axial direction digs drilling, and penetrates coal (rock) sample；
S2: torus moulded coal (rock) sample prepared is placed on steel substrate, and with heat preservation cylinder by coal (rock) sample
Circumferential direction package, steel lamina tecti is placed at the top of coal (rock) sample, spring is placed in the centre-drilling hole of coal (rock) sample,
It is then whole to be placed on pressurizing device；
S3: opening pressurizing device and gradually apply axial stress to coal (rock) sample, by the stress-strain for observing coal (rock) sample
After curve to reach to peak value, stop pressurization, and record axial stress numerical value at this time；
S4: the temperature measurement port kept the temperature on cylinder is connected with temperature sensor, and prepared response type is high
Molecular material slurries are poured into the centre-drilling hole of coal (rock) sample, using hardboard to the reactive polymer material in centre-drilling hole
Material forms restrained boundary；
S5: recording the registration of temperature sensor in each temperature measurement port, until temperature sensor in continuous 120min
Registration changes less than 0.5 DEG C；
S6: after to temperature test, coal (rock) sample being taken out, and removes the height after reaction solidifies in coal (rock) sample centre bore
Molecular material and spring, with the lower end surface that epoxy resin is uniformly applied to coal (rock) sample, then by seal gasket and ring
The bonding of oxygen resin layer, and be placed in infiltration cylinder bottom plate；Infiltration cylinder bottom plate and ring packing bucket are connected with simultaneously tight
Gu；
S7: epoxy resin is uniformly applied to the upper surface of coal (rock) sample, then glues seal gasket and epoxy resin layer
It closes, infiltration cylinder body top plate is placed on epoxy resin layer, blending bolt will permeate cylinder body top plate and ring packing bucket bolt
It connects and fastens；
S8: the valve of inlet end is opened, and air inlet is connected to high-pressure helium gas source, the pressure for adjusting helium makes it
Predetermined value；The valve for then opening outlet side, makes high-pressure helium under the action of the pressure difference of inlet end and outlet side, via
The annular entity of coal (rock) sample flows to outlet side, and reads the numerical value of outlet side flowmeter, after its numerical stability, remembers immediately
Helium atmosphere flow under record at this time, and then corresponding infiltration coefficient numerical value can be obtained；
S9: after coal (rock) sample infiltration coefficient is completed, bolt, the ring packing of infiltration cylinder body top plate and bottom plate are unloaded
Bucket, application blade strike off seal gasket；Then coal (rock) sample is placed on steel substrate, and the steel of coal (rock) sample will be placed with
Bottom plate processed is installed below pressurizing device, and pressurizing device is then opened, and repeats S3, then test finishes.
Step S1 specifically includes the following steps:
S11: being cut into diameter 200mm for coal (rock) sample that underground coal mine acquires, and after the cylinder type of height 400mm, uses
Sand paper is polished in coal (rock) sample end face with annular surface, then on the basis of coal (rock) sample end face center, uses vernier caliper
The distance on four orthogonal directions of end face center is measured, if the deviation of any two test is less than 0.5mm, coal (rock) sample ruler cun
Meet test requirements document；
S12: the center of coal (rock) sample in axial direction, using coring device to the diameter 200mm of preparation, height
Cylindrical briquette (rock) sample of 400mm carries out coring, it is made to be centrally formed the drilling of diameter 40mm, the depth and coal (rock) of coring
Sample height is equal.
Step S2 specifically includes the following steps:
S21: it is slightly larger than the circular groove of coal (rock) sample outer diameter on the steel substrate with diameter, to coal (rock) sample
It is positioned；The heat preservation cylinder material is polystyrene foam plastics, and its role is to completely cut off injection reactive polymer material
Coal (rock) sample and extraneous temperature after material；The steel lamina tecti is annular shape, and internal diameter is slightly less than the internal diameter of coal (rock) sample, outside
Diameter is slightly larger than coal (rock) sample outer diameter；
S22: the spring is placed in the centre bore of coal (rock) sample, and outer diameter is equal with the internal diameter of steel lamina tecti, high
Degree is flushed with the upper surface of steel lamina tecti, during its role is to pressurizing devices to the pressurization of coal (rock) sample, will generate one
Determine the compressive deformation of degree, compressive deformation will also occur therewith for spring, which makes between the ring of spring and ring
Gap reduces, and falls off to prevent the coal (rock) of coal (rock) sample inner surface from considering to be worth doing.
Step S4 specifically includes the following steps:
S41: after axial stress numerical value when recording load-deformation curve to reach to peak value, steel lamina tecti is removed；It will protect
The temperature measurement port being arranged on warm cylinder is connect with temperature sensor；The temperature measurement port is using coal (rock) sample center as base
Standard, every 60 ° are arranged one, and six are one group；Along coal (rock) sample axial direction on the basis of apart from end face 50mm plane, every 50mm
Arrange one group；The temperature sensor is ultrasonic temperature sensor, but is not limited only to this kind of temperature sensor；
S42: a certain amount of reactive polymer material slurry is injected into the centre bore of coal (rock) sample, using hardboard
The upper surface for covering coal (rock) sample is allowed to that the high molecular material slurries in injection centre bore is stopped to overflow because of expansion.
Step S5 specifically includes the following steps:
S51: after self seeding high molecular material slurries, opening temperature sensor immediately, and each temperature is recorded at interval of 10s
Spend sensor registration with it is corresponding at the time of；
S52: until when the registration of temperature sensor is changed less than 0.5 DEG C in continuous 120min, temperature sensing is stopped recording
The registration of device；In observation coal (rock) sample the temperature of each test point whether be more than 140 DEG C specified in AQ1089-2011, if
It has been more than the temperature, then the reactive polymer material is unsatisfactory for the requirement of engineer application.
Step S6 specifically includes the following steps:
S61: after to temperature test, the center of coal (rock) sample in axial direction, using coring device to coal
(rock) sample carries out coring, removes the high molecular material after reaction solidifies in coal (rock) sample centre bore, it is made to be centrally formed diameter
The drilling of 40mm；On the lower end surface of coal (rock) sample, uniformly applies and spread epoxy resin, and seal gasket and epoxy resin layer are glued
It closes；The epoxy resin is used to be sealed the lower end surface of coal (rock) sample, prevents in coal (rock) sample air transmission coefficient continuous mode,
Test gas flows out through lower end surface and influences test measurement result；The seal gasket is rubber material, is that step is discoid,
The minor diameter of seal gasket is equal with the diameter of circular groove in infiltration cylinder bottom plate, and the major diameter of seal gasket is greater than small straight
Diameter；The infiltration cylinder bottom plate center is equipped with the cylinder that height is greater than the sum of seal gasket thickness and coal (rock) sample height, and circle
Column is equipped with intensive aperture, to guarantee that gas enters in coal (rock) sample body from the aperture of cylinder；
S62: the infiltration cylinder bottom plate and ring packing bucket both ends are equipped with corresponding flange, and spiral shell is offered on flange
Keyhole is fastened by bolts infiltration cylinder bottom plate and ring packing bucket, and the outer rim for squeezing seal gasket is realized to coal (rock) sample bottom
The sealing of end face；The ring packing bucket internal layer is equipped with sieve pore, and ring packing bucket internal diameter is greater than the outer diameter of coal (rock) sample, makes
It obtains test gas and flows out its annular surface via coal (rock) sample centre bore, by sieve pore, and by being set to ring packing bucket outer wall
On gas outlet outflow.
Step S7 specifically includes the following steps:
S71: on the upper surface of coal (rock) sample, uniformly applying and spread epoxy resin, and by seal gasket and epoxy resin layer
Bonding；The epoxy resin prevents coal (rock) sample air transmission coefficient continuous mode for being sealed to the upper surface of coal (rock) sample
In, test gas flows out through upper surface and influences test measurement result；
S72: the infiltration cylinder body top plate is identical as infiltration cylinder bottom plate size, and infiltration cylinder body top plate top offers
Air inlet, for providing channel for the flowing of test gas；Cylinder body top plate will be permeated with bolt to connect with ring packing bucket bolt
It connects and fastens.
Step S8 specifically includes the following steps:
S81: the valve of the inlet end is installed in the air inlet on air inlet pipeline, on air inlet pipeline and infiltration cylinder body top plate
Connection；The valve of inlet end is opened, and connects high-pressure helium gas source；The high-pressure helium gas source and coal (rock) body are without any physics
Chemical reaction, therefore the test for applying the gas to carry out coal (rock) body infiltration coefficient reflects its own choked flow attribute to medium；
S82: the high-pressure helium gas source is connect with air inlet pipeline by pressure reducing valve, its role is to control coal (rock) sample into
The helium atmosphere pressure value at gas end；
S83: pressure reducing valve is adjusted, so that the helium atmosphere pressure value of inlet end is met test requirements document, then opens outlet side
Valve, and record the numerical value of outlet side flowmeter；The outlet side flow is calculated as mass flowmenter, but is not limited only to the type
The flowmeter of type；
S84: to outlet side flowmeter registration in continuous 1h, when relative deviation is less than 1%, indicate that the flowing of helium has reached
Stable state has been arrived, has recorded helium atmosphere flow at this time immediately, and then obtain corresponding infiltration coefficient numerical value；The coal
(rock) sample infiltration coefficient is calculated as the following formula:
In formula: q is unit area helium gas flow, m3/(m2.d)；R1For the internal diameter of coal (rock) sample, m；R0For coal (rock) sample
Outer diameter, m；p0For the helium atmosphere pressure of coal (rock) sample inlet end, MPa；p1For the helium atmosphere pressure of coal (rock) sample outlet side,
MPa；λ is coal (rock) sample infiltration coefficient, m2/(MPa2.d)。
Step S9 specifically includes the following steps:
S91: after coal (rock) sample infiltration coefficient is completed, bolt, the annular for unloading infiltration cylinder body top plate and bottom plate are close
Feng Tong, application blade strike off seal gasket；
S92: coal (rock) sample is placed on steel substrate, and the steel substrate for being placed with coal (rock) sample is installed in pressurization
Below device, pressurizing device is then opened, repeats S3, until coal (rock) sample load-deformation curve stops immediately after reaching peak value
Pressurization, and record axial stress at this time；
S93: when reaching peak value by coal (rock) sample load-deformation curve before and after comparison injection reactive polymer material
Axial stress, judge this kind of high molecular material to the function and effect of reinforcing；If injecting the coal after reactive polymer material
Before axial stress when (rock) sample load-deformation curve reaches peak value is greater than injection, then show this kind of high molecular material to reinforcing
There are apparent effective effect, on the contrary then nothing.
On the other hand, as shown in Figure 1, the present invention mixes after providing a kind of mining reactive polymer material slip casting with coal petrography
The characteristic CONTINUOUS VISCOSITY MEASURING of body, including cylindrical coal (rock) sample 1,1 center of described cylinder coal (rock) sample are in axial direction passed through
It wears and offers drilling, 1 bottom of coal (rock) sample is provided with steel substrate 6, and top is equipped with steel lamina tecti 5, in the drilling
It is provided with spring 3, the hardboard for being also inoculated with high molecular material slurries and being constrained its boundary；It further include for wrapping up coal
The heat preservation cylinder 2 of 1 outer wall of (rock) sample, the heat preservation cylinder 2 be equipped with multiple temperature measurement ports 4, and with temperature measurement end
The temperature sensors of 4 connection of mouth, further include the press machine for applying axial stress to the coal (rock) sample 1, the press machine
It can show axial stress numerical value and load-deformation curve.
By the present apparatus, the temperature and strength characteristics after mining high molecular material slip casting with coal petrography mixture, tool can detect
Body is as follows:
Axial stress is gradually applied to coal (rock) sample by cracking pressure machine, by the stress-strain for observing coal (rock) sample
It after curve to reach to peak value, can stop pressurizeing, and record axial stress numerical value at this time, with detection intensity characteristic.
After injecting high molecular material slurries, opening temperature sensor, and each temperature sensor is recorded at interval of 10s
Registration with it is corresponding at the time of；Until can be stopped recording when the registration of temperature sensor is changed less than 0.5 DEG C in continuous 120min
The registration of temperature sensor.Whether the temperature for observing each test point in coal (rock) sample has been more than specified in AQ1089-2011
140 DEG C, if being more than the temperature, which is unsatisfactory for the requirement of engineer application.
In another aspect, as shown in Fig. 2, the present invention mixes after providing a kind of mining reactive polymer material slip casting with coal petrography
Cylindrical coal (rock) sample 1 in the characteristic CONTINUOUS VISCOSITY MEASURING of body, including ring packing bucket 8 and ring packing bucket 8, it is described
Cylindrical 1 center of coal (rock) sample, which is in axial direction run through, offers drilling, and coal (rock) the sample upper surface and lower end surface are equipped with
Epoxy resin layer 9, and seal gasket 10 is bonded on two sides epoxy resin layer 9, the seal gasket 10 of the lower end surface connects
It is connected to infiltration cylinder bottom plate 7, the upper surface is connected with infiltration cylinder body top plate 11, the ring packing bucket and infiltration cylinder bottom plate
7, infiltration cylinder body top plate 11 is tightly connected；The ring packing bucket includes internal layer and outer layer, and the internal layer is equipped with sieve pore, described
Outer layer is equipped with gas outlet 18, and outlet pipe 12 is connected on the gas outlet, and the outlet pipe 12 is equipped with outlet end valve
Door and outlet side flowmeter 16；The tube bundle across drilling is equipped in the middle part of the infiltration cylinder bottom plate 7, on the tube bundle
Offer intensive aperture；Infiltration 11 center of cylinder body top plate is equipped with connection drilling and external air inlet 17, connects air inlet
Pipeline 13, inlet end valve 14 and pressure reducing valve 15 are provided on the air inlet pipeline 13, and the air inlet pipeline 13 connects high pressure helium
Gas gas source.
By the present apparatus, the Penetration Signature after mining high molecular material slip casting with coal petrography mixture can detect, specific as follows:
High-pressure helium gas source and coal (rock) body apply the gas to carry out the infiltration of coal (rock) body without any physical-chemical reaction
The test of coefficient can the reflection of objective its own choked flow attribute to medium；The high-pressure helium gas source and air inlet pipeline are logical
Pressure reducing valve connection is crossed, its role is to control the helium atmosphere pressure value of coal (rock) sample inlet end；Pressure reducing valve is adjusted, air inlet is made
The helium atmosphere pressure value at end meets test requirements document, then opens the valve of outlet side, and records the number of outlet side flowmeter
Value；The outlet side flow is calculated as mass flowmenter, but is not limited only to the flowmeter of this type；To outlet side flowmeter registration
In continuous 1h, when relative deviation is less than 1%, it is believed that the flowing of helium has had reached stable state, records immediately at this time
Helium atmosphere flow, and then corresponding infiltration coefficient numerical value can be obtained；Coal (rock) the sample infiltration coefficient is counted as the following formula
It calculates:
In formula: q is unit area helium gas flow, m3/(m2.d)；R1For the internal diameter of coal (rock) sample, m；R0For coal (rock) sample
Outer diameter, m；p0For the helium atmosphere pressure of coal (rock) sample inlet end, MPa；p1For the helium atmosphere pressure of coal (rock) sample outlet side,
MPa；λ is coal (rock) sample infiltration coefficient, m2/(MPa2.d)。
After coal mine provided by the invention reactive polymer material slip casting with the temperature of coal petrography mixture, Penetration Signature,
Intensity method for continuously measuring and device starch reactive polymer material after being plastically deformed coal (rock) body by load
Liquid is injected into the centre bore of coal (rock) sample, flowing of the simulation reaction type high molecular material slurries in coal (rock) body secondary interstice
Situation, and coal (rock) body after the comprehensive test injection high molecular material of the temperature measurement port by being set on heat preservation cylinder
Temperature variations can provide reliable technological means for mining reactive polymer material security application feasibility analysis；It is logical
The infiltration coefficient that coal (rock) body after reactive polymer material is injected in measurement is crossed, accurate characterization injects reactive polymer material pair
The application effect of coal (rock) body water-blocking operation；By to coal (rock) body uniaxial compressive strength before and after injection reactive polymer material
Contrast test, can objective reflection injection reactive polymer material before and after to occur plastic deformation coal (rock) body add
Gu effect implements the security performance and application effect of the operations such as roof reinforcement, water blockoff for evaluation injection reactive polymer material
Technical support is provided.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to compared with
Good embodiment describes the invention in detail, those skilled in the art should understand that, it can be to skill of the invention
Art scheme is modified or replaced equivalently, and without departing from the objective and range of the technical program, should all be covered in the present invention
Scope of the claims in.
Claims (10)
1. the characteristic method for continuously measuring after a kind of mining reactive polymer material slip casting with coal petrography mixture, feature exist
In: the following steps are included:
S1: the coal sample of underground coal mine acquisition or rock sample are cut into cylinder type；Then on coal sample or the center edge of rock sample
Axial direction digs drilling, and penetrates coal sample or rock sample；
S2: the torus moulded coal sample or rock sample that prepare are placed on steel substrate, and with heat preservation cylinder by coal sample or rock sample
Circumferential direction package, steel lamina tecti is placed at the top of coal sample or rock sample, spring is placed in the centre drill of coal sample or rock sample
It is then whole to be placed on pressurizing device in hole；
S3: opening pressurizing device and gradually apply axial stress to coal sample or rock sample, passes through observation coal sample or the stress-strain of rock sample
After curve to reach to peak value, stop pressurization, and record axial stress numerical value at this time；
S4: the temperature measurement port kept the temperature on cylinder is connected with temperature sensor, and by prepared reactive polymer
Material slurry is poured into the centre-drilling hole of coal sample or rock sample, using hardboard to the reactive polymer material in centre-drilling hole
Form restrained boundary；
S5: recording the registration of temperature sensor in each temperature measurement port, up to the registration of temperature sensor in continuous 120min
Variation is less than 0.5 DEG C；
S6: after to temperature test, coal sample or rock sample being taken out, and remove the height after reaction solidifies in coal sample or rock sample centre bore
Molecular material and spring, with the lower end surface that epoxy resin is uniformly applied to coal sample or rock sample, then by seal gasket with
Epoxy resin layer bonding, and be placed in infiltration cylinder bottom plate；Infiltration cylinder bottom plate and ring packing bucket are connected with simultaneously
Fastening；
Epoxy resin: being uniformly applied to the upper surface of coal sample or rock sample by S7, then bonds seal gasket and epoxy resin layer,
Infiltration cylinder body top plate is placed on epoxy resin layer, infiltration cylinder body top plate top offers air inlet, for being test
The flowing of gas provides channel；Cylinder body top plate will be permeated with bolt to be connected with and fasten with ring packing bucket；
S8: opening the valve of inlet end, and air inlet be connected to high-pressure helium gas source, and the pressure for adjusting helium keeps it predetermined
Numerical value；The valve for then opening outlet side, makes high-pressure helium under the action of the pressure difference of inlet end and outlet side, via coal sample
Or the annular entity of rock sample flows to outlet side, and reads the numerical value of outlet side flowmeter, after its numerical stability, records immediately
Under helium atmosphere flow at this time, and then corresponding infiltration coefficient numerical value can be obtained；
S9: after coal sample or rock sample infiltration coefficient are completed, bolt, the ring packing of infiltration cylinder body top plate and bottom plate are unloaded
Bucket, application blade strike off seal gasket；Then coal sample or rock sample are placed on steel substrate, and coal sample or rock sample will be placed with
Steel substrate install below the pressurizing device, then open pressurizing device, repeat S3, then test finishes.
2. the characteristic METHOD FOR CONTINUOUS DETERMINATION after mining reactive polymer material slip casting according to claim 1 with coal petrography mixture
Method, it is characterised in that: step S1 specifically includes the following steps:
S11: the coal sample of underground coal mine acquisition or rock sample are cut into diameter 200mm, after the cylinder type of height 400mm, use sand
Paper is polished in coal sample or rock sample end face with annular surface, then on the basis of coal sample or rock sample end face center, uses vernier calliper
Ruler measures the distance on four orthogonal directions of end face center, if the deviation of any two test is less than 0.5mm, coal sample or rock sample
Size meets test requirements document；
S12: the center of coal sample or rock sample in axial direction, using coring device to the diameter 200mm of preparation, height
The cylinder type coal sample or rock sample of 400mm carries out coring, it is made to be centrally formed the drilling of diameter 40mm, the depth and coal sample of coring
Or rock sample height is equal.
3. the characteristic METHOD FOR CONTINUOUS DETERMINATION after mining reactive polymer material slip casting according to claim 1 with coal petrography mixture
Method, it is characterised in that: step S2 specifically includes the following steps:
S21: with diameter slightly larger than coal sample or the circular groove of rock sample outer diameter on the steel substrate, to coal sample or rock sample
It is positioned；The heat preservation cylinder material is polystyrene foam plastics, and its role is to completely cut off injection reactive polymer material
Coal sample or rock sample and extraneous temperature after material；The steel lamina tecti is annular shape, and internal diameter is slightly less than the interior of coal sample or rock sample
Diameter, outer diameter are slightly larger than coal sample or rock sample outer diameter；
S22: the spring is placed in the centre bore of coal sample or rock sample, and outer diameter is equal with the internal diameter of steel lamina tecti, height
It is flushed with the upper surface of steel lamina tecti, during pressurizeing its role is to pressurizing device to coal sample or rock sample, one will be generated
Determine the compressive deformation of degree, compressive deformation will also occur therewith for spring, which makes between the ring of spring and ring
Gap reduces, to prevent the slack coal of coal sample or rock sample inner surface or landwaste from falling off.
4. the characteristic METHOD FOR CONTINUOUS DETERMINATION after mining reactive polymer material slip casting according to claim 1 with coal petrography mixture
Method, it is characterised in that: step S4 specifically includes the following steps:
S41: after axial stress numerical value when recording load-deformation curve to reach to peak value, steel lamina tecti is removed；Heat preservation is justified
The temperature measurement port being arranged on cylinder is connect with temperature sensor；The temperature measurement port is using coal sample or rock sample center as base
Standard, every 60 ° are arranged one, and six are one group；Along coal sample or rock sample axial direction on the basis of apart from end face 50mm plane, often
50mm arranges one group；The temperature sensor is ultrasonic temperature sensor, but is not limited only to this kind of temperature sensor；
S42: a certain amount of reactive polymer material slurry is injected into the centre bore of coal sample or rock sample, using hardboard lid
The firmly upper surface of coal sample or rock sample is allowed to that the high molecular material slurries in injection centre bore is stopped to overflow because of expansion.
5. the characteristic METHOD FOR CONTINUOUS DETERMINATION after mining reactive polymer material slip casting according to claim 1 with coal petrography mixture
Method, it is characterised in that: step S5 specifically includes the following steps:
S51: after self seeding high molecular material slurries, opening temperature sensor immediately, and record each temperature at interval of 10s and pass
The registration of sensor with it is corresponding at the time of；
S52: until when the registration of temperature sensor is changed less than 0.5 DEG C in continuous 120min, temperature sensor is stopped recording
Registration；Whether the temperature for observing each test point in coal sample or rock sample has been more than 140 DEG C, if being more than the temperature, the reaction
Type high molecular material is unsatisfactory for the requirement of engineer application.
6. the characteristic METHOD FOR CONTINUOUS DETERMINATION after mining reactive polymer material slip casting according to claim 1 with coal petrography mixture
Method, it is characterised in that: step S6 specifically includes the following steps:
S61: after to temperature test, the center of coal sample or rock sample in axial direction, using coring device to coal sample
Or rock sample carries out coring, removes the high molecular material after reaction solidifies in coal sample or rock sample centre bore, it is made to be centrally formed diameter
The drilling of 40mm；It on the lower end surface of coal sample or rock sample, uniformly applies and spreads epoxy resin, and by seal gasket and epoxy resin layer
Bonding；The epoxy resin prevents coal sample or rock sample air transmission coefficient from measuring for being sealed to the lower end surface of coal sample or rock sample
In the process, test gas flows out through lower end surface and influences test measurement result；The seal gasket is rubber material, is step
Discoid, the minor diameter of seal gasket is equal with the diameter of circular groove in infiltration cylinder bottom plate, and the major diameter of seal gasket is big
In minor diameter；The infiltration cylinder bottom plate center is equipped with the circle that height is greater than the sum of seal gasket thickness and coal sample or rock sample height
Column, and cylinder is equipped with intensive aperture, to guarantee that gas enters in coal sample or rock sample body from the aperture of cylinder；
S62: the infiltration cylinder bottom plate and ring packing bucket both ends are equipped with corresponding flange, and bolt is offered on flange
Hole is fastened by bolts infiltration cylinder bottom plate and ring packing bucket, and the outer rim for squeezing seal gasket is realized to coal sample or rock sample bottom
The sealing of end face；The ring packing bucket internal layer is equipped with sieve pore, and ring packing bucket internal diameter is greater than the outer diameter of coal sample or rock sample,
So that test gas flows out its annular surface via coal sample or rock sample centre bore, by sieve pore, and by being set to ring packing bucket
Gas outlet outflow on outer wall.
7. the characteristic METHOD FOR CONTINUOUS DETERMINATION after mining reactive polymer material slip casting according to claim 1 with coal petrography mixture
Method, it is characterised in that: step S8 specifically includes the following steps:
S81: the valve of the inlet end is installed on air inlet pipeline, and the air inlet on air inlet pipeline and infiltration cylinder body top plate connects
It connects；The valve of inlet end is opened, and connects high-pressure helium gas source；The high-pressure helium gas source and coal body or rock mass are without any physics
Chemical reaction, therefore the test of gas progress coal body or Rockmass Permeabuity Coefficient is applied to reflect its own choked flow attribute to medium；
S82: the high-pressure helium gas source is connect with air inlet pipeline by pressure reducing valve, and its role is to control coal sample or rock sample air inlet
The helium atmosphere pressure value at end；
S83: adjusting pressure reducing valve, the helium atmosphere pressure value of inlet end made to meet test requirements document, then opens the valve of outlet side
Door, and record the numerical value of outlet side flowmeter；The outlet side flow is calculated as mass flowmenter, but is not limited only to this type
Flowmeter；
S84: to outlet side flowmeter registration in continuous 1h, when relative deviation is less than 1%, indicate that the flowing of helium has reached
Stable state records helium atmosphere flow at this time immediately, and then obtains corresponding infiltration coefficient numerical value；The coal sample or rock
Sample infiltration coefficient is calculated as the following formula:
In formula: q is unit area helium gas flow, m3/(m2.d)；R1For coal sample or the internal diameter of rock sample, m；R0For coal sample or rock sample
Outer diameter, m；p0For coal sample or the helium atmosphere pressure of rock sample inlet end, MPa；p1For coal sample or the helium atmosphere pressure of rock sample outlet side
Power, MPa；λ is coal sample or rock sample infiltration coefficient, m2/(MPa2.d)。
8. the characteristic METHOD FOR CONTINUOUS DETERMINATION after mining reactive polymer material slip casting according to claim 1 with coal petrography mixture
Method, it is characterised in that: step S9 specifically includes the following steps:
S91: after coal sample or rock sample infiltration coefficient are completed, bolt, the ring packing of infiltration cylinder body top plate and bottom plate are unloaded
Bucket, application blade strike off seal gasket；
S92: coal sample or rock sample are placed on steel substrate, and the steel substrate for being placed with coal sample or rock sample is installed in pressurization
Below device, pressurizing device is then opened, repeats S3, until coal sample or rock sample load-deformation curve stop immediately after reaching peak value
It only pressurizes, and records axial stress at this time；
S93: when the coal sample or rock sample load-deformation curve injected before and after reactive polymer material by comparison reach peak value
Axial stress judges this kind of high molecular material to the function and effect of reinforcing；If inject reactive polymer material after coal sample or
Before axial stress when rock sample load-deformation curve reaches peak value is greater than injection, then show this kind of high molecular material to being reinforced with
Apparent effective effect, on the contrary then nothing.
9. the characteristic CONTINUOUS VISCOSITY MEASURING after a kind of mining reactive polymer material slip casting with coal petrography mixture, feature exist
In: including cylindrical coal sample or rock sample, the cylinder coal sample or rock sample center are in axial direction run through and offer drilling, described
Coal sample or rock sample bottom are provided with steel substrate, and top is equipped with steel lamina tecti, is provided with spring in the drilling, is also inoculated with height
Molecular material slurries and the hardboard that its boundary is constrained；It further include the heat preservation circle for wrapping up coal sample or rock sample outer wall
Cylinder, the heat preservation cylinder are equipped with multiple temperature measurement ports, and the temperature sensor connecting with temperature measurement port, also wrap
The press machine for applying axial stress to the coal sample or rock sample is included, the press machine can show axial stress numerical value and answer
Force-strain curve.
10. the characteristic CONTINUOUS VISCOSITY MEASURING after a kind of mining reactive polymer material slip casting with coal petrography mixture, feature exist
In: including the cylindrical coal sample or rock sample in ring packing bucket and ring packing bucket, the cylinder coal sample or rock sample center
In axial direction through offering drilling, the coal sample or rock sample upper surface and lower end surface is equipped with epoxy resin layer, and two
Be bonded with seal gasket on the epoxy resin layer of face, the seal gasket of the lower end surface is connected with infiltration cylinder bottom plate, it is described on
End face is connected with infiltration cylinder body top plate, and the ring packing bucket is connect with infiltration cylinder bottom plate, infiltration cylinder body top plate seal；It is described
Ring packing bucket includes internal layer and outer layer, and the internal layer is equipped with sieve pore, and the outer layer is equipped with gas outlet, on the gas outlet
It is connected with outlet pipe, the outlet pipe is equipped with outlet side valve and outlet side flowmeter；In the infiltration cylinder bottom plate
Portion is equipped with the tube bundle across drilling, offers intensive aperture on the tube bundle；The infiltration cylinder body roof center
Equipped with connection drilling and external air inlet, air inlet pipeline is connected, is provided with inlet end valve and decompression on the air inlet pipeline
Valve, the air inlet pipeline connect high-pressure helium gas source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910726089.2A CN110361265B (en) | 2019-08-07 | 2019-08-07 | Method and device for continuously measuring characteristics of mixture of mine reaction type high polymer material and coal rock after grouting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910726089.2A CN110361265B (en) | 2019-08-07 | 2019-08-07 | Method and device for continuously measuring characteristics of mixture of mine reaction type high polymer material and coal rock after grouting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110361265A true CN110361265A (en) | 2019-10-22 |
| CN110361265B CN110361265B (en) | 2021-10-08 |
Family
ID=68223455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910726089.2A Active CN110361265B (en) | 2019-08-07 | 2019-08-07 | Method and device for continuously measuring characteristics of mixture of mine reaction type high polymer material and coal rock after grouting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110361265B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111307687A (en) * | 2020-03-05 | 2020-06-19 | 中煤科工集团重庆研究院有限公司 | Method for evaluating permeability and strength of bonding of high polymer material and coal rock mass |
| CN113358480A (en) * | 2021-05-13 | 2021-09-07 | 太原理工大学 | Coal rock mechanical test device and test method |
| CN117538217A (en) * | 2023-11-27 | 2024-02-09 | 中国科学院西北生态环境资源研究院 | Device and method for analyzing permeation and migration characteristics of helium-rich natural gas in rock |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101799386A (en) * | 2009-12-25 | 2010-08-11 | 福州大学 | Testing device and testing method for engineering mechanical properties of falling rock backfill |
| CN105716967A (en) * | 2016-02-03 | 2016-06-29 | 山东科技大学 | Grout-rock interface feature test method using induction splitting grouting device |
| CN107101928A (en) * | 2017-05-27 | 2017-08-29 | 中煤科工集团重庆研究院有限公司 | A kind of non-linear device for testing permeability coefficient of coal petrography and method |
| CN206862784U (en) * | 2017-06-19 | 2018-01-09 | 中国科学院武汉岩土力学研究所 | A kind of indoor Triaxial tester for testing sand slip casting setting strength |
| CN107632116A (en) * | 2017-09-01 | 2018-01-26 | 山东大学 | A kind of three-dimensional grouting model test servo-control system and test method |
| CN108590628A (en) * | 2018-06-28 | 2018-09-28 | 中国矿业大学(北京) | A kind of device and method of monitoring coal body drilling transformation-temperature-gas flow |
| CN109030317A (en) * | 2018-09-05 | 2018-12-18 | 中山大学 | A kind of impervious material osmotic grouting laboratory testing rig |
| US20190120741A1 (en) * | 2016-06-23 | 2019-04-25 | Bceg Environmental Remediation Co.,Ltd | Method for determining diffusion radius of in-situ injection and remediation of contaminated soil and groundwater |
-
2019
- 2019-08-07 CN CN201910726089.2A patent/CN110361265B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101799386A (en) * | 2009-12-25 | 2010-08-11 | 福州大学 | Testing device and testing method for engineering mechanical properties of falling rock backfill |
| CN105716967A (en) * | 2016-02-03 | 2016-06-29 | 山东科技大学 | Grout-rock interface feature test method using induction splitting grouting device |
| US20190120741A1 (en) * | 2016-06-23 | 2019-04-25 | Bceg Environmental Remediation Co.,Ltd | Method for determining diffusion radius of in-situ injection and remediation of contaminated soil and groundwater |
| CN107101928A (en) * | 2017-05-27 | 2017-08-29 | 中煤科工集团重庆研究院有限公司 | A kind of non-linear device for testing permeability coefficient of coal petrography and method |
| CN206862784U (en) * | 2017-06-19 | 2018-01-09 | 中国科学院武汉岩土力学研究所 | A kind of indoor Triaxial tester for testing sand slip casting setting strength |
| CN107632116A (en) * | 2017-09-01 | 2018-01-26 | 山东大学 | A kind of three-dimensional grouting model test servo-control system and test method |
| CN108590628A (en) * | 2018-06-28 | 2018-09-28 | 中国矿业大学(北京) | A kind of device and method of monitoring coal body drilling transformation-temperature-gas flow |
| CN109030317A (en) * | 2018-09-05 | 2018-12-18 | 中山大学 | A kind of impervious material osmotic grouting laboratory testing rig |
Non-Patent Citations (3)
| Title |
|---|
| 李利平 等: "一种新型高分子注浆材料的试验研究", 《岩石力学与工程学报》 * |
| 蔡明: "煤矿用高分子加固材料安全性评价方法研究", 《中国优秀硕士学位论文全文数据库工程科技Ⅰ辑》 * |
| 郭东明 等: "水玻璃-纳米二氧化硅复合聚氨酯注浆材料性能试验", 《现代矿业》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111307687A (en) * | 2020-03-05 | 2020-06-19 | 中煤科工集团重庆研究院有限公司 | Method for evaluating permeability and strength of bonding of high polymer material and coal rock mass |
| CN111307687B (en) * | 2020-03-05 | 2022-07-19 | 中煤科工集团重庆研究院有限公司 | Method for evaluating permeability and strength of bonding of high polymer material and coal rock mass |
| CN113358480A (en) * | 2021-05-13 | 2021-09-07 | 太原理工大学 | Coal rock mechanical test device and test method |
| CN117538217A (en) * | 2023-11-27 | 2024-02-09 | 中国科学院西北生态环境资源研究院 | Device and method for analyzing permeation and migration characteristics of helium-rich natural gas in rock |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110361265B (en) | 2021-10-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110361265A (en) | After mining reactive polymer material slip casting with the characteristic method for continuously measuring and device of coal petrography mixture | |
| Stormont et al. | Gas flow through cement-casing microannuli under varying stress conditions | |
| EP2823144B1 (en) | Portable device and method for field testing proppant | |
| Jasinge et al. | Effects of effective stress changes on permeability of latrobe valley brown coal | |
| CN104153760B (en) | Oil/gas Well cement sheath sealing characteristics simulating test device and experimental technique | |
| Hangx et al. | The effect of CO2 on the mechanical properties of the Captain Sandstone: Geological storage of CO2 at the Goldeneye field (UK) | |
| Ebrahimi et al. | Deformational behavior of fouled railway ballast | |
| Chang | Hydraulic fracturing in particulate materials | |
| CN110411859B (en) | Method for testing interface strength after grouting reinforcement of crushed coal body | |
| CN106932325B (en) | Device and test method for mud-water fluid seepage of rock fracture under action of dynamic and static loads | |
| CN106442264A (en) | Device for testing permeability under high temperature and high pressure | |
| CN105301202A (en) | Test system and test method for determining upper protective layer mining pressure releasing scope | |
| Kozhagulova et al. | An integrated laboratory experiment of realistic diagenesis, perforation and sand production using a large artificial sandstone specimen | |
| Wolterbeek et al. | Restoration of annular zonal isolation using localized casing expansion (LCE) technology: A proof of concept based on laboratory studies and field trial results | |
| EP1373681B1 (en) | A method for pressure- and flow-preventive fixing of pipes in a well | |
| Zhang et al. | Numerical simulations of fracture propagation in jointed shale reservoirs under CO 2 fracturing | |
| CN204301779U (en) | A kind of indoor deep hole grouting multi-parameter combined measuring instrument | |
| Sharifi et al. | Application of a Laboratory-Scale Apparatus to Simulate Gas Migration during Cement Slurry Hydration | |
| Huang et al. | Experimental investigation on the impact of initial pore pressure on breakdown pressure of borehole radial fracture for unsaturated mortar hydraulic fracturing under true triaxial stress | |
| CN205388470U (en) | Not hard up circle in tunnel destroys testing arrangement of degree of depth | |
| Li et al. | Effectiveness of thin spray-on liners as a gas management tool in underground coal mines | |
| Fuenkajorn et al. | Drilling-induced fractures in borehole walls | |
| CN110646584B (en) | Similar simulation method and device for coal seam water injection hole sealing test | |
| Blue | Experimental evaluations of selected sealants to remediate CO 2 leakage | |
| Chen et al. | Dilative behavior of granular materials |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20210918 Address after: 400000 No. 6 Shilin Avenue, Dadukou District, Chongqing Applicant after: Chongqing Anbiao Testing Research Institute Co., Ltd Applicant after: CHONGQING RESEARCH INSTITUTE CO., LTD. OF CHINA COAL TECHNOLOGY & ENGINEERING Group Address before: No.6, Erlang science and Technology City Road, Jiulongpo District, Chongqing, 400039 Applicant before: CHONGQING RESEARCH INSTITUTE CO., LTD. OF CHINA COAL TECHNOLOGY & ENGINEERING Group |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |