CN104880738B - Analog detection coal road protrudes the method and apparatus of parameter and prominent relation and rule - Google Patents
Analog detection coal road protrudes the method and apparatus of parameter and prominent relation and rule Download PDFInfo
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- 230000006835 compression Effects 0.000 claims abstract description 30
- 238000007906 compression Methods 0.000 claims abstract description 30
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- 238000012360 testing method Methods 0.000 claims abstract description 13
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- 238000005336 cracking Methods 0.000 claims description 3
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
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- 230000006378 damage Effects 0.000 description 2
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Abstract
A kind of analog detection coal road protrudes the method and apparatus of parameter and prominent relation and rule, belongs to the outburst prediction test method and device of coal road.The device is by Long Circle cylinder body；Supporting plate；Compression leg；Pressure-bearing rod；Sealing plate；Coal seam with gas；T-shaped tubulose plug；Plug closure；Hollow pressing plate；Hinge turnover panel；Forcing screw；Pressure gauge connection；Short fix bar；Long fix bar；Inflation inlet is formed.When determining coal road protrusion parameter, coal sample is added in cylinder body, it is compressing, gas is vacuumized and be filled with, forms a kind of coal seam with gas, the coal seam with gas for driving spiral bit to enter through T-shaped tubulose plug in cylinder body with electric coal drill can determine.When simulation is prominent, T-shaped tubulose plug, plug closure, hollow pressing plate are replaced as plug and pressing plate, coal seam with gas is made by same requirement, pressing plate is opened with jack, so that it may it was observed that coal body protrudes situation.The present apparatus is simple in construction, and test is accurate, can detect coal road and protrude the whether accurate and prominent critical value of parameter.
Description
Technical field
The present invention relates to a kind of analog detection coal road to protrude parameter and the relation protruded and the method and apparatus of rule, especially
It is that a kind of various coal roads of test in laboratory that are applied to protrude whether parameters can predict method that is prominent and determining inrush critical value
With device.
Background technology
It is well known that the coal road outburst prediction method that underground generally uses at present is " point prediction " method entirely,《Prevent and treat coal with
Gas Outburst provides》74th article of regulation:The outburst hazard of following method prediction Driving Face in Coal Tunnel can be used；
1. method of drilling index；
2. composite index method；
3.R value index methods；
4. other are experimentally verified that effective method (drilling cuttings temperature, coal temperature, blowing out after gas outburst amount etc.).
《Prevent and treat coal and gas prominent regulation》75th article, 76 and 77 have respectively provided first 3 kinds conventional coal roads and have protruded
The applying step of Forecasting Methodology.The characteristics of these methods is exactly the index by certain point in front of measure coal road working face of drilling with pushing away
The critical value contrast recommended, if being just predicted as area of coal mining face with potential outburst danger more than critical value, is otherwise just predicted as the work of no outburst danger
Make face.(bibliography：National security production supervision management board, national Coal Mine Safety Supervision Bureau work out,《Preventing and treating coal is dashed forward with gas
Go out regulation》, Coal Industry Press, in July, 2009, P50~P54.).These methods come from people and produced at the scene for a long time
During summary of experience, there is certain reference value.
The above method is disadvantageous in that:Various regions colliery often occurs using the prediction of these methods not in production practices
Even there is the example that low index protrudes, cause serious casualty accident in accurate situation, some, and the worker also to be gone into the well to scene makes
It is panic into serious psychology.The reason for causing this situation is no doubt that these coal road outburst prediction indexs fail to reflect that coal road protrudes
Principal element, cause prediction to start a leak.It is but no after still these methods proposition of most critical to pass through test in laboratory just
Scene is allowed to consult and use in the form of standard.If any coal road outburst prediction index first passes through test in laboratory after proposing,
Accurate prediction index and critical value are supplied to scene, and those insensitive and inaccurate indexs are rejected, are just avoided that existing
There is casualty accident in field, while also greatly improves the drivage efficiency of coal road.
But establishing that a complete coal road protrudes parametric measurement and prominent analogue means is too difficult, conventional people can be with
Stone door punching coal outburst prediction Indexs measure and prominent analogue means are established, is because of crustal stress and gas in the coal seam in front of crossdrift
Pressure can regard impartial as.And in the coal seam in front of coal road crustal stress and gas pressure distribution be it is unequal, it is close
There is a release drainage at exposure, more go deep into coal seam, crustal stress and gas pressure are bigger, and deep is concentrated there is one should
Power band.And protrusion is exactly often to occur after concentrated stress is opened suddenly with coal body, and the length of release drainage is often to change
's.Therefore, the protrusion parametric measurement and prominent analogue means that establish coal road must will have breakthrough in method.
The content of the invention
Technical problem：The purpose of the present invention is for problem present in prior art, there is provided a kind of simple in construction, operation
Conveniently, accurate, the safe and reliable analog detection coal road of test result protrudes parameter and prominent relation and the method and dress of rule
Put.
Technical scheme：The analog detection coal road of the present invention protrudes parameter and prominent relation and the method for rule, including such as
Lower step：
A. below 2mm is sieved to after colliery scene samples of coal pulled, crushing, adds water or diesel oil, is thoroughly mixed uniformly,
Agglomerating to hold coal dust, voluntarily cracking is defined for hand pine coal group, is then charged into standby in sealing bucket；
B. by built-in mixed mud and be connected with plug closure T-shaped tubulose plug load Long Circle cylinder body on the right side of through hole
In, the hollow pressing plate being pressed on T-shaped tubulose plug is inserted in symmetrically arranged long fix bar and be hinged turnover panel, passes through the spiral shell that pressurizes
Hollow pressing plate is tightly secured on T-shaped tubulose plug by nail；
C. the coal sample in sealing bucket is quantitatively weighed by several times, and the coal sample once quantitatively weighed is put into the cylinder body of Long Circle,
Strike off, then compression leg is put into Long Circle cylinder body, whole device is pushed into forcing press, it is ensured that the center of effort of whole device
It is consistent with the center of forcing press；
D. pressurizeed by forcing press to the compression leg on Long Circle cylinder body, the coal sample pressure that will once be added in Long Circle cylinder body
It is real, voltage stabilizing half an hour, it is ensured that air escapes completely in coal, continues to add the coal sample and pressure of an equivalent into Long Circle cylinder body
It is real, it is so repeated multiple times, until the coal sample being gradually compacted in Long Circle cylinder body to be reached to the thickness of setting；
E. pressure gauge is connected with pressure gauge connection, sets the pressure of forcing press, keep that compression leg is continued to press, by preceding
Inflation inlet vacuumizes to the coal sample being compacted in Long Circle cylinder body 1 afterwards, backward coal sample in be filled with methane gas to device in Gas
Body pressure stability, continue 48 hours, at this moment, be applied to the press pressure in shaping coal sample equivalent to crustal stress, and in coal seam
Methane gas pressure equivalent to the gas pressure in coal seam, the coal sample of the compacting in Long Circle cylinder body works equivalent to a lump coal lane
Square coal seam with gas in front；
F. two pressure-bearing rods are inserted in two circular holes of compression leg, and in pressure-bearing rod revealed section and Long Circle cylinder upper end face
Between be put into cushion block, keep both contacts but unstressed state；
G. plug closure is turned on, parametric measurement instrument is protruded in the threaded connection installation of T-shaped tubulose plug entrance, with fiber crops
Flower drilling rod passes through prominent parametric measurement instrument to be inserted into T-shaped tubulose plug, connects electric coal drill and drives spiral bit from T-shaped pipe
Shape plug is drilled until enter through mixed mud in coal sample gassy, while drilling, is adopted by prominent parametric measurement instrument
The Coal Outburst parameter of measure during collection is drilled, until drilling stops drilling, obtain this and contain gas to the Long Circle cylinder body end
The protrusion supplemental characteristic of coal body；
H. after moving back brill, stop forcing press work, release Long Circle cylinder body, compression leg is risen by pressure-bearing rod and hung out, remove
Coal sample in Long Circle cylinder body, T-shaped tubulose plug and hollow pressing plate are removed, change T-shaped column plug and pressing plate into, and pass through pressurization
Pressing plate is tightly secured on T-shaped column plug by screw；
I. repeat step c, d, e, f, the same coal sample sealed in bucket is added into compaction moulding in Long Circle cylinder body, and taken out
Vacuum and inflation, form one and identical coal seam with gas before；
J. a jack is placed on the boss of pressing plate, using the upward crown hinge chain turnover panel of jack, hinge turnover panel edge is be hinged
Head is upturned, and out of hand downwardly turn in the top of pressing plate falls, and T-shaped column plug loses external force, and Long Circle cylinder body includes
Methane gas in gas coal body will push the T-shaped column plug for losing external force, through hole of the coal sample on the right side of Long Circle cylinder body open
Middle ejection, the amount and power size sprayed according to coal sample, so that it is determined that being：Not prominent, weak protrusion, protrusion or strong prominent, are obtained
The sample data whether one coal road protrudes；
K. test of many times is carried out according to different briquetting pressures, different crustal stress and gas pressure, you can obtain multiple
Sample data, multiple sample datas are handled using techniques of discriminant analysis, be so as to show that the protrusion parameter protrudes with coal road
No related and prominent critical value.
The coal sample that the gradation is quantitatively weighed in sealing bucket is 10-16kg.
The time that compacting coal sample in from the cylinder body to Long Circle vacuumizes is 12 hours.
A kind of analog detection coal road for realizing the above method protrudes the device of parameter and prominent relation and rule, including puts
The Long Circle cylinder body of coal seam with gas is put, Long Circle cylinder body is provided with the sealing plate being placed on coal seam with gas, set on sealing plate
There is compression leg, compression leg is fixed together with sealing plate, and the circular hole for setting pressure-bearing rod, described Long Circle cylinder body are symmetrically provided with compression leg
Inflation inlet is respectively equipped with front and back sides, left surface is provided with pressure gauge connector, and right flank is provided with to coal seam with gas and bored
Enter or observe the through hole of Gas Outburst in coal seam with gas, through hole is provided with measure coal road and protrudes parameter or for prominent simulation
Hole sealing device.
The hole sealing device that the measure coal road protrudes parameter includes the T-shaped tubulose plug of built-in mixed mud, is located at T-shaped tubulose
Plug closure on plug, the upper and lower sides of the T-shaped tubulose plug are provided with fix bar, a band are hinged with the short fix bar in top
The be hinged turnover panel of hole square plate, the front end of lower minister's fix bar is the with holes square plate corresponding with upper articulation turnover panel, up and down
The hollow pressing plate acted against on T-shaped tubulose plug is fitted with two square plates with holes, upper and lower two square plates with holes
Side is equipped with the forcing screw of fixed hollow pressing plate.
The hole sealing device for being used for prominent simulation includes T-shaped column plug, and T-shaped column plug insertion Long Circle cylinder body is right
After the through hole of side, the pressing plate acted against on T-shaped column plug is equally fitted with upper and lower two square plates with holes, upper and lower two
The side of individual square plate with holes is equipped with the forcing screw of fixation clip.
The Long Circle inferior part of the cylinder block is provided with supporting plate, and supporting plate is provided with the convenient screw carried.
Described sealing plate is double-layer seal plate, and double-layer seal plate is provided with O-ring seal.
Beneficial effect, as a result of such scheme, the present invention can be carried out in laboratory to the protrusion parameter of coal road
Determine and simulate protrusion, although this device does not have the protrusion parameter of release drainage in coal body in front of simulated determination coal road working face,
But it can be with the protrusion parameter of simulated determination coal road working face front most that section of coal body of outburst danger.Both can ensure to be used for
The coal seam with gas of the prominent parameter of measure is identical with the coal seam with gas of prominent simulation, and turn avoid field observation protrusion phenomenon can
The danger that can be run into.Present invention employs Long Circle cylinder body, and the twist drill rods generally used using colliery scene are drilled, and are gathered
Gas flow data in coal sample or measure drilling, it can meet that existing most of coal road protrudes parametric measurement requirement, you can
Detected with protruding parameter to most of coal road.Show that effect is fine through substantial amounts of measure and prominent simulated experiment.Work as use
Twist drill rods to the coal seam with gas in Long Circle cylinder body drill when, if gushing out higher gas flow during drilling,
Same coal sample is in prominent simulate, in fact it could happen that weak protrusion, in addition it is strong prominent.And the gas flow gushed out during drilling is very
Small, then same coal sample almost occurs without dynamic phenomenon in prominent simulate.By this detection, those can be dashed forward to coal road
The index and inrush critical value for going out sensitivity are directly used in colliery scene.Major advantage compared with prior art is as follows：
Using the compressing coal seam with gas of Long Circle cylinder body, then with twist drill rods to compressing coal body gassy
Drilled, samples of coal pulled or gas flow data, simulate the fact of Site Detection, the protrusion parameter of coal road is examined with this, is solved
Determine the protrusion parametric test difficulty that colliery scene is difficult to the problem of.Parameter can be protruded to various coal roads in the lab
Directly determine and simulate protruding, whether these coal roads protrusion parameter for confirmation is related to coal road protrusion, that is, to coal
Lane protrudes inrush critical values that are sensitive, while providing those parameters for protruding coal road sensitivity, for the protrusion of scene prediction coal road
Foundation is provided, both ensure that the accuracy of checking work, turn avoid the prominent harm brought.Its is simple in construction, easy to operate,
Test result is accurate, securely and reliably, in the art with wide applicability.
Brief description of the drawings
The coal road that Fig. 1 is the present invention protrudes parametric measurement structure of the main view.
The coal road that Fig. 2 is the present invention protrudes parametric measurement structure schematic top plan view.
The coal road that Fig. 3 is the present invention protrudes model configuration schematic diagram.
In figure：1- Long Circle cylinder bodies；2- supporting plates；3- compression legs；4- pressure-bearing rods；5- sealing plates；6- coal seam with gas；
7-T shape tubulose plugs；8- plug closures；The hollow pressing plates of 9-；10- hinge turnover panels；11- forcing screws；12- pressure gauges
Interface, the short fix bars of 13-；The long fix bars of 14-；15- inflation inlets；16-T shape column plugs；17- pressing plates.
Embodiment
One embodiment of the present of invention is further described below in conjunction with the accompanying drawings：
The analog detection coal road of the present invention protrudes parameter and prominent relation and the method for rule, by forcing press special
Long Circle cylinder body on suppress coal sample, be filled with gas, form one section of coal body gassy, replace collecting in front of coal road working face with this
The coal body of that section most outburst danger in middle stress zone.Drilled to compressing coal seam with gas, measure coal road protrudes parameter；
Then the prominent plug of simulation is changed, same coal body is compressing by same requirement, simulate the protrusion after throwing open
Phenomenon.Repeatedly after test, it is possible to whether related to live coal road protrusion detect this coal road protrusion parameter, if can be used for
Prediction coal road is prominent and obtains the critical value of its protrusion, and the foundation of prediction is provided for colliery scene, is comprised the following steps that：
A. below 2mm is sieved to after colliery scene samples of coal pulled, crushing, adds water or diesel oil, is thoroughly mixed uniformly,
Agglomerating to hold coal dust, voluntarily cracking is defined for hand pine coal group, is then charged into standby in sealing bucket；
B. by built-in mixed mud and it is connected with the T-shaped tubulose plug 7 of plug closure and loads the logical of the right side of Long Circle cylinder body 1
Kong Zhong, in symmetrically arranged long fix bar and be hinged turnover panel, inserting is pressed in the hollow pressing plate 9 on T-shaped tubulose plug 7, passes through
Hollow pressing plate 9 is tightly secured on T-shaped tubulose plug 7 by forcing screw 11；
C. the coal sample in sealing bucket is quantitatively weighed by several times, and the coal sample that the gradation is quantitatively weighed in sealing bucket is 10-16kg；
The coal sample once quantitatively weighed is put into the cylinder body 1 of Long Circle, struck off, then compression leg 3 is put into Long Circle cylinder body 1, will be whole
Individual device is pushed into forcing press, it is ensured that the center of effort of whole device is consistent with the center of forcing press；
D. pressurizeed by forcing press to the compression leg 3 on Long Circle cylinder body 1, the coal sample that will once be added in Long Circle cylinder body 1
Compacting, voltage stabilizing half an hour, it is ensured that air escapes completely in coal.Continue to add the coal sample of an equivalent simultaneously into Long Circle cylinder body 1
Compacting, it is so repeated multiple times, until the coal sample being gradually compacted in Long Circle cylinder body 1 to be reached to the thickness of setting；
E. pressure gauge is connected with pressure gauge connection 12, sets the pressure of forcing press, keep that compression leg 3 is continued to press, led to
Front and rear inflation inlet 15 is crossed to vacuumize the coal sample being compacted in Long Circle cylinder body 1 12 hours, backward coal sample in be filled with methane gas
To methane gas pressure stability, continue 48 hours, at this moment, be applied to the press pressure in shaping coal sample equivalent to crustal stress,
And the methane gas pressure in coal seam, equivalent to the gas pressure in coal seam, the coal sample of the compacting in Long Circle cylinder body 1 is equivalent to one
Coal seam with gas 6 in front of the working face of lump coal lane；
F. two pressure-bearing rods 4 are inserted in two circular holes of compression leg 3, and on the revealed section of pressure-bearing rod 4 and Long Circle cylinder body 1
Cushion block is put between end face, keeps both contacts but unstressed state；
G. plug closure 8 is turned on, in the prominent parametric measurement instrument of threaded connection installation of the entrance of T-shaped tubulose plug 7, is used
Twist drill rods pass through prominent parametric measurement instrument to be inserted into T-shaped tubulose plug 7, connect electric coal drill and drive spiral bit from T
Shape tubulose plug 7 is drilled until enter through mixed mud in coal sample gassy, while drilling, passes through prominent parameter determinator
The Coal Outburst parameter of measure during device collection is drilled, until drilling stops drilling, obtain this to the end of Long Circle cylinder body 1
The protrusion supplemental characteristic of coal seam with gas；
H. after moving back brill, stop forcing press work, release Long Circle cylinder body 1, compression leg 3 is risen by pressure-bearing rod 4 and hung out, clearly
Except the coal sample in Long Circle cylinder body 1, T-shaped tubulose plug 7 and hollow pressing plate 9 are removed, changes T-shaped column plug 16 and pressing plate 17 into,
And pressing plate 17 is tightly secured on T-shaped column plug 16 by forcing screw 11；
I. repeat step c, d, e, f, the same coal sample sealed in bucket is added into compaction moulding in Long Circle cylinder body 1, and
Vacuumize and inflate, form one and identical coal seam with gas before；
J. a jack is placed on the boss of pressing plate 17, utilizes the upward crown hinge chain turnover panel 10 of jack, hinge turnover panel 10
It is upturned along articulated joint, out of hand downwardly turn in the top of pressing plate 17 falls, and T-shaped column plug 16 loses external force, oval
Methane gas in shape cylinder body 1 in coal seam with gas 6 will push the T-shaped column plug 16 for losing external force open, and coal sample is from Long Circle
Sprayed in the through hole on the right side of cylinder body 1, the amount and power size sprayed according to coal sample, so that it is determined that being：Not prominent, weak protrusion, dash forward
Go out or strong prominent, obtain the sample data whether a coal road protrudes；
K. test of many times is carried out according to different briquetting pressures, different crustal stress and gas pressure, you can obtain multiple
Sample data, multiple sample datas are handled using techniques of discriminant analysis, be so as to show that the protrusion parameter protrudes with coal road
No related and prominent critical value.
The analog detection coal road of the present invention protrudes the device of parameter and prominent relation and rule, including places coal containing methane gas
The Long Circle cylinder body 1 of body 6, the bottom of Long Circle cylinder body 1 are provided with supporting plate 2, and supporting plate 2 is provided with the convenient screw carried.It is oval
Shape cylinder body 1 is provided with the sealing plate 5 that is placed on coal seam with gas 6, and described sealing plate 5 is double-layer seal plate, double-layer seal plate
It is provided with O-ring seal.Sealing plate 5 is provided with compression leg 3, and compression leg 3 is fixed together with sealing plate 5, is symmetrically provided with compression leg 3
The circular hole of pressure-bearing rod 4 is set, is respectively equipped with inflation inlet 15 on the described front and back sides of Long Circle cylinder body 1, as shown in Figure 2.Left side
Face is provided with pressure gauge connection 12, and right flank is provided with to coal seam with gas 6 and creeps into or observe Gas Outburst in coal seam with gas 6
Through hole, through hole is provided with measure coal road and protrudes parameter or the hole sealing device for prominent simulation.
The hole sealing device that the measure coal road protrudes parameter includes T-shaped tubulose plug 7, is located at blocking up on T-shaped tubulose plug 7
Head closure 8, the upper and lower sides of the T-shaped tubulose plug 7 are provided with fix bar, and it is with holes to be hinged with one in the short fix bar 13 in top
The be hinged turnover panel 10 of square plate, the front end of lower minister's fix bar 14 is the with holes square plate corresponding with upper articulation turnover panel, on
It is fitted with the hollow pressing plate 9 acted against on T-shaped tubulose plug 7 in lower two square plates with holes, upper and lower two with holes square
The side of plate is equipped with the forcing screw 11 of fixed hollow pressing plate 9, as shown in Figure 1.
The hole sealing device for being used to protrude simulation includes T-shaped column plug 16, and T-shaped column plug 16 inserts Long Circle
After through hole on the right side of cylinder body, the pressure acted against on T-shaped column plug 16 is equally fitted with upper and lower two square plates with holes
Plate 17, the side of upper and lower two square plates with holes are equipped with the forcing screw 11 of fixation clip 17, as shown in Figure 3.
Compressing coal seam with gas 6 in Long Circle cylinder body 1, compression leg 3 is linked togather with sealing plate 5, be pressed in containing watt
On this coal body 6, a kind of sealing system that can be pressurizeed is constituted.After plug closure 8 is turned on sleeve, existing various coals
Lane protrudes parametric measurement instrument and can be connected on the screw thread of T-shaped tubulose plug 7.When the pipe that determining instrument is passed through with twist drill rods
Road, after punching the mixed mud on T-shaped tubulose plug 7, drill bit enters in coal seam with gas, at this moment can samples of coal pulled or brill
Hole gas flow, to be measured according to the requirement of the measure of different prominent parameters.
Described analog detection coal road protrudes parameter and the device of prominent relation and rule and can also simulated in front of coal road
Coal body prominent situation occurs when exposing suddenly.When needing to simulate prominent, by T-shaped tubulose plug 7, plug closure 8,
Hollow pressing plate 9 replaces T-shaped column plug 16 and pressing plate 17.By same coal sample after the same method with step in length
Circular cylinder body 1 is compressing, and the gas of same pressure is filled with after vacuumizing, and stands 48 hours, is then keeping press pressure
Under conditions of with jack throw open pressing plate, the effect of T-shaped column plug 16 coal and gas pressure in Long Circle cylinder body 1
Under, outwards fly out.According to whether distance and weight that dish out coal sample and coal sample fly out, can be qualitative by the dynamic phenomenon of the coal sample
To be non-protruding, weak protrusion and strong protrusion.After test of many times, with techniques of discriminant analysis processing data, it is possible to find out this coal
Whether lane, which protrudes parameter and protruded with coal road, has correlationThe outburst prediction of coal road and the critical value of protrusion can be used for, be coal
Ore deposit scene carries out outburst prediction and provides reliable foundation.
Described analog detection coal road protrudes parameter and in the device of prominent relation and rule, compression leg 3 is mounted with two
Pressure-bearing rod 4, pressure-bearing rod 4 is thicker, through compression leg 3, directly rests on the top of Long Circle cylinder body 1.When forcing press pressurization is quiet
Postpone, upper steel plate is padded between pressure-bearing rod 4 and circular cylinder body 1 so that the upper surface of pressure-bearing rod 4 and Long Circle cylinder body 1 is in nothing
Stress contact condition.During drilling or in prominent simulation process, the coal deformation in Long Circle cylinder body 1 loosens, and compression leg 3 exists
To bottom offset in the presence of forcing press, at this moment the pressure of forcing press is just transferred to Long Circle cylinder body 1, Long Circle by pressure-bearing rod 4
The coal body loosened in cylinder body 1 will avoid the destruction of the distortional stress of forcing press, mine pressure when this occurs prominent with live coal seam
Peripherad coal seam transfer is the same.
Claims (4)
1. a kind of analog detection coal road protrudes parameter and prominent relation and the method for rule, by forcing press special oval
Coal sample is suppressed on shape cylinder body, is filled with gas, forms one section of coal body gassy, concentrated stress in front of coal road working face is replaced with this
The coal body of that section most outburst danger in band；Drilled to compressing coal seam with gas, measure coal road protrudes parameter；Then change
The prominent plug of upper simulation, same coal body is compressing by same requirement, simulate the protrusion phenomenon after throwing open；It is more
After secondary test, whether related to live coal road protrusion this coal road protrusion parameter can be just detected, if can be used for predicting coal road
Protrude and obtain the critical value of its protrusion, the foundation of prediction is provided for colliery scene, it is characterised in that comprise the following steps：
A. below 2mm is sieved to after colliery scene samples of coal pulled, crushing, adds water or diesel oil, is thoroughly mixed uniformly, with hand
It is agglomerating to hold coal dust, voluntarily cracking is defined for hand pine coal group, is then charged into standby in sealing bucket；
B. by built-in mixed mud and it is connected with plug closure（8）T-shaped tubulose plug（7）Load Long Circle cylinder body（1）Right side
Through hole in, in symmetrically arranged long fix bar（14）Be hinged turnover panel（10）Middle inserting is pressed in T-shaped tubulose plug（7）On in
Pneumatics plate（9）, pass through forcing screw（11）By hollow pressing plate（9）It is tightly secured in T-shaped tubulose plug（7）On；
C. the coal sample in sealing bucket is quantitatively weighed by several times, and the coal sample that the gradation is quantitatively weighed in sealing bucket is 10-16kg；By one
The secondary coal sample quantitatively weighed is put into the cylinder body of Long Circle（1）In, strike off, then compression leg（3）It is put into Long Circle cylinder body（1）In, will
Whole device is pushed into forcing press, it is ensured that the center of effort of whole device is consistent with the center of forcing press；
D. by forcing press to Long Circle cylinder body（1）On compression leg（3）Pressurization, by Long Circle cylinder body（1）In the coal that once adds
Sample is compacted, voltage stabilizing half an hour, it is ensured that air escapes completely in coal, continues to Long Circle cylinder body（1）The coal of equivalent of interior addition
Sample is simultaneously compacted, so repeated multiple times, until by Long Circle cylinder body（1）The coal sample being inside gradually compacted reaches the thickness of setting；
E. by pressure gauge and pressure gauge connection（12）It is connected, sets the pressure of forcing press, keep to compression leg（3）Continue to press, lead to
Cross front and rear inflation inlet（15）To Long Circle cylinder body（1）The coal sample of middle compacting vacuumize 12 hours, backward coal sample in be filled with
Methane gas continues 48 hours to methane gas pressure stability, at this moment, be applied to press pressure in shaping coal sample equivalent to
Crustal stress, and the methane gas pressure in coal seam is equivalent to the gas pressure in coal seam, Long Circle cylinder body（1）The coal sample phase of middle compacting
When the coal seam with gas in front of a lump coal lane working face（6）；
F. in compression leg（3）Two circular holes in insertion two pressure-bearing rods（4）, and in pressure-bearing rod（4）Revealed section and Long Circle cylinder body
（1）Cushion block is put between upper surface, keeps both contacts but unstressed state；
G. plug closure is turned on（8）, in T-shaped tubulose plug（7）The prominent parametric measurement instrument of threaded connection installation of entrance, is used
Twist drill rods pass through prominent parametric measurement instrument to be inserted into T-shaped tubulose plug（7）It is interior, connect electric coal drill drive spiral bit from
T-shaped tubulose plug（7）Drill until enter through mixed mud in coal sample gassy, while drilling, pass through prominent parameter and survey
The Coal Outburst parameter of measure during instrument collection is drilled is determined, until creeping into Long Circle cylinder body（1）The end, stop drilling, obtain
Obtain the protrusion supplemental characteristic of this coal seam with gas；
H. after moving back brill, stop forcing press work, release Long Circle cylinder body（1）, pass through pressure-bearing rod（4）By compression leg（3）Rise and hang out,
Remove Long Circle cylinder body（1）In coal sample, remove T-shaped tubulose plug（7）With hollow pressing plate（9）, change T-shaped column plug into（16）
And pressing plate（17）, and pass through forcing screw（11）By pressing plate（17）It is tightly secured in T-shaped column plug（16）On；
I. repeat step c, d, e, f, the same coal sample sealed in bucket is added into Long Circle cylinder body（1）Middle compaction moulding, and take out
Vacuum and inflation, form one and identical coal seam with gas before；
J. in pressing plate（17）Boss on place a jack, utilize the upward crown hinge chain turnover panel of jack（10）, hinge turnover panel
（10）It is upturned along articulated joint, pressing plate（17）Out of hand downwardly turn in top fall, T-shaped column plug（16）Lose outer
Power, Long Circle cylinder body（1）Methane gas in interior coal seam with gas (6) will push the T-shaped column plug for losing external force open（16）,
Coal sample is from Long Circle cylinder body（1）Sprayed in the through hole on right side, the amount and power size sprayed according to coal sample, so that it is determined that being：No
Prominent, weak protrusion, protrusion or strong prominent, obtain the sample data whether a coal road protrudes；
K. test of many times is carried out according to different briquetting pressures, different crustal stress and gas pressure, you can obtain multiple samples
Data, multiple sample datas are handled using techniques of discriminant analysis, so as to draw the protrusion parameter and coal road protrude whether phase
The critical value closed and protruded.
2. a kind of analog detection coal road for realizing claim 1 methods described protrudes the dress of parameter and prominent relation and rule
Put, it is characterised in that：It includes placing coal seam with gas（6）Long Circle cylinder body（1）, Long Circle cylinder body（1）It is provided with and is placed in
Coal seam with gas（6）On sealing plate（5）, sealing plate（5）It is provided with compression leg（3）, compression leg（3）With sealing plate（5）It is fixed on one
Rise, compression leg（3）On be symmetrically provided with setting pressure-bearing rod（4）Circular hole, described Long Circle cylinder body（1）It is respectively equipped with front and back sides
Inflation inlet（15）, left surface is provided with pressure gauge connection（12）, right flank is provided with to coal seam with gas（6）Drilling or observation contain
Gas coal body（6）The through hole of middle Gas Outburst, through hole are provided with measure coal road and protrude parameter or the sealing of hole dress for prominent simulation
Put；The Long Circle cylinder body（1）Bottom is provided with supporting plate（2）, supporting plate（2）It is provided with the convenient screw carried；Described sealing plate
（5）For double-layer seal plate, double-layer seal plate is provided with O-ring seal.
3. analog detection coal road according to claim 2 protrudes the device of parameter and prominent relation and rule, its feature
It is：The hole sealing device that the measure coal road protrudes parameter includes the T-shaped tubulose plug of built-in mixed mud（7）, be located at T-shaped tubulose
Plug（7）On plug closure（8）, the T-shaped tubulose plug（7）Upper and lower sides be provided with fix bar, the short fix bar in top
（13）On be hinged with the be hinged turnover panel of a square plate with holes（10）, lower minister's fix bar（14）Front end be and upper articulation turnover panel
（10）Corresponding square plate with holes, it is fitted with upper and lower two square plates with holes and acts against T-shaped tubulose plug（7）On in
Pneumatics plate（9）, the side of upper and lower two square plates with holes is equipped with fixed hollow pressing plate（9）Forcing screw（11）.
4. analog detection coal road according to claim 2 protrudes the device of parameter and prominent relation and rule, its feature
It is：The hole sealing device for being used for prominent simulation includes T-shaped column plug（16）, T-shaped column plug（16）Insert Long Circle
Cylinder body（1）After the through hole on right side, inserted equally in upper and lower two square plates with holes and act against T-shaped column plug（16）On
Pressing plate（17）, pass through the forcing screw in the side of upper and lower two square plates with holes（11）Fixation clip（17）.
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| CN105823854A (en) * | 2016-03-21 | 2016-08-03 | 中国矿业大学 | Gas-solid coupling test device and method for deep coal bed gas drilling drainage effect |
| CN108088718B (en) * | 2017-12-22 | 2020-06-19 | 徐州恒安煤矿技术有限公司 | Underground coal seam soft layering simulation replication method and small-sized soft layering pressing device |
| CN110261233B (en) * | 2019-07-02 | 2020-09-25 | 中国矿业大学 | Method for testing delay outburst critical gas pressure and delay time |
| CN111912685B (en) * | 2020-08-07 | 2022-12-20 | 徐州恒安煤矿技术有限公司 | Method and device for measuring coal seam outburst critical value |
| CN112284965B (en) * | 2020-10-16 | 2022-09-23 | 中煤科工集团重庆研究院有限公司 | Coal roadway driving face drilling flow simulation experiment device and method |
| CN115097095B (en) * | 2022-07-13 | 2023-08-18 | 中国石油大学(华东) | Outburst prediction simulation method and device for extraction working face of outburst coal seam |
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| CN102353608B (en) * | 2011-07-08 | 2013-02-13 | 中国矿业大学 | Device and method for measuring prediction index critical value of coal and gas outburst |
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