CN104880738A - Method and device for simulating detection of relation of coal burst parameter with burst and burst rule - Google Patents

Method and device for simulating detection of relation of coal burst parameter with burst and burst rule Download PDF

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Publication number
CN104880738A
CN104880738A CN201510334864.1A CN201510334864A CN104880738A CN 104880738 A CN104880738 A CN 104880738A CN 201510334864 A CN201510334864 A CN 201510334864A CN 104880738 A CN104880738 A CN 104880738A
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coal
plug
outstanding
long circle
gas
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CN104880738B (en
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唐俊
陈裕佳
李晓伟
蒋承林
徐乐华
田世祥
杨丁丁
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China University of Mining and Technology CUMT
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China University of Mining and Technology CUMT
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Abstract

The invention discloses a method and device for simulating the detection of the relation of a coal burst parameter with burst and the burst rule, and belongs to a test method and device for predicting coal burst. The device consists of a long cylindrical cylinder; a supporting plate; a pressure column; a bearing rod; a sealing plate; a coal body containing gas; a T-shaped tubular plug; a plug sealing cover; a hollow pressure plate; a hinge turnover plate; a pressurizing screw; a pressure meter interface; a short fixed rod; a long fixed rod; and an inflating port. During the measurement of the coal burst parameter, a coal sample is added in the cylinder and is pressed and molded, and then is vacuumized and filled with gas, thereby forming the coal body containing gas. An electric coal drill is used for driving an auger bit to pass through the T-shaped tubular plug and enters into the coal body in the cylinder for measurement. During the burst simulation, the T-shaped tubular plug, the plug sealing cover and the hollow pressure plate are replaced by a plug and a pressure plate. The coal body containing gas is made according to the same requirements, and a jack is used for jacking and opening the pressure plate, so as to observe the condition of coal burst. The device is simple in structure, is accurate in testing, and can detect whether the coal burst parameter is accurate or not and the critical value of burst.

Description

The method and apparatus of parameter and outstanding relation and rule given prominence to by analog detection coal road
Technical field
The present invention relates to the method and apparatus that a kind of analog detection coal road gives prominence to parameter and outstanding relation and rule, whether especially a kind of various coal road of test in laboratory that is applicable to is given prominence to parameter and can be predicted outstanding and determine the method and apparatus of inrush critical value.
Background technology
As everyone knows, the coal road outburst prediction method that current down-hole generally adopts is " point prediction " method entirely, " control coal and gas prominent specifies " the 74th article of regulation: following method can be adopted to predict the outburst hazard of Driving Face in Coal Tunnel;
1. method of drilling index;
2. composite index method;
3.R value index method;
4. other confirm effective method (drilling cuttings temperature, coal temperature blow out after gas outburst amount etc.) through test.
" control coal and gas prominent regulation " the 75th article, 76 and 77 applying steps respectively providing front 3 kinds of conventional coal road outburst prediction methods.The feature of these methods is exactly that the critical value of the index and recommendation measuring coal road workplace front point by drilling contrasts, if be greater than critical value be just predicted as area of coal mining face with potential outburst danger, otherwise is just predicted as the workplace without outburst danger.(list of references: national security production supervision management board, national Coal Mine Safety Supervision Bureau works out, " control coal and gas prominent regulation ", Coal Industry Press, in July, 2009, P50 ~ P54.)。These methods come from the summary of experience in the long-term production run at the scene of people, have certain reference value.
The weak point of said method is: the situation adopting these method forecasting inaccuracies often appears in colliery, various places in production practices, even there is the example that low index is outstanding in what have, cause serious casualty accident, the workman also gone into the well to scene causes serious psychology panic.Cause the reason of this situation to be no doubt the principal element that these coal road outburst prediction indexs fail to reflect that coal road is outstanding, cause prediction to start a leak.But still these methods of most critical just do not allow scene consult and use with the form of standard through test in laboratory after proposing.If first through test in laboratory after any coal road outburst prediction index proposes, prediction index and critical value are supplied to scene accurately, those, insensitive and inaccurate index rejecting, just can avoid scene to occur casualty accident, also greatly improve the drivage efficiency of coal road simultaneously.
But set up a complete coal road and give prominence to parametric measurement and outstanding analogue means difficult for very much, people can set up stone door punching coal outburst prediction Indexs measure and outstanding analogue means in the past, were because terrestrial stress and gas pressure can regard impartial as in the coal seam in crossdrift front.And terrestrial stress and gas pressure distribution are unequal in the coal seam in coal road front, there is a release drainage near exposure place, more go deep into coal seam, terrestrial stress and gas pressure larger, deep also exists a concentrated stress band.And outstanding is exactly often that concentrated stress band coal body opens suddenly rear generation, and the length of release drainage is often change.Therefore, outstanding parametric measurement and the outstanding analogue means that set up coal road will must have breakthrough in method.
Summary of the invention
Technical matters: the object of the invention is for Problems existing in prior art, provides a kind of structure is simple, easy to operate, test result is accurate, safe and reliable analog detection coal road to give prominence to the method and apparatus of parameter and outstanding relation and rule.
Technical scheme: the method for parameter and outstanding relation and rule given prominence to by analog detection coal road of the present invention, comprises the steps:
A. from colliery scene samples of coal pulled, be sieved to below 2mm after pulverizing, add water or diesel oil, be fully uniformly mixed, agglomerating to hold coal dust, hand pine coal group voluntarily cracking is as the criterion, and then loads in sealing bucket for subsequent use;
B. by in-built mixed earth and the T-shaped tubulose plug being connected with plug gland bonnet loads in the through hole on the right side of Long Circle cylinder body, in symmetrically arranged long fixed bar and hinged turnover panel, plug-in mounting is pressed in the hollow pressing plate on T-shaped tubulose plug, is tightly fixed on T-shaped tubulose plug by forcing screw by hollow pressing plate;
C. gradation quantitatively takes the coal sample in sealing bucket, the coal sample once quantitatively taken is put into oblong cylinder body, strikes off, then compression leg is put into Long Circle cylinder body, whole device is pushed in pressing machine, guarantees that the center of effort of whole device is consistent with the center of pressing machine;
D. pressurizeed to the compression leg on Long Circle cylinder body by pressing machine, by the coal sample compacting once added in Long Circle cylinder body, voltage stabilizing half an hour, guarantee that in coal, air is overflowed completely, continue to add the coal sample of an equivalent and compacting in Long Circle cylinder body, so repeated multiple times, until the coal sample of successively compacting in Long Circle cylinder body to be reached the thickness of setting;
E. tensimeter is connected with pressure gauge connection, the pressure of set pressure machine, keep continuing to exert pressure to compression leg, vacuumized by the coal sample of front and back inflation inlet to compacting in Long Circle cylinder body 1, backward coal sample in be filled with methane gas to methane gas pressure stability, continue 48 hours, at this moment, the press pressure be applied in shaping coal sample is equivalent to terrestrial stress, and the methane gas pressure in coal seam is equivalent to the gas pressure in coal seam, the coal sample of the compacting in Long Circle cylinder body is equivalent to the coal seam with gas in a workplace front, lump coal lane;
F. in two circular holes of compression leg, insert two pressure-bearing rods, and put into cushion block between pressure-bearing rod revealed section and Long Circle cylinder upper end face, both maintenances contact but the state do not stressed;
G. plug gland bonnet is turned on, being threaded of T-shaped tubulose plug entrance, outstanding parametric measurement instrument is installed, be inserted in T-shaped tubulose plug with twist drill rods through outstanding parametric measurement instrument, connecting hand drill drives auger bit to drill from T-shaped tubulose plug until enter coal sample gassy through mixed earth, while creeping into, the Coal Outburst parameter of period mensuration of being drilled by the collection of outstanding parametric measurement instrument, until creep into the Long Circle cylinder body end, stopping is crept into, and obtains the outstanding supplemental characteristic of this coal seam with gas;
H. after moving back brill, stop pressing machine work, release Long Circle cylinder body, by pressure-bearing rod compression leg risen and hang out, remove the coal sample in Long Circle cylinder body, take off T-shaped tubulose plug and hollow pressing plate, change T-shaped column plug and pressing plate into, and by forcing screw, pressing plate is tightly fixed on T-shaped column plug;
I. repeat step c, d, e, f, the same coal sample in sealing bucket is added compaction moulding in Long Circle cylinder body, and vacuumizes and inflate, forms one and identical coal seam with gas before;
J. on the boss of pressing plate, a lifting jack is placed, utilize lifting jack upwards crown hinge chain turnover panel, hinge turnover panel is upturned along articulated joint, the top downward upset out of hand of pressing plate falls, T-shaped column plug loses external force, methane gas in Long Circle cylinder body in coal seam with gas will push the T-shaped column plug losing external force open, spray the through hole of coal sample on the right side of Long Circle cylinder body, according to amount and the power size of coal sample ejection, thus determine: outstanding, weak outstanding, outstanding or give prominence to by force, obtain the sample data whether a coal road is given prominence to;
K. according to different forming pressures, different terrestrial stress and gas pressure carry out test of many times, multiple sample data can be obtained, utilize techniques of discriminant analysis multiple sample data to be processed, thus show that whether relevant and outstanding this outstanding parameter and coal road give prominence to critical value.
The coal sample that described gradation quantitatively takes in sealing bucket is 10-16kg.
The described time vacuumized to the compacting coal sample in Long Circle cylinder body is 12 hours.
The device of parameter and outstanding relation and rule given prominence to by a kind of analog detection coal road realizing said method, comprise the Long Circle cylinder body placing coal seam with gas, Long Circle cylinder body is provided with the seal pad be placed on coal seam with gas, compression leg is provided with on seal pad, compression leg and seal pad are fixed together, on compression leg, symmetry has the circular hole arranging pressure-bearing rod, described Long Circle cylinder body front and back sides is respectively equipped with inflation inlet, left surface is provided with tensimeter connector, right flank is provided with the through hole creeping into or observe Gas Outburst in coal seam with gas to coal seam with gas, through hole is provided with mensuration coal road and gives prominence to parameter or the hole sealing device for outstanding simulation.
The hole sealing device that parameter given prominence to by described mensuration coal road comprises the T-shaped tubulose plug of in-built mixed earth, the plug gland bonnet be located on T-shaped tubulose plug, the upper and lower sides of described T-shaped tubulose plug is provided with fixed bar, the short fixed bar in top is hinged with the hinged turnover panel of a square plate with holes, the front end of lower minister's fixed bar is the with holes square plate corresponding with upper articulation turnover panel, be fitted with the hollow pressing plate leaned on T-shaped tubulose plug in upper and lower two square plates with holes, the side of upper and lower two square plates with holes is equipped with the forcing screw of fixing hollow pressing plate.
The described hole sealing device for outstanding simulation comprises T-shaped column plug, after T-shaped column plug inserts the through hole on the right side of Long Circle cylinder body, equally in upper and lower two square plates with holes, be fitted with the pressing plate leaned on T-shaped column plug, the side of upper and lower two square plates with holes is equipped with the forcing screw of fixation clip.
Described Long Circle inferior part of the cylinder block is provided with supporting plate, and supporting plate is provided with the screw of convenient carrying.
Described seal pad is double-layer seal plate, and double-layer seal plate is provided with O RunddichtringO.
Beneficial effect, owing to have employed such scheme, the present invention can measure the outstanding parameter of coal road and simulate outstanding in laboratory, although this device does not have the outstanding parameter of release drainage in the coal body of simulated determination coal road workplace front, it can the outstanding parameter of that section of coal body of simulated determination coal road workplace front most outburst danger.Both can having ensured that the coal seam with gas for measuring outstanding parameter was identical with outstanding coal seam with gas of simulating, turn avoid the danger that field observation protrusion phenomenon may run into.Present invention employs Long Circle cylinder body, and the twist drill rods adopting colliery scene generally to adopt is drilled, samples of coal pulled or the gas flow data measured in boring, can meet existing most of coal road and give prominence to parametric measurement requirement, namely can give prominence to parameter to most of coal road and detect.Show through a large amount of mensuration and outstanding simulated experiment, effect is fine.When adopting twist drill rods to drill to the coal seam with gas in Long Circle cylinder body, the higher gas flow if period of drilling gushes out, then same coal sample, when outstanding simulation, may occur weak outstanding, give prominence to even by force.And the gas flow gushed out during drilling is very little, then there is dynamic phenomenon hardly when outstanding simulation in same coal sample.By this detection, those can be given prominence to responsive index to coal road and inrush critical value is directly used in colliery scene.Major advantage is compared with prior art as follows:
Adopt the compressing coal seam with gas of Long Circle cylinder body, then with twist drill rods, compressing coal body gassy is drilled, samples of coal pulled or gas flow data, the fact that simulated field detects, check the outstanding parameter of coal road with this, solve the problem being difficult to the outstanding parametric test difficulty of carrying out at colliery scene.Parameter can be given prominence to various coal road in the lab directly measure and simulate outstanding, whether these coal roads for confirmation are given prominence to parameter and are given prominence to relevant to coal road, namely outstanding responsive to coal road, there is provided those to give prominence to the inrush critical value of responsive parameter to coal road simultaneously, for scene prediction the outstanding of coal road provides foundation, both ensure that the accuracy of checking work, turn avoid the outstanding harm brought.Its structure is simple, easy to operate, and test result is accurate, safe and reliable, has practicality widely in the art.
Accompanying drawing explanation
Fig. 1 is that parametric measurement structure schematic front view given prominence to by coal road of the present invention.
Fig. 2 is that parametric measurement structure schematic top plan view given prominence to by coal road of the present invention.
Fig. 3 is that model configuration schematic diagram given prominence to by coal road of the present invention.
In figure: 1-Long Circle cylinder body; 2-supporting plate; 3-compression leg; 4-pressure-bearing rod; 5-seal pad; 6-coal seam with gas; 7-T shape tubulose plug; 8-plug gland bonnet; 9-hollow pressing plate; 10-hinge turnover panel; 11-forcing screw; 12-pressure gauge connection, the short fixed bar of 13-; The long fixed bar of 14-; 15-inflation inlet; 16-T shape column plug; 17-pressing plate.
Embodiment
Below in conjunction with accompanying drawing, one embodiment of the present of invention are further described:
The method of parameter and outstanding relation and rule given prominence to by analog detection coal road of the present invention, on special Long Circle cylinder body, coal sample is suppressed by pressing machine, be filled with gas, form one section of coal body gassy, replace the coal body of that section of most outburst danger in the concentrated stress band of coal road workplace front with this.Drill to compressing coal seam with gas, measure coal road and give prominence to parameter; Then the plug that simulation is outstanding is changed, same coal body is compressing by same requirement, the protrusion phenomenon after simulation throws open.Repeatedly after test, whether just can detecting this coal road, to give prominence to parameter outstanding to on-the-spot coal road relevant, whether can be used for prediction coal road give prominence to and obtain its critical value of giving prominence to, and for colliery scene provides the foundation of prediction, concrete steps are as follows:
A. from colliery scene samples of coal pulled, be sieved to below 2mm after pulverizing, add water or diesel oil, be fully uniformly mixed, agglomerating to hold coal dust, hand pine coal group voluntarily cracking is as the criterion, and then loads in sealing bucket for subsequent use;
B. by in-built mixed earth and the T-shaped tubulose plug 7 being connected with plug gland bonnet loads in the through hole on the right side of Long Circle cylinder body 1, in symmetrically arranged long fixed bar and hinged turnover panel, plug-in mounting is pressed in the hollow pressing plate 9 on T-shaped tubulose plug 7, is tightly fixed on T-shaped tubulose plug 7 by forcing screw 11 by hollow pressing plate 9;
C. gradation quantitatively takes the coal sample in sealing bucket, and the coal sample that described gradation quantitatively takes in sealing bucket is 10-16kg; The coal sample once quantitatively taken is put into oblong cylinder body 1, strikes off, then compression leg 3 is put into Long Circle cylinder body 1, whole device is pushed in pressing machine, guarantee that the center of effort of whole device is consistent with the center of pressing machine;
D. pressurizeed to the compression leg 3 on Long Circle cylinder body 1 by pressing machine, by the coal sample compacting once added in Long Circle cylinder body 1, voltage stabilizing half an hour, guarantee that in coal, air is overflowed completely.Continue to add the coal sample of an equivalent and compacting in Long Circle cylinder body 1, so repeated multiple times, until the coal sample of successively compacting in Long Circle cylinder body 1 to be reached the thickness of setting;
E. tensimeter is connected with pressure gauge connection 12, the pressure of set pressure machine, keep continuing to exert pressure to compression leg 3,12 hours are vacuumized by the coal sample of compacting in front and back inflation inlet 15 pairs of Long Circle cylinder bodies 1, backward coal sample in be filled with methane gas to methane gas pressure stability, continue 48 hours, at this moment, the press pressure be applied in shaping coal sample is equivalent to terrestrial stress, and the methane gas pressure in coal seam is equivalent to the gas pressure in coal seam, the coal sample of the compacting in Long Circle cylinder body 1 is equivalent to the coal seam with gas 6 in a workplace front, lump coal lane;
F. in two circular holes of compression leg 3, insert two pressure-bearing rods 4, and put into cushion block between pressure-bearing rod 4 revealed section and Long Circle cylinder body 1 upper surface, both maintenances contact but the state do not stressed;
G. plug gland bonnet 8 is turned on, being threaded of T-shaped tubulose plug 7 entrance, outstanding parametric measurement instrument is installed, be inserted in T-shaped tubulose plug 7 with twist drill rods through outstanding parametric measurement instrument, connecting hand drill drives auger bit to drill from T-shaped tubulose plug 7 until enter coal sample gassy through mixed earth, while creeping into, the Coal Outburst parameter of period mensuration of being drilled by the collection of outstanding parametric measurement instrument, until creep into Long Circle cylinder body 1 end, stopping is crept into, and obtains the outstanding supplemental characteristic of this coal seam with gas;
H. after moving back brill, stop pressing machine work, release Long Circle cylinder body 1, by pressure-bearing rod 4, compression leg 3 is hung out, remove the coal sample in Long Circle cylinder body 1, take off T-shaped tubulose plug 7 and hollow pressing plate 9, change T-shaped column plug 16 and pressing plate 17 into, and by forcing screw 11, pressing plate 17 is tightly fixed on T-shaped column plug 16;
I. repeat step c, d, e, f, the same coal sample in sealing bucket is added compaction moulding in Long Circle cylinder body 1, and vacuumizes and inflate, forms one and identical coal seam with gas before;
J. on the boss of pressing plate 17, a lifting jack is placed, utilize lifting jack upwards crown hinge chain turnover panel 10, hinge turnover panel 10 is upturned along articulated joint, the top downward upset out of hand of pressing plate 17 falls, T-shaped column plug 16 loses external force, methane gas in Long Circle cylinder body 1 in coal seam with gas 6 will push the T-shaped column plug 16 losing external force open, spray the through hole of coal sample on the right side of Long Circle cylinder body 1, according to amount and the power size of coal sample ejection, thus determine: do not give prominence to, weak outstanding, outstanding, or give prominence to by force, obtain the sample data whether a coal road is given prominence to,
K. according to different forming pressures, different terrestrial stress and gas pressure carry out test of many times, multiple sample data can be obtained, utilize techniques of discriminant analysis multiple sample data to be processed, thus show that whether relevant and outstanding this outstanding parameter and coal road give prominence to critical value.
The device of parameter and outstanding relation and rule given prominence to by analog detection coal road of the present invention, and comprise the Long Circle cylinder body 1 placing coal seam with gas 6, described Long Circle cylinder body 1 bottom is provided with supporting plate 2, and supporting plate 2 is provided with the screw of convenient carrying.Long Circle cylinder body 1 is provided with the seal pad 5 be placed on coal seam with gas 6, and described seal pad 5 is double-layer seal plate, and double-layer seal plate is provided with O RunddichtringO.Seal pad 5 is provided with compression leg 3, and compression leg 3 and seal pad 5 are fixed together, and on compression leg 3, symmetry has the circular hole arranging pressure-bearing rod 4, described Long Circle cylinder body 1 front and back sides is respectively equipped with inflation inlet 15, as shown in Figure 2.Left surface is provided with pressure gauge connection 12, and right flank is provided with the through hole creeping into or observe Gas Outburst in coal seam with gas 6 to coal seam with gas 6, and through hole is provided with mensuration coal road and gives prominence to parameter or the hole sealing device for outstanding simulation.
The hole sealing device that parameter given prominence to by described mensuration coal road comprises T-shaped tubulose plug 7, be located at the plug gland bonnet 8 on T-shaped tubulose plug 7, the upper and lower sides of described T-shaped tubulose plug 7 is provided with fixed bar, the short fixed bar in top 13 is hinged with the hinged turnover panel 10 of a square plate with holes, the front end of lower minister's fixed bar 14 is with holes square plates corresponding with upper articulation turnover panel, the hollow pressing plate 9 leaned on T-shaped tubulose plug 7 is fitted with in upper and lower two square plates with holes, the side of upper and lower two square plates with holes is equipped with the forcing screw 11 of fixing hollow pressing plate 9, as shown in Figure 1.
The described hole sealing device for outstanding simulation comprises T-shaped column plug 16, after T-shaped column plug 16 inserts the through hole on the right side of Long Circle cylinder body, equally in upper and lower two square plates with holes, be fitted with the pressing plate 17 leaned on T-shaped column plug 16, the side of upper and lower two square plates with holes is equipped with the forcing screw 11 of fixation clip 17, as shown in Figure 3.
Be compressing coal seam with gas 6 in Long Circle cylinder body 1, compression leg 3 and seal pad 5 are linked togather, and are pressed on coal seam with gas 6, constitute a kind of sealing system that can pressurize.After turning on plug gland bonnet 8 with sleeve, existing various coal road is given prominence to parametric measurement instrument and can be connected on the screw thread of T-shaped tubulose plug 7.When with twist drill rods through the pipeline of determining instrument, after punching the mixed earth on T-shaped tubulose plug 7, namely drill bit enters in coal seam with gas, at this moment just can samples of coal pulled or drilling gas flow, so that the mensuration requirement giving prominence to parameter according to difference measures.
There is the situation of giving prominence to when exposing suddenly in the coal body that the device that described analog detection coal road gives prominence to parameter and outstanding relation and rule can also simulate coal road front.When needs simulation is outstanding, by T-shaped tubulose plug 7, plug gland bonnet 8, hollow pressing plate 9 is replaced as T-shaped column plug 16 and pressing plate 17.Same coal sample is compressing at Long Circle cylinder body 1 with step after the same method, the gas of same pressure is filled with after vacuumizing, leave standstill 48 hours, then under the condition keeping press pressure, pressing plate is thrown open with lifting jack, under the effect of T-shaped column plug 16 coal and non-coal pressure in Long Circle cylinder body 1, outwards fly out.According to the Distance geometry weight whether dish out coal sample and coal sample fly out, can by qualitative for the dynamic phenomenon of this coal sample be non-protruding, weak outstanding and give prominence to by force.After test of many times, by techniques of discriminant analysis process data, can do you just find out that this coal road is given prominence to parameter and had correlativity with coal road is outstanding? the outburst prediction of coal road and outstanding critical value can be used for, provide reliable foundation for colliery scene carries out outburst prediction.
Described analog detection coal road is given prominence in the device of parameter and outstanding relation and rule, and two pressure-bearing rods 4 installed by compression leg 3, and pressure-bearing rod 4 is thicker, through compression leg 3, are directly shelved on the top of Long Circle cylinder body 1.After pressing machine pressurization leaves standstill, between pressure-bearing rod 4 and circular cylinder body 1, pad upper steel plate, make pressure-bearing rod 4 be in unstressed contact condition with the upper surface of Long Circle cylinder body 1.In the process of drilling or in outstanding simulation process, coal deformation in Long Circle cylinder body 1 loosens, compression leg 3 under the effect of pressing machine to bottom offset, at this moment the pressure of pressing machine just transfers to Long Circle cylinder body 1 by pressure-bearing rod 4, the coal body loosened in Long Circle cylinder body 1 will avoid the destruction of the distortional stress of pressing machine, and when this and on-the-spot coal seam occur outstanding, the peripherad coal seam of rock pressure [in mine is shifted is the same.

Claims (8)

1. a method for parameter and outstanding relation and rule given prominence to by analog detection coal road, it is characterized in that comprising the steps:
A. from colliery scene samples of coal pulled, be sieved to below 2mm after pulverizing, add water or diesel oil, be fully uniformly mixed, agglomerating to hold coal dust, hand pine coal group voluntarily cracking is as the criterion, and then loads in sealing bucket for subsequent use;
B. by in-built mixed earth and be connected with plug gland bonnet (8) T-shaped tubulose plug (7) load Long Circle cylinder body (1) right side through hole in, in symmetrically arranged long fixed bar (14) and hinged turnover panel (10), plug-in mounting is pressed in the hollow pressing plate (9) on T-shaped tubulose plug (7), is tightly fixed on T-shaped tubulose plug (7) by forcing screw (11) by hollow pressing plate (9);
C. gradation quantitatively takes the coal sample in sealing bucket, the coal sample once quantitatively taken is put into oblong cylinder body (1), strike off, again compression leg (3) is put into Long Circle cylinder body (1), whole device is pushed in pressing machine, guarantees that the center of effort of whole device is consistent with the center of pressing machine;
D. by pressing machine to compression leg (3) pressurization on Long Circle cylinder body (1), by the coal sample compacting once added in Long Circle cylinder body (1), voltage stabilizing half an hour, guarantee that in coal, air is overflowed completely.Continue the coal sample to Long Circle cylinder body (1) interior interpolation equivalent and compacting, so repeated multiple times, until the coal sample of successively compacting in Long Circle cylinder body (1) to be reached the thickness of setting;
E. tensimeter is connected with pressure gauge connection (12), the pressure of set pressure machine, keep continuing to exert pressure to compression leg (3), by front and back inflation inlet (15), the coal sample of compacting in Long Circle cylinder body (1) is vacuumized, backward coal sample in be filled with methane gas to methane gas pressure stability, continue 48 hours, at this moment, the press pressure be applied in shaping coal sample is equivalent to terrestrial stress, and the methane gas pressure in coal seam is equivalent to the gas pressure in coal seam, in Long Circle cylinder body (1), the coal sample of compacting is equivalent to the coal seam with gas (6) in a workplace front, lump coal lane,
F. in two circular holes of compression leg (3), insert two pressure-bearing rods (4), and put into cushion block between pressure-bearing rod (4) revealed section and Long Circle cylinder body (1) upper surface, both maintenances contact but the state do not stressed;
G. plug gland bonnet (8) is turned on, being threaded of T-shaped tubulose plug (7) entrance, outstanding parametric measurement instrument is installed, be inserted in T-shaped tubulose plug (7) with twist drill rods through outstanding parametric measurement instrument, connecting hand drill drives auger bit to drill from T-shaped tubulose plug (7) until enter coal sample gassy through mixed earth, while creeping into, the Coal Outburst parameter of period mensuration of being drilled by the collection of outstanding parametric measurement instrument, until creep into Long Circle cylinder body (1) end, stopping is crept into, obtain the outstanding supplemental characteristic of this coal seam with gas,
H. after moving back brill, stop pressing machine work, release Long Circle cylinder body (1), by pressure-bearing rod (4), compression leg (3) is hung out, remove the coal sample in Long Circle cylinder body (1), take off T-shaped tubulose plug (7) and hollow pressing plate (9), change T-shaped column plug (16) and pressing plate (17) into, and by forcing screw (11), pressing plate (17) is tightly fixed on T-shaped column plug (16);
I. repeat step c, d, e, f, the same coal sample in sealing bucket is added compaction moulding in Long Circle cylinder body (1), and vacuumizes and inflate, forms one and identical coal seam with gas before;
J. on the boss of pressing plate (17), a lifting jack is placed, utilize lifting jack upwards crown hinge chain turnover panel (10), hinge turnover panel (10) is upturned along articulated joint, the top downward upset out of hand of pressing plate (17) falls, T-shaped column plug (16) loses external force, methane gas in Long Circle cylinder body (1) interior coal seam with gas (6) will push the T-shaped column plug (16) losing external force open, coal sample sprays from the through hole on Long Circle cylinder body (1) right side, according to amount and the power size of coal sample ejection, thus determine: do not give prominence to, weak outstanding, outstanding, or give prominence to by force, obtain the sample data whether a coal road is given prominence to,
K. according to different forming pressures, different terrestrial stress and gas pressure carry out test of many times, multiple sample data can be obtained, utilize techniques of discriminant analysis multiple sample data to be processed, thus show that whether relevant and outstanding this outstanding parameter and coal road give prominence to critical value.
2. the method for parameter and outstanding relation and rule given prominence to by the analog detection coal road as requested described in 1, it is characterized in that: the coal sample that described gradation quantitatively takes in sealing bucket is 10-16kg.
3. the method for parameter and outstanding relation and rule given prominence to by the analog detection coal road as requested described in 1, it is characterized in that: the described time vacuumized to the compacting coal sample in Long Circle cylinder body (1) is 12 hours.
4. the device of parameter and outstanding relation and rule given prominence to by the analog detection coal road realizing method described in claim 1, it is characterized in that: it comprises the Long Circle cylinder body (1) placing coal seam with gas (6), Long Circle cylinder body (1) is provided with the seal pad (5) be placed on coal seam with gas (6), seal pad (5) is provided with compression leg (3), compression leg (3) and seal pad (5) are fixed together, the upper symmetry of compression leg (3) has the circular hole arranging pressure-bearing rod (4), described Long Circle cylinder body (1) front and back sides is respectively equipped with inflation inlet (15), left surface is provided with pressure gauge connection (12), the through hole of Gas Outburst during right flank is provided with and creeps into or observe coal seam with gas (6) to coal seam with gas (6), through hole is provided with mensuration coal road and gives prominence to parameter or the hole sealing device for outstanding simulation.
5. the device of parameter and outstanding relation and rule given prominence to by analog detection coal road according to claim 2, it is characterized in that: the hole sealing device that parameter given prominence to by described mensuration coal road comprises the T-shaped tubulose plug (7) of in-built mixed earth, be located at the plug gland bonnet (8) on T-shaped tubulose plug (7), the upper and lower sides of described T-shaped tubulose plug (7) is provided with fixed bar, the short fixed bar in top (13) is hinged with the hinged turnover panel (10) of a square plate with holes, the front end of lower minister's fixed bar (14) is the with holes square plate corresponding with upper articulation turnover panel (10), the hollow pressing plate (9) leaned on T-shaped tubulose plug (7) is fitted with in upper and lower two square plates with holes, the side of upper and lower two square plates with holes is equipped with the forcing screw (11) of fixing hollow pressing plate (9).
6. the device of parameter and outstanding relation and rule given prominence to by analog detection coal road according to claim 2, it is characterized in that: the described hole sealing device for outstanding simulation comprises T-shaped column plug (16), after T-shaped column plug (16) inserts the through hole on Long Circle cylinder body (1) right side, equally in upper and lower two square plates with holes, plug-in mounting leans the pressing plate (17) on T-shaped column plug (16), by forcing screw (11) fixation clip (17) of the side at upper and lower two square plates with holes.
7. the device of parameter and outstanding relation and rule given prominence to by analog detection coal road according to claim 2, it is characterized in that: described Long Circle cylinder body (1) bottom is provided with supporting plate (2), supporting plate (2) is provided with the screw of convenient carrying.
8. the device of parameter and outstanding relation and rule given prominence to by analog detection coal road according to claim 2, it is characterized in that: described seal pad (5) is double-layer seal plate, and double-layer seal plate is provided with O RunddichtringO.
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