CN107725101A - Rock body quality of mine drilling multisection type gas pumping method - Google Patents
Rock body quality of mine drilling multisection type gas pumping method Download PDFInfo
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- CN107725101A CN107725101A CN201710961066.0A CN201710961066A CN107725101A CN 107725101 A CN107725101 A CN 107725101A CN 201710961066 A CN201710961066 A CN 201710961066A CN 107725101 A CN107725101 A CN 107725101A
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- rock body
- multisection type
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- 238000005553 drilling Methods 0.000 title claims abstract description 85
- 239000011435 rock Substances 0.000 title claims abstract description 60
- 238000005086 pumping Methods 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000007789 sealing Methods 0.000 claims abstract description 37
- 238000012360 testing method Methods 0.000 claims abstract description 35
- 239000000523 sample Substances 0.000 claims abstract description 31
- 230000000903 blocking effect Effects 0.000 claims abstract description 21
- 241001149930 Protura <class> Species 0.000 claims abstract description 8
- 238000000605 extraction Methods 0.000 claims description 22
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 22
- 230000007246 mechanism Effects 0.000 claims description 15
- 239000003245 coal Substances 0.000 claims description 9
- 230000001141 propulsive effect Effects 0.000 claims description 9
- 230000009471 action Effects 0.000 claims description 5
- 238000004880 explosion Methods 0.000 claims description 4
- 238000004458 analytical method Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 74
- 239000002775 capsule Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 8
- 238000010276 construction Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 2
- 230000001413 cellular effect Effects 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 235000019795 sodium metasilicate Nutrition 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/122—Multiple string packers
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/126—Packers; Plugs with fluid-pressure-operated elastic cup or skirt
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/08—Valve arrangements for boreholes or wells in wells responsive to flow or pressure of the fluid obtained
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Sampling And Sample Adjustment (AREA)
- Earth Drilling (AREA)
Abstract
Drilled multisection type gas pumping method the invention discloses rock body quality of mine, it solves the problems, such as borehole sealing effect difference in the prior art, has a good sealing effect, beneficial effect simple to operate, and its scheme is as follows：Using a kind of rock body quality of mine drilling multisection type gas pumping test probe, test probe includes：At least three first closure units, two of which first blocks unit and is respectively arranged on both ends, and the first closure unit of head end is connected with conehead, middle part first is connected between blocking the two neighboring first closure unit between unit and the closure unit of head end first by collection tube, and collection tube side wall is provided with several the second perforates for carrying one-way seals；Second closure unit, blocked located at afterbody first between unit and the closure of middle part first unit, and second closure unit and afterbody first block unit between communicating pipe is set, second closure unit side sets side leakage valve, and drilling and surrounding rock body crack between unit and side leakage valve are blocked for blocking afterbody first.
Description
Technical field
The present invention relates to rock body quality of mine hole pumping and mining technical field, is taken out more particularly to rock body quality of mine drilling multisection type gas
Mining method.
Background technology
Gas is the adverse factor in coal production, and it not only pollutes air, and when content increases, meet fire can produce it is quick-fried
Fried, gas is the mixed gas of the compositions such as the methane, carbon dioxide and nitrogen escaped from coal and country rock, and gas pressure and gas contain
Amount is to indicate the important parameter of coal-bed gas occurrence status.And the measure of coal-bed gas pressure and gas bearing capacity, not only facilitate
The rule studied the preservation of coal-bed gas and gushed out, and gas pumping can turn bane into boon, and the resource as coal association adds
With utilization.The drilling of setting quantity is generally drilled with coal body in the prior art, by vavuum pump come extraction, in extraction
Needed in journey to drilling block, to avoid methane gas excessive, frequently with method be into drilling fill concrete fill
Filling chock material installs 2 pieces of baffle plates in the borehole, forms sealing space, and irrigated into this sealing space by single pipeline
There is many defects in filler, existing closure mode, such as：
1) plugging device is complicated in pipeline, causes assembling difficult, and easily causes to block medium back flow, Jin Erying
Ring to closure speed；
2) can not drill the closure set outside to collection tube, drilling can be blocked, can not ensure to drill again
Closure is blocked in order with the cavity that drilled outside collection tube, can not ensure the interior closure quality that drills；
3) gas pumping pipeline is separate with blocking pipe in drilling, there is more pipelines (generally 2~3) easily hair
Raw pipeline winding problem, not only sealing of hole efficiency is low, troublesome in poeration, and less stable；
4) it is not easy to operate moreover, the setting of more pipelines of prior art, causes extraction operating method complicated；
5) closure medium uses solid dielectric more, after cured, crack performance easily occurs or solid material can not be right
The wall of a borehole surrounding rock body crack of correspondent section is sealed, and uses two-part sealing means more, and sealing effectiveness is poor；
6) traditional gas drainage system is mostly expendable consumed product, can not typically reuse, improve gas pumping
Cost；
7) it is mostly unistage type structure, is closed at the both ends of drainage tube, if long, drilled in middle hole easily collapses, and influences
Extracting result, if too short, each rock body drilled gas pumping scope is smaller, if carry out depth gas acquisition if, it is necessary to other
Drilling, undoubtedly further increases extraction cost.
As can be seen here, existing issue is up for further solving.
The content of the invention
, should the invention provides rock body quality of mine drilling multisection type gas pumping method for overcome the deficiencies in the prior art
Pumping method has widened the extraction scope or length of disposable rock mass gas, extraction efficiency high, and simple to operate.
The concrete scheme of rock body quality of mine drilling multisection type gas pumping method is as follows：
Rock body quality of mine drilling multisection type gas pumping method, using a kind of drilling multisection type gas pumping test of rock body quality of mine
Probe, the test probe include：
At least three first closure units, two of which first block unit and are respectively arranged on both ends, and the first envelope of head end
Stifled unit is connected with conehead, and middle part first blocks the two neighboring first closure unit between unit and the closure unit of head end first
Between connected by collection tube, collection tube side wall be provided with several carry one-way seals the second perforate；
Second closure unit, blocked located at afterbody first between unit and the closure of middle part first unit, and the second closure is single
Member and afterbody first set communicating pipe between blocking unit, and the second closure unit side sets side leakage valve, and closure medium passes through side
Leakage valve flows to the space between the closure unit of afterbody first and the second closure unit, and unit and side are blocked for blocking afterbody first
Drilling and surrounding rock body crack between leakage valve, multiple closure sealing can be effectively carried out to drilling, avoids there was only two in the prior art
Closure, sealing effectiveness has been effectively ensured, improve gas acquisition efficiency.
Further, the first closure unit includes the first tubular configured joint, and elasticity envelope is set outside the first tubular configured joint
Blocking piece, the 4th switch is provided with the first tubular configured joint side wall, closure medium is opened the 4th switch by the first tubular configured joint and entered
Space between first tubular configured joint and elastic closeouts, elastic closeouts, which swell, plays plugging action.
Further, it is in T-shaped block that the 4th switch, which includes longitudinal cross-section, and described first is passed through in the middle part of block
Tubular configured joint is set, and also sets up support between block and the first tubular configured joint by being cased with the first spring in one's ear after passing through,
Support and the first tubular configured joint are fixed and support side wall is provided with the first perforate, and support and lid upper surface can be annulars
Shape, inside dimension and the support external dimensions of block coordinate, and under normality, block is in the presence of the first spring in closing shape
State, by chance seals up the first perforate, and during filling and blocking medium, the closure medium of certain pressure jacks up block upwards, with first
Perforate forms path, now blocks medium and enters in the first tubular configured joint and the cavity of closeouts (closure capsule), closeouts rise
It is swollen, and because of the setting of the first spring, when blocking medium back flow in collection tube or runner pipe, avoid the first closure unit from shrinking.
Further, the second closure unit includes the second tubular configured joint, and elasticity envelope is set outside the second tubular configured joint
Blocking piece, the 4th switch is provided with the second tubular configured joint side wall, closure medium is opened the 4th switch by the second tubular configured joint and entered
Space between second tubular configured joint and elastic closeouts, elastic closeouts, which swell, plays plugging action, outside the second tubular configured joint
Portion one end is used to fix with the basal body pipe of side leakage valve, and the other end is connected with collection tube, undergauge in the middle part of the second tubular configured joint.
Further, one-way seals are centrum in collection tube, are located at the top of centrum in collection tube, including two sections, from list
Separated to seal centrum middle vertical plane, so play the swollen stage in flexible blockage medium, avoided blocking in medium flow direction drilling, adopting
Not only collection tube can be entered in order to methane gas during collection, after the completion of swollen and anti-reflection process is played, in drilling outside collection tube
Have setting pressure closure medium after anti-reflection effect is formed to rock cranny, can be opened by one-way seals, enter
Collection tube is discharged, to avoid the influence to methane gas collection.
Further, the side leakage valve includes basal body pipe, is fastened inside basal body pipe side with the described second closure unit, set
Outside the second tubular configured joint, basal body pipe opposite side ring is provided with least two the 3rd perforates, and the 3rd apertured end sets regulation
Nut, adjusting nut are contacted by second spring with ball, and ball is at the ladder section of the 3rd perforate.Basal body pipe carries
The sidepiece of adjusting nut is connected with communicating pipe, and the 3rd perforate is symmetrical arranged relative to the central axis of basal body pipe, basal body pipe
Inside is provided with multiple steps, and the internal diameter of itself and the second tubular configured joint junction is more than its internal diameter with communicating pipe junction, and the 3rd
Perforate at large diameter with communicating.
In addition, the Opening pressure of second spring switches on pressure more than the 4th, i.e., when flexible blockage pressure medium is big
In the first spring opening pressure and when being less than second spring Opening pressure, the 4th switch is opened, and now first and second closure unit rises
It is swollen, to stabilization, sealing cavity and collection cavity are formed, continues to increase flexible blockage pressure medium, is opened when more than second spring
When opening pressure, this moment, flexible blockage medium injects to sealing cavity, and seals corresponding surrounding rock body crack, and sealing cavity is brill
The second closure unit sidepiece side leakage valve and afterbody first block the cavity between unit in hole, and collection cavity is in drilling adjacent two
Between individual first closure unit, the cavity between the first closure unit and the second closure unit.
Further, the 3rd perforate is communicated with the 4th perforate, and closure medium is opened after entering in basal body pipe by the 3rd
Hole enters the 4th perforate, hence into drilling.
Further, the closure medium is flexible blockage medium, in flow-like, can be emulsion+sodium metasilicate+
Water, or other media.
Further, both ends diameter is more than mid diameter inside first tubular configured joint, and the first tubular configured joint is in two
The structure of raised central portion depression is held, and the first tubular configured joint both ends high spot is respectively provided with step, and closeouts are supported by the step,
Closeouts wrap and are fixed on the first tubular configured joint center.It is used to connect with collection tube or communicating pipe inside first tubular configured joint
Connect.
For overcome the deficiencies in the prior art, drilled multisection type gas pumping method present invention also offers rock body quality of mine,
Using rock body quality of mine drilling multisection type gas drainage system, the extraction system includes：
Described rock body quality of mine drilling multisection type gas pumping test probe；
Propulsive mechanism, block unit with the afterbody first of test probe and be connected；
Operating mechanism is supplied, blocking unit with propulsive mechanism or afterbody first is detachably connected with to test probe and brill
The flexible blockage medium of setting pressure is provided in hole.
Further, propulsive mechanism is hollow drill, and drilling rod is connected with rig promotes test probe；In collecting tank and afterbody
Electronic pressure gage and gas pressure table are set in the pipeline of first closure unit connection.
Further, the supply operating mechanism includes closure medium tank, and closure medium tank passes through pipeline and afterbody first
The hollow drill of closure unit or propulsive mechanism is detachably connected, and pressure gauge and flowmeter are set in the pipeline, blocks medium
Pipe is connected with the pump housing to provide the closure medium of setting pressure.
The extraction system also includes measuring means, and measuring means includes blocking unit or the pusher with afterbody first
The collecting tank that structure (drilling rod) is detachably connected, such measuring means directly can block unit with afterbody first and be connected, or not tear open
In the case of unloading drilling rod, it is connected with drilling rod；
Further, electronic pressure gage and gas pressure are set in the pipeline that collecting tank is connected with the closure unit of afterbody first
Power table.
Rock body quality of mine drilling multisection type gas pumping method, is comprised the following steps that：
1) mash gas pumping drilling is beaten into top plate or bottom plate coal and rock in tunnel；
2) test probe is installed in tunnel, and test probe is sent to setting regions in drilling；
3) closing drilling：Unit is blocked to communicating pipe, the second closure unit, collection tube, middle part first by afterbody first
Block unit and head end first blocks interior be sent into of unit and blocks medium, the first closure unit and the second closure unit swell to seal and bored
The segment section in hole；
Further, increase closure pressure medium is continued, afterbody first blocks unit and side into drilling by side leakage valve
Cavity further injects into closure medium between leakage valve；
4) Gas explosion burns are determined：Pipe to be collected is with after closure medium flow field sky in communicating pipe, blocking unit by afterbody first and leading to
Cross pipeline to be connected with collecting tank, after setting time, analysis is carried out to methane gas in collecting tank.
After the completion of the step 3), to blocking the drilling finished, pressure test need to be carried out.
Compared with prior art, the beneficial effects of the invention are as follows：
1st, closure extraction system is designed as integral structure, closure and extraction is reduced tradition via same pipeline
The quantity of simultaneous closure and extraction pipeline (being only 1), solves the problems, such as the interior conduit coiling that drills, simplifies in drilling
System architecture and closure process, improve closure efficiency.
2nd, using the first closure unit, the second closure unit and the triple closure modes of sealing cavity, flexible blockage is coordinated to be situated between
Matter, borehole sealing effect is not only enhanced, and sealing function is played in the surrounding rock body crack that can be drilled to seal section, can enter one
Step improves effect.
3rd, equipment uses multisection type extraction plugging structure, not only expands the extraction scope or length of disposable rock mass gas
Degree, and due to supporting role of the multiple first or second closure unit to borehole wall, a wide range of gas pumping can be suppressed
During influence of the borehole collapse to gas pumping.
4th, operating mechanism and measuring means are supplied and afterbody first blocks unit or drilling rod is detachably set, is easy to whole side
The realization of method, and be conveniently replaceable in failure, laid the foundation for stability measurement.
5th, it is easy to recycle, reduces drilling gas extraction cost.
6th, whole operation method facilitates the taking-up of test probe, simple in construction, easy to operate.
Brief description of the drawings
The Figure of description for forming the part of the application is used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its illustrate be used for explain the application, do not form the improper restriction to the application.
Fig. 1 is the general structure schematic diagram in rock body quality of mine drilling multisection type gas drainage system；
Fig. 2 is gas pumping view in rock body quality of mine drilling multisection type gas drainage system；
Fig. 3 is test probe structural representation in rock body quality of mine drilling multisection type gas drainage system；
Fig. 4 is conehead structural representation in rock body quality of mine drilling multisection type gas drainage system；
Fig. 5 is the first closure cellular construction schematic diagram in rock body quality of mine drilling multisection type gas drainage system；
Fig. 6 is the 4th switch structure diagram in rock body quality of mine drilling multisection type gas drainage system；
Fig. 7 is collection tube structural representation in rock body quality of mine drilling multisection type gas drainage system；
Fig. 8 is the second perforate and one-way sealing strip of paper used for sealing structural representation in rock body quality of mine drilling multisection type gas drainage system；
Fig. 9 is communicating tube structure schematic diagram in rock body quality of mine drilling multisection type gas drainage system；
Figure 10 is the second closure cellular construction schematic diagram in rock body quality of mine drilling multisection type gas drainage system；
Figure 11 is side leakage valve arrangement schematic diagram in rock body quality of mine drilling multisection type gas drainage system；
Figure 12 is part-structure schematic diagram in rock body quality of mine drilling multisection type gas drainage system；
Figure 13 is one-way seals schematic diagram in rock body quality of mine drilling multisection type gas drainage system；
In figure, 1, coal and rock, 2, drilling, 3, conehead, the 4, first closure unit, the 5, second closure unit, 6, sealing cavity,
7th, cavity is gathered, 8, communicating pipe, 9, collection tube, 10, drilling rod, 11, flexible pipe, 12, rig, 13, supply operating desk, 14, first opens
Close, 15, pressure gauge, 16, flowmeter, 17, second switch, 18, collect operating desk, the 19, the 3rd switch, 20, gas pressure table,
21st, electronic pressure gage, 22, collecting tank, 23, unidirectional stop valve, 24, flexible blockage medium, 25, side leakage valve, the 26, second tubulose connects
Head, 27, closure capsule, 28, block, the 29, first spring, the 30, first perforate, the 31, second perforate, 32, one-way sealing strip of paper used for sealing, 33,
Basal body pipe, 34, ball, 35, second spring, the 36, the 3rd perforate, 37, adjusting nut, the 38, the 4th switch, the 39, first tubulose
Joint.
Embodiment
It is noted that described further below is all exemplary, it is intended to provides further instruction to the application.It is unless another
Indicate, all technologies used herein and scientific terminology are with usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in this manual using term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
As background technology is introduced, the deficiencies in the prior art, in order to solve technical problem as above, this Shen
It please propose rock body quality of mine drilling multisection type gas pumping method.
In a kind of typical embodiment of the application, as shown in figures 1 and 3, rock body quality of mine drilling multisection type gas is taken out
Extraction system, including test probe, propulsive mechanism, supply operating mechanism and measuring means.
The test probe includes conehead 3, first and blocks unit 4, second blocking unit 5, side leakage valve 25, communicating pipe 8, adopt
Collector 9, as shown in figure 12.
The propulsive mechanism mainly includes drilling rod 10, rig 12, and the drilling rod 10 is connected with test probe afterbody, as connecing
It is long to pass through drilling rod 10 with propulsion double action, the rig 12 and promote test probe to 2 specified locations of drilling.
The supply operating mechanism includes supply operating desk 13, mainly by flexible pipe 11, first switch 14, pressure gauge 15, stream
Scale 16, second switch 17 form.
The measuring means includes collecting operating desk 18, mainly by the 3rd switch 19, gas pressure table 20, electronic pressure gage
21st, unidirectional stop valve 23, collecting tank 22 form, as shown in Figure 2.
The supply operating desk 13 blocks unit 5 and sealing by flexible pipe 11, drilling rod 10 to the first closure unit 4, second
The flexible blockage medium 24 of setting pressure is provided in cavity 6.
The pressure gauge 15 supplies the pressure for the flexible blockage medium 24 that operating desk 13 is provided, the flow to observe
Table 16 is reading the flow that flexible blockage medium 24 passes through.
It is described to collect operating desk 13 to collect the methane gas in collection cavity 7.The gas pressure table 20 is reading
Gas pressure registration is taken, the electronic pressure gage 21 mutually corrects with the gas pressure table 20, ensures gas pressure parameter
Accuracy.The unidirectional stop valve 23 ensure methane gas can only one-way flow into the collecting tank 22.
The quantity of conehead 3 is 1, as shown in figure 4, positioned at the head of test probe, in conical structure, with the first envelope
Stifled unit 4 is threaded, and play the guiding role.
First closure unit 4 quantity is 4, as shown in figure 5, main include closure capsule 27, the first tubular configured joint
39 and the 4th switch 38.The both ends of first tubular configured joint 39 are in the tubular structure of both ends projection intermediate recess, the closure glue
Capsule 27 wraps and is fixed on the center of the first tubular configured joint 39, and the 4th switch 38 is fixed on the outer of the first tubular configured joint 39
End pipe wall centre.
As shown in figure 5, the 4th switch 38 is mainly made up of block 28, the first spring 29 and the first perforate 30.It is described
The longitudinal cross-section of block 28 is in T-Type structure.During normality, block 28 is closed in the presence of the first spring 29, by chance
Seal up the first perforate 30.During filling and blocking medium, the closure medium of certain pressure jacks up block 28 upwards, with the first perforate
30 form path, now block medium and enter in the cavity of the first tubular configured joint 39 and closure capsule 27, closure capsule 27 rises swollen.
The closure medium is flexible blockage medium 24, in flow-like.
The quantity of collection tube 9 is 3, and it is in spiral shell that its left and right ends blocks unit 5 with the first closure unit 4 or second respectively
Line connects, and forms multiple collection cavitys 7, and it is several to be through with the second perforate 31 on the collection tube 9, pacifies in second perforate 31
Equipped with two one-way sealing strip of paper used for sealings 32, two V-shaped structure settings of sealing strip, to facilitate the collection of methane gas, such as Fig. 7 and Fig. 8
Shown, the one-way sealing strip of paper used for sealing 32 is only opened to the inwall of collection tube 9, be may be such that drilling gas is entered by one-way sealing strip of paper used for sealing 32 and is adopted
In collector, while playing swollen first closure unit 4, second closure unit 5 flexible blockage medium 24 can be prevented to pass through the second perforate
31 enter in drilling 2.
As shown in figure 9, communicating pipe is a round pipe road, both ends set external screw thread.
Second closure unit 5 quantity is 1, as shown in Figure 10, mainly by closure capsule 27, the second tubular configured joint 26
With the composition of the 4th switch 38.The left end of second tubular configured joint 26 is threaded with side leakage valve 25.
The second closure unit 5 is formed and sealed by the first closure unit 4 and 2 inwalls of drilling of side leakage valve 25 and afterbody
Cavity 6.
As shown in figure 11, the side leakage valve 25 is mainly by a ball of second spring 35, two of basal body pipe 33, two
34th, two the 3rd perforates 36 and two adjusting nuts 37 form.The second spring 35 is located in the 3rd perforate 36 respectively, described
Adjusting nut 37 is located at outside second spring 35, and the pretightning force of second spring 35 is can adjust by rotating adjusting nut 37, to adjust
Save the Opening pressure of ball 34.The flexible blockage medium 24 is entered in sealing cavity 6 by side leakage valve 25, not only salable
Drilling 2, and further sealing function is played to 2 surrounding rock body cracks of drilling.
Rock body quality of mine drilling multisection type gas pumping method, concrete operation step：
1) mash gas pumping drilling 2 is beaten：Successively constructed into top plate or bottom plate coal and rock 1 in tunnel set angle with rig 12
The coal seam in extraction region is specified in the drilling 2 of degree to reaching；
2) test probe is installed：Debris in cleaning drilling 2, installation multistage closure extraction system, that is, be sequentially connected conehead
3rd, the first closure unit 4, collection tube 9, second block unit 5, communicating pipe 8 etc., and the first closure of test probe bottom is single
Member 4 is connected with drilling rod 10, is pushed the test probe installed to specified extraction region using rig 12.
3) closing drilling 2：After probe header to be measured reaches designated area, supply operating desk 13 and drilling rod are connected using flexible pipe 11
10, the flexible blockage medium 24 of setting pressure is provided into test probe.First, the first switch of supply operating desk 13 is opened
14, flexible blockage medium 24 enters the first closure He of unit 4 by communicating pipe 8 and collection tube 9 via the corresponding 4th switch 38
In second closure unit 5, swollen closure capsule 27 is played, forms sealing cavity 6 and collection cavity 7 respectively, continues to increase flexible blockage
The pressure of medium 24, side leakage valve 25 are opened, and flexible blockage medium 24 enters in sealing cavity 6 via the 3rd perforate 36, empty to sealing
Chamber 6 is filled, and further fills the surrounding rock body crack of sealing cavity 6, now, the first closure unit of test probe bottom
4th, the second closure unit 5 and sealing cavity 6 form triple borehole sealings, and the registration of flowmeter 16 on operating desk 13 to be supplied is stable
Afterwards, first switch 14 is closed, opens second switch 17, the flexible blockage medium 24 in communicating pipe 8 and collection tube 9 is removed, makes pipe
Kept clear inside road.
4) pressure test：After closure drilling 2, do pressure test and closure 2 effects of drilling are tested, if closure is bored
Hole 2 is unqualified, then needs to block drilling 2 again；
5) Gas explosion burns are determined：After pressure test, Gas explosion burns measure is carried out, i.e. operating desk 18 is collected in connection, is beaten
Drive the 3rd switch 19, methane gas is entered in collection tube 9 by the second perforate 31 of collection tube 9, communicating pipe 8 grade enter to collect and grasp
Make platform 18, after gas pressure table 20 is stable, read the registration of gas pressure table 20, and compared with the reading of electronic pressure gage 21,
In the case where the two numerical value is roughly the same, the average value of the two numerical value is taken, as shows the number of gas pressure in collection cavity 7
Value, it will finally collect to the methane gas in collecting tank 22 and carry out analysis.
The part do not addressed in the present invention uses or used for reference prior art and can be achieved.
The preferred embodiment of the application is the foregoing is only, is not limited to the application, for the skill of this area
For art personnel, the application can have various modifications and variations.It is all within spirit herein and principle, made any repair
Change, equivalent substitution, improvement etc., should be included within the protection domain of the application.
Claims (10)
- The multisection type gas pumping method 1. rock body quality of mine drills, it is characterised in that using a kind of rock body quality of mine drilling multisection type watt This extraction test probe, the test probe include：At least three first closure units, two of which first blocks unit and is respectively arranged on both ends, and the first closure of head end is single Member is connected with conehead, and middle part first is blocked between the two neighboring first closure unit between unit and the closure unit of head end first Connected by collection tube, collection tube side wall is provided with several the second perforates for carrying one-way seals；Second closure unit, blocked located at afterbody first between unit and middle part first block unit, and the second closure unit with Afterbody first sets communicating pipe between blocking unit, and the second closure unit side sets side leakage valve, for blocking the envelope of afterbody first Stifled drilling and surrounding rock body crack between unit and side leakage valve.
- The multisection type gas pumping method 2. rock body quality of mine according to claim 1 drills, it is characterised in that first envelope Stifled unit includes the first tubular configured joint, sets elastic closeouts outside the first tubular configured joint, is provided with the first tubular configured joint side wall 4th switch, closure medium are opened the 4th switch by the first tubular configured joint and entered between the first tubular configured joint and elastic closeouts Space, elastic closeouts, which swell, plays plugging action.
- The multisection type gas pumping method 3. rock body quality of mine according to claim 2 drills, it is characterised in that the described 4th opens It is in T-shaped block that pass, which includes longitudinal cross-section, is set in the middle part of block through first tubular configured joint, and pass through ear after passing through While being cased with the first spring, support is also set up between block and the first tubular configured joint, support is fixed and supportted with the first tubular configured joint Frame side wall is provided with the first perforate.
- The multisection type gas pumping method 4. rock body quality of mine according to claim 1 drills, it is characterised in that second envelope Stifled unit includes the second tubular configured joint, sets elastic closeouts outside the second tubular configured joint, is provided with the second tubular configured joint side wall 4th switch, closure medium are opened the 4th switch by the second tubular configured joint and entered between the second tubular configured joint and elastic closeouts Space, elastic closeouts, which swell, plays plugging action.
- The multisection type gas pumping method 5. rock body quality of mine according to claim 1 drills, it is characterised in that the side leakage valve Including basal body pipe, at least two are provided with the described second closure unit fastening, basal body pipe opposite side ring inside basal body pipe side 3rd perforate, the 3rd apertured end set adjusting nut, and adjusting nut is contacted by second spring with ball, and ball is located at At the ladder section of 3rd perforate.
- The multisection type gas pumping method 6. rock body quality of mine according to claim 5 drills, it is characterised in that the described 3rd opens The perforates of Kong Yu tetra- communicate, and block and enter the 4th perforate by the 3rd perforate after medium enters in basal body pipe, hence into drilling It is interior.
- The multisection type gas pumping method 7. rock body quality of mine drills, it is characterised in that taken out using rock body quality of mine drilling multisection type gas Extraction system, the extraction system include：Rock body quality of mine drilling multisection type gas pumping test probe according to any one of claim 1-6；Propulsive mechanism, block unit with the afterbody first of test probe and be connected；Operating mechanism is supplied, blocking unit with propulsive mechanism or afterbody first is detachably connected with into test probe and drilling The flexible blockage medium of setting pressure is provided.
- The multisection type gas pumping method 8. rock body quality of mine according to claim 7 drills, it is characterised in that the extraction system System also includes measuring means, and measuring means includes the collection for blocking unit or the propulsive mechanism with afterbody first and being detachably connected Tank；Further, electronic pressure gage and gas pressure are set in the pipeline that collecting tank is connected with the closure unit of afterbody first Table.
- The multisection type gas pumping method 9. rock body quality of mine according to claim 7 drills, it is characterised in that specific steps are such as Under：1) mash gas pumping drilling is beaten：In tunnel mash gas pumping drilling is beaten into top plate or bottom plate coal and rock；2) test probe is installed：Test probe is installed in tunnel, and test probe is sent to setting regions in drilling；3) closing drilling：Unit is blocked by afterbody first to block to communicating pipe, the second closure unit, collection tube, middle part first Unit and head end first block feeding closure medium in unit, and the first closure unit and the second closure unit swell what sealing drilled Segment section；Continue increase closure pressure medium, closure medium is further injected into drilling by side leakage valve；4) Gas explosion burns are determined：Pipe to be collected is with after closure medium flow field sky in communicating pipe, blocking unit by afterbody first and passing through pipe Road is connected with collecting tank, and after setting time, analysis is carried out to methane gas in collecting tank.
- The multisection type gas pumping method 10. rock body quality of mine according to claim 9 drills, it is characterised in that in the step It is rapid 3) after the completion of, to the drilling that finishes of closure, pressure test need to be carried out.
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Denomination of invention: Multi section gas drainage method of mine rock drilling Effective date of registration: 20211202 Granted publication date: 20190416 Pledgee: China Construction Bank Corporation Linyi Luozhuang sub branch Pledgor: LINYI MINING GROUP Co.,Ltd. Registration number: Y2021980013812 |
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