CN108253849A - Coal petrography explosion pre-splitting method and device based on liquid explosives envelope note detonation in deep hole - Google Patents
Coal petrography explosion pre-splitting method and device based on liquid explosives envelope note detonation in deep hole Download PDFInfo
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- CN108253849A CN108253849A CN201810219683.8A CN201810219683A CN108253849A CN 108253849 A CN108253849 A CN 108253849A CN 201810219683 A CN201810219683 A CN 201810219683A CN 108253849 A CN108253849 A CN 108253849A
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- liquid
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- drilling
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
- F42D1/08—Tamping methods; Methods for loading boreholes with explosives; Apparatus therefor
- F42D1/10—Feeding explosives in granular or slurry form; Feeding explosives by pneumatic or hydraulic pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
- F42D3/04—Particular applications of blasting techniques for rock blasting
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a kind of coal petrography explosion pre-splitting methods based on liquid explosives envelope note detonation in deep hole, by setting deep hole into coal and rock, and initiating equipment is launched in drilling in advance, then sealing of hole operation is carried out using the hole packer with fluid injection and degassing function, after the condensation of sealing of hole slurries, liquid explosives are pumped into hole by the way of hydraulic pumping, in aperture, exhaust pipe has liquid to close exhaust pipe shut-off valve when persistently flowing out, stop liquid pumpdown, close liquid injection pipe aperture shut-off valve, and topping-up pump woven hose is pulled away from liquid injection pipe orifice position, carry out line detonation operation.Compared with ordinary solid explosive in deep hole, liquid explosives detonation cut off diameter is small, conveying is facilitated using pumping mode, powder charge is not influenced by drilling collapse hole, it can be to avoid the generation miss-fired, engineering explosion is with small vibration, has the static rock breaking efficiency to explode under super moving load condition, is widely used in the conditions such as the presplitting, anti-reflection, release and erosion control of coal petrography.
Description
Technical field
The present invention relates to a kind of coal petrography explosion pre-splitting method and devices, especially a kind of stress available for high stress country rock
Transfer and release, the increasing of fine and close coal rock layer split with it is anti-reflection, the presplitting caving of tight roof and the decompression of Gas-bearing Coal Seams are anti-reflection
With the coal petrography explosion pre-splitting method and device based on liquid explosives envelope note detonation in deep hole of the conditions such as extinction.
Background technology
Coal resources in China rich reserves, distributed more widely, complex geologic conditions.Since a large amount of of coal resources return a few years ago
It adopts, coal mining is gradually carried out to deep.The a series of complex work that deep coal mining faces high-ground stress, hard coal petrography causes
During Cheng Wenti coal mine deep hole bursting works, there are following three technical barriers for the conventional charge blasting technique used at present：
The problem first, deep hole is drilled.With the lengthening of drilling depth, when especially coal seam is worn in drilling, drill while drilling rod is extracted
Collapse hole therewith, drilling are difficult to be molded；Second is that powder charge problem.With the increase of drillable length, explosive payload increases in hole, deep hole dress
Medicine resistance significantly improves, and with the increase at the drilling elevation angle, and the difficulty such as fixation, push of powder stick are larger in hole, especially when encountering
Drill collapse hole situation, and deep hole explosive is almost difficult to realize；Third, deep hole blasting is miss-fired, the frequency is high, and miso-fire processing is difficult.It is drilled
Channel effect influences, and powder stick propagation of explosion continuous over long distances is limited, and the frequency of miss-firing significantly increases, and since quick-fried section of drilling destruction is tight
Weight, the processing of deep hole unexploded cartridge are extremely difficult.
Invention content
The technical problems to be solved by the invention are to overcome prior art defect, provide a kind of for coal petrography high stress turn
Shifting, country rock release, hard coal petrography fracturing and the engineering specifications such as anti-reflection, can improve that explosion power utilization rate, to reduce deep hole explosive difficult
Degree ensures the successional coal petrography explosion pre-splitting method based on liquid explosives envelope note detonation in deep hole of explosive initiation.
In order to solve the above technical problem, the present invention provides based in deep hole liquid explosives envelope note detonation coal petrography explosion
Pre-splitting method is ignited four big steps including blasthole laying, injection hole sealing, liquid explosives pumping and line, is as follows：
1）Blasthole is laid：For specific coal petrography occurrence condition arrange drilling parameter, Reasonable Arrangement blasthole, including hole depth, pitch of holes,
Layer the position ,/parameters such as elevation angle degree and aperture of inclining, and bore operation is carried out using high-power drilling machine, it is stringent that drilling machine is controlled to drill essence
Degree；
2）Injection hole sealing：After blasthole is laid, initiating equipment is installed on away from 1/3~1/2 position of aperture；Blasthole sealing of hole is preferred
Based on the modified hole packer of a two stifled note principles, fluid injection and exhaust pipe are carried；Hole packer collection injection hole sealing, liquid explosives pumping
With air discharge function in hole in one；The present invention is filled using the hole packer that will carry liquid injection pipe, exhaust pipe and Grouting Pipe
Enter and emptying sealing of hole is carried out in drilling hole；Then exhaust pipe is goed deep into drilling hole bottom；Grouting Pipe with grouting pump station is connect, opens note
Stock pump station carries out hole-sealing grouting operation；
3）Liquid explosives pump：After injection hole sealing grout cures reach some strength, fluid injection pumping plant and liquid injection pipe are connected, the row of opening
The valve of tracheae and liquid injection pipe opens fluid injection pumping plant and carries out liquid explosives pumpdown, liquid, exhaust pipe are filled in hole hole to be drilled
When thering is the liquid persistently to flow out, exhaust valve is closed；It is then shut off the valve of topping-up pump and liquid injection pipe, and by liquid injection pipe from drilling
Orifice position pulls away；
4）Line is ignited：Injection finishes in hole, connects initiating equipment, ignites priming device after personnel remove safety place.
Preferably, to reduce liquid frictional impact, ensureing bursting work safety, the preferred low energy of liquid explosives, low sensitivity
Liquid explosives, based on nitroparaffin hydrocarbon based liquids explosive, also optional nitroglycerine base liquid explosives, water base thickening liquid explosives
Deng.
Preferably, the step 1）Middle blasthole cloth setting parameter：Since drillable length is big, using large-diameter borehole explosion as
Preferably, bore diameter is generally in 50~100mm or so, conducive to the massive hydraulic fracture of hard coal petrography, release and anti-reflection etc..
Preferably, in step 2）In, sealed borehole length is typically no less than the 1/3 of drillable length.
Preferably, the step 2）In detonation and hole sealing device：Priming device in liquid explosives hole is generally with thunder
Based on the combination of pipe or primacord and detonator, preferred electromagnetic detonators priming device under the conditions of superdeep holes.
Preferably, the step 3）The pressure-bearing of middle liquid explosives：To overcome leak-off of the hole wall country rock to liquid explosives, protect
Continuous before card hole inner liquid medicine detonation, liquid explosives sealing of hole pressure-bearing amount is generally kept in 0.5~1.5MPa.
Preferably, the step 3）In, the preferred hydraulic plunger type pumping mode of deep hole liquid explosives.
The present invention also provides a kind of coal petrography explosion presplitting device based on liquid explosives envelope note detonation in deep hole, including detonation
Equipment device, hole packer, grouting pump station, fluid injection pumping plant；Hole packer is equipped with liquid injection pipe, exhaust pipe and Grouting Pipe；Liquid injection pipe with
Fluid injection pumping plant connects, and Grouting Pipe is connect with grouting pump station；On liquid injection pipe, exhaust pipe, Grouting Pipe, grouting pump station and fluid injection pumping plant
Equipped with valve.
Beneficial effects of the present invention：1st, it is low to drilling via formations specification requirement.Liquid explosives detonation cut off diameter is small, can be 2
It is adjustable in the range of~10mm, it ensure that the successively initiated of liquid explosives in hole, do not influenced substantially by drilling deformation, collapse hole；2nd, it solves
It has determined deep hole explosive problem.Liquid explosives can be realized and continuously be transported over long distances, powder charge is not bored equally by the way of pumping
Bore deformation, collapse hole influence, and effectively overcome the difficulty under the conditions of solid charge, are that the drill eye blasting under superdeep holes charging condition is big
Scale popularization and application provide possibility；3rd, the problem of miss-firing often occurred in solid charge is overcome.Pumping liquid explosives in deep hole
The solid-liquid unity couping of liquid and hole wall country rock is realized, eliminates the void effect in solid charge, explosive is avoided and miss-fires difficulty
Topic；4th, blasting vibration is small.Liquid explosives are generally under the jurisdiction of low energy, low sensitivity explosive scope, and explosive initiation environment is liquid environment,
Blasting vibration coverage is small, and blasting environment is relatively preferable；Liquid explosives are conveyed by pulsometer, and mobility is preferable, and explosion
Critical point is relatively low, is no longer influenced by drilling collapse hole, deep hole explosive difficulty is substantially reduced.Due to the continuity Characteristics of liquid explosives,
The channel effect that explodes in hole is eliminated, and ensure that the continuous of explosive initiation, avoids powder stick processing problem of miss-firing in hole.In hole
Explosive initiation moment is oriented to each other between blast hole, conducive to the advantage extension in the main crack of explosion is realized, is reached explosion energy and is concentrated profit
With purpose, coal petrography blasting environment is also obviously improved；5th, it using large aperture superdeep holes liquid explosives blasting technique, realizes
Disposable a wide range of whole presplit blasting purpose, engineering explosion is with small vibration, has the static broken rock effect exploded under super moving load condition
Fruit.
Description of the drawings
Fig. 1 is the structure diagram of apparatus of the present invention；
In figure：1- drills, 2- primacords, 3- liquid injection pipes, 4- exhaust pipes, 5- hole packers, 6- Grouting Pipes, 7- grouting pump stations, 8- notes
Pump station.
Specific embodiment
By taking the liquid explosives blast cracking in hard coal seam deep hole is anti-reflection as an example, carry out based on liquid explosives envelope note in deep hole
The anti-reflection bursting work of hard coal seam fracturing of detonation.
As shown in Figure 1, the coal petrography explosion presplitting device provided by the invention based on liquid explosives envelope note detonation in deep hole, packet
Include initiating equipment, hole packer 5, grouting pump station 7, fluid injection pumping plant 8；Hole packer 5 is equipped with liquid injection pipe 3, exhaust pipe 4 and Grouting Pipe 6；
Liquid injection pipe 3 is connect with fluid injection pumping plant 7, and Grouting Pipe 6 is connect with grouting pump station 8；Liquid injection pipe 3, exhaust pipe 4, Grouting Pipe 6, grouting pump
It stands and is equipped with valve on 7 and fluid injection pumping plant 8；Initiating equipment uses primacord 2 and detonator.
Coal petrography explosion pre-splitting method provided by the invention based on liquid explosives envelope note detonation in deep hole, using above-mentioned dress
It puts, ignites four big steps including blasthole laying, injection hole sealing, liquid explosives pumping and line, be as follows：
Construction depth is the drilling 1 of 50m first in hard and superhigh seam, and aperture 60mm, drilling diameter of drilling is 63mm, and drilling 1 is hung down
Straight tunnel trend, 13 ° of the elevation angle, the spacing of adjacent drilling 1 are set as 1.5m；
Secondly, it is sent into using the plastics elongate strip binding primacord 2 with certain toughness away from drilling 1 aperture about 18m, then by band
The hole packer 5 for having liquid injection pipe 3, exhaust pipe 4 and Grouting Pipe 6 fill in drilling 1 hole in, 5 end of hole packer far from aperture 12m, leading portion away from
Aperture 1m, exhaust pipe 4 go deep into bottom hole, and liquid injection pipe 3 stretches out 5 feather edge 100mm of hole packer.After hole packer 5 is installed, by sealing of hole
Grouting Pipe 6 in device 5 is connected to grouting pump station 7, opens pumping plant 7 and carries out hole-sealing grouting operation；
Then, it treats that hole-sealing grouting condensation of materials reaches some strength, liquid injection pipe 3 is connected to fluid injection pumping plant 8, opens exhaust pipe 4
With 3 valve of liquid injection pipe, liquid explosives topping-up pump 8 is opened；When 4 valve location of exhaust pipe has lasting liquid medical abortion to go out, exhaust is closed
4 valve of pipe, liquid injection pipe 3 continues fluid injection, when fluid pressure reaches 1.0MPa in hole, closes 3 valve of topping-up pump 8 and liquid injection pipe,
Liquid injection pipe 3 is pulled away from 1 orifice position of drilling；
Finally, detonator is bundled in 2 tail end of primacord, fills in 1 hole of drilling and use stemming packing, carried out line detonation and prepare to make
Industry after personnel evacuate to safety place in tunnel, ignites liquid explosives in hole.
It should be pointed out that for those skilled in the art, without departing from the principle of the present invention,
Several improvements and modifications can also be made, these improvements and modifications also should be regarded as protection scope of the present invention.In the present embodiment not
The available prior art of specific each component part is realized.
Claims (8)
1. a kind of coal petrography explosion pre-splitting method based on liquid explosives envelope note detonation in deep hole, it is characterised in that：Including following step
Suddenly：
1）Blasthole is laid：Drilling parameter is arranged for specific coal petrography occurrence condition, determines that hole depth, spacing, layer position, incline/elevation angle degree
And aperture parameters, it is punched using high-power drilling machine sequence, forms drilling（1）；
2）Injection hole sealing：Blasthole laying finishes, and initiating equipment is installed on away from drilling（1）Then 1/3~1/2 position of aperture will
With liquid injection pipe（3）, exhaust pipe（4）And Grouting Pipe（6）Hole packer（5）It is packed into drilling（1）In hole, by exhaust pipe（4）Deeply
Drilling（1）Bottom hole；By Grouting Pipe（6）With grouting pump station（7）Grouting pump station is opened in connection（7）Carry out hole-sealing grouting operation；
3）Liquid explosives pump：After injection hole sealing grout cures, fluid injection pumping plant is connected（8）And liquid injection pipe（3）, open exhaust pipe
（4）And liquid injection pipe（3）Valve, open fluid injection pumping plant（8）Liquid explosives pumpdown is carried out, it is hole to be drilled（1）Medicine is filled in hole
Liquid, exhaust pipe（4）When thering is the liquid persistently to flow out, exhaust pipe is closed（4）Valve is then shut off topping-up pump（8）And liquid injection pipe（3）'s
Valve, by liquid injection pipe（3）From drilling（1）Orifice position pulls away；
4）Line is ignited：Initiating equipment is connected, carries out bursting work.
2. the coal petrography explosion pre-splitting method according to claim 1 based on liquid explosives envelope note detonation in deep hole, feature
It is：The liquid explosives use nitroparaffins class I liquid I explosive, nitroglycerine base liquid explosives or water base thickening liquid explosives.
3. the coal petrography explosion pre-splitting method according to claim 1 based on liquid explosives envelope note detonation in deep hole, feature：
In step 1）In, drilling（1）A diameter of 50~100mm.
4. the coal petrography explosion pre-splitting method according to claim 1 based on liquid explosives envelope note detonation in deep hole, feature：
In step 2）In, sealed borehole length is not less than drilling（1）The 1/3 of length.
5. the coal petrography explosion pre-splitting method according to claim 1 based on liquid explosives envelope note detonation in deep hole, feature
It is：In step 2）In, the initiating equipment is using detonator or electromagnetic detonators or primacord（2）And detonator.
6. the coal petrography explosion pre-splitting method according to claim 1 based on liquid explosives envelope note detonation in deep hole, feature
It is：In step 3）In, close exhaust pipe（4）After valve, as 0.5~1.5MPa of liquid explosives pressure-bearing in hole, note is turned off
Liquid pump（8）And liquid injection pipe（3）Valve.
7. the coal petrography explosion pre-splitting method according to claim 1 based on liquid explosives envelope note detonation in deep hole, feature
It is：In step 3）In, the liquid explosives use hydraulic plunger type pumping mode.
8. a kind of device using coal petrography explosion pre-splitting method described in claim 1, it is characterised in that：It is filled including initiating equipment
It puts, hole packer（5）, grouting pump station（7）, fluid injection pumping plant（8）；The hole packer（5）It is equipped with liquid injection pipe（3）, exhaust pipe（4）And
Grouting Pipe（6）；The liquid injection pipe（3）With fluid injection pumping plant（8）Connection, Grouting Pipe（6）With grouting pump station（7）Connection；The fluid injection
Pipe（3）, exhaust pipe（4）, Grouting Pipe（6）, grouting pump station（7）And fluid injection pumping plant（8）On be equipped with valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810219683.8A CN108253849A (en) | 2018-03-16 | 2018-03-16 | Coal petrography explosion pre-splitting method and device based on liquid explosives envelope note detonation in deep hole |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810219683.8A CN108253849A (en) | 2018-03-16 | 2018-03-16 | Coal petrography explosion pre-splitting method and device based on liquid explosives envelope note detonation in deep hole |
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| Publication Number | Publication Date |
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| CN108253849A true CN108253849A (en) | 2018-07-06 |
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|---|---|---|---|
| CN201810219683.8A Pending CN108253849A (en) | 2018-03-16 | 2018-03-16 | Coal petrography explosion pre-splitting method and device based on liquid explosives envelope note detonation in deep hole |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110530224A (en) * | 2019-09-04 | 2019-12-03 | 江苏中控能源科技有限公司 | One kind being used for deep hole high voltage transient gas broken rock three-stage hole-sealing technology method |
| CN111536844A (en) * | 2020-05-27 | 2020-08-14 | 李天北 | Quick blasting drilling device |
| CN111706390A (en) * | 2020-04-14 | 2020-09-25 | 西安闪光能源科技有限公司 | Method for eliminating rock burst |
| CN114152160A (en) * | 2021-12-16 | 2022-03-08 | 中国矿业大学 | Intra-hole directional stone breaking device adopting high-voltage electric pulses and construction method thereof |
| CN114440718A (en) * | 2022-01-06 | 2022-05-06 | 淮北矿业股份有限公司 | Liquid explosive-based deep hole blasting residual explosion treatment method |
| CN115355779A (en) * | 2022-08-15 | 2022-11-18 | 陕西永明煤矿有限公司 | Air intake tunnel pre-splitting construction process |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204663509U (en) * | 2015-05-26 | 2015-09-23 | 河南理工大学 | Anti-reflection system is shaken in carbon dioxide coal seam |
| CN106121644A (en) * | 2016-06-17 | 2016-11-16 | 中国矿业大学 | Water-filling pressure-bearing unloading pressure by blasting based on drilling in coal and rock plane crosslinking cellular structure and supporting reinforcement |
| CN106761852A (en) * | 2017-03-24 | 2017-05-31 | 中国矿业大学 | Wide area coal petrography deep hole pressure-bearing microexplosion grouting water blocking method under water |
-
2018
- 2018-03-16 CN CN201810219683.8A patent/CN108253849A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204663509U (en) * | 2015-05-26 | 2015-09-23 | 河南理工大学 | Anti-reflection system is shaken in carbon dioxide coal seam |
| CN106121644A (en) * | 2016-06-17 | 2016-11-16 | 中国矿业大学 | Water-filling pressure-bearing unloading pressure by blasting based on drilling in coal and rock plane crosslinking cellular structure and supporting reinforcement |
| CN106761852A (en) * | 2017-03-24 | 2017-05-31 | 中国矿业大学 | Wide area coal petrography deep hole pressure-bearing microexplosion grouting water blocking method under water |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110530224A (en) * | 2019-09-04 | 2019-12-03 | 江苏中控能源科技有限公司 | One kind being used for deep hole high voltage transient gas broken rock three-stage hole-sealing technology method |
| CN110530224B (en) * | 2019-09-04 | 2024-01-23 | 江苏中控能源科技有限公司 | Three-section type hole sealing process method for deep hole transient high-pressure gas rock breaking |
| CN111706390A (en) * | 2020-04-14 | 2020-09-25 | 西安闪光能源科技有限公司 | Method for eliminating rock burst |
| CN111706390B (en) * | 2020-04-14 | 2022-03-11 | 西安闪光能源科技有限公司 | Method for eliminating rock burst |
| CN111536844A (en) * | 2020-05-27 | 2020-08-14 | 李天北 | Quick blasting drilling device |
| CN114152160A (en) * | 2021-12-16 | 2022-03-08 | 中国矿业大学 | Intra-hole directional stone breaking device adopting high-voltage electric pulses and construction method thereof |
| CN114440718A (en) * | 2022-01-06 | 2022-05-06 | 淮北矿业股份有限公司 | Liquid explosive-based deep hole blasting residual explosion treatment method |
| CN114440718B (en) * | 2022-01-06 | 2024-04-19 | 淮北矿业股份有限公司 | Deep hole explosion residual explosion treatment method based on liquid explosive |
| CN115355779A (en) * | 2022-08-15 | 2022-11-18 | 陕西永明煤矿有限公司 | Air intake tunnel pre-splitting construction process |
| CN115355779B (en) * | 2022-08-15 | 2024-02-09 | 陕西永明煤矿有限公司 | Pre-splitting construction process for air inlet lane |
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Application publication date: 20180706 |