CN105971517A - Underground progressive gas pre-extraction and directional hole drilling system and method for broken and soft coal seam - Google Patents
Underground progressive gas pre-extraction and directional hole drilling system and method for broken and soft coal seam Download PDFInfo
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- CN105971517A CN105971517A CN201610465429.7A CN201610465429A CN105971517A CN 105971517 A CN105971517 A CN 105971517A CN 201610465429 A CN201610465429 A CN 201610465429A CN 105971517 A CN105971517 A CN 105971517A
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- hole
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/003—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings with electrically conducting or insulating means
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/06—Arrangements for treating drilling fluids outside the borehole
- E21B21/07—Arrangements for treating drilling fluids outside the borehole for treating dust-laden gaseous fluids
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/14—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor using liquids and gases, e.g. foams
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/02—Determining slope or direction
- E21B47/022—Determining slope or direction of the borehole, e.g. using geomagnetism
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
- E21B47/13—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling by electromagnetic energy, e.g. radio frequency
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
Abstract
The invention relates to an underground progressive gas pre-extraction and directional hole drilling system and method for a broken and soft coal seam. An orifice bubble filling system is utilized to provide a continuous bubble flow for a drill hole to drive hole bottom grooving air screw motor to perform rapid drilling, and scouring to the hole wall of the broken and soft coal seam is reduced. A triquetrum auger stem is used for strengthening residue discharge. An orifice bubble-eliminating extraction system is utilized to eliminate bubbles, remove rock cuttings and perform gas extraction, and construction safety is guaranteed. A dual-drive compound directional drilling technology is combined to regulate and control a drilling trajectory and ensure that the drill hole extends along the designed trajectory and penetrates through and covers an unmined working face and a roadway to be excavated. The hole forming depth, the hole forming precision, hole forming efficiency and hole forming rate of the broken and soft coal seam with the Platts hardness coefficient f greater than or equal to 0.5 but smaller than or equal to 0.8 are wholly improved, the formed hole is used for progressive gas pre-extraction in a broken and soft coal seam zone, and a standard-reaching period of the working face of the broken and soft coal seam and coal roadway driving gas extraction is shortened.
Description
Technical field
The present invention relates to a kind of drilling system and method, belong to field of coal mining, be specifically related to one
Broken soft seam down-hole laddering gas pre-drainage directional hole drilling system and method.
Background technology
Gas is the important accident potential in safety of coal mines high-efficiency mining, for guaranteeing later stage coal mining safety,
Coal-bed gas must carry out pre-extraction in advance, gas pumping efficiency has a strong impact on seam mining efficiency.
The pre-extraction of coal-bed gas includes two importances: one is that the gas screening coal roadway tunneling in advance is taken out
Adopt problem, it is ensured that coal roadway tunneling safety；Two is to treat gas advanced extraction problem in mining face, it is ensured that
Work surface coal seam back production safety.Middle hard coal seam gas pumping technology has been carried out laddering gas and takes out
Adopting, i.e. utilize directional hole before tunnelling and work surface trap, advanced extraction is treated mining face and treats
Coal-bed gas in pick tunnel repair district, the gas pre-drainage cycle only needs half a year～about 1 year, it is achieved dig, adopt,
Take out alternately.
Owing to broken soft seam drilling process easily occurring abnormal phenomena in the holes such as spray orifice, collapse hole, bit freezing,
Creep into difficulty, it is adaptable to the Technology of Directional Drilling of middle hard coal seam and equipment are not suitable for the construction of broken soft seam,
And the broken existing construction method of soft seam and the drilling depth equipped are shallower, the average penetration degree of depth≤
150m, much smaller than treating mining face and tunnel repair sector width to be dug, it is impossible to meet laddering extraction need
Want.Therefore the way used at present is: for tunnel to be dug gas pumping problem, typically uses and waits to dig
The Di Chou lane of coal road base plate bottom combines conventional layer-through drilling and carries out that gas is pre-to be taken out, but its construction is bored
Hole number is many, and quantities is big, and area coverage is little, and production cost is high；For treating that mining face gas is taken out
Adopt problem, mainly complete in tunnelling to be dug, it is achieved after work surface trap, from treating mining face
Both sides have been dug coal road and have been thought that work surface construction carries out gas pumping to perforation, and construction drill quantity is many, and must
The mash gas pumping drilling that could must start to construct after both sides coal roadway tunneling completes carries out extraction, gas pumping
Reaching standard time is than laddering extraction to the youthful and the elderly more than 1 times.
To this end, the designer of the present invention is in view of drawbacks described above, by concentrating on studies and design, comprehensively
Long-term experience and the achievement being engaged in related industry for many years, takes out for current underground coal mine broken soft seam gas
The deficiency that mining method and construction technology equipment exist, it is laddering that research design goes out a kind of broken soft seam down-hole
Gas pre-drainage directional hole drilling method and equipment, to overcome drawbacks described above.
Summary of the invention
The present invention mainly solves that the drilling project amount existing for prior art is big, construction period and gas
The technical problems such as extraction reaching standard time length, it is provided that the laddering gas pre-drainage in a kind of broken soft seam down-hole is fixed
System and method is entered to hole drill.This system and method improves Polodyakonov coefficient coefficient 0.5≤f≤0.8
The depth of pore forming of broken soft seam, pore-forming accuracy, pore-forming efficiency with become porosity, pore-forming be used for broken soft seam
The laddering gas pre-drainage in region is adopted, and decreases broken soft seam work surface and coal roadway tunneling gas pumping is up to standard
Cycle.
The above-mentioned technical problem of the present invention is mainly addressed by following technical proposals:
In order to solve the problems referred to above, according to an aspect of the invention, it is provided a kind of broken soft seam well
Under laddering gas pre-drainage directional hole drilling system, including: hole interior orientation drilling tool string, aperture foam fill
Injection system, aperture froth breaking extraction system；Wherein:
Described hole interior orientation bores protrusion-dispelling lead bit, the cutting air screw that string tool includes being sequentially connected with
Motor, without magnetic variation wire connection hands, logical cable without magnetic insulation pipe nipple, cutting without magnetic instrument outer tube, Rhizoma Sparganii cutting
Drilling rod, rotation blower；Wherein said protrusion-dispelling lead bit be internally provided with only can forward by gas,
The one-way check mechanism of water and solid particle；Cutting air screw motor is by stable foam stream or air stream
Driving, its stator material is nonmagnetic steel, and continuous helical ash pit deep for 3mm is washed in stator exterior milling,
Start pressure≤0.6Mpa, working flow≤10m3/ min, length≤4m；Cutting is without magnetic instrument outer tube
Hollow structure, outside milling is used to wash continuous helical ash pit deep for 3mm；
Described aperture foam perfusion system includes: the Mine Air Compressor that is sequentially connected with, sparger,
Mining hydraulic pump and concentrated tank, described sparger is connected with rotating blower；
Described aperture froth breaking extraction system includes: the aperture hole sealing tube, the aperture water conservancy diversion that are sequentially connected with fill
Put, dedusting defoaming device, stop valve, methane gas extraction pipeline；Wherein, described dedusting defoaming device with
Mine Air Compressor and froth breaking flow container connect.
Optimize, above-mentioned one broken soft seam down-hole laddering gas pre-drainage directional hole drilling system,
Also include mining electromagnetic wave wireless while-drilling measuring device, this is mining electromagnetic wave wireless while-drilling measuring device bag
Include: electromagnetic measurement while drilling instrument string, signal-receiving electrode and data collection processor, wherein,
Described electromagnetic measurement while drilling instrument string includes that the inclination measuring short piece being sequentially connected with, battery sleeve, signal are launched
Pipe nipple, blast switch；Described signal-receiving electrode has 2, one be arranged on creep into place stratum in,
One connects with hole interior orientation drilling tool series winding.
Optimize, above-mentioned one broken soft seam down-hole laddering gas pre-drainage directional hole drilling system,
Described logical cable includes exterior insulation assembly and built-in electrical insulation assembly without magnetic insulation pipe nipple；Wherein:
Described exterior insulation assembly includes by the upper metal conducting bar of screwed connection, lower metal conducting bar,
Wherein, the inside and outside wall of interconnective screw thread, shoulder and metal conducting bar is arranged screw thread insulating barrier,
Inner insulating layer and external insulation layer；
Described built-in electrical insulation assembly include by the lower insulating joint of screwed connection, hollow insulating bar and on
Insulating joint；Conduction copper core is led at upper metal after being entered through hollow insulating bar by lower insulating joint end
Limited tension in electric pole step, and turn on upper metal conducting bar；Be provided with in lower insulating joint with
Conduction copper core connects and composes the signal spring of interior signal path.
In order to solve the problems referred to above, according to a further aspect in the invention, it is provided that a kind of broken soft seam well
Under laddering gas pre-drainage directional hole drilling method, comprise the following steps:
Preparation of construction step, is arranged in the close side treating mining face in having dug coal road by drill site；And
And be perpendicular to dig coal road directional hole is set, the tapping point of described directional hole is positioned at drill site；
Orientation opening step, connects aperture foam perfusion system, according to design perforate inclination angle and azimuth
Use protrusion-dispelling lead bit and Rhizoma Sparganii cutting drilling rod rotary drilling the first distance, then carry brill and change reaming
Drill bit reaming and seals to first apart from rear lower man-hole opening hole sealing tube；
Directional drilling step, connects aperture froth breaking extraction system, lower hand-hole interior orientation drilling tool string, will connect
Continuous foam injection hole, drives and lubrication cutting air screw revolution detritus, it is achieved orientation
Creep into；Utilize aperture froth breaking extraction system that the pollution foam containing landwaste is carried out dedusting froth breaking in aperture；
Put forward brill whole hole step, after directional hole reaches projected depth, propose hole interior orientation drilling tool string, connect
Extraction pipeline carries out gas pumping；After gas pumping is up to standard, tunnel coal road to be dug, exploit work to be adopted
Face.
Optimize, above-mentioned one broken soft seam down-hole laddering gas pre-drainage directional hole drilling method,
In described preparation of construction step, the setting of directional hole is particularly as follows: directional hole is positioned at Polodyakonov coefficient coefficient 0.5
In the broken soft seam of≤f≤0.8, upper and lower displacement rises and falls with broken soft seam and fluctuates, and directional hole length >=
Treat mining face width+coal road width to be dug+in advance away from；Obtain and light the directional hole every 3m from perforate
Include design inclination angle, azimuth, left and right displacement and the multiple directional hole trajectory parameters of upper and lower displacement.
Optimize, above-mentioned one broken soft seam down-hole laddering gas pre-drainage directional hole drilling method,
In described directional drilling step, continuous foam produces process and is: Mine Air Compressor carries to sparger
While compressed gas, mining hydraulic pump aspirates foam solution from concentrated tank and is delivered to sparger,
In sparger, compressed gas mixes with foam solution, forms steady and continuous foam.
Optimize, above-mentioned one broken soft seam down-hole laddering gas pre-drainage directional hole drilling method,
In described directional drilling step, drilling hole dust collector defoaming process is: Mine Air Compressor is to dedusting defoaming device
Conveying compressed gas, compressed gas forms negative pressure cavity, by froth breaking in the ejection of dedusting defoaming device jet
While liquid is drawn into dedusting defoaming device from froth breaking flow container, foam will be polluted by aperture guiding device
Being drawn into dedusting defoaming device, lather collapse in dedusting defoaming device, landwaste is with foam separation also
Discharge from dedusting defoaming device bottom；When drilling gas concentration height, open stop valve, after froth breaking
Gas enters methane gas extraction pipeline, it is to avoid drill site gas exceeding limit.
Optimize, above-mentioned one broken soft seam down-hole laddering gas pre-drainage directional hole drilling method,
Also include:
TRAJECTORY CONTROL step, for after round trip creeps into end, uses electromagnetic wave wireless drilling to measure dress
Put carry out DATA REASONING and signal transmission, it is thus achieved that the drilling trajectory parameter of directional hole, by drilling trajectory with
Follow-up drilling trace is adjusted after planned course parameter comparison.
Optimize, above-mentioned one broken soft seam down-hole laddering gas pre-drainage directional hole drilling method,
The detailed process using electromagnetic wave wireless while-drilling measuring device to carry out DATA REASONING and signal transmission is: return
Secondary creep into end after, blast switch monitor Mine Air Compressor close after, start inclination measuring short piece measurement incline
Angle, azimuth and tools for angle are at interior drilling trajectory parameters；It is short that signal launches pipe nipple reception deviational survey
The deviational survey data that joint returns, and by coding rule set in advance, the deviational survey data received are passed through logical
Cable is launched with electromagnetic wave wireless mode continuously without magnetic insulation pipe nipple top rod post and bottom drill string
Go；The electromagnetic wave signal uploaded by two the signal-receiving electrode collections being arranged on aperture also passes to number
According to Acquisition Processor；Signal is demodulated showing by data collection processor by coding rule set in advance
Show；After emitting times reaches set point number value, signal launches pipe nipple and inclination measuring short piece quits work, wind
Compress switch continuation monitoring blast situation of change continuously, waits next data firing order.
Optimize, above-mentioned one broken soft seam down-hole laddering gas pre-drainage directional hole drilling method,
Adjust the method for follow-up drilling trace particularly as follows: when the inclination angle of directional hole drilling trajectory and azimuth with set
Evaluation deviation is respectively less than 3 °, and real brill left and right displacement and upper and lower displacement are respectively less than 1m with design load deviation,
Utilize directional drilling rig revolution Rhizoma Sparganii cutting drilling rod and apply the pressure of the drill to hole interior orientation drilling tool string and carry out multiple
Bench drill enters, and speed of gyration is 30～50r/min；Otherwise directional drilling rig does not turn round Rhizoma Sparganii cutting drilling rod,
Only in hole, drilling tool applies the pressure of the drill and carries out slipping drilling, by directional hole track correct to planned course phase
Symbol.
Therefore, present invention have the advantage that
(1) the complete of broken soft seam down-hole laddering gas pre-drainage directional hole drilling method and equipment is established
Adjusting technique system, utilizes mining electromagnetic wave wireless while-drilling measuring device to carry out the real drilling track that bores in real time
Measure；Aperture foam perfusion system is utilized to provide cutting air spiral shell at the bottom of continuous foam stream drive hole to boring
Bar motor fast drilling, reduces and washes away broken soft seam hole wall；Use Rhizoma Sparganii auger stem reinforced platoon
Slag；Utilizing aperture froth breaking extraction system to eliminate foam, remove landwaste and carry out gas pumping, guarantee is executed
Work safety；
(2) combine Dual Drive to be combined Technology of Directional Drilling and carry out drilling track regulation and control, it is ensured that boring is along setting
Meter track extends through covering and unminds work surface and tunnel to be dug；Improve broken soft seam on the whole
Depth of pore forming, pore-forming accuracy, pore-forming efficiency with become porosity, pore-forming for broken soft seam region laddering
Gas pre-drainage is adopted, and decreases broken soft seam work surface and coal roadway tunneling gas pumping cycle up to standard.
Accompanying drawing explanation
Fig. 1 is the drilling method principle schematic of the present invention；
Fig. 2 be the present invention creep into equipment connection diagram；
Fig. 3 is that logical cable is without magnetic insulation pipe nipple structural representation.
Detailed description of the invention
Below by embodiment, and combine accompanying drawing, technical scheme is made the most concrete
Explanation.
In figure, drill site 1, dig coal road 2, treat mining face 3, directional hole 4, coal road to be dug 5, broken
Soft seam 6, protrusion-dispelling lead bit 7, cutting air screw motor 8, without magnetic variation wire connection hands 9, logical cable
Pipe nipple without magnetic insulation 10, without magnetic variation wire connection hands 9, cutting without magnetic instrument outer tube 11, become silk steel catcher 12,
Rhizoma Sparganii cutting drilling rod 13, rotation blower 14, sparger 15, mining hydraulic pump 16, foam solution
Tank 17, Mine Air Compressor 18, aperture hole sealing tube 19, aperture guiding device 20, dedusting defoaming device
21, froth breaking flow container 22, stop valve 23, methane gas extraction pipeline 24, inclination measuring short piece 25, battery sleeve 26,
Signal launch pipe nipple 27, blast switch 28, signal-receiving electrode 29, data collection processor 30,
Upper metal conducting bar 31, lower metal conducting bar 32, screw thread insulating barrier 33, inner insulating layer 34, outer absolutely
Edge layer 35, lower insulating joint 36, hollow insulating bar 37, upper insulating joint 38, signal spring 39,
Positioning retainer ring 40, conduction copper core 41, signal back-up ring 42, clamp nut 43.
Embodiment:
See Fig. 1, the broken soft seam down-hole laddering gas pre-drainage directional hole drilling method of the present invention, bag
Include following job step:
Step one: drill site 1 is arranged.Drill site 1 is arranged in digs in coal road 2, near treating mining face 3
Side, drill site 1 spacing is 30～50m；
Step 2: directional hole 4 designs.Directional hole 4 is perpendicular to dig coal road 2, and tapping point is positioned at drill site
In 1, hold angle hole spacer segment 5m is arranged in parallel；Directional hole 4 is positioned at Polodyakonov coefficient coefficient 05≤f≤08
Broken soft seam 6 in, upper and lower displacement rises and falls with broken soft seam 6 and fluctuates, directional hole 4 length >=treat
Mining face 3 width+coal road 5 width to be dug+in advance away from；Obtain and light the orientation every 3m from perforate
Directional hole 4 trajectory parameters such as Trajectory Design inclination angle, hole 4, azimuth, left and right displacement and upper and lower displacement.
Step 3: directional hole 4 perforate.Connect aperture foam perfusion system, according to design perforate inclination angle
Use protrusion-dispelling lead bit 7 and Rhizoma Sparganii cutting drilling rod 13 rotary drilling 9m with azimuth, then carry brill more
Changing reaming bit reaming to 9m, lower man-hole opening hole sealing tube 19 also seals, and connects aperture froth breaking extraction system.
Step 4: continuous foam directional drilling.Lower hand-hole interior orientation drilling tool string, by continuous foam through hole
The hollow cavity injection hole of interior orientation drilling tool string, drives and lubrication cutting air screw motor 8
Rotate detritus, it is achieved directional drilling, and carry broken landwaste return aperture；Aperture is utilized in aperture
Froth breaking extraction system carries out dedusting froth breaking to the pollution foam containing landwaste.
Step 5: TRAJECTORY CONTROL.After round trip creeps into end, use electromagnetic wave wireless while-drilling measuring device
Carry out DATA REASONING and signal transmission, it is thus achieved that directional hole 4 is real bore inclination angle, azimuth, left and right displacement and
Upper and lower displacement.When inclination angle and the azimuth of directional hole 4 drilling trajectory are respectively less than 3 ° with design load deviation,
And brill left and right displacement and upper and lower displacement are respectively less than 1m with design load deviation in fact, utilize directional drilling rig to return
Turn Rhizoma Sparganii cutting drilling rod 13 and apply the pressure of the drill to hole interior orientation drilling tool string and carry out compound drilling, speed of gyration
It is 30～50r/min；Otherwise directional drilling rig does not turn round Rhizoma Sparganii cutting drilling rod 13, only bores in hole
Tool applies the pressure of the drill and carries out slipping drilling, corrects directional hole 4 track to being consistent with planned course.
Step 6: carry the whole hole of brill.After directional hole 4 reaches projected depth, hole interior orientation drilling tool string is proposed,
Connect extraction pipeline and carry out gas pumping.
Step 7: after gas pumping is up to standard, tunnels coal road 5 to be dug, and mining face 3 is treated in exploitation.
Step 8: in the coal road to be dug 5 being complete, repeats step one～step 7 realizes laddering
Gas pumping.
Seeing Fig. 2, broken soft seam down-hole laddering gas pre-drainage directional hole creeps into equipment, by hole interior orientation
Drilling tool string, aperture foam perfusion system, aperture froth breaking extraction system and mining electromagnetic wave wireless drilling are surveyed
Amount device composition, wherein:
Hole interior orientation drilling tool string by protrusion-dispelling lead bit 7, cutting air screw motor 8, without magnetic variation wire connection
Hands 9, logical cable without magnetic insulation pipe nipple 10, without magnetic variation wire connection hands 9, cutting without magnetic instrument outer tube 11, change
Silk steel catcher 12, Rhizoma Sparganii cutting drilling rod 13, rotation blower 14 use threaded successively.Wherein
Protrusion-dispelling lead bit 7 is internally provided with one-way check mechanism, and creeping into can with stable foam stream or air stream
Forward passes through；In stopping air feed or hole during Gas Outburst, reversely end, gas and water and solid particle etc.
All cannot be redirected back in drill bit.Cutting air screw motor 8 by stable foam stream or empty air stream drives,
Having oil seal lubricating structure, its stator material is nonmagnetic steel, and the company that 3mm is deep is washed in stator exterior milling
Continuous spiral ash pit, starts pressure≤0.6Mpa, working flow≤10m3/ min, length≤4m.Carve
Groove uses nonmagnetic steel material without magnetic instrument outer tube 11, hollow structure, and deep continuous of 3mm is washed in outside milling
Spiral ash pit, inside is installed with electromagnetic wave while-drilling measurement while-drilling instrument string.
Foam perfusion system in aperture is by sparger 15, mining hydraulic pump 16, concentrated tank 17, mining
Air compressor machine 18 forms, and sparger 15, mining hydraulic pump 16 and concentrated tank 17 are sequentially connected with, ore deposit
Being connected with sparger 15 with air compressor machine 18, sparger 15 is connected with rotating blower 14.Profit
The process producing steady and continuous foam by aperture foam perfusion system is: Mine Air Compressor 18 is to the dress that bubbles
While putting 15 conveying compressed gas, mining hydraulic pump 16 aspirates foam solution also from concentrated tank 17
Being delivered to sparger 15, in sparger 15, compressed gas mixes with foam solution, is formed and stably connects
Continuous foam.
Aperture froth breaking extraction system is by aperture hole sealing tube 19, aperture guiding device 20, dedusting defoaming device
21, froth breaking flow container 22, stop valve 23, methane gas extraction pipeline 24 and Mine Air Compressor 18 form, hole
Mouth hole sealing tube 19, aperture guiding device 20, dedusting defoaming device 21, stop valve 23, gas pumping
Pipeline 24 is sequentially connected with, and dedusting defoaming device 21 is connected with Mine Air Compressor 18 and froth breaking flow container 22.
The aperture froth breaking extraction system is utilized at drilling hole dust collector defoaming process to be: Mine Air Compressor 18 is to dedusting froth breaking
Device 21 carries compressed gas, and it is empty that compressed gas forms negative pressure in the ejection of dedusting defoaming device 21 jet
Chamber, by froth breaking liquid while froth breaking flow container 22 is drawn into dedusting defoaming device 21, steeps pollution
Foam is drawn into dedusting defoaming device 21 by aperture guiding device 20, steeps in dedusting defoaming device 21
Foam ruptures, and landwaste is discharged with foam separation and from dedusting defoaming device 21 bottom；When drilling gas concentration
Gao Shi, opens stop valve 23, and the gas after froth breaking enters methane gas extraction pipeline 24, it is to avoid drill site 1 watt
This transfinites.
Mining electromagnetic wave wireless while-drilling measuring device is launched short by inclination measuring short piece 25, battery sleeve 26, signal
Joint 27, blast switch 28, signal-receiving electrode 29 and data collection processor 30 form, and wherein survey
Tiltedly pipe nipple 25, battery sleeve 26, signal transmitting pipe nipple 27, blast switch 28 are sequentially connected with composition electromagnetism
Ripple is with boring measurement while-drilling instrument string, and signal-receiving electrode 29 has 2, and one is arranged on creeping into place
In Ceng, one connects with hole interior orientation drilling tool series winding, two signal-receiving electrodes 29 all with data acquisition at
Reason device 30 connects.Its detailed process carrying out DATA REASONING and signal transmission is: after round trip creeps into end,
After blast switch 28 monitors Mine Air Compressor 18 closedown, start inclination measuring short piece 25 and measure inclination angle, side
The drilling trajectory parameters such as parallactic angle and tools for angle；Signal transmitting pipe nipple 27 receives inclination measuring short piece 25 and returns
The deviational survey data returned, and by coding rule set in advance by the deviational survey data that receive by logical cable without
Magnetic insulation pipe nipple 10 top rod post and bottom drill string are launched continuously with electromagnetic wave wireless mode；
Two signal-receiving electrodes 29 being arranged on aperture gather the electromagnetic wave signal uploaded and pass to data acquisition
Set processor 30；Signal is demodulated showing by data collection processor 30 by coding rule set in advance
Show；After emitting times reaches set point number value, signal launches pipe nipple 27 and inclination measuring short piece 25 stops work
Making, blast switch 28 continues to monitor blast situation of change continuously, waits next data firing order.
Seeing Fig. 3, logical cable is made up of exterior insulation assembly and built-in electrical insulation assembly without magnetic insulation pipe nipple 10,
Wherein exterior insulation assembly is passed through screwed connection group by upper metal conducting bar 31 and lower metal conducting bar 32
Become, and spray and define on its interconnective screw thread, shoulder and inside and outside wall screw thread insulating barrier 33,
Inner insulating layer 34 and external insulation layer 35.Built-in electrical insulation assembly is by lower insulating joint 36, hollow insulating bar
37, upper insulating joint 38, signal spring 39, positioning retainer ring 40, conduction copper core 41, signal back-up ring
42 and clamp nut 43 form, lower insulating joint 36, hollow insulating bar 37 and upper insulating joint 38
Pass sequentially through screwed connection, and by seat key at upper metal conducting bar 31 and lower metal conducting bar 32 step
Interior two positioning retainer rings 40 are fixed；During conduction copper core 41 is entered through by lower insulating joint 36 end
Empty insulating bar 37, the signal back-up ring in upper metal conducting bar 31 step by clamp nut 43 and seat key
42 spacing tensions；Signal spring 39 connects and composes interior signal path with conduction copper core 41, passes through signal
Back-up ring 42 and clamp nut 43 and turn on upper metal conducting bar 31, and with lower metal conducting bar 32
Insulation.
Specific embodiment described herein is only to present invention spirit explanation for example.The present invention
Person of ordinary skill in the field described specific embodiment can be made various amendment or
Supplement or use similar mode to substitute, but without departing from the spirit of the present invention or surmount appended power
Scope defined in profit claim.
Although the most more employ drill site 1, dig coal road 2, treat mining face 3, directional hole 4,
Coal road 5 to be dug, broken soft seam 6, protrusion-dispelling lead bit 7, cutting air screw motor 8, without magnetic variation
Wire connection hands 9, logical cable without magnetic insulation pipe nipple 10, without magnetic variation wire connection hands 9, cutting without magnetic instrument outer tube 11,
Become silk steel catcher 12, Rhizoma Sparganii cutting drilling rod 13, rotate blower 14, sparger 15, mining liquid
Press pump 16, concentrated tank 17, Mine Air Compressor 18, aperture hole sealing tube 19, aperture guiding device 20,
Dedusting defoaming device 21, froth breaking flow container 22, stop valve 23, methane gas extraction pipeline 24, inclination measuring short piece
25, battery sleeve 26, signal launch pipe nipple 27, blast switch 28, signal-receiving electrode 29, data
Acquisition Processor 30, upper metal conducting bar 31, lower metal conducting bar 32, screw thread insulating barrier 33, interior
Insulating barrier 34, external insulation layer 35, lower insulating joint 36, hollow insulating bar 37, upper insulating joint 38,
The art such as signal spring 39, positioning retainer ring 40, conduction copper core 41, signal back-up ring 42, clamp nut 43
Language, but it is not precluded from using the probability of other term.These terms are used to be only used to more convenient
Describe and explain the essence of the present invention；Being construed as any additional restriction is all and this
Spirit is contrary.
Claims (10)
1. a broken soft seam down-hole laddering gas pre-drainage directional hole drilling system, it is characterised in that
Including: hole interior orientation drilling tool string, aperture foam perfusion system, aperture froth breaking extraction system；Wherein:
Described hole interior orientation bores protrusion-dispelling lead bit (7), the cutting air that string tool includes being sequentially connected with
Screw motor (8), without magnetic variation wire connection hands (9), logical cable without magnetic insulation pipe nipple (10), cutting without magnetic instrument
Device outer tube (11), Rhizoma Sparganii cutting drilling rod (13), rotation blower (14)；Wherein said protrusion-dispelling orients
Drill bit (7) is internally provided with and only can pass through gas and water and the one-way check mechanism of solid particle by forward；Carve
Groove air screw motor (8) is by stable foam stream or empty air stream drives, and its stator material is nonmagnetic steel,
Continuous helical ash pit deep for 3mm is washed in stator exterior milling, starts pressure≤0.6Mpa, working flow
≤10m3/ min, length≤4m；Cutting uses hollow structure, outside milling without magnetic instrument outer tube (11)
Wash continuous helical ash pit deep for 3mm；
Described aperture foam perfusion system includes: the Mine Air Compressor (18), the foaming that are sequentially connected with fill
Put (15), mining hydraulic pump (16) and concentrated tank (17), described sparger (15) and rotation
Turn blower (14) to connect；
Described aperture froth breaking extraction system includes: the aperture hole sealing tube (19), the aperture that are sequentially connected with are led
Stream device (20), dedusting defoaming device (21), stop valve (23), methane gas extraction pipeline (24)；
Wherein, described dedusting defoaming device (21) connects with Mine Air Compressor (18) and froth breaking flow container (22)
Connect.
One the most according to claim 1 broken soft seam down-hole laddering gas pre-drainage orientation hole drill
Enter system, it is characterised in that also include mining electromagnetic wave wireless while-drilling measuring device, this is mining electromagnetism
Ripple wireless while-drilling measuring device includes: electromagnetic measurement while drilling instrument string, signal-receiving electrode (29)
And data collection processor (30), wherein, described electromagnetic measurement while drilling instrument string includes connecting successively
The inclination measuring short piece (25) that connects, battery sleeve (26), signal launch pipe nipple (27), blast switch (28)；
Described signal-receiving electrode (29) has 2, one be arranged on creep into place stratum in, one and hole
Interior orientation drilling tool series winding connects.
One the most according to claim 1 broken soft seam down-hole laddering gas pre-drainage orientation hole drill
Enter system, it is characterised in that described logical cable without magnetic insulation pipe nipple (10) include exterior insulation assembly and
Built-in electrical insulation assembly；Wherein:
Described exterior insulation assembly includes being led by the upper metal conducting bar (31) of screwed connection, lower metal
Electric pole (32), wherein, the inside and outside wall of interconnective screw thread, shoulder and metal conducting bar arranges silk
Button insulating barrier (33), inner insulating layer (34) and external insulation layer (35)；
Described built-in electrical insulation assembly includes by the lower insulating joint (36) of screwed connection, hollow insulating bar
And upper insulating joint (38) (37)；Conduction copper core (41) is entered also by lower insulating joint (36) end
Limited tension in upper metal conducting bar (31) step after hollow insulating bar (37), and with
Upper metal conducting bar (31) turns on；It is provided with in lower insulating joint (36) and conducts electricity copper core (41)
Connect and compose the signal spring (39) of interior signal path.
4. a broken soft seam down-hole laddering gas pre-drainage directional hole drilling method, it is characterised in that
Comprise the following steps:
Preparation of construction step, is arranged in drill site (1) and digs in coal road near treating mining face (3)
Side；And it is perpendicular to dig coal road (2) and directional hole (4) is set, described directional hole (4)
Tapping point is positioned at drill site (1)；
Orientation opening step, connects aperture foam perfusion system, according to design perforate inclination angle and azimuth
Use protrusion-dispelling lead bit (7) and Rhizoma Sparganii cutting drilling rod (13) rotary drilling the first distance, then carry
Bore replacing reaming bit reaming and to seal to first apart from rear lower man-hole opening hole sealing tube (19)；
Directional drilling step, connects aperture froth breaking extraction system, lower hand-hole interior orientation drilling tool string, will connect
Continuous foam injection hole, drives and lubrication cutting air screw motor (8) rotates detritus, it is achieved
Directional drilling；Utilize aperture froth breaking extraction system that the pollution foam containing landwaste is carried out dedusting in aperture
Froth breaking；
Put forward brill whole hole step, after directional hole (4) reaches projected depth, propose hole interior orientation drilling tool string,
Connect extraction pipeline and carry out gas pumping；After gas pumping is up to standard, tunnel coal road to be dug (5), exploitation
Treat mining face (3).
One the most according to claim 4 broken soft seam down-hole laddering gas pre-drainage orientation hole drill
Entering method, it is characterised in that in described preparation of construction step, the setting of directional hole is particularly as follows: orient
Hole (4) is positioned in the broken soft seam (6) of Polodyakonov coefficient coefficient 0.5≤f≤0.8, upper and lower displacement with
Broken soft seam (6) rises and falls and fluctuates, directional hole (4) length >=treat mining face (3) width+treat
Pick coal road (5) width+in advance away from；Obtain and light including of directional hole (4) every 3m from perforate
Design inclination angle, azimuth, left and right displacement and multiple directional hole (4) trajectory parameters of upper and lower displacement.
One the most according to claim 4 broken soft seam down-hole laddering gas pre-drainage orientation hole drill
Entering method, it is characterised in that in described directional drilling step, continuous foam produces process and is: mining
While air compressor machine (18) carries compressed gas to sparger (15), mining hydraulic pump (16)
From concentrated tank (17), aspirate foam solution and be delivered to sparger (15), in sparger (15)
Interior compressed gas mixes with foam solution, forms steady and continuous foam.
One the most according to claim 4 broken soft seam down-hole laddering gas pre-drainage orientation hole drill
Entering method, it is characterised in that in described directional drilling step, drilling hole dust collector defoaming process is: mining
Air compressor machine (18) carries compressed gas to dedusting defoaming device (21), and compressed gas is at dedusting froth breaking
The ejection of device (21) jet forms negative pressure cavity, is drawn into from froth breaking flow container (22) by froth breaking liquid
While dedusting defoaming device (21), foam will be polluted and be drawn into by aperture guiding device (20)
Dedusting defoaming device (21), lather collapse in dedusting defoaming device (21), landwaste and foam separation
And discharge from dedusting defoaming device (21) bottom；When drilling gas concentration height, open stop valve (23),
Gas after froth breaking enters methane gas extraction pipeline (24), it is to avoid drill site (1) gas exceeding limit.
One the most according to claim 4 broken soft seam down-hole laddering gas pre-drainage orientation hole drill
Enter method, it is characterised in that also include:
TRAJECTORY CONTROL step, for after round trip creeps into end, uses electromagnetic wave wireless drilling to measure dress
Put and carry out DATA REASONING and signal transmission, it is thus achieved that the drilling trajectory parameter of directional hole (4), bore rail by real
Follow-up drilling trace is adjusted after mark parameter and planned course parameter comparison.
One the most according to claim 8 broken soft seam down-hole laddering gas pre-drainage orientation hole drill
Enter method, it is characterised in that use electromagnetic wave wireless while-drilling measuring device to carry out DATA REASONING and signal
The detailed process of transmission is: after round trip creeps into end, blast switch (28) monitors Mine Air Compressor
(18), after closing, start inclination measuring short piece (25) and measure including inclination angle, azimuth and tools for angle
Drilling trajectory parameters；Signal is launched pipe nipple (27) and is received the deviational survey number that inclination measuring short piece (25) returns
According to, and by coding rule set in advance by the deviational survey data that receive by logical cable without magnetic insulation pipe nipple
(10) top rod post and bottom drill string are launched continuously with electromagnetic wave wireless mode；By installing
Two signal-receiving electrodes (29) in aperture gather the electromagnetic wave signal uploaded and pass to data acquisition
Set processor (30)；Signal is carried out by data collection processor (30) by coding rule set in advance
Demodulation display；After emitting times reaches set point number value, signal launches pipe nipple (27) and inclination measuring short piece
(25) quitting work, blast switch (28) continues monitoring blast situation of change continuously, waits next
Individual data firing order.
One the most according to claim 8 broken soft seam down-hole laddering gas pre-drainage directional hole
Drilling method, it is characterised in that adjust the method for follow-up drilling trace particularly as follows: work as directional hole (4)
The inclination angle of drilling trajectory and azimuth are respectively less than 3 ° with design load deviation, and real left and right displacement of boring is with upper and lower
Displacement and design load deviation are respectively less than 1m, utilize directional drilling rig revolution Rhizoma Sparganii cutting drilling rod (13)
And apply the pressure of the drill to hole interior orientation drilling tool string and carry out compound drilling, speed of gyration is 30～50r/min；No
Then directional drilling rig does not turn round Rhizoma Sparganii cutting drilling rod (13), and only in hole, drilling tool applies the pressure of the drill and slides
Move and creep into, directional hole (4) track is corrected to being consistent with planned course.
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| CN201610465429.7A CN105971517B (en) | 2016-06-23 | 2016-06-23 | The laddering gas pre-drainage directional hole drilling system in broken soft seam underground and method |
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| CN110067591A (en) * | 2018-01-24 | 2019-07-30 | 中铁二院工程集团有限责任公司 | Tunnel and flat lead pass through coal seam construction gas drainage method |
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| CN111173555A (en) * | 2020-01-07 | 2020-05-19 | 山西晋煤集团技术研究院有限责任公司 | Drilling and punching integrated construction process for comb-shaped long drilling hole of bottom suction roadway |
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| CN113565438A (en) * | 2021-08-31 | 2021-10-29 | 中煤科工集团重庆研究院有限公司 | Wireless monitoring system and monitoring method for mine drilling track |
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| CN114856473A (en) * | 2022-05-24 | 2022-08-05 | 中煤科工集团西安研究院有限公司 | Annular space back pressure stuck releasing device and method for directional drilling stuck accident in underground coal mine |
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| CN112832846B (en) * | 2021-02-05 | 2023-03-14 | 枣庄科技职业学院 | Extraction device and extraction method for extracting gas in old goaf of coal mine |
| CN113006709A (en) * | 2021-04-15 | 2021-06-22 | 伟卓石油科技(北京)有限公司 | Electromagnetic gap joint and mounting method thereof |
| CN113216934A (en) * | 2021-05-17 | 2021-08-06 | 吕梁学院 | Coal seam gas content measuring device of directional drilling machine |
| CN113216934B (en) * | 2021-05-17 | 2022-05-03 | 吕梁学院 | Coal seam gas content measuring device of directional drilling machine |
| CN113719237B (en) * | 2021-08-23 | 2023-10-27 | 中煤科工集团西安研究院有限公司 | Drilling tool assembly and method for directional long drilling construction of gas extraction of crushed soft and thin coal seam |
| CN113719237A (en) * | 2021-08-23 | 2021-11-30 | 中煤科工集团西安研究院有限公司 | Broken soft thin coal seam gas extraction directional long drilling construction drilling tool combination and method |
| CN113565457A (en) * | 2021-08-31 | 2021-10-29 | 中煤科工集团重庆研究院有限公司 | Broken soft coal seam large-dip-angle long drilling construction process |
| CN113565438A (en) * | 2021-08-31 | 2021-10-29 | 中煤科工集团重庆研究院有限公司 | Wireless monitoring system and monitoring method for mine drilling track |
| CN114856473A (en) * | 2022-05-24 | 2022-08-05 | 中煤科工集团西安研究院有限公司 | Annular space back pressure stuck releasing device and method for directional drilling stuck accident in underground coal mine |
| CN114893127A (en) * | 2022-07-14 | 2022-08-12 | 陕西太合工程技术服务有限责任公司 | Directional hydraulic drilling and mining integrated mining device and method for thin coal seam |
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