CN108374640B - The soft projecting coal bed foam pressure-increasing directional drilling equipment of underground coal mine and method - Google Patents
The soft projecting coal bed foam pressure-increasing directional drilling equipment of underground coal mine and method Download PDFInfo
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- CN108374640B CN108374640B CN201810250933.4A CN201810250933A CN108374640B CN 108374640 B CN108374640 B CN 108374640B CN 201810250933 A CN201810250933 A CN 201810250933A CN 108374640 B CN108374640 B CN 108374640B
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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
- 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
- E21B21/063—Arrangements for treating drilling fluids outside the borehole by separating components
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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
Abstract
A kind of soft projecting coal bed foam pressure-increasing directional drilling equipment of underground coal mine and method.Drilling equipment of the invention is made of pressurization air feed system, bubbling jet system, directional drilling system and dust and gas foam fraction factor system, using continuous foam stream as scouring media, using pressurization air supply mode and bubbling jet principle, generates drilling high-pressure foam；Deep hole directional drilling and composite highly effective deslagging are carried out under high-pressure foam and drilling machine composite drive using directional drilling system；Dust and gas foam stream after the pollution returned out using dust and gas foam fraction factor system to drilling carries out purified treatment.Hole wall is protected to stablize on the whole; scouring media conveying capacity, drilling tool cooling effect, drilling ability and the drilling cuttings for improving drilling equipment carry Scavenging activity; prevent the generation of drilling accident Yu aperture gas exceeding limit accident; meet the needs of deep hole directional drilling is to high-pressure foam, provides technology and equipment Safeguard for soft projecting coal bed deep hole directional drilling.
Description
Technical field
The present invention relates to the technical field of underground coal mine tunnel drilling more particularly to a kind of underground coal mine are soft projecting coal bed
Foam pressure-increasing directional drilling equipment and method.
Background technique
Gas is the important accident potential in safety of coal mines high-efficiency mining, to ensure that it is safe that the later period mines, it is necessary to right in advance
Coal-bed gas carries out pre- extraction, and gas drainage efficiency seriously affects seam mining efficiency.
Drilling is the Major Technology for carrying out gas drainage.It is soft projecting coal bed widely distributed in China, it can mine
Occupy sizable ratio in layer, China's major part highly gassy mine, coal and gas outburst mine be it is soft projecting coal bed,
Coal body is broken, permeability is low, gas pressure is big, mash gas pumping drilling construction is difficult, and gas drainage regulation effect is badly in need of improving.
In recent years, to solve the problems, such as soft projecting coal bed mash gas pumping drilling construction, China develops waterpower direct circulation and returns
Turn drilling technology and rotary-percussive drilling technology, auger stem dry type rotary drilling technology, special-shaped drilling rod air drilling technology, bubble
Foam/atomization drilling technology, air reverse circulation drilling technology, casing air drilling technology, pectination drilling Technology of Directional Drilling, mud
Pulse measurement while drilling Technology of Directional Drilling and the air guided drilling technology of electromagnetic measurement while drilling etc., Completion of Drilling Hole rate and Cheng Kongshen
To improve wall stability when spending and improve, but still having the disadvantage that 1. soft projecting coal bed drilling, preferably use
Air is as scouring media, but air drilling cooling effect is poor, dust is big, and environmental pollution is serious, and there are the safety such as burning, explosion
Hidden danger；2. when the progressive mash gas pumping drilling construction in region, the scouring media pressure and flow that the directional tool of use needs are equal
It is larger, and as drilling depth is gradually increased, scouring media circulation resistance increases, and drilling cuttings, which carries, in hole removes difficulty, easily leads to
Drilling accident, deep well drilling, which has high pressure air feed or foam, to be needed urgently；3. at present mainly using mining air compressor into
Wind pressure air feed in row, air feed wind pressure≤1.25MPa, and without the high pressure air feed air compressor machine for meeting safety of coal mines requirement, mine is existing
There is air supply ability not to be able to satisfy deep well drilling and directional drilling needs.
For this purpose, designer of the invention, in view of drawbacks described above, by concentrating on studies and designing, synthesis is engaged in for many years for a long time
The experience and achievement of related industry, researching and designing go out a kind of soft projecting coal bed foam pressure-increasing directional drilling equipment of underground coal mine with
Method, to overcome drawbacks described above.
Summary of the invention
The purpose of the present invention is to provide a kind of soft projecting coal bed foam pressure-increasing directional drilling equipments of underground coal mine and side
Method, can overcome the deficiencies of existing technologies, and when effectively solving the soft projecting coal bed drilling of current underground coal mine, pure air drilling is easy
Pollution environment, there are security risks；Foam drilling, air feed wind pressure is limited, is not able to satisfy deep well drilling and directional drilling needs
It is insufficient.
To solve the above problems, the invention discloses a kind of soft projecting coal bed foam pressure-increasing directional drilling dresses of underground coal mine
It is standby, it is made of pressurization air feed system, bubbling jet system, directional drilling system and dust and gas foam fraction factor system, it is characterised in that:
It is pressurized air feed system and pressure air is provided, the pressure air includes low-pressure air and pressure-air, the jet stream
Foamed system, which is connected to pressurization air feed system and mixes pressure air with foam solution, generates high-pressure foam, the directional drilling system
System is connected to bubbling jet system to carry out drilling construction using high-pressure foam, and the dust and gas foam fraction factor system is connected to pressurization
Air feed system simultaneously is used to separate drilling cuttings, methane gas from the pollution foam that aperture is returned out using pressure air, avoids dust
It is escaped with methane gas.
Wherein: the pressurization air feed system by air above the mine compressor, mining air compressor, low pressure wind conveying pipe road, in
Press wind conveying pipe road, mining air supercharger, driving air hose, pressurization air hose and high-pressure air hose composition, the air above the mine compressor
It is connect with low pressure wind conveying pipe road；The mining air compressor is connect with middle pressure wind conveying pipe road；The mining air supercharger is logical
Air hose of overdriving is connect with low pressure wind conveying pipe road, and is connect by being pressurized air hose with middle pressure wind conveying pipe road, and the mining air increases
Press is output to the outside high-pressure blast by high-pressure air hose.
Wherein: the mining air supercharger includes driving air inlet, pressurization air inlet, booster body and high-pressure gas
Tank, the driving air inlet and pressurization air inlet are respectively connected to driving air hose and are pressurized air hose, the outlet of the booster body
It is connected to high pressure tank.
Wherein: the bubbling jet system includes sequentially connected gas monitoring system, impact jet flow foam maker, liquid prison
Control system, foam pump and foam liquid case, high pressure gas is introduced to impact jet flow foam maker by the gas monitoring system, described
Gas monitoring system includes at least first flow regulating valve and mining high-voltage gas flowmeter, and the foam pump is connected to foam
Liquid case, the liquid monitoring system are set between foam pump and impact jet flow foam maker.
Wherein: the impact jet flow foam maker includes shell, and one end of the shell is equipped with gas flow guiding mouth, to introduce height
It calms the anger body, the shock plate positioned at gas flow guiding mouth side is equipped in the shell, the other end of the shell is equipped in insertion shell
Liquid jet pipe, foam liquid is introduced, the shell be equipped with foam outlet, between the foam outlet and shock plate
It is additionally provided with for the perforative cutting net of liquid jet pipe.
Wherein: the dust and gas foam fraction factor system includes dust arrester, dust delivering tube and separation chamber, and the dust arrester passes through defeated dirt
Pipe is connected to separator, and the separator is equipped with gas jet device, water mist sprinkling device and solid-liquid discharge outlet.
Wherein: catching sheet described in the catching sheet being oppositely arranged in the separator equipped with muti-piece interval is another with respect to dust delivering tube
Side is equipped with gas extraction mouth, so that the pernicious gas in it be extracted out in time.
Wherein: the directional drilling system includes sequentially connected rotation conveyer, special-shaped drill steel, special-shaped nonmagnetic steel brill
Bar, non-return valve drilling tool, double-shaft two-way damper, air screw motor and lead bit, the rotation conveyer are connected to jet stream
Foamed system, to be introduced by the high-pressure foam stream of bubbling jet system.
Also disclose a kind of soft projecting coal bed foam pressure-increasing directional drilling method of underground coal mine, it is characterised in that this method
The following steps are included:
Step 1: each composition system connection is connected, pressurization air feed system, bubbling jet system, Directional Drilling are sequentially connected
Into system and dust and gas foam fraction factor system；
Step 2: carrying out high pressure and low pressure air feed, passes through pressed gas needed for pressurization air feed system supply；
Step 3: introducing bubbling jet system for high pressure gas, generates high-pressure foam stream by bubbling jet system；
Step 4: directional drilling system is driven to be oriented drilling by high-pressure foam stream；
Step 5: gas dirt foam fraction factor is carried out by dust and gas foam fraction factor system；
Step 6: complete hole extraction.
By above structure it is found that the soft projecting coal bed foam pressure-increasing directional drilling equipment of underground coal mine of the invention and side
Method has the effect that
1, it using continuous foam stream as scouring media, reduces hole wall and washes away, support hole wall, cooling drilling tool, reduce drill site dust；
Drilling high-pressure foam is produced using pressurization air supply mode and bubbling jet principle using pressurization air feed system；Utilize Directional Drilling
Drilling deep hole construction and composite highly effective deslagging are oriented under high-pressure foam effect into system；Utilize dust and gas foam fraction factor system
Dust and gas foam stream after the pollution returned out to drilling carries out purified treatment, improves the scouring media conveying of drilling equipment on the whole
Ability, drilling ability, drilling cuttings carry Scavenging activity, drilling accident and aperture gas exceeding limit and prevent processing capacity；
2, meet the needs of deep hole directional drilling is to high-pressure foam, mentioned for soft projecting coal bed deep well drilling and directional drilling
Technology and equipment Safeguard have been supplied, and has ensured that drill site and roadway construction environment are clean.
Detailed content of the invention can be obtained by aftermentioned explanation and institute's attached drawing.
Detailed description of the invention
Fig. 1 shows that the overall structure of the soft projecting coal bed foam pressure-increasing directional drilling equipment of underground coal mine of the invention is shown
It is intended to.
Fig. 2 shows the structural schematic diagram of mining air booster in the present invention.
Fig. 3 shows the schematic diagram of bubbling jet system in the present invention.
Fig. 4 shows the schematic diagram of impact jet flow foam maker in the present invention.
Fig. 5 shows the schematic diagram of dust and gas foam fraction factor system in the present invention.
Fig. 6 shows directional drilling system schematic diagram in the present invention.
Appended drawing reference:
Bubbling jet system 1, directional drilling system 2, dust and gas foam fraction factor system 3, air above the mine compressor 4, mining sky
Air compressor 5, low pressure wind conveying pipe road 6, middle pressure wind conveying pipe road 7, mining air supercharger 8, driving air hose 9, pressurization air hose 10, height
Pressure ventilation pipe 11, hydraulic pipeline 12, gas drainage system 13, driving air inlet 14, first filter 15, first pressure gauge 16, the
One safety valve 17, the first pressure regulator valve 18, pressurization air inlet 19, the second filter 20, second pressure gauge 21, the second safety valve 22,
Second pressure regulator valve 23, booster body 24, silencer 25, high pressure tank 26, high pressure air outlet 27, first flow regulating valve 28,
First flange straight tube 29, mining high-voltage gas flowmeter 30, second flange straight tube 31, cooling gas check valve 32, impact jet flow foaming
Device 33, fluid flowmeter 35, second flow regulating valve 36, threeway 37, third flow control valve 38, unloads stream at liquid non-return valve 34
Pipe 39, foam pump 40, foam liquid case 41, gas flow guiding mouth 42, shock plate 43, cutting net 44, liquid jet pipe 45, fixed plate
46, cutting plate 47, shell 48, foam outlet 49, pressure gauge 50, dust arrester 51, seal assembly 52, dust delivering tube 53, gas jet
Device 54, separation chamber 56, solid-liquid discharge outlet 57, catching sheet 58, gas extraction mouth 59, rotates conveyer 60, is different water mist sprinkling device 55
Shape drill steel 61, special-shaped nonmagnetic steel drilling rod 62, non-return valve drilling tool 63, double-shaft two-way damper 64, air screw motor 65 and fixed
To drill bit 66
Specific embodiment
Referring to Fig. 1, it is shown that the soft projecting coal bed foam pressure-increasing directional drilling equipment of underground coal mine of the invention.
The soft projecting coal bed foam pressure-increasing directional drilling equipment of underground coal mine can be by pressurization air feed system, bubbling jet
System 1, directional drilling system 2 and dust and gas foam fraction factor system 3 form, wherein pressurization air feed system provides pressure air, it is described
Pressure air may include low-pressure air and pressure-air, and the bubbling jet system 1 is connected to pressurization air feed system and by pressure
Air is mixed with foam solution generates high-pressure foam, and the directional drilling system 2 is connected to bubbling jet system to steep using high pressure
Foam carries out drilling construction, and the dust and gas foam fraction factor system 3 is connected to pressurization air feed system 1 and utilizes pressure air for that will bore
Bits, methane gas are separated from the pollution foam that aperture is returned out, and dust and methane gas is avoided to escape.
Shown in Figure 1, pressurization air feed system of the invention needs to reach air supply ability >=4MPa, volume of air supply >=12m3/
The requirement of min, can by air above the mine compressor 4, mining air compressor 5, low pressure wind conveying pipe road 6, middle pressure wind conveying pipe road 7,
Mining air supercharger 8, driving air hose 9, pressurization air hose 10 and high-pressure air hose 11 form, and the air above the mine compressor 4 can pacify
It is connect mounted in the open flat position of coal mine ground, and with low pressure wind conveying pipe road 6；The mining air compressor 5 it is mountable
In the main intake of underground coal mine, and it is connect with middle pressure wind conveying pipe road 7；Low pressure wind conveying pipe road 6 can be sequentially connected by steel pipe
It forms, is arranged at intervals with quick socket and gas stop valve between each steel pipe；The mining air supercharger 8 is mountable in coal mine
Underground drill site can be connect with low pressure wind conveying pipe road 6 by driving air hose 9, and pass through pressurization air hose 10 and middle pressure wind conveying pipe road 7
Connection, the mining air supercharger 8 are output to the outside high-pressure blast by high-pressure air hose 11；The middle pressure wind conveying pipe road 7 is driven
Dynamic air hose 9, pressurization air hose 10 and high-pressure air hose 11 preferably use mining anti-high pressure rubber pipe.
Referring to fig. 2, it is shown that the present invention in mining air booster 8 one of embodiment, may include drive into
Air port 14, pressurization air inlet 19, booster body 24 and high pressure tank 26, the driving air inlet 14 and pressurization air inlet 19 divide
It is not connected to driving air hose 9 and pressurization air hose 10, so that the gas on low pressure wind conveying pipe road 6 and middle pressure wind conveying pipe road 7 is equal
Booster body can be introduced, the outlet of the booster body 24 is connected to high pressure tank 26, the high pressure of the high pressure tank 26
Air outlet 27 can be connected to the entrance of high-pressure air hose 11.
Wherein, first filter 15, first pressure can be successively arranged between the driving air inlet 14 and booster body 24
Table 16, the first safety valve 17 and the first pressure regulator valve 18 can be successively arranged between the pressurization air inlet 19 and booster body 24
Tow filtrator 20, second pressure gauge 21, the second safety valve 22 and the second pressure regulator valve 23, so as in two air inlets and booster body
Filtering, measurement, security control and voltage regulation function are formed between 24, wherein the booster body 24 is additionally provided with silencer 25, to mention
For the noise elimination effect in pressurization, avoid impacting underground construction.
Referring to Fig. 3, the bubbling jet system 1 include sequentially connected gas monitoring system, impact jet flow foam maker 33,
Liquid monitoring system, foam pump 40 and foam liquid case 41, the gas monitoring system are connected to the outlet of high-pressure air hose 11, with
High pressure gas is introduced to impact jet flow foam maker, the gas monitoring system can real-time monitoring and control when introducing high pressure gas
Air feed air quantity processed may include sequentially connected first flow regulating valve 28, first flange straight tube 29, mining high-voltage gas flow
Meter 30, second flange straight tube 31 and cooling gas check valve 32, wherein the length of the first flange straight tube 29 and second flange straight tube 31
Degree >=0.5m, the foam pump 40 are connected to foam liquid case 41, the foam liquid in foam liquid case 41 are pumped out, the liquid
Body monitoring system is set between foam pump 40 and impact jet flow foam maker 33, to the liquid for introducing impact jet flow foam maker 33
Body is monitored, and may include sequentially connected liquid non-return valve 34, fluid flowmeter 35, second flow regulating valve 36, threeway
37, third flow control valve 38 and flow tube 39 is unloaded, the outlet of the liquid non-return valve 34 is connected to impact jet flow foam maker 33, enters
Mouthful second flow regulating valve 36 is connected to by fluid flowmeter 35, the threeway be respectively connected to second flow regulating valve 36,
Foam pump 40 and unload flow tube 39, it is described unload flow tube 39 and be connected to foam liquid case 41 unload stream function to provide when pressure is excessive.
Referring to fig. 4, it is shown that one of embodiment of impact jet flow foam maker in the present invention, the impact jet flow foaming
Device 33 includes shell 48, and one end of the shell 48 is formed as back taper and is equipped with gas flow guiding mouth 42, the gas flow guiding mouth
42 are connected to the cooling gas check valve of gas monitoring system, to introduce high pressure gas, are equipped in the shell 48 and are located at gas flow guiding
The shock plate 43 of 42 sides of mouth, the other end of the shell 48 are equipped with the liquid jet pipe 45 in insertion shell, the liquid jet
Pipe 45 is connected to the liquid non-return valve of liquid monitoring system, and foam liquid is introduced, and the liquid jet pipe 45 protrudes into shell
In the 48 until other side of shock plate 43, the shell 48 is equipped with foam outlet 49, in the foam outlet 49 and shock plate 43
Between be additionally provided with for the perforative cutting net 44 of liquid jet pipe 45, wherein it is described cutting net 44 both ends can pass through fixation respectively
Plate 46 and cutting plate 47 are fixed on the inner wall of shell 48, and high pressure gas and foam liquid are netted by shock plate and cutting as a result,
After being sufficiently mixed, the well-mixed high-pressure foam jet stream of gas-liquid is formed, to effectively improve impact effect.
Wherein, the shell 48 is additionally provided with pressure gauge 50, to carry out real-time monitoring to internal pressure.
Referring to Fig. 5, it is shown that a preferred embodiment of dust and gas foam fraction factor system in the present invention, the dust and gas foam point
It may include dust arrester 51, dust delivering tube 53 and separation chamber 56 from system 3, the front end of the dust arrester 51 is connected to orifice sleeve, from
And handle the fume gases introducing in hole, the rear end of the dust arrester 51 is connected with seal assembly 52, inside seal assembly 52
Packing is installed, rotates dynamic sealing with special-shaped drilling rod；The dust arrester 51 is also connected to separator 56, institute by dust delivering tube 53
It states separator 56 and is respectively equipped with gas jet device 54 and water mist sprinkling device 55 in the entrance two sides of dust delivering tube 53, to introduce gas
Lock out operation is carried out with water mist, the bottom end of the separator 56 is equipped with solid-liquid discharge outlet 57, so that solid and liquid be arranged
It puts, wherein the gas jet device 54 is connect with low pressure wind conveying pipe road 6, and the water mist sprinkling device 55 is connect with hydraulic pipeline 12.
The catching sheet 58 being oppositely arranged in the separator 56 equipped with muti-piece interval, the muti-piece catching sheet can by solid and
Liquid is intercepted, and only gas is allowed to circulate, and the other side of the opposite dust delivering tube 53 of the catching sheet 58 is equipped with gas extraction mouth 59,
The gas extraction mouth 59 is connect with gas drainage system 13, so that the pernicious gas in it be extracted out in time.
Referring to Fig. 6, a preferred embodiment of directional drilling system 2 in the present invention is shown, the directional drilling system 2 can
It is double comprising sequentially connected rotation conveyer 60, special-shaped drill steel 61, special-shaped nonmagnetic steel drilling rod 62, non-return valve drilling tool 63, twin shaft
To damper 64, air screw motor 65 and lead bit 66, the rotation conveyer 60 is connected to bubbling jet system, with logical
The high-pressure foam stream for crossing bubbling jet system introduces.
Referring to FIG. 1 to FIG. 6, the invention also discloses a kind of soft projecting coal bed foam pressure-increasing directional drilling sides of underground coal mine
Method, method includes the following steps:
Step 1: each composition system connection is connected, pressurization air feed system, bubbling jet system 1, Directional Drilling are sequentially connected
Into system 2 and dust and gas foam fraction factor system 3；
Step 2: carrying out high pressure and low pressure air feed, by pressed gas needed for pressurization air feed system supply, in the present invention
In, air above the mine compressor 4, mining air compressor 5 can be opened, provides driving air and pressurization to mining air supercharger 8
Air；Booster body 24 is worked by driving air push, and will be pressurized the middle pressure supercharging air that air hose 10 inputs is high-pressure blast, and from
High pressure air outlet 27 exports；After driving air push booster body 24 to work, discharged from silencer 25；First pressure regulator valve 18,
Wind pressure, the wind for the middle pressure air that the driving air and pressurization air hose 10 that the adjustable driving air hose 9 of two pressure regulator valve 23 inputs input
Amount, discharge pressure of fan, air quantity so as to adjust mining air supercharger 8；When discharge pressure of fan reaches setting value, mining air pressurization
Machine 8 can be automatically stopped work；When discharge pressure of fan is lower than setting value, mining air supercharger 8 can automatically begin to work.
Step 3: introducing bubbling jet system for high pressure gas, high-pressure foam stream is generated by bubbling jet system, at this
In invention, can by mining air supercharger 8 to impact jet flow foam maker conveying high-pressure air while, foam pump is from foam
It is aspirated in flow container and foam solution and is delivered to impact jet flow foam maker 33, when foam solution is projected from liquid jet pipe 45 and shock plate
43 collision divergings, and it is mixed to form major diameter foam with compressed air, it is formed after cutting net 44 and cutting plate 47 refine continuous
Another typical material, and directional drilling system is delivered to by foam outlet 49, it is adjusted by adjusting first flow regulating valve 28, second flow
Valve 36 and third flow control valve 38 can effectively control the foam volume and foaming properties of generation.
Step 4: directional drilling system is driven to be oriented drilling by high-pressure foam stream.It is fixed that high-pressure foam stream is introduced
To the rotation conveyer of drilling system, and through hole bottom air screw motor 65 drives lead bit under the driving of high-pressure foam stream
66 revolution detritus, along planned course directional drilling to predetermined depth.In drilling process, non-return valve drilling tool 63 can prevent high pressure gas dirt
Gush out gas in foam or hole and is reversely overflowed along drill pipe bore；Double-shaft two-way damper 64 can reduce the drilling shake of air screw motor
It is dynamic, ensure measurement while-drilling instrument safety in special-shaped nonmagnetic steel drilling rod 62；Continuous foam stream device to hole subdrilling tool is cooled down, and device to hole
Wall forms certain support pressure, and protection hole wall is stablized；The slack coal of coal body escapes in hole gas, drilling generation is by foam packet
It wraps up in, forms gas dirt foam, under foamover and special-shaped drill steel 61 and special-shaped 62 rotary machine agitaion of nonmagnetic steel drilling rod,
It is delivered to aperture.
Step 5: gas dirt foam fraction factor is carried out by dust and gas foam fraction factor system 3.The gas dirt foam generated is crept into aperture
Dust arrester 51 in gather, seal assembly 52 prevent its along drilling rod outer annular space escape；To 54 air feed of gas jet device, gas is penetrated
It flows 54 surrounding of device and generates negative pressure, gas dirt foam is pumped to by separation chamber 56 by dust delivering tube 53；It supplies water to water mist sprinkling device 55,
Under water mist, catching sheet 58 and the volume expansion of negative pressure, the generation of water mist sprinkling device 55 that gas jet device 54 generates act on, bubble
Foam is vanished, and drilling cuttings, water, air, gas separation, drilling cuttings and sewage are discharged via solid-liquid discharge outlet 57, gas and air by watt
This extraction system is taken away.
Step 6: complete hole extraction.Drilling construction is carried out under high-pressure foam and drilling machine composite drive until reaching pre- depthkeeping
It spends, after the completion of drilling construction, proposes directional tool, sealing of hole is carried out to drilling, and connect gas drainage system 13 and carry out gas pumping
It adopts.
The present invention is by pressurization air feed system, bubbling jet system, directional drilling system and dust and gas foam fraction factor system as a result,
Composition, wherein pressurization air feed system is for providing pressure-air；Bubbling jet system is for mixing pressure-air with foam solution
And produce high-pressure foam；Directional drilling system is used to carry out drilling construction using high-pressure foam；Dust and gas foam fraction factor system is used for
Drilling cuttings, methane gas are separated from the pollution foam that aperture is returned out, dust and methane gas is avoided to escape.
The present invention has the advantages that
1, manipulation is simple and easy, meets the needs of deep hole directional drilling is to high-pressure foam, is soft projecting coal bed depth drill
Technology and equipment Safeguard are provided into directional drilling, and ensures that drill site and roadway construction environment are clean.
2, it using continuous foam stream as scouring media, reduces hole wall and washes away, support hole wall, cooling drilling tool, reduce drill site dust；
Drilling high-pressure foam is produced using pressurization air supply mode and bubbling jet principle using pressurization air feed system；Utilize Directional Drilling
Drilling deep hole construction and composite highly effective deslagging are oriented under high-pressure foam effect into system；Utilize dust and gas foam fraction factor system
Dust and gas foam stream after the pollution returned out to drilling carries out purified treatment, improves the scouring media conveying of drilling equipment on the whole
Ability, drilling ability, drilling cuttings carry Scavenging activity, drilling accident and aperture gas exceeding limit and prevent processing capacity.
It is readily apparent that above description and record is only illustrated in the disclosure being not intended to be limiting of the invention
Appearance, application or use.Although describing and being described in the accompanying drawings embodiment in embodiment, the present invention is not limited
Be described as by attached drawing example and in embodiment it is now recognized that optimal mode to implement the particular case of the teachings of the present invention
Son, the scope of the present invention will include any embodiment for falling into the description and appended claims of front.
Claims (7)
1. a kind of soft projecting coal bed foam pressure-increasing directional drilling equipment of underground coal mine, by pressurization air feed system, bubbling jet system
System, directional drilling system and dust and gas foam fraction factor system composition, it is characterised in that:
It is pressurized air feed system and pressure air is provided, the pressure air includes low-pressure air and pressure-air, the bubbling jet
System, which is connected to pressurization air feed system and mixes pressure air with foam solution, generates high-pressure foam, and the directional drilling system connects
Bubbling jet system is connected to carry out drilling construction using high-pressure foam, the dust and gas foam fraction factor system is connected to pressurization air feed
System simultaneously is used to separate drilling cuttings, methane gas from the pollution foam that aperture is returned out using pressure air, avoid dust and watt
The evolution of this gas；
The pressurization air feed system is by air above the mine compressor, mining air compressor, low pressure wind conveying pipe road, middle pressure wind conveying pipe
Road, mining air supercharger, driving air hose, pressurization air hose and high-pressure air hose composition, the air above the mine compressor and low pressure are defeated
Air pipe line connection；The mining air compressor is connect with middle pressure wind conveying pipe road；The mining air supercharger passes through driving wind
Pipe is connect with low pressure wind conveying pipe road, and is connect by being pressurized air hose with middle pressure wind conveying pipe road, and the mining air supercharger passes through
High-pressure air hose is output to the outside high-pressure blast；
The bubbling jet system includes sequentially connected gas monitoring system, impact jet flow foam maker, liquid monitoring system, bubble
High pressure gas is introduced to impact jet flow foam maker, the gas monitor by foam liquid pump and foam liquid case, the gas monitoring system
System includes at least first flow regulating valve and mining high-voltage gas flowmeter, and the foam pump is connected to foam liquid case, institute
Liquid monitoring system is stated to be set between foam pump and impact jet flow foam maker.
2. the soft projecting coal bed foam pressure-increasing directional drilling equipment of underground coal mine as described in claim 1, it is characterised in that: institute
Stating mining air supercharger includes driving air inlet, pressurization air inlet, booster body and high pressure tank, the driving air inlet
Driving air hose is respectively connected to pressurization air inlet and is pressurized air hose, and the outlet of the booster body is connected to high pressure tank.
3. the soft projecting coal bed foam pressure-increasing directional drilling equipment of underground coal mine as described in claim 1, it is characterised in that: institute
Stating impact jet flow foam maker includes shell, and one end of the shell is equipped with gas flow guiding mouth, to introduce high pressure gas, the shell
The interior shock plate being equipped with positioned at gas flow guiding mouth side, the other end of the shell are equipped with the liquid jet pipe in insertion shell, with
Foam liquid is introduced, the shell is equipped with foam outlet, is additionally provided between the foam outlet and shock plate and penetrates for liquid
The perforative cutting net of flow tube.
4. the soft projecting coal bed foam pressure-increasing directional drilling equipment of underground coal mine as described in claim 1, it is characterised in that: institute
Stating dust and gas foam fraction factor system includes dust arrester, dust delivering tube and separator, and the dust arrester is connected to separator by dust delivering tube,
The separator is equipped with gas jet device, water mist sprinkling device and solid-liquid discharge outlet.
5. the soft projecting coal bed foam pressure-increasing directional drilling equipment of underground coal mine as claimed in claim 4, it is characterised in that: institute
The catching sheet being oppositely arranged in separator equipped with muti-piece interval is stated, the catching sheet is taken out with respect to the other side of dust delivering tube equipped with gas
Mouth is adopted, so that the pernicious gas in it be extracted out in time.
6. the soft projecting coal bed foam pressure-increasing directional drilling equipment of underground coal mine as described in claim 1, it is characterised in that: institute
State directional drilling system include sequentially connected rotation conveyer, special-shaped drill steel, abnormity nonmagnetic steel drilling rod, non-return valve drilling tool,
Double-shaft two-way damper, air screw motor and lead bit, the rotation conveyer is connected to bubbling jet system, to pass through
The high-pressure foam stream of bubbling jet system introduces.
7. a kind of soft projecting coal bed foam pressure-increasing directional drilling method of underground coal mine, it is characterised in that this method includes following step
It is rapid:
Step 1: connection such as the soft projecting coal bed foam pressure-increasing directional drilling of underground coal mine as claimed in any one of claims 1 to 6
Each composition system of equipment is sequentially connected pressurization air feed system, bubbling jet system, directional drilling system and dust and gas foam point
From system；
Step 2: carrying out high pressure and low pressure air feed, passes through pressed gas needed for pressurization air feed system supply；
Step 3: introducing bubbling jet system for high pressure gas, generates high-pressure foam stream by bubbling jet system；
Step 4: directional drilling system is driven to be oriented drilling by high-pressure foam stream；
Step 5: gas dirt foam fraction factor is carried out by dust and gas foam fraction factor system；
Step 6: complete hole extraction.
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| CN110242215B (en) * | 2019-06-13 | 2020-09-01 | 中煤科工集团西安研究院有限公司 | Adjustable gas directional drilling equipment and method for underground broken soft coal seam of coal mine |
| CN111335813B (en) * | 2020-03-05 | 2021-07-13 | 中煤科工集团重庆研究院有限公司 | Underground comb-shaped hydraulic slotting permeability-increasing device and method based on directional drilling |
| CN111395949B (en) * | 2020-04-08 | 2021-08-17 | 中煤科工集团重庆研究院有限公司 | Efficient hole forming device and method for underground small-curvature comb-shaped hole |
| CN112855027B (en) * | 2021-02-06 | 2022-05-17 | 中国地质科学院勘探技术研究所 | Through type running-in method for deep sea expansion corrugated pipe |
| CN114412393B (en) * | 2022-01-06 | 2023-08-22 | 淮北矿业股份有限公司 | Dry and wet dual-purpose slag discharging device for drilling holes on bottom plate |
| CN115538925B (en) * | 2022-09-07 | 2023-05-05 | 盐城市新永佳石油机械制造有限公司 | Gas-liquid dual-purpose screw drilling tool |
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| CN101446178B (en) * | 2008-11-13 | 2011-11-16 | 煤炭科学研究总院西安研究院 | Wind pressure air drilling equipment in downhole soft outbursting coal bed and process matched therewith |
| CN201461616U (en) * | 2009-05-07 | 2010-05-12 | 无锡压缩机股份有限公司 | Pneumatic high-pressure supercharger control system |
| CN102587828B (en) * | 2012-03-06 | 2013-12-04 | 中国矿业大学 | Gas extraction and drilling cooperative drilling and protecting integrated system for soft coal seams and process |
| CN104514487A (en) * | 2013-09-30 | 2015-04-15 | 周升风 | Reverse circulation drilling device and process for soft projecting coal seam |
| CN104179657A (en) * | 2014-08-12 | 2014-12-03 | 南京师范大学 | Passive pneumatic pressurizing device for underground coal mine |
| CN105971517B (en) * | 2016-06-23 | 2017-11-10 | 中煤科工集团西安研究院有限公司 | The laddering gas pre-drainage directional hole drilling system in broken soft seam underground and method |
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