CN104453751A - Outburst-prevention, dust collection and slag discharging integrated device for coal roadway drilling construction - Google Patents
Outburst-prevention, dust collection and slag discharging integrated device for coal roadway drilling construction Download PDFInfo
- Publication number
- CN104453751A CN104453751A CN201410792673.5A CN201410792673A CN104453751A CN 104453751 A CN104453751 A CN 104453751A CN 201410792673 A CN201410792673 A CN 201410792673A CN 104453751 A CN104453751 A CN 104453751A
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- Prior art keywords
- dust
- aperture
- collect plant
- coal
- dispelling
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Classifications
-
- 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
- E21B21/01—Arrangements for handling drilling fluids or cuttings outside the borehole, e.g. mud boxes
- E21B21/015—Means engaging the bore entrance, e.g. hoods for collecting dust
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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
- E21B21/16—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor using gaseous fluids
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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 discloses an outburst-prevention, dust collection and slag discharging integrated device for coal roadway drilling construction. The device comprises a drilling machine system, a hydraulic system, a compressed air system and a power supply system and further comprises an orifice dust collection device, a movable outburst-prevention baffle, a hydraulic automatic feeding device, a fixed connection device, a dust removal and slag discharging device, a hydraulic branch system and a compressed air branch system. A compressed air branch connector is formed in the upper portion of the rear end of the orifice dust collection device, a slag discharging pipe is arranged below the compressed air branch connector and inclined downwards, the movable outburst-prevention baffle is fixed to the orifice dust collection device, the hydraulic automatic feeding device is connected with the orifice dust collection device, the fixed connection device fixes the hydraulic automatic feeding device to a drilling machine, and the dust removal and slag discharging device is connected with the slag discharging pipe of the orifice dust collection device through a connecting flexible hose. The integrated device organically combines the outburst-prevention device, the dust collection device and the slag discharging device, the problem that existing orifice-series dust removal device equipment is disperse is effectively solved, multiple functions are achieved through one device, and the integrated device is easy to operate and low in cost.
Description
Technical field
The present invention relates to multi-functional collection and the treating apparatus of a kind of colliery coal dust, gas and protrusion-dispelling.
Background technology
In projecting mine, preparatory working is generally arranged in coal seam, for carrying out release extinction, then coal road construct a large amount of concordant boring take out in advance; For making creeping into of boring arrive projected depth and construction environment needs, the deslagging mode that coal roadway drilling is constructed adopts wind-force but not waterpower often, but wind power slag-discharging deadly defect is aperture produces a large amount of coal dust, gas etc.; And because projecting coal bed ature of coal is soft or gas pressure greatly and easily induces coal and gas prominent.A large amount of coal dust and high concentration gas are gushed out and are caused the oxygen content in underground coal mine air reduce and affect health; Also can cause causing a large amount of casualtiess and facility to destroy because of coal dust, gas combustion or explosion accident.
For above-mentioned situation, research and develop the multi-function device that a kind of device can integrate protrusion-dispelling-control of dust (gas)-deslagging, control prevent and treat a difficult problem and a coal mine operation place air quality difficult problem by effectively solving gas and coal dust under existing Coal Mining Technology condition, bring important reality and social effect to the safety in production of mine and good operating environment.
Summary of the invention
The object of the invention is to provide a kind of device collected coal dust, gas and have that protrusion-dispelling function is integrated concurrently to mine coal roadway drilling construction, coal roadway tunneling can be solved to hole the outstanding problem of bringing out, effectively can solve again because boring a large amount of gas of gushing out forms methane accumulation problem, effectively can also carry out centralized processing to a large amount of dust gushed out.
The technical solution used in the present invention is as follows: coal roadway drilling construction protrusion-dispelling control of dust deslagging integrated apparatus, comprise existing weaponry and equipment: borer system, hydraulic system, compressed-air system, electric power system, also comprise aperture dust collect plant, movable protrusion-dispelling baffle plate, hydraulic pressure automatic feed device, fixed connection apparatus, dedusting slag-draining device, hydraulic branch system and pressure wind branch roads system.
Aperture dust collect plant, aperture dust collect plant upper rear end is provided with pressure wind tributary interface, is provided with the scum pipe under being tilted to below pressure wind tributary interface.Further, coal body is inserted in the front end for ease of aperture dust collect plant, and dust collect plant front end, aperture is pyramidal structure.Directly enter in coal road by the gap between drilling rod and aperture dust collect plant for stoping the coal dust of aperture blowout, at the end of described aperture dust collect plant, be provided with one wear-resisting and do not produce the pyrophoric polyurethane collar between drilling rod and aperture gathering-device, the polyurethane collar fixes one deck hairbrush again.
Movable protrusion-dispelling baffle plate, is fixed on the dust collect plant of aperture, comprises the circular protrusion-dispelling baffle plate of steel and middle hard rubber layer.Protrusion-dispelling plate and aperture dust collect plant adopt pin key to fix, and are convenient to handling, by coal road size and boring, its diameter arranges that row requires to determine.At protrusion-dispelling plate by rib side, hard rubber in fixing one deck so that with irregular rib close contact; Middle hard rubber layer is connected with steel circular protrusion-dispelling baffle plate screw rod, changes after being convenient to the wearing and tearing of middle hard rubber layer.
Hydraulic pressure automatic feed device, is connected with aperture dust collect plant, for aperture dust collect plant and the movable protrusion-dispelling baffle plate be arranged on the dust collect plant of aperture provide propulsive force.
Fixed connection apparatus, is applicable to the fixed connection apparatus of this rig feature in drilling machine clamp holder Position Design one, be fixed on rig by hydraulic pressure automatic feed device.
Dedusting slag-draining device, is connected by the scum pipe of connecting hose with aperture dust collect plant, carries out collection process to coal dust and gas.The floss hole that dedusting slag-draining device comprises multi-stage spray dust-falling mechanism and bottom drawer formula moving collection case and is connected with methane gas extraction pipeline, most end one-level atomizing de-dusting mechanism presss from both sides sponge by casing side by metal grill and is made.Described connecting hose employing metal integral helical spring steel wire is that the Polypropylence Sheet material of skeleton is made.
Hydraulic branch system, by drilling rig hydraulic system branch, supply hydraulic pressure automatic feed device is to feed power.
Pressure wind branch roads system, the air line branch provided by mine air compressor a: branch road carries out wind-force discharge to providing drilling rod to hole ground coal dirt cinder; Another branch road connects the pressure wind tributary interface on dust collect plant top, aperture, forms positive wine pressure and aperture coal dust cinder and gas are imported dedusting slag-draining device.
The coal roadway drilling of technique scheme construction protrusion-dispelling control of dust deslagging integrated apparatus tool is adopted to have the following advantages: one is protrusion-dispelling function, by action of hydraulic force on protrusion-dispelling plate, and forms certain barrier zones around boring; Two is collecting functions, adopts aperture dust collect plant to collect in drilling construction process because of the cinder of pressure wind discharge, coal dust and gas; Three is activity functions, and aperture dust collect plant and apparatus for feeding are coaxial with borer drill rod all the time, to meet the drilling construction requirement that coal roadway drilling construction has different (elevation angle and the angle of depression) and left and right (azimuth) aperture position up and down; Four is automatic functions, the apparatus for feeding of three grades of oil cylinders is adopted to realize aperture gathering-device to push to rib aperture position, and act on while rod boring and hydraulic drive power, the tapering point inserting coal body in the dust collect plant of aperture is advanced into projected depth, to form rock-steady structure with coal body; Five is dedusting deslagging functions, and cinder, coal dust and gas in drilling construction process process by research and development control of dust slag-draining device; Five is integrated functions, and namely above-mentioned each device realizes integration by applicable connection and fastening devices.
Coal roadway drilling construction protrusion-dispelling control of dust deslagging integrated apparatus of the present invention, organically the devices such as protrusion-dispelling, control of dust, deslagging are combined, both solved coal roadway tunneling to hole the outstanding problem of bringing out, efficiently solve again because boring a large amount of gas of gushing out forms methane accumulation problem, effectively can also carry out centralized processing to a large amount of dust gushed out, create works fine environment to coal road drilling construction.The present invention effectively solves the aperture series dust arrester equipment dispersion present situation used at present, and a machine realizes several functions, simple to operate, and cost is low.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in more detail.
As shown in Figure 1, coal roadway drilling construction protrusion-dispelling control of dust deslagging integrated apparatus of the present invention, comprise existing weaponry and equipment: borer system, hydraulic system, compressed-air system, electric power system, also comprise aperture dust collect plant 1, movable protrusion-dispelling baffle plate 2, hydraulic pressure automatic feed device 3, fixed connection apparatus 4, dedusting slag-draining device 4, hydraulic branch system and pressure wind branch roads system.
Aperture dust collect plant 1 is by steel pipe processing and fabricating, and coal body 8 is inserted in front end, forms rock-steady structure with rib 9.Coal body is inserted in front end for ease of aperture dust collect plant, and dust collect plant front end, aperture is pyramidal structure.Aperture dust collect plant 1 rear end is connected with hydraulic pressure automatic feed device 3.Aperture dust collect plant 1 upper rear end is provided with pressure wind tributary interface 11, is provided with the scum pipe 12 under being tilted to below pressure wind tributary interface 11.Directly enter in coal road by the gap between drilling rod and aperture dust collect plant for stoping the coal dust of aperture blowout, at the end of described aperture dust collect plant, be provided with one wear-resisting and do not produce the pyrophoric polyurethane collar 13 between drilling rod and aperture gathering-device, the polyurethane collar is fixed with one deck hairbrush again.
Movable protrusion-dispelling baffle plate 2 is fixed on aperture dust collect plant 1, comprises the circular protrusion-dispelling baffle plate 21 of steel and middle hard rubber layer 22.Movable protrusion-dispelling baffle plate 2 adopts pin key to fix with aperture dust collect plant 1, is convenient to handling, by coal road size and boring, its diameter arranges that row requires to determine.At movable protrusion-dispelling baffle plate 2 by rib 9 side, hard rubber 22 in fixing one deck so that with irregular rib 9 close contact; Middle hard rubber layer 22 is connected with screw rod with the circular protrusion-dispelling baffle plate 21 of steel, changes after being convenient to the wearing and tearing of middle hard rubber layer.
Hydraulic pressure automatic feed device 3 is connected with aperture dust collect plant 1, for aperture dust collect plant and the movable protrusion-dispelling baffle plate be arranged on the dust collect plant of aperture provide propulsive force.Hydraulic pressure automatic feed device 3 is made up of hydraulic valve, three grades of oil cylinders.The hydraulic circuit of oil cylinder is then provided by the pumping plant branch system in drilling rig hydraulic system.
Be provided with the fixed connection apparatus 4 that is applicable to this rig feature in drilling machine clamp holder position, hydraulic pressure automatic feed device 3 is fixed on rig 7.Fixed connection apparatus 4 makes to be fixed on the hydrofeeder 3 of drilling machine clamp holder position and aperture dust collect plant 1 with drilling rod 71 at same axis, meets can adjust the construction requirement of different orientations, angle of pitch boring aperture position along with rig to make hydrofeeder 3 and aperture dust collect plant 1.
Dedusting slag-draining device 5 is connected with the scum pipe 12 of aperture dust collect plant by connecting hose 6, carries out collection process to coal dust and gas.Connecting hose 6 adopts metal integral helical spring steel wire to be that the Polypropylence Sheet material of skeleton is made, and it has some strength, and can follow up at any time when diverse location drilling construction and easy to connect.
Dedusting slag-draining device 5 comprises one-level atomizing de-dusting mechanism 51,52, three grades of atomizing de-dusting mechanisms 53 of secondary atomizing de-dusting mechanism, level Four atomizing de-dusting mechanism 54 with bottom drawer formula moving collection case 55 and the floss hole 56 that is connected with methane gas extraction pipeline.Cinder and coarse granule coal dust, under one-level atomizing de-dusting mechanism 51 measurements for reduction, fall in the drawer type moving collection case 55 bottom dedusting slag-draining device immediately.For strengthening dust-laying effect, in secondary atomizing de-dusting mechanism 52, three grades of atomizing de-dusting mechanisms 53, level Four atomizing de-dusting mechanism 54 adopts the nozzle of three kinds of different pore sizes to carry out depositing dust process, dust removal process is carried out under two or the three level Four measurements for reduction in the then different mist footpath of the coal dust after one-level atomizing de-dusting mechanism 51, coal dust carries out dust removal process under the nebulization of different-grain diameter, also falls in the drawer box of bottom.Level Four atomizing de-dusting mechanism 54 presss from both sides sponge by casing side by metal grill and is made, and coal dust and water smoke is all blocked in dedusting slag-draining device.Described connecting hose 6 adopts metal integral helical spring steel wire to be that the Polypropylence Sheet material of skeleton is made, and it has some strength, can follow up at any time and easy to connect when diverse location drilling construction simultaneously.Drawer type moving collection case 55 bottom dedusting slag-draining device, can take out at any time after filling cinder coal dust after outwelling and insert wherein again as drawer.
Air after depositing dust process, if gas bearing capacity little (region outburst prevention measures put in place situation), then drain in coal road by the floss hole 56 in dedusting slag-draining device, wherein gas dilutes by ventilating; If mine gas extraction pipeline has been connected to heading drilling construction position, then floss hole 56 has been connected with methane gas extraction pipeline, and wherein gas is entered in methane gas extraction pipeline.
Pressure wind branch roads system, the air line branch provided by mine air compressor a: branch road carries out wind-force discharge to providing drilling rod to hole ground coal dirt cinder; Another branch road connects the pressure wind tributary interface on dust collect plant top, aperture.When rig creeps into, by wind-force, hole ground coal dirt cinder is blown to aperture dust collect plant, under the negative pressure of connecting hose and the acting in conjunction of pressure wind tributary interface place, top positive wine pressure, coal dust cinder in the dust collect plant of aperture imports in connecting hose rapidly under wind-force effect, enters in dedusting slag-draining device.
The course of work of the present invention is as follows:
After aperture dust collect plant, movable protrusion-dispelling plate, hydraulic pressure automatic feed device are installed respectively, adopt the clamper on fastening devices and rig to fix, and keep coaxial with drilling rod.
Start the hydraulic circuit switch of hydraulic pressure automatic feed device, hydraulic pressure automatic feed device is pushed ahead along drill rod axis direction, until the front end of aperture dust collect plant arrives drilling orifice position.
Start rod boring switch, make hydraulic pressure automatic feed device, along with rod boring, dust collect plant front end, aperture is advanced into projected depth, estimate and be advisable with rubber layer and rib close contact in movable protrusion-dispelling plate.
Turn off the push-on switch of hydraulic pressure automatic feed device, keep advancing the hydraulic coupling of rearmost position constant, support protrusion-dispelling plate and aperture dust collect plant, the barrier force that formation control coal and gas prominent and rib are caving.
Start the switch of the compressed-air system of borer system, open for wind power slag-discharging with at the wind path of dust collect plant top, aperture pressure wind tributary interface formation positive wine pressure simultaneously.Under the pressure wind effect in drilling rod of coal dust cinder bottom drilling rod and gas, blow the rear end to aperture dust collect plant, coal dust in rear end, aperture, gas and cinder, under the negative pressure acting in conjunction of positive wine pressure and connecting hose, together import in connecting hose, until enter in dedusting slag-draining device.
Start the level Four atomizing de-dusting switch in dedusting slag-draining device, the coal dust, cinder and the gas that come are collected to aperture and carries out classification process, until dedusting reaches ideal indicator.
Air after depositing dust process, if gas bearing capacity little (region outburst prevention measures put in place situation), then drain in coal road by the floss hole in dedusting slag-draining device, wherein gas dilutes by ventilating; If mine gas extraction pipeline has been connected to heading drilling construction position, then floss hole has been connected with methane gas extraction pipeline, and wherein gas is entered in methane gas extraction pipeline.
Apply specific embodiment herein to set forth principle of the present invention and embodiment, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping.The above is only the preferred embodiment of the present invention, should be understood that, due to the finiteness of literal expression, and objectively there is unlimited concrete structure, for those skilled in the art, under the premise without departing from the principles of the invention, some improvement, retouching or change can also be made, also above-mentioned technical characteristic can be combined by rights; These improve retouching, change or combination, or the design of invention and technical scheme are directly applied to other occasion without improving, and all should be considered as protection scope of the present invention.
Claims (7)
1. coal roadway drilling construction protrusion-dispelling control of dust deslagging integrated apparatus, comprises borer system, hydraulic system, compressed-air system and electric power system, it is characterized in that: also comprise
One aperture dust collect plant, aperture dust collect plant upper rear end is provided with pressure wind tributary interface, is provided with the scum pipe under being tilted to below pressure wind tributary interface;
One movable protrusion-dispelling baffle plate, is fixed on the dust collect plant of aperture;
-hydraulic pressure automatic feed device, is connected with aperture dust collect plant, for aperture dust collect plant and the movable protrusion-dispelling baffle plate be arranged on the dust collect plant of aperture provide propulsive force;
One fixed connection apparatus, is fixed on rig by hydraulic pressure automatic feed device;
-dedusting slag-draining device, is connected by the scum pipe of connecting hose with aperture dust collect plant, carries out collection process to coal dust and gas;
-hydraulic branch system, by drilling rig hydraulic system branch, supply hydraulic pressure automatic feed device is to feed power;
-pressure wind branch roads system, the air line branch provided by mine air compressor a: branch road carries out wind-force discharge to providing drilling rod to hole ground coal dirt cinder; Another branch road connects the pressure wind tributary interface on dust collect plant top, aperture, forms positive wine pressure and aperture coal dust cinder and gas are imported dedusting slag-draining device.
2. coal roadway drilling construction protrusion-dispelling control of dust deslagging integrated apparatus as claimed in claim 1, is characterized in that: dust collect plant front end, described aperture is pyramidal structure.
3. coal roadway drilling construction protrusion-dispelling control of dust deslagging integrated apparatus as claimed in claim 1, is characterized in that: the end of described aperture dust collect plant, be provided with the polyurethane collar between drilling rod and aperture gathering-device, and the polyurethane collar fixes one deck hairbrush again.
4. coal roadway drilling construction protrusion-dispelling control of dust deslagging integrated apparatus as claimed in claim 1, is characterized in that: described movable protrusion-dispelling baffle plate comprises the circular protrusion-dispelling baffle plate of steel and middle hard rubber layer, and middle hard rubber layer is arranged on by rib side.
5. coal roadway drilling construction protrusion-dispelling control of dust deslagging integrated apparatus as claimed in claim 1, is characterized in that: dedusting slag-draining device comprises multi-stage spray dust-falling mechanism and bottom drawer formula moving collection case and drawing-off gas mouth.
6. coal roadway drilling construction protrusion-dispelling control of dust deslagging integrated apparatus as claimed in claim 5, is characterized in that: most end one-level atomizing de-dusting mechanism presss from both sides sponge by casing side by metal grill and is made.
7. coal roadway drilling construction protrusion-dispelling control of dust deslagging integrated apparatus as claimed in claim 1, is characterized in that: described connecting hose employing metal integral helical spring steel wire is that the Polypropylence Sheet material of skeleton is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410792673.5A CN104453751A (en) | 2014-12-20 | 2014-12-20 | Outburst-prevention, dust collection and slag discharging integrated device for coal roadway drilling construction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410792673.5A CN104453751A (en) | 2014-12-20 | 2014-12-20 | Outburst-prevention, dust collection and slag discharging integrated device for coal roadway drilling construction |
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| CN104453751A true CN104453751A (en) | 2015-03-25 |
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| CN201410792673.5A Pending CN104453751A (en) | 2014-12-20 | 2014-12-20 | Outburst-prevention, dust collection and slag discharging integrated device for coal roadway drilling construction |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104775778A (en) * | 2015-03-31 | 2015-07-15 | 山东大学 | Dynamic-induction dust collecting and slag removing device in drilling machine drilling process and method |
| CN105386735A (en) * | 2015-12-02 | 2016-03-09 | 湖南科技大学 | Hydraulic feeding device for coal road dry-boring orifice dust collector |
| CN106677728A (en) * | 2017-03-22 | 2017-05-17 | 内蒙古上海庙矿业有限责任公司 | Dust remover for dry drilling |
| CN106703698A (en) * | 2016-12-05 | 2017-05-24 | 泰尔达能源科技（北京）有限公司 | Underground coal mine auto-drilling apparatus and method |
| CN107605528A (en) * | 2017-09-30 | 2018-01-19 | 阳泉煤业（集团）有限责任公司 | A kind of boring method for suppressing driving face dust |
| CN108301799A (en) * | 2018-04-03 | 2018-07-20 | 淮北矿业股份有限公司 | A kind of hole pumping and mining dust-extraction unit and its application method |
| CN110454214A (en) * | 2019-08-31 | 2019-11-15 | 贵州大学 | A kind of tapping equipment for gas drainage |
| CN113266298A (en) * | 2021-05-26 | 2021-08-17 | 中煤平朔集团有限公司 | Orifice negative pressure blowout prevention dust fall device and use method thereof |
| CN114233218A (en) * | 2021-12-01 | 2022-03-25 | 中煤科工集团西安研究院有限公司 | Automatic slag discharging system and method for underground drilling construction of coal mine |
| CN114412393A (en) * | 2022-01-06 | 2022-04-29 | 淮北矿业股份有限公司 | Dry-wet slag discharging device for drilling holes in bottom plate |
| 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 |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104775778A (en) * | 2015-03-31 | 2015-07-15 | 山东大学 | Dynamic-induction dust collecting and slag removing device in drilling machine drilling process and method |
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| CN105386735A (en) * | 2015-12-02 | 2016-03-09 | 湖南科技大学 | Hydraulic feeding device for coal road dry-boring orifice dust collector |
| CN106703698A (en) * | 2016-12-05 | 2017-05-24 | 泰尔达能源科技（北京）有限公司 | Underground coal mine auto-drilling apparatus and method |
| CN106677728A (en) * | 2017-03-22 | 2017-05-17 | 内蒙古上海庙矿业有限责任公司 | Dust remover for dry drilling |
| CN107605528A (en) * | 2017-09-30 | 2018-01-19 | 阳泉煤业（集团）有限责任公司 | A kind of boring method for suppressing driving face dust |
| CN108301799A (en) * | 2018-04-03 | 2018-07-20 | 淮北矿业股份有限公司 | A kind of hole pumping and mining dust-extraction unit and its application method |
| CN110454214A (en) * | 2019-08-31 | 2019-11-15 | 贵州大学 | A kind of tapping equipment for gas drainage |
| CN113266298A (en) * | 2021-05-26 | 2021-08-17 | 中煤平朔集团有限公司 | Orifice negative pressure blowout prevention dust fall device and use method thereof |
| CN114233218A (en) * | 2021-12-01 | 2022-03-25 | 中煤科工集团西安研究院有限公司 | Automatic slag discharging system and method for underground drilling construction of coal mine |
| CN114233218B (en) * | 2021-12-01 | 2023-11-21 | 中煤科工集团西安研究院有限公司 | Automatic slag discharging system and method for underground coal mine drilling construction |
| CN114412393A (en) * | 2022-01-06 | 2022-04-29 | 淮北矿业股份有限公司 | Dry-wet slag discharging device for drilling holes in bottom plate |
| 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 |
| 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 |
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Effective date of registration: 20160218 Address after: 411201 Xiangtan, Yuhu District, Hunan stone pier No. 2 Applicant after: Hunan Sci-Tech Univ. Address before: 411201 School of energy resources, Taoyuan Road,, Hunan Province, Xiangtan Applicant before: Hunan Sci-Tech Univ. Applicant before: Huaibei Mining Industry Co., Ltd. Applicant before: Luo Wenke |
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