CN104405385B - A kind of steeply inclined thin seam self-propelled simple drill coal-winning machine and recovery method - Google Patents
A kind of steeply inclined thin seam self-propelled simple drill coal-winning machine and recovery method Download PDFInfo
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- CN104405385B CN104405385B CN201410515189.8A CN201410515189A CN104405385B CN 104405385 B CN104405385 B CN 104405385B CN 201410515189 A CN201410515189 A CN 201410515189A CN 104405385 B CN104405385 B CN 104405385B
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C27/00—Machines which completely free the mineral from the seam
- E21C27/20—Mineral freed by means not involving slitting
- E21C27/22—Mineral freed by means not involving slitting by rotary drills with breaking-down means, e.g. wedge-shaped drills, i.e. the rotary axis of the tool carrier being substantially perpendicular to the working face, e.g. MARIETTA-type
Abstract
A kind of steeply inclined thin seam self-propelled simple drill coal-winning machine and recovery method, belong to brill coal-winning machine and recovery method. Described simple drill coal-winning machine includes main frame, bench board, pumping plant, crawler body, support hydraulic pressure column, base, firm hydraulic prop, drilling tool assembly and spillplate, in drilling tool assembly, drill bit drilling rod is attached by planet wheel decelerator, and spillplate adopts all-transparent design; Described brill coal-winning machine is utilized to propose a kind of steeply inclined thin seam recovery method, regulate support hydraulic pressure stem height and determine drilling direction, the coal of extraction falls on drag conveyor along boring cave under gravity, goaf adopts spontaneous caving method to process, and drilling face draft type is U-shaped draft type. The present invention efficiently solves bit freezing problem, what ensure brill coal-winning machine creeps into power and broken coal effect, having that production process is simple, working face equipment cost is low, technical economic benefit advantages of higher, to improving mine coal mining rate, to extend mine service-life significant.
Description
Technical field
The present invention relates to a kind of brill coal-winning machine and recovery method, particularly to a kind of steeply inclined thin seam self-propelled simple drill coal-winning machine and recovery method.
Background technology
In recent years, China's majority mine enters into the length of service later stage, for prolonging length of service, selects exploitation steeply inclined thin seam. Steeply inclined thin seam occurrence condition is complicated, has the features such as exploitation difficulty is big, the coal resources rate of extraction is low, production of resources consumption is big, and tradition recovery method complex process, production efficiency are low, equipment and technology requires height, it is difficult to obtain good techno-economic effect.
Summary of the invention
The invention aims to provide a kind of simple in construction, easy to operate steeply inclined thin seam self-propelled simple drill coal-winning machine and recovery method, complex process, production efficiency existing when solving tradition recovery method exploitation steeply inclined thin seam are low, equipment and technology requires high problem.
To achieve these goals, technical scheme: this brill coal-winning machine includes: main frame, bench board, pumping plant, support hydraulic pressure column, crawler body, base, firm hydraulic prop, drilling tool assembly and spillplate; Main frame, bench board, pumping plant and drilling tool assembly are fixed on base, and firm hydraulic prop suit is fixed on four angles of base, and base is connected with crawler body by four support hydraulic pressure columns;Spillplate is connected to the side of base, and the drill bit of drilling tool assembly stretches out spillplate.
Described drilling tool assembly is made up of drill bit, bit adapter, high torque output shaft, planetary reduction gear, low torque input shaft, tool joint, drilling rod, drill rod connector and water injector; Drill bit, bit adapter, high torque output shaft, planetary reduction gear, low torque input shaft, tool joint and drilling rod are linked in sequence; Described drill bit adopts tapered drill bit, is connected with drilling rod by planetary reduction gear, and the high torque output shaft of planetary reduction gear is connected with drill bit by bit adapter, and low torque input shaft is connected with drilling rod by tool joint; Drilling rod adopts outer flush drill stem, is connected by drill rod connector between two drilling rods, and drilling rod has many, and is linked in sequence successively; Described water injector is fixed on inside drilling rod.
Described spillplate adopts all-transparent material to make.
The recovery method of this brill coal-winning machine, comprises the steps:
1), arranging in haulage gate and bore coal-winning machine, drag conveyor and rubber conveyer, placing plant equipment in air return way, staff is directly entered into drilling work surface by haulage gate, and air return way is served only for ventilating, haul, not pedestrian;
2), regulate support hydraulic pressure stem height to be adjusted boring coal-winning machine fuselage angle of inclination, drill bit and drilling rod is made to carry out boring coal to air return way along seam inclination direction by haulage gate, until crossheading is formed through brill cave up and down, exit after brill cave completely until drill bit and drilling rod, bore coal-winning machine integral forward lead, and stay set brill cave coal column, enter subsequent cycle;
3), the coal of extraction, under gravity along boring cave free-falling to the drag conveyor of underface, is scattered in outer coal and loads drag conveyor manually, reprint on rubber conveyer subsequently, be carried out haulage gate in drilling process;
4), during driving, crossheading adopts bolting with wire mesh mode, and during drilling, near drilling work surface, tunnel adopts hinged girder steel to coordinate firm hydraulic prop to carry out local strengthening supporting;
5), the goaf after drilling adopts not supporting, spontaneous caving method to process;
6), ventilate: adopt U-shaped draft type, fresh distinguished and admirable entered into drilling work surface by haulage gate, brill cave after through is entered into the big lane of return air by air return way and drains into returnairshaft, the quantity boring cave as vent passages need to be increased when gas flowing in coal layer is bigger, and adopt booster to add forced ventilation, brill cave not as vent passages is stamped airtight, and adopts mobile brattice to isolate goaf brill cave in time, carry out sealing treatment.
Beneficial effect, owing to have employed such scheme,
1) a kind of steeply inclined thin seam self-propelled simple drill coal-winning machine that the present invention proposes, has the advantages such as volume little, lightweight, simple in construction, convenient transportation, provides technical equipment condition for steeply inclined thin seam exploitation. Adopt crawler body structure, it is possible to achieve bore coal-winning machine in crossheading from walking, cancel work surface rig auxiliary conveying equipments, reduce working face equipment cost; Immediate support drilling work surface, raising work surface safety, with drilling-machine shifter, are played an important role by firm hydraulic prop; Regulate hydraulic pressure support stem height and be adjusted drilling machine body angle of inclination, it is determined that drilling direction; Drill bit adopts tapered drill bit, drilling rod adopts outer flush drill stem, and both are connected by planetary reduction gear, have both efficiently solved bit freezing problem, what ensure again brill coal-winning machine creeps into power and broken coal effect, in drilling process, when drill bit encounters relatively hard roof and floor, drilling rod also can be partial to drilling in coal, automatically drilling direction is adjusted within the specific limits, what form " meeting hard partially soft " creeps into feature so that drill bit all the time along drilling in coal, can improve the drilling quality of coal;Drilling rod realizes many by drill rod connector and is sequentially connected with, and provides equipment and technology basis for improving the drilling degree of depth.
2) a kind of steeply inclined thin seam recovery method that the present invention proposes has that production process is simple, working face equipment cost is low, technical economic benefit advantages of higher, can produce and can not exploit or more difficult working seam in the past, to improve mine coal mining rate, extend mine service-life significant. Adopting self-propelled simple drill coal-winning machine to exploit, coal mining personnel only need to operate in crossheading and just can complete whole progress of coal mining, reduce number of workers and configuration, reduce labor strength, improve the working environment of workers safety; Simplify coaling, coal heaver's sequence, the coal of extraction is directly loadable into drag conveyor by deadweight, after transport work surface and crossheading through rubber conveyer, reduce Coal Transport corollary equipment and use, simplify coal transportation system, reduce Coal Transport cost; Utilize and bore the ventilation of cave back work face, both reduced the internal methane accumulation of brill cave, also avoid dirty wind through workman job site, improve workman's working environment; Work surface utilizes the firm hydraulic prop of rig to carry out local supporting, simplifies face timbering operation, helps speed up coal mining supporting operating speed; When roof and floor integrity is good, enclosing lithologies is harder, bore coal pillar width between cave rationally stay set can ensure that goaf be not caving, earth's surface subzero heavy, it is achieved lasting exploit.
Accompanying drawing explanation
Fig. 1 is the brill coal-winning machine structural front view of the present invention.
Fig. 2 is the brill coal-winning machine structure left view of the present invention.
Fig. 3 is the drilling coal machine drill tool assembly structure schematic diagram of the present invention.
Fig. 4 is the drilling work surface floor map of the embodiment of the present invention.
Fig. 5 is the drilling work surface generalized section of the embodiment of the present invention.
Fig. 6 is the drilling face-airing schematic diagram of the embodiment of the present invention.
In figure: 1, main frame, 2, bench board, 3, pumping plant, 4, support hydraulic pressure column, 5, crawler body, 6, base, 7, firm hydraulic prop, 8, drilling tool assembly, 81, drill bit, 82, bit adapter, 83, high torque output shaft, 84, planetary reduction gear, 85, low torque input shaft, 86, tool joint, 87, drilling rod, 88, drill rod connector, 89, water injector, 9, spillplate, 10, bore coal-winning machine, 11, drag conveyor, 12, rubber conveyer, 13, haulage gate, 14, air return way, 15, bore cave, 16, bore cave coal column, 17, drilling work surface, 18, airtight, 19, mobile brattice.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described, and detailed description of the invention is as follows:
This brill coal-winning machine includes: main frame 1, bench board 2, pumping plant 3, support hydraulic pressure column 4, crawler body 5, base 6, firm hydraulic prop 7, drilling tool assembly 8 and spillplate 9; Main frame 1, bench board 2, pumping plant 3 and drilling tool assembly 8 are fixed on base 6, and firm hydraulic prop 7 suit is fixed on 6 four angles of base, and base 6 is connected with crawler body 5 by four support hydraulic pressure columns 4; Spillplate 9 is connected to the side of base, and the drill bit of drilling tool assembly 8 stretches out spillplate 9.
Described drilling tool assembly 8 is made up of drill bit 81, bit adapter 82, high torque output shaft 83, planetary reduction gear 84, low torque input shaft 85, tool joint 86, drilling rod 87, drill rod connector 88 and water injector 89; Drill bit 81, bit adapter 82, high torque output shaft 83, planetary reduction gear 84, low torque input shaft 85, tool joint 86 and drilling rod 87 are linked in sequence;Described drill bit 81 adopts tapered drill bit, is connected with drilling rod 87 by planetary reduction gear 84, and the high torque output shaft 83 of planetary reduction gear 84 is connected with drill bit 81 by bit adapter 82, and low torque input shaft 85 is connected with drilling rod 87 by tool joint 86; Drilling rod 87 adopts outer flush drill stem, is connected by drill rod connector 88 between two drilling rods 87, and drilling rod 87 has many, and is linked in sequence successively; It is internal that described water injector 89 is fixed on drilling rod 87.
Described spillplate 9 adopts all-transparent material to make. Described all-transparent material is lucite or is implosion guard.
A kind of steeply inclined thin seam self-propelled simple drill coal-winning machine, as shown in Figure 1, Figure 2, Figure 3 shows, forming including main frame 1, bench board 2, pumping plant 3, support hydraulic pressure column 4, crawler body 5, base 6, firm hydraulic prop 7, drilling tool assembly 8 and spillplate 9, wherein drilling tool assembly 8 is made up of drill bit 81, bit adapter 82, high torque output shaft 83, planetary reduction gear 84, low torque input shaft 85, tool joint 86, drilling rod 87, drill rod connector 88 and water injector 89; Main frame 1, bench board 2 and pumping plant 3 are fixed on base 6, firm hydraulic prop 7 suit is fixed on 6 four angles of base, base 6 is connected with crawler body 5 by four support hydraulic pressure columns 4, the height regulating four support hydraulic pressure columns 4 is adjusted boring coal-winning machine fuselage angle of inclination, in order to determine drilling direction.
The drill bit 81 of drilling tool assembly 8 adopts tapered drill bit, it is connected with drilling rod 87 by planetary reduction gear 84, the high torque output shaft 83 of planetary reduction gear 84 is connected with drill bit 81 by bit adapter 82, and low torque input shaft 85 is connected with drilling rod 87 by tool joint 86. Tapered drill bit can improve the coal powder quantity of bore of drill bit 81, increase the intensity of drill bit 81, low for drilling rod 87 torque axis is changed to high torque and is input to drill bit 81 by planetary reduction gear 84 simultaneously, greatly reduce self moment of torsion of drilling rod 87, hardness according to coal seam and rate of penetration, selecting the planetary reduction gear of different speed ratio and supporting joint to carry out creeping into, operation can effectively ensure that drill bit 81 creeps into power and broken coal effect.
Drilling rod 87 adopts outer flush drill stem, can many be sequentially connected with, be sequentially connected with by drill rod connector 88 between two drilling rods. During drilling, drill bit 81 encounters relatively hard roof and floor, and drilling rod 87 can be partial to drilling in coal, automatically adjusts drilling direction within the specific limits, and what form " meeting hard partially soft " creeps into feature so that drill bit 81 can all the time along drilling in coal.
It is internal that water injector 89 is fixed on drilling rod 87, it is ensured that sprays water in time in drilling process.
Spillplate 9 adopts all-transparent to design, and has both ensured that boring coal-winning machine 10 accurately carries out drilling operation, has entered into the working space of workman, improve the safety of workman's working environment when being also prevented from the coal downslide of extraction.
During seam mining, adopting the wet type mode of creeping into carry out drilling, before using rig, whether the water injector 89 that need to check in drilling rod 87 blocks, after guaranteeing that each cubicle switch, Circuits System each several part and electric locking device are in normal operating conditions, the quasi-operation in side.
A kind of steeply inclined thin seam self-propelled simple drill coal-winning machine recovery method, as shown in Fig. 4, Fig. 5, Fig. 6, its technical process is:
1), in haulage gate 13, brill coal-winning machine 10, drag conveyor 11 and rubber conveyer 12 are arranged, plant equipment is placed in air return way 14, wherein, staff is directly entered into drilling work surface 17 by haulage gate 13, and air return way 14 is served only for ventilation, haul;
2) angle of inclination boring coal-winning machine 10 as shown in Figure 4, Figure 5, is first adjusted so that it is inclination angle is consistent with seam inclination; Then carry out boring coal to air return way 14 along seam inclination direction by haulage gate 13 with drilling rod 87 by drill bit 81, when being drilled a joint drilling rod 87, should stop immediately advancing drilling rod 87, then turn off the work of other devices such as drill bit 81, water injector 89, subsequently by drill rod connector 88 continued access drilling rod 87, then open drill bit 81 to rotate, simultaneously to boring water spray in cave 15, continue to advance, until crossheading is formed through brill cave 15 up and down, the brill cave 15 after through can ventilate as later stage vent passages back work face; When boring after through upper and lower two crossheadings of cave 15, drill bit 81 reversely rotates, and one save and unloads all drilling rods 87, all exits after brill cave 15 until drilling rod 87 and drill bit 81, brill coal-winning machine 10 integral forward lead, and stays the brill cave coal column 16 setting one fixed width, entrance subsequent cycle;
Wherein: the factors such as the continued access speed v of drilling rod 87 and drill bit 81 size power, coal petrography hardness are relevant, in an embodiment, v value is 6��8min/ joint; Boring cave diameter d to be determined by coal seam thickness, being generally more or less the same, in an embodiment, coal seam belongs to girdle, and therefore d value is 600��1300mm; Boring cave degree of depth l mainly to be determined by factors such as drilling rod 87 mechanical property, coal petrography hardness, in an embodiment, l value is 20��30m, when hardness high when drilling rod pliability, coal is less, bores cave degree of depth l up to more than 50m; The factors such as the main roof and floor integrity of cave coal pillar width b, wall rock condition of boring determine, in embodiment, b takes 200��300mm, when roof and floor integrity is good, enclosing lithologies is harder, stay the brill cave coal column 15 setting rational width can realize goaf be not caving, earth's surface subzero heavy.
3), coal natural repose angle is generally less than 45 ��, the coal of extraction is under gravity along boring cave 15 free-falling to the drag conveyor 11 of underface, it is scattered in outer coal and loads drag conveyor 11 manually, reprint subsequently on rubber conveyer 12, be carried out haulage gate 13;
4) crossheading adopts rectangular cross section; During driving, crossheading adopts bolting with wire mesh mode, and during drilling, near drilling work surface 17, tunnel adopts hinged girder steel to coordinate firm hydraulic prop 7 to carry out local strengthening supporting;
5), the goaf after drilling adopts not supporting, spontaneous caving method to process;
6), ventilate: adopt U-shaped draft type, this method of ventilation using through brill cave 15 as vent passages, fresh distinguished and admirable entered into drilling work surface 17 by haulage gate 13, entered into the big lane of return air through several through brill caves 15 by air return way 14 and drain into returnairshaft, the reserved quantity n boring cave 15 is determined by factors such as coal-face Air Quantity Required, brill cave diameter d, for realizing safety in production, in low gaseous mine, n generally takes 3 or 4, highly gassy mine needs increase vent passages quantity in right amount, and adopts booster to add forced ventilation; For all the other brill caves not as vent passages, the mode such as " meeting six to enter three ", " meeting entering the quater final " according to different coal geological conditions, can be adopted to carry out sealing treatment, utilize mobile brattice 19 to isolate goaf simultaneously and bore cave 15. Bore in cave 15, figure 1��No. 7 bore cave as vent passages as it is shown in figure 5, embodiment adopts " meeting entering the quater final " mode carry out processing goaf, distinguished and admirable enter into drilling work surface 17 via haulage gate 13, bore cave respectively through 1��No. 7 and enter air return way 14;After No. 8 brill caves are formed through ventilation channel, 1��No. 4 brill cave is stamped airtight 18 in time, and mobile brattice 19 to 5 bores cave place and carries out sealing treatment, leave at least 4 brill caves with guarantee and meet face-airing demand.
Claims (2)
1. a steeply inclined thin seam self-propelled simple drill coal-winning machine, is characterized in that: this brill coal-winning machine includes: main frame, bench board, pumping plant, support hydraulic pressure column, crawler body, base, firm hydraulic prop, drilling tool assembly and spillplate; Main frame, bench board, pumping plant and drilling tool assembly are fixed on base, and firm hydraulic prop suit is fixed on four angles of base, and base is connected with crawler body by four support hydraulic pressure columns; Spillplate is connected to the side of base, and the drill bit of drilling tool assembly stretches out spillplate;
Described drilling tool assembly is made up of drill bit, bit adapter, high torque output shaft, planetary reduction gear, low torque input shaft, tool joint, drilling rod, drill rod connector and water injector; Drill bit, bit adapter, high torque output shaft, planetary reduction gear, low torque input shaft, tool joint and drilling rod are linked in sequence; Described drill bit adopts tapered drill bit, is connected with drilling rod by planetary reduction gear, and the high torque output shaft of planetary reduction gear is connected with drill bit by bit adapter, and low torque input shaft is connected with drilling rod by tool joint; Drilling rod adopts outer flush drill stem, is connected by drill rod connector between two drilling rods, and drilling rod has many, and is linked in sequence successively; Described water injector is fixed on inside drilling rod;
Described spillplate adopts all-transparent material to make.
2. one kind utilizes the recovery method of steeply inclined thin seam self-propelled simple drill coal-winning machine described in claim 1, it is characterised in that comprise the steps:
(1) the interior layout of haulage gate bores coal-winning machine, drag conveyor and rubber conveyer, places plant equipment in air return way, and staff is directly entered into drilling work surface by haulage gate, and air return way is served only for ventilation, haul, not pedestrian;
(2) regulate support hydraulic pressure stem height to be adjusted boring coal-winning machine fuselage angle of inclination, drill bit and drilling rod is made to carry out boring coal to air return way along seam inclination direction by haulage gate, until haulage gate and air return way are formed through brill cave, exit after brill cave completely until drill bit and drilling rod, bore coal-winning machine integral forward lead, and stay set brill cave coal column, enter subsequent cycle;
(3) in drilling process, the coal of extraction is under gravity along boring cave free-falling to the drag conveyor of underface, is scattered in outer coal and loads drag conveyor manually, reprints on rubber conveyer subsequently, be carried out haulage gate;
(4) during driving, crossheading adopts bolting with wire mesh mode, and during drilling, near drilling work surface, tunnel adopts hinged girder steel to coordinate firm hydraulic prop to carry out local strengthening supporting;
(5) goaf after drilling adopts not supporting, spontaneous caving method to process;
(6) ventilate: adopt U-shaped draft type, fresh distinguished and admirable entered into drilling work surface by haulage gate, brill cave after through is entered into the big lane of return air by air return way and drains into returnairshaft, the quantity boring cave as vent passages need to be increased when gas flowing in coal layer is bigger, and adopt booster to add forced ventilation, brill cave not as vent passages is stamped airtight, and adopts mobile brattice to isolate goaf brill cave in time, carry out sealing treatment.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104975855A (en) * | 2015-06-19 | 2015-10-14 | 黄斌 | Hole drilling machine for ore extraction |
| CN106677781B (en) * | 2017-01-25 | 2019-01-01 | 中国矿业大学 | A kind of ultra-thin coal seam drilling release anti-reflection method |
| 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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