CN1888390A - High gas yoke thick coal seam quasi-large-scale mining and high comprehensive mining low-level caving technique - Google Patents
High gas yoke thick coal seam quasi-large-scale mining and high comprehensive mining low-level caving technique Download PDFInfo
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- CN1888390A CN1888390A CN 200610012957 CN200610012957A CN1888390A CN 1888390 A CN1888390 A CN 1888390A CN 200610012957 CN200610012957 CN 200610012957 CN 200610012957 A CN200610012957 A CN 200610012957A CN 1888390 A CN1888390 A CN 1888390A
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Abstract
The present invention discloses a high-gas loose thick coal seam coal-mining technique. It is characterized by that its working face adopts inclined long wall and retreating caving method. Besides, said invention also provides the concrete steps of its back production process. In the tunnel several gas monitoring substations are uniformly distributed, and used for transmission and control of gas signal.
Description
Technical field: the present invention relates to the coal mining technology.
Background technology: the part coalfield in China, along with the further increasing of the pit mining degree of depth, coal seam gas-bearing capacity also increases gradually, and the mine that influenced by gas is also more and more; Simultaneously, along with continuing to increase of work plane output, also make work plane be faced with serious day by day gas problem, gas exceeding limit becomes the major obstacle that the colliery fully mechanized coal face improves output with gathering.Especially the mine that has because its coal-bed gas adsorptivity is strong, must be implemented gas pumping at stope, and suitably increase ventilation, exploitation is carried out smoothly, otherwise will be restricted operating efficiency.
At large-scale coal industry, along with the raising of coal excavation apparatus level, some new coal-mining methods are also used, for example big mining and high comprehensive mining technology, longwall top coal caving technology etc. at present.The face-airing section of big mining and high comprehensive mining is big, the resources loss amount is little, is that high gas high seam is realized the better selection, particularly thickness of the high-yield and high-efficiency high seam less than 6.0m.But under the weak seam condition, big mining and high comprehensive mining work plane is preventing aspect top board roof fall, the coal wall wall caving comparatively difficulty.For loose thick coal layer, though the top coal emits putting property good, the longwall top coal caving coal cutting is highly less, and longwall top coal caving helps the wall caving control, because the high gas influence in coal seam, work plane also is not easy to realize high-yield and high-efficiency,
Goal of the invention: in order under high gas loose thick coal layer condition, to realize high-yield and high-efficiency, single gas control can not satisfy the production needs, must on the basis of conventional gas control, take all factors into consideration problems such as roadway arrangement, process for stoping and lectotype selection, could guarantee the coal high-yield and high-efficiency.Purpose of the present invention is exactly the advantage in conjunction with longwall top coal caving and big two kinds of coal-mining methods of mining and high comprehensive mining, provide a kind of high-yield and high-efficiency that is suitable for high gas loose thick coal layer to combine the technology of adopting, adopt the technical program can solve the exploitation of height mining face in the coal seam of 3.5m-3.8m.
The invention scheme:
Technical solution of the present invention mainly comprises the improvement of work plane corollary equipment, reasonable taking and placing technology and gas.
The corollary equipment of work plane has MGTY400/930-3.3D type coal-winning machine, ZF7000/19.5/38 type and ZFG7200/20/36 type hydraulic support, the anterior drag conveyor of SGZ-960/2 * 700 types, SGZ-960/2 * 700 type rear portion drag conveyors, SZZ-1200/400 type bridge conveyor, the wheeled crushing engine of PLM-3500 type, DSJ1400/200/3 * 400 type ribbon conveyers, and emulsion power pack, spraying pumping plant and load center are set simultaneously.
The communication of work plane and control: adopt the anterior transporter of TK200 system, rear portion transporter, elevating conveyor to work plane, crushing engine, the emulsification pumping plant, the clear water pumping plant carries out centralized Control, detect and show the start-stop state of coal-winning machine, and realize the apparatus overload warning in the running.Arrangements is as follows: controller is installed on the mobile power transformation car of crossheading sealing-tape machine one side, is used for the communication control system of work plane is realized centralized Control; Near the hands free telephone that the locking of a band is installed pumping plant is used for pumping plant conversation and locking; A long-distance intelligent start and stop phone is installed near elevating conveyor to be used on the spot start and stop control and the locking conversation of transportation head to anterior transporter, rear portion transporter; The anxious hands free telephone that stops of a backguy is installed near crushing engine, be used to that near the machine that selects backguy is anxious to stop and converse, 4 remote activation devices of configuration on this phone are used near crushing engine the anterior transporter of start and stop on the spot, rear portion transporter, elevating conveyor, crushing engine; Along the line at work plane, between support or the transporter lateral wall, adorn the hands free telephone of band locking every 15 meter amperes, until the work plane tail, locking that the face of finishing the work is along the line and call function; An intelligent terminal is installed at end in system, as the termination of native system.
The Communication Control of crossheading sealing-tape machine: adopt and the shared controller of work plane, utilize the second CS of controller along the line, under work plane and the not interactive situation of crossheading, at crossheading adhesive tape head intelligent input and output being installed is used for inserting, coal piling, smog, temperature, spread water, speed sideslip, and long-range start and stop button is realized the Communication Control to sealing-tape machine, adorning a TK230H backguy at belt per 100 meter amperes along the line suddenly stops, per 200 meter amperes are adorned the anxious hands free telephone that stops of TK230HA band backguy, are used for urgency along the line and stop and converse.
Coal-mining method and process for stoping: work plane adopts inclination longwell, the whole caving methods of retrusive comprehensive mechanization low caving coal full-seam mining.
Process for stoping flow process of the present invention is: the coal-winning machine coal cutting, coaling---move frame---push away preceding slide---put coal---drawing the back to slip---goaf top plate is given birth to row and is collapsed;
Feed mode: work plane adopts two ends to cut the feed of cutting sth. askew of triangle coal, 40 meters of feed distances;
Coal cutting, coaling, transport coal: when work plane adopts the normal coal cutting of double-ended shearer (cylinder cuts dark 0.8m), front roll cuts the top coal, back roll cuts ground coal, during the coal mining machine roller rotation, coal is got off by the pick fragmentation on the cylinder, and by the helical blade front scrapping plate transporter of packing into, is packed in the front scrapping plate transporter by ramp plate when a small amount of coal is slipped before pushing away, minute quantity is scattered in the float coal between support and preceding slide, in the front scrapping plate transporter of manually packing into;
The top coal that ground coal that working surface coal mining machine is cut off and support put down is transported to the termination unloading by two scratch board conveyors in front and back respectively, is transported by sealing-tape machine through elevating conveyor again.
The work plane mining height is controlled at 3.5 ± 0.1m, and that rib is adopted is flat, cut straight;
Move frame: work plane adopts ZF7000-19.5/38 type low caving coal hydraulic support management top board, and mode of operation is manually this operation fast, carries out chasing after machine operation, and order is moved frame;
Moving frame hysteresis coal-winning machine back roll 3-5m carries out, when local coal wall wall caving broad or top coal are broken, can move support immediately following cylinder before and after the coal-winning machine, and time shift frame control top board, unit advance 0.8m requires to move the frame after-poppet and becomes line, the elevation angle must not be greater than 7 degree, the support mismatch is no more than side guard board 2/3, and it is good to connect the top, and setting load reaches the regulation requirement;
Push away anterior transporter: hysteresis coal-winning machine back roll 20m carries out after moving frame;
Draw the rear portion transporter: put coal hysteresis 20m and draw the rear portion transporter unidirectional sequence to carry out, forbid to draw to the centre simultaneously from two ends;
When pushing away anterior transporter and drawing the rear portion transporter, requiring adjacent five pack supports to push away (drawing) very heavy order progressively moves, the sharp turn can not appear in transporter, must guarantee that transporter is flat, straight, steady, bending length is not less than 30m, and push-and-pull finishes, handgrip returns zero, must guarantee that the front and rear portions transporter is in line, push away, draw work when forbidding to shut down, prevent card, float the generation of chain accident; Must shut down operation when passing head, tail;
The caving coal: move past support, work plane rear portion transporter can carry out the operation of caving coal after running well;
Drawing coal technology: adopt double two-wheel to put coal in proper order;
Drawing interval: 0.8m, a cutter one is put;
Put the coal operation: regain plate, the operation tail boom is received the appropriate location, guarantees that the coal of emitting falls into the rear portion transporter, adopts and repeatedly shrinks tail boom repeatedly, makes big carbon fragmentation; Put and pack up tail boom after coal finishes, stretch out plate, the rear portion transporter is protected, when putting coal, emit the 1/3-1/2 of top coal amount at every turn, after the first round has put, carry out second every certain hour and take turns operation, see that cash parks; Generally speaking, two-wheeled has been put, and special circumstances are transferred third round;
Putting the ature of coal amount requires: when putting coal, put coal worker operation by two sole duties, and grasp the rear portion constantly and transport machine-made egg-shaped or honey-comb coal briquets amount size, prevent to press the slide accident to take place, note in the coal stream spoil situation of gushing out at any time, see that cash closes window, guarantee the coal rate of recovery, strict control percentage of shale content is put coal and is finished, and in time stretches out plate control cash.
The control of gas:
In the tunnel behind the winch of tailentry parking lot, help side, the gas monitor substation is set, be used for the transmission and the control of Gas Signal; Firedamp sensor is located in 10 meters scopes of work plane respectively and air way parking lot mouth inwards in the 10-15 rice scope, hangs the back probe positions and must not be not less than 200mm apart from the tunnel sidewall greater than 300mm apart from back timber.
Beneficial effect: adopt said method, solved the exploitation of height mining face in the coal seam of 3.5 ± 0.1m, effectively solve the face gas problem simultaneously, increased the taking and placing ratio, improved face propulsion speed, the unit single face reaches 4,000,000 tons the level of producing per year.
Claims (1)
1, the accurate big mining and high comprehensive mining low caving coal production technique of a kind of high gas loose thick coal layer is characterized in that:
The corollary equipment of work plane has MGTY400/930-3.3D type coal-winning machine, ZF7000/19.5/38 type and ZFG7200/20/36 type hydraulic support, the anterior drag conveyor of SGZ-960/2 * 700 types, SGZ-960/2 * 700 type rear portion drag conveyors, SZZ-1200/400 type bridge conveyor, the wheeled crushing engine of PLM-3500 type, DSJ1400/200/3 * 400 type ribbon conveyers, and emulsion power pack, spraying pumping plant and load center are set simultaneously;
Adopt the anterior transporter of TK200 system to work plane, the rear portion transporter, elevating conveyor, crushing engine, the emulsification pumping plant, the clear water pumping plant carries out centralized Control,
Work plane adopts inclination longwell, the whole caving methods of retrusive comprehensive mechanization low caving coal full-seam mining;
The process for stoping flow process is: the coal-winning machine coal cutting, coaling---move frame---push away preceding slide---put coal---drawing the back to slip---goaf top plate collapses to fall voluntarily.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200610012957 CN1888390A (en) | 2006-07-12 | 2006-07-12 | High gas yoke thick coal seam quasi-large-scale mining and high comprehensive mining low-level caving technique |
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| CN 200610012957 CN1888390A (en) | 2006-07-12 | 2006-07-12 | High gas yoke thick coal seam quasi-large-scale mining and high comprehensive mining low-level caving technique |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101852081A (en) * | 2010-03-18 | 2010-10-06 | 盘江煤电(集团)煤矿设计研究院有限公司 | Down-dip mining method of large inclination three- soft coal seam |
| CN101915099A (en) * | 2010-07-31 | 2010-12-15 | 太原理工大学 | Bidirectional U-shaped coal-mining method of thick coal bed by gateway layout along stability layer |
| CN102418525A (en) * | 2011-10-28 | 2012-04-18 | 山西晋城无烟煤矿业集团有限责任公司 | Soft coal seam long-wall high-mining-height comprehensive mechanized coal mining end mining method |
| CN102434158A (en) * | 2011-11-21 | 2012-05-02 | 大同煤矿集团有限责任公司 | Two-segment dual-wheel sequential top-coal caving method |
| CN102797464A (en) * | 2012-08-13 | 2012-11-28 | 大同煤矿集团有限责任公司 | Mining method for deterioration coal under intrusion of igneous rock |
| CN103216232A (en) * | 2013-04-09 | 2013-07-24 | 中国矿业大学 | Method for automatically regulating and controlling conveying load of high-gas coal face |
| US8590982B2 (en) | 2009-07-10 | 2013-11-26 | Joy Mm Delaware, Inc. | Longwall mining roof supports |
| CN108343439A (en) * | 2017-01-21 | 2018-07-31 | 董合祥 | Coal method is put in a kind of high-order presplitting layering of super high seam low level shake |
| CN113404492A (en) * | 2021-07-22 | 2021-09-17 | 河南神火煤电股份有限公司 | Fully-mechanized mining working face soft channel dust settling system and method |
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2006
- 2006-07-12 CN CN 200610012957 patent/CN1888390A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8590982B2 (en) | 2009-07-10 | 2013-11-26 | Joy Mm Delaware, Inc. | Longwall mining roof supports |
| US9670777B2 (en) | 2009-07-10 | 2017-06-06 | Joy Mm Delaware, Inc. | Longwall mining roof supports |
| CN101852081A (en) * | 2010-03-18 | 2010-10-06 | 盘江煤电(集团)煤矿设计研究院有限公司 | Down-dip mining method of large inclination three- soft coal seam |
| CN101915099A (en) * | 2010-07-31 | 2010-12-15 | 太原理工大学 | Bidirectional U-shaped coal-mining method of thick coal bed by gateway layout along stability layer |
| CN101915099B (en) * | 2010-07-31 | 2012-07-25 | 太原理工大学 | Bidirectional U-shaped coal-mining method of thick coal bed by gateway layout along stability layer |
| CN102418525A (en) * | 2011-10-28 | 2012-04-18 | 山西晋城无烟煤矿业集团有限责任公司 | Soft coal seam long-wall high-mining-height comprehensive mechanized coal mining end mining method |
| CN102418525B (en) * | 2011-10-28 | 2014-07-09 | 山西晋城无烟煤矿业集团有限责任公司 | Soft coal seam long-wall high-mining-height comprehensive mechanized coal mining end mining method |
| CN102434158A (en) * | 2011-11-21 | 2012-05-02 | 大同煤矿集团有限责任公司 | Two-segment dual-wheel sequential top-coal caving method |
| CN102797464A (en) * | 2012-08-13 | 2012-11-28 | 大同煤矿集团有限责任公司 | Mining method for deterioration coal under intrusion of igneous rock |
| CN103216232A (en) * | 2013-04-09 | 2013-07-24 | 中国矿业大学 | Method for automatically regulating and controlling conveying load of high-gas coal face |
| CN108343439A (en) * | 2017-01-21 | 2018-07-31 | 董合祥 | Coal method is put in a kind of high-order presplitting layering of super high seam low level shake |
| CN113404492A (en) * | 2021-07-22 | 2021-09-17 | 河南神火煤电股份有限公司 | Fully-mechanized mining working face soft channel dust settling system and method |
| CN113404492B (en) * | 2021-07-22 | 2023-08-08 | 河南神火煤电股份有限公司 | Soft channel dust fall system and method for fully mechanized coal mining face |
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