CN1179811A - Method of winning coal, particularly from thick coal-seams - Google Patents
Method of winning coal, particularly from thick coal-seams Download PDFInfo
- Publication number
- CN1179811A CN1179811A CN 95197789 CN95197789A CN1179811A CN 1179811 A CN1179811 A CN 1179811A CN 95197789 CN95197789 CN 95197789 CN 95197789 A CN95197789 A CN 95197789A CN 1179811 A CN1179811 A CN 1179811A
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- coal
- top layer
- hydraulic pressure
- work plane
- supporting arrangement
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Abstract
The invention refers to a method of winning coal, particularly from thick coal-seams. The substance of the method according to the invention lies in that roof coal is under control caved onto the armoured face conveyor over canopies of the supports in the front part of the face. Said controlled caving of the roof coal is maintained by raising and lowering the canopies of the hydraulic roof supports known per se. The size of the coal-loading opening formed by the wall of the front coal and the edge of the canopy of the hydraulic roof support is adjustable by means of the number of canopies and the inclination thereof.
Description
The present invention relates to a kind of method of particularly mining from high seam, it comprises by the preparation of the propelling of the propelling of the cutting in positive coal seam, work plane armo(u)red carrier, hydraulic pressure top layer supporting arrangement, work plane terminal and backboard and advances the front seam mining formed and by the fragmentation of coal, excavate and load onto the top layer coal mining that the work plane armo(u)red carrier is formed by the coal of control excavation by the coaling inter-road of door of the hydraulic pressure of hydraulic pressure top layer supporting arrangement.
A kind of method of excavating high seam is normally well-known.In addition, practical saying is, so-called high seam means respectively and can not once excavate on single plane and adopt to the greatest extent, thickness is above 5 meters simultaneously, therefore once developed a kind of method that can cut positive coal seam in Hungary, and the top layer coal is with boring and blast, then by the excavation of coalingging of the hydraulic pressure at work plane rear portion.
The further method of mining from high seam is developed by applicant oneself.Described method comprises adopts the positive layer coal and adopts the top layer coal.Adopting the positive layer coal is made up of cutting front coal wall, the propelling of work plane armo(u)red carrier, the propelling of hydraulic pressure top layer supporting arrangement, the preparation of work plane terminal and the propelling of backboard.Adopt the top layer coal by bore explosive hole, in described hole, fill destructor, blast, the hydraulic pressure of top layer supporting arrangement by the work plane rear portion coaling and excavate broken coal and to the work plane armo(u)red carrier and selectively the additional boring of coal cinder and the blast that are blocked on the passage of coalingging are formed.
Be from a shortcoming of the known method of thick coal-layer mining coal, coal excavates from the rear portion of hydraulic pressure top layer supporting arrangement, because the pressure on stratum, work plane top, the danger that uncontrollable broken formation is invaded the front portion of safety often appears, as a kind of consequence, its possibility interruption of work, the safety that simultaneously directly jeopardizes excavating equipment and miner, particularly a further shortcoming is, need relative high working time and manual labor in boring respectively with explosion time, its consequence is exactly respectively lower mining ability and higher cost, thereby has reduced the tonnage of producing, and a very important shortcoming is exactly the common danger that explosion time occurs.
The purpose of the present invention that is produced by above-mentioned shortcoming just provides a kind of method of mining from high seam especially, and in this method, the process of broken top layer coal is safety, reliable and simple under the condition that reduces the method cost than big production capacity simultaneously.
The essence of method of mining from high seam especially of the present invention is that the top layer coal is on the work plane armo(u)red carrier on the supporting arrangement top cover that excavates under the control in the work plane front portion.It is by promoting and the top cover of the hydraulic pressure top layer supporting arrangement that reduction itself is known keeps that described top layer coal has the excavation of control.The size of the passage of coalingging that is formed by the edge of front coal wall and hydraulic pressure top layer supporting arrangement top cover is adjustable by quantity and gradient thereof by means of top cover.The quantity of top cover and the size that gradient depends on the coal cinder that pushes up the zone, coal seam by way of parenthesis thereof have been reduced.In the excavation of having finished inter-road, the top cover of hydraulic pressure top layer supporting arrangement is placed in the horizontal plane that the passage of coalingging closes fully.
Comprise following job step according to method of the present invention:
A) carry out the cutting in positive coal seam by means of a cutter of forming by going barrel and dress pick thereon that in cutter haul system, advances.In this example, there is the drum of pick to dig out about 0.7 meter wide and 3 meters high zones.
B) the work plane armo(u)red carrier of being made up of each section that combines mutually is advanced to the space that is produced by the positive coal seam of cutting.The propelling of work plane armo(u)red carrier is carried out in the cutter rear segment, and in this example, on about 15 meters length, each push-in stroke is between 0 to 0.7 meter.
C) propelling of hydraulic pressure top layer supporting arrangement is to carry out from the unit segmentation of a unit to respectively.This operation is to finish under the situation of having unclamped in each unit, promptly reduces hydraulic prop, to be placed in hydraulic cylinder on the work plane armo(u)red carrier towards described transport vehicle, draws 0.7 meter of described unit respectively and draws transport vehicle self; Then described unit is trailed, reduce next simultaneously.
D) after the cutting of enough number of times has been finished in zone, positive coal seam, promptly be respectively 2 to 3 cuttings in hard and tough and tensile coal seam, behind minge layer 4 to 6 times, the fragmentation of beginning top layer coal.In this example, the total height of top layer coal is between 7 to 12 meters.Bore selectively at the top layer coal and to select the hole, blast one deck coal.The top layer coal is preferably finished it with hydraulic means by means of promoting and reducing top cover and exploit.Fragmentation and exploitation that top cover is exerted pressure on the coal seam and caused coal.
E) excavation of control is arranged is to carry out under such a case to Kai Cai top layer coal, when the capacity that excavates coal is to raise or when descending, perhaps when the coal seam on hydraulic pressure top layer supporting arrangement, promptly at direction of extraction, carry out under the broken in advance situation.Excavate the size of passage, extend partly and a bearing flat plate can reduce respectively or increase by means of of top cover.Slide before and after the prolongation of top cover partly, bearing flat plate is being closed and is being opened in 180 ° under the circular state simultaneously.
Above-mentioned a) to e) in the parameter quoted only quote as a nonrestrictive example, depend on employed mining equipment simultaneously.
In case when reaching the coal mining output that allowed or mine tailing and occurring, excavate coal from work plane and just stop.And then be another time cutting in positive coal seam and the series of steps of in aforementioned recommendation, describing.When work plane reaches exploitation during the limit (after about 300 to 800 meters), entire equipment just disassembles and transfers to another excavation site or transfer on the ground and repair.
Example:
In the text of back, it is as shown in the table for the numerical value of important parameter.Follow the trail of when described parameter is mined and obtain, first hurdle (A) represent the present invention's parameter before, and second hurdle (B) represents according to the parameter that method of the present invention obtained, and two groups of parameters are to obtain under face length is 100 meters situation.
A B
B： A
According to output ton per day 2000-4000 5000-8000 2.5-2.0 driving rice of the present invention/day 1.5-2.5 2-4 1.3-1.6 productivity ratio ton/rice, a day 30-40 50-80 1.7-2.0 face height rice 9-11 12-15 1.3-1.4 exploitation losses % 10-20 5-15 0.5-0.8 hired laborer counts 50-60 50-60 1.0-1.0 before the present invention
Excavate in the back in the method for front excavation and known use according to the present invention's use Method compare, have some advantages. So output increased, cost of winning reduces, standard The speed of standby work is favourable, and the blast step sees it in fact is to have avoided on the whole, and is every The artificial work of ton output reduces, and the efficient of winning apparatus is also higher.
Claims (2)
1. method of mining especially from high seam, comprise by the cutting of positive coal seam, the work plane armo(u)red carrier advances, hydraulic pressure top layer supporting arrangement advances, the preparation of work plane terminal and backboard advance the positive carbon seam mining of forming, with fragmentation by coal, excavate and the coal that is excavated by control is loaded onto the top layer coal mining that the work plane armo(u)red carrier is formed by the coaling inter-road of door of the hydraulic pressure of hydraulic pressure top layer supporting arrangement, it is characterized in that, it comprises the positive coal seam of cutting, the space that the propulsioning face armo(u)red carrier causes to the positive coal seam of cutting, the direction of hydraulic pressure top layer supporting arrangement to the work plane armo(u)red carrier advanced, by means of the broken top layer coal of top cover of rising and reduction hydraulic pressure top layer supporting arrangement, and there being the top layer coal exploited of control excavation on the hydraulic pressure top layer supporting arrangement top cover of work plane front to install on the work plane armo(u)red carrier.
2. in accordance with the method for claim 1, it is characterized in that, is to finish by enlarging and dwindle the passage of coalingging that the top cover edge by positive coal seam wall and hydraulic pressure top layer supporting arrangement forms in the excavation that control is arranged of work plane front top layer coal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95197789 CN1179811A (en) | 1995-03-20 | 1995-07-27 | Method of winning coal, particularly from thick coal-seams |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SIP9500091 | 1995-03-20 | ||
| CN 95197789 CN1179811A (en) | 1995-03-20 | 1995-07-27 | Method of winning coal, particularly from thick coal-seams |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1179811A true CN1179811A (en) | 1998-04-22 |
Family
ID=5083353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95197789 Pending CN1179811A (en) | 1995-03-20 | 1995-07-27 | Method of winning coal, particularly from thick coal-seams |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1179811A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1932240B (en) * | 2006-09-21 | 2010-07-28 | 闫振东 | Full-seam cutting, retreating, separate moving and full-caving comprehensive mechanized coal mining method |
| CN101457645B (en) * | 2008-04-30 | 2011-06-01 | 天地科技股份有限公司 | Thick coal seam stepwise full-seam coal mining method |
-
1995
- 1995-07-27 CN CN 95197789 patent/CN1179811A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1932240B (en) * | 2006-09-21 | 2010-07-28 | 闫振东 | Full-seam cutting, retreating, separate moving and full-caving comprehensive mechanized coal mining method |
| CN101457645B (en) * | 2008-04-30 | 2011-06-01 | 天地科技股份有限公司 | Thick coal seam stepwise full-seam coal mining method |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |