CN102031972B - L-shaped mining method under open-underground mining - Google Patents
L-shaped mining method under open-underground mining Download PDFInfo
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- CN102031972B CN102031972B CN 200910093004 CN200910093004A CN102031972B CN 102031972 B CN102031972 B CN 102031972B CN 200910093004 CN200910093004 CN 200910093004 CN 200910093004 A CN200910093004 A CN 200910093004A CN 102031972 B CN102031972 B CN 102031972B
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- 238000005065 mining Methods 0.000 title claims abstract description 77
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000009423 ventilation Methods 0.000 claims abstract description 7
- 239000003245 coal Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 230000005641 tunneling Effects 0.000 abstract description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000011084 recovery Methods 0.000 abstract description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract 1
- 239000011707 mineral Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000009931 harmful effect Effects 0.000 description 2
- 231100000614 poison Toxicity 0.000 description 2
- 230000007096 poisonous effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
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Abstract
The invention discloses an L-shaped mining method under open-underground mining, comprising the following steps: the existing mining mode that an air inlet gateway, a mining surface and an air return gateway are formed by tunneling is changed into a mining mode that only the air inlet gateway and the mining surface are formed by tunneling; the U-shaped arrangement of the existing air inlet gateway, the mining surface and the air return gateway is changed into the L-shaped arrangement of the air inlet gateway and the mining surface, wherein the mining surface and the air inlet gateway which are arranged in an L shape are communicated with a pressed ventilation system of a mine. In the invention, the method is simple, easy and practical, the recovery rate of mineral resource is greatly improved, the tunneling cost is reduced, the roadway tunneling support expense is reduced and the investment expense of tunneling equipment is reduced, so as to be beneficial to solving the problems of roadway maintenance, methane drainage and the like.
Description
Technical field
The present invention relates to a kind of exploitation method of ore bed, particularly a kind of well that reveals joins the L-type exploitation method of adopting.
Background technology
In the present prior art, in changed over to well worker mining process by surface mining, when the mining level ore bed, by the face of assigning a work from the intersection of open-air boundary and layered ore body along the bank of ore in the pit mining scope, air intake crossheading and air return way are arranged respectively in the stope two ends; Existing arrangement is arranged by air intake crossheading and the air return way formed " U " at stope and connection stope two ends.
In changed over to well worker mining process by surface mining, when exploitation gentle dip and inclined seam, air intake crossheading and air return way are arranged respectively in the stope two ends, to footrail, if assign a work in the conventional mode face, the ore deposit of basseting will be lost as ore pillar.
Shown in Fig. 1,1a, 2,2a, 2b, bank of ore in from described intersection along the pit mining scope face of assigning a work, air intake crossheading 3 and air return way 4 are arranged respectively in its two ends, the three is U-shaped layout, as shown in Figure 1a, arrange hydraulic support 7 and winning equipment 6 in the stope, when winning equipment 6 carries out mining activity and stope integral body is moved forward in stope, cause hydraulic support 7 supports under spoil 8 slumps in the mining face, is communicated with all the time to keep air intake crossheading 3, stope 2 and air return way 4.As shown in Figure 1, when stope integral body moved forward, the curtain wall 5 that forms between pit mining 20 and the strip mining transformation 10 was not exploited all the time, causes damage.
Summary of the invention
The purpose of this invention is to provide a kind of L-type exploitation method that the well connection is adopted of revealing, be beneficial to change into from surface mining the mining of well worker mining.
According to first aspect, the L-type exploitation method that dew well connection of the present invention is adopted may further comprise the steps:
The mining type that existing driving is formed air intake crossheading, stope and air return way changes the mining type that driving forms air intake crossheading and stope into;
Existing air intake crossheading, stope and air return way are U-shaped layout to be changed air intake crossheading and stope into and is L-type and arranges.
Wherein, described air intake crossheading is communicated with the pressure system of ventilation of mine, no longer stays the curtain wall of establishing between pit mining and the strip mining transformation.
Wherein, described stope is to arrange by the mode of digging open-off cut.
According to second aspect, the L-type exploitation method that dew well connection of the present invention is adopted may further comprise the steps:
Opencut is had an opencast mining of;
When surface mining reaches need to carry out the degree of depth of well worker mining to bank of ore the time, begin layered ore body is carried out well worker long-mining from the intersection of open-air boundary and layered ore body;
Bank of ore in from described intersection along the pit mining scope is arranged stope, forms the stope that directly leads to described intersection;
Described stope is communicated with the air intake crossheading, arranges so that air intake crossheading and stope are L-type;
At stope installation work face hydraulic support and winning equipment.
Wherein, described air intake crossheading is communicated with the mine air inlet system, so that directly enter in the atmosphere from distinguished and admirable described air intake crossheading, stope and the described intersection of flowing through of mine air inlet system.
Wherein, in the mining of described winning equipment and during causing described stope integral forward lead, described stope keeps described air intake crossheading to be communicated with the state of described intersection via stope.
Wherein, during digging up mine, described winning equipment is according to the mining mode working seam from described intersection rib to air intake crossheading side rib, thereby forms new connection intersection and the stope of air intake crossheading.
Wherein, during digging up mine, described winning equipment is according to the mining mode working seam from air intake crossheading side rib to the intersection rib, thereby forms new connection air intake crossheading and the stope of described intersection.
Wherein, one of described hydraulic support or several is stretched out described intersection.
Wherein, described ore bed is the coal seam, and described winning equipment is coal-winning machine.
Dig up mine in the open than existing elder generation, and then the ore bed that leads to the down-hole from ground carries out exploitation method, the present invention has following technique effect:
1, simple, practical;
2, reduce the labour cost of tunneling a tunnel, and reduced the Meteorological of tunnelling supporting expense and minimizing heading equipment;
3, owing to no longer stay the curtain wall of establishing between pit mining 20 and the strip mining transformation 10, therefore can improve by a relatively large margin the ore resources rate of recovery;
4, owing to adopt forced ventilation mode from mine air inlet system, air intake crossheading, stope to open-air boundary, be conducive to firedamp drainage and other pernicious gases.
The L-type exploitation method of dew well connection of the present invention being adopted below in conjunction with accompanying drawing is described in detail.
Description of drawings
Fig. 1 shows that the dew well of prior art joins the schematic diagram of the exploitation method of adopting;
Fig. 1 a be prior art change the layout schematic diagram of the stope of well worker mining and air intake lane, return airway over to from surface mining;
Fig. 2 is the top view that carries out well worker mining by the layout shown in Fig. 1 a;
Fig. 2 a is the sectional view along A-A among Fig. 2;
Fig. 2 b is the sectional view along B-B among Fig. 2;
Fig. 3 shows that dew well of the present invention joins the schematic diagram of the exploitation method of adopting;
Fig. 3 a of the present inventionly changes the stope of well worker mining and the layout schematic diagram in air intake lane over to from surface mining;
Fig. 4 is the top view that carries out well worker mining by the layout of Fig. 3 a;
Fig. 4 a is the sectional view along A-A among Fig. 4;
Fig. 4 b is the sectional view along B-B among Fig. 4;
The open-air limit of description of reference numerals: 1-side; The open-air boundary of 10-; At the bottom of the 10a-opencut; The 10b-intersection; The 11-bank of ore; 11a-edge ore bed; The 2-stope; The 20-pit mining; 3-air intake crossheading; The 4-air return way; The 5-curtain wall; The 6-winning equipment; The 7-hydraulic support; The 7a-face end support; The 8-spoil.
The specific embodiment
The L-type exploitation method that dew well connection of the present invention is adopted has two important feature.The first, the mining type that existing driving is formed air intake crossheading, stope and air return way changes the mining type that only tunnels formation air intake crossheading and stope into; The second, existing air intake crossheading, stope and air return way are U-shaped layout change air intake crossheading and stope into and be L-type and arrange.
In addition, described stope and the air intake crossheading that is the L-type layout is communicated with the pressure system of ventilation of mine.
Fig. 3 has shown the exploitation method that dew well connection of the present invention is adopted.As shown in Figure 3, the present invention at first begins from the earth's surface to carry out surface mining, utilizes the ore bed of winning equipment exploitation opencut.When surface mining reaches need to carry out the degree of depth of well worker mining to bank of ore the time, from the intersection 10b of open-air boundary 10 and bank of ore, bank of ore 11 is carried out well worker long-mining.Namely, intersection 10b is the boundary of surface mining and pit mining, after surface mining finishes, begins to carry out well worker mining from intersection 10b.
Fig. 3 a has shown the stope of well worker mining and the L-type layout in air intake lane of changing over to from surface mining of the present invention; Fig. 4 has shown the mode of carrying out well worker mining by the layout of Fig. 3 a.
Pit mining method of the present invention may further comprise the steps:
Arrange air intake crossheading 3 from the other end of stope 2, make air intake crossheading 3 and stope be " L " type and arrange that this air intake crossheading 3 is to be the crossheading of stope 2 air feeds or ventilation lane;
At a series of well worker mining equipment such as stope 2 installation work face hydraulic supports 7 and winning equipments 6.
Because mine air does not circulate, the a large amount of poisonous and harmfuls and the inflammable coal gas (gas) that produce when adding exploitation, not only healthy the causing of exploitation workman in the well had a strong impact on, bring very large potential safety hazard more can for exploitation work, so pit mining require must keep good air permeability in the well.
For this reason, the L-type exploitation method that dew well connection of the present invention is adopted adopts forced ventilation, air intake crossheading 3 one ends that are " L " type layout with stope 2 communicate with stope 2, the other end is communicated with the air inlet system of whole mine, the forced distinguished and admirable air intake crossheading 3 of flowing through successively, stope 2, intersection 10b that the mine air inlet system is produced directly enter atmosphere, thereby the poisonous and harmful in the stope and inflammable gas are discharged atmosphere, avoided the healthy harm that causes to the exploitation workman; On the other hand, avoided atmosphere with open-air boundary 10a to blast in the stope that after a large amount of inflammable gases and exploitation remaining ore bed be combined and the dieseling that produces has ensured workman's health and the safety of the work of exploitation.
In winning equipment 6 mining and during causing described stope 2 according to the direction of arrow integral forward lead among Fig. 4, stope 2 should keep air intake crossheading 3 to be communicated with the state of intersection 10b via stope 2, thereby keeps the forced distinguished and admirable of mine to enter atmosphere via air intake crossheading 3, stope 2, intersection 10b.This can finish by following dual mode:
Winning equipment 6 is according to the mining mode working seam from described intersection rib to air intake crossheading side rib, thereby forms new connection intersection 10b and the stope 2 of air intake crossheading 3;
Winning equipment 6 is according to the mining mode working seam from air intake crossheading side rib to the intersection rib, thereby forms the stope 2 of new connection air intake crossheading 3 and described intersection 10b.
Fig. 4 a and Fig. 4 b have shown respectively the layout of stope 2, hydraulic support 7 and winning equipment 6.
Shown in Fig. 4 a, install to be used for the hydraulic support 7 of support works face on the stope, such as can keeping out the spoil 8 that falls from the goaf, and the winning equipment 6 that is used for mining is installed.When winning equipment 6 so that reciprocal or unidirectional mode of carrying out is carried out mining in stope 2 back and forth, stope 2 integral body are passed forward, form new stope 2, cause working surface hydraulic support 7 supports under spoil 8 slumps in the work plane of having exploited.
In addition, in order to guarantee that stope 2 and intersection 10c remain connected state, hydraulic support 7 is except being covered with whole stope, one frame or several (3 face end support 7a shown in 4) also stretch out intersection 10b, on the one hand, be used for having strengthened the supporting to stope 2 and edge ore bed 11, block stope and open-air being communicated with of boundary 10 with spoil slump after avoiding edge ore bed 11 by exploitation; On the other hand, the danger of also avoiding the slump of intersection spoil that the staff is caused.
L-type of the present invention arranges and is convenient to during well worker mining that maintenance stope 2 is communicated with air intake crossheading 3.
In addition, described ore bed of the present invention can be the coal seam, and described winning equipment 6 can be coal-winning machine.
Although above the present invention is had been described in detail, the invention is not restricted to this, the various modifications that those skilled in the art of the present technique carry out according to principle of the present invention all should be understood to fall into protection scope of the present invention.
Claims (7)
1. one kind is revealed the L-type exploitation method that the well connection is adopted, and may further comprise the steps:
Opencut is had an opencast mining of;
When surface mining reaches need to carry out the degree of depth of well worker mining to bank of ore the time, begin layered ore body is carried out well worker long-mining from the intersection of open-air boundary and layered ore body;
Bank of ore from described intersection along pit mining in (20) scope is arranged stope (2), forms the stope (2) that directly leads to described intersection;
Described stope (2) is communicated with air intake crossheading (3), arranges so that air intake crossheading (3) and stope are L-type;
At stope (2) installation work face hydraulic support (7) and winning equipment (6).
2. method according to claim 1, wherein, air pressure in described stope (2) and the air intake crossheading (3) is higher than the atmospheric pressure of described intersection, so that directly enter in the atmosphere from the distinguished and admirable described air intake crossheading (3) of flowing through, stope (2) and the described intersection of mine pressure system of ventilation.
3. method according to claim 2, wherein, in described winning equipment (6) mining and during causing described stope (2) integral forward lead, described stope (2) keeps described air intake crossheading (3) to be communicated with the state of described intersection via stope (2).
4. method according to claim 3, wherein, during digging up mine, described winning equipment (6) is according to the mining mode working seam from described intersection rib to air intake crossheading side rib, thereby forms new connection intersection (10b) and the stope (2) of air intake crossheading (3).
5. method according to claim 3, wherein, during digging up mine, described winning equipment (6) is according to the mining mode working seam from air intake crossheading side rib to described intersection rib, thereby forms new connection air intake crossheading (3) and the stope (2) of described intersection (10b).
6. according to claim 3 or 4 described methods, one or several of wherein said hydraulic support (7) is stretched out described intersection.
7. method according to claim 4, wherein said ore bed is the coal seam, and described winning equipment (6) is coal-winning machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910093004 CN102031972B (en) | 2009-09-25 | 2009-09-25 | L-shaped mining method under open-underground mining |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200910093004 CN102031972B (en) | 2009-09-25 | 2009-09-25 | L-shaped mining method under open-underground mining |
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| CN102031972A CN102031972A (en) | 2011-04-27 |
| CN102031972B true CN102031972B (en) | 2013-04-24 |
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| CN 200910093004 Expired - Fee Related CN102031972B (en) | 2009-09-25 | 2009-09-25 | L-shaped mining method under open-underground mining |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102392642A (en) * | 2011-11-02 | 2012-03-28 | 王晓利 | Method for arranging roadways on coal-pillar-free stope |
| CN104389606B (en) * | 2014-09-23 | 2015-09-09 | 海西博奥工程有限公司 | A kind of mine reduction-type based on environmental protection many well connection mining method |
| CN104975857B (en) * | 2015-05-21 | 2017-05-10 | 中国矿业大学(北京) | Full well work area section non-pillar goaf-side-drift-free coal mining method |
| CN106988746B (en) * | 2017-05-04 | 2019-01-08 | 云南华联锌铟股份有限公司 | A kind of outdoor fining mining methods of low-angle dip-lean ore body |
| CN107989617B (en) * | 2017-12-05 | 2019-03-05 | 昆明冶金高等专科学校 | A kind of strip mining transformation method of gently inclined orebody |
| CN108756887A (en) * | 2018-05-24 | 2018-11-06 | 天地科技股份有限公司 | Open pit slope thick sandstone L-type longwall top coal caving method and early-warning monitoring method |
| CN109538204B (en) * | 2019-01-04 | 2024-07-05 | 天地科技股份有限公司上海分公司 | Mechanized continuous production method for mineral aggregate |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3731976A (en) * | 1970-09-14 | 1973-05-08 | Linden Alimak Ab | Mining methods using equipment suspended from roof-mounted rails |
| US4195886A (en) * | 1977-01-24 | 1980-04-01 | Roye Henry L | Radial mining method |
| CN1162057A (en) * | 1996-04-06 | 1997-10-15 | 中国矿业大学 | L-shaped strip area working face vertical dead axle steering mode |
| CN1190693A (en) * | 1998-02-18 | 1998-08-19 | 中国矿业大学（北京校区） | All thickness coal mining method for seam misplaced coal tunnel distribution on thick seam |
| CN101338675A (en) * | 2008-08-08 | 2009-01-07 | 中煤国际工程集团沈阳设计研究院 | Open-cast side shrouded beneficial mineral open well combined mining method |
-
2009
- 2009-09-25 CN CN 200910093004 patent/CN102031972B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3731976A (en) * | 1970-09-14 | 1973-05-08 | Linden Alimak Ab | Mining methods using equipment suspended from roof-mounted rails |
| US4195886A (en) * | 1977-01-24 | 1980-04-01 | Roye Henry L | Radial mining method |
| CN1162057A (en) * | 1996-04-06 | 1997-10-15 | 中国矿业大学 | L-shaped strip area working face vertical dead axle steering mode |
| CN1190693A (en) * | 1998-02-18 | 1998-08-19 | 中国矿业大学（北京校区） | All thickness coal mining method for seam misplaced coal tunnel distribution on thick seam |
| CN101338675A (en) * | 2008-08-08 | 2009-01-07 | 中煤国际工程集团沈阳设计研究院 | Open-cast side shrouded beneficial mineral open well combined mining method |
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| CN102031972A (en) | 2011-04-27 |
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