CN109162748B - Ventilating structure of thick and large ore body by adopting natural caving method - Google Patents
Ventilating structure of thick and large ore body by adopting natural caving method Download PDFInfo
- Publication number
- CN109162748B CN109162748B CN201811220295.8A CN201811220295A CN109162748B CN 109162748 B CN109162748 B CN 109162748B CN 201811220295 A CN201811220295 A CN 201811220295A CN 109162748 B CN109162748 B CN 109162748B
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- thick
- return air
- ore body
- ore
- caving method
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000009423 ventilation Methods 0.000 claims abstract description 33
- 238000007664 blowing Methods 0.000 claims abstract description 9
- 238000007599 discharging Methods 0.000 claims abstract description 9
- 210000003462 vein Anatomy 0.000 claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/006—Ventilation at the working face of galleries or tunnels
Abstract
The invention discloses a ventilation structure of a thick and large ore body by adopting a natural caving method, which comprises an ore body, two vein-along roadways respectively arranged at two ends of the ore body and an ore-discharging roadway connected between the two vein-along roadways, wherein at least two return air patios are arranged in veins of each ore-discharging roadway, and a blowing device is arranged at a bottom port of each return air patio so as to adjust the return air quantity.
Description
Technical Field
The invention relates to the field of metal mining, in particular to a ventilation structure of a thick and large ore body by adopting a natural caving method.
Background
The mine adopting the natural caving method is characterized in that stopes are generally arranged on two sides of the ore drawing tunnel, ore drawing equipment can work in the ore drawing tunnel, and therefore the air quantity and distribution of fresh air flow of the ore drawing tunnel have important influence on ventilation conditions of the stopes.
At present, the wind path of the ore drawing tunnel of a thick and large ore body by adopting a natural caving method is too long, so that the polluted wind is connected in series, and the working environment in a stope is poor.
The above information disclosed in the background section is only for enhancement of understanding of the background of the invention.
Disclosure of Invention
It is a primary object of the present invention to overcome at least one of the above-mentioned drawbacks of the prior art and to provide a ventilation structure for thick and large ore bodies using a natural caving method, thereby improving the problem of poor working environment of stopes.
In order to achieve the aim of the invention, the invention adopts the following technical scheme:
according to one aspect of the invention, a ventilation structure of a thick and large ore body adopting a natural caving method is provided, and the ventilation structure comprises an ore body, two vein-following roadways respectively arranged at two ends of the ore body, and an ore-discharging roadway connected between the two vein-following roadways, wherein at least two return air courtyards are arranged in each vein of the ore-discharging roadways, and a blowing device is arranged at a bottom port of each return air courtyard so as to regulate the return air quantity.
According to an embodiment of the present invention, the ventilation structure of the thick and large ore body adopting the natural caving method further comprises an air volume sensor and a controller, wherein the controller is electrically connected with the air volume sensor and the air blowing device respectively.
According to an embodiment of the invention, the blower is an axial fan or a centrifugal fan.
According to an embodiment of the invention, the ventilation structure of the thick and large ore body adopting the natural caving method further comprises a return air tunnel communicated with the return air courtyard.
According to one embodiment of the invention, the end face of the return air courtyard is circular, and the diameter of the end face is 2.5m.
According to one embodiment of the invention, the height of the return air courtyard is 20m.
According to one embodiment of the invention, a chamber is formed by inwards recessing the side wall of the bottom of the return air courtyard, and the air blowing device is arranged in the chamber.
According to an embodiment of the present invention, the ventilation structure of the thick and large ore body using the natural caving method further includes stopes disposed at both sides of the ore drawing tunnel.
According to an embodiment of the invention, the ventilation structure further comprises a drop shaft located in the ore vein, and the drop shaft is arranged on the ore-drawing roadway.
According to the technical scheme, the ventilation structure of the thick and large ore body adopting the natural caving method has the advantages and positive effects that: the ventilation structure of the thick and large ore body adopting the natural caving method can shorten the length of the air path in the ore body and can effectively avoid the occurrence of the condition of series connection of polluted air. Furthermore, the air quantity of each return air courtyard can be effectively regulated by the air blowing device according to the air quantity requirement of each area, so that the ventilation condition of a stope is effectively improved, and the production cost is reduced.
Drawings
Various objects, features and advantages of the present invention will become more apparent from the following detailed description of the preferred embodiments of the invention, when taken in conjunction with the accompanying drawings. The drawings are merely exemplary illustrations of the invention and are not necessarily drawn to scale. In the drawings, like reference numerals refer to the same or similar parts throughout. Wherein:
fig. 1 is a top view showing a ventilation structure of a thick and large ore body using a natural caving method according to an exemplary embodiment.
Fig. 2 is a cross-sectional view A-A of the ventilation structure of the thick large ore body of fig. 1 using the natural caving method.
Wherein reference numerals are as follows:
101. along the vein roadway; 102. A mine outlet roadway;
103. a drop shaft; x, fresh wind flow;
w, a sewage flow; 106. Return air courtyard;
107. a blower device; 108. A return air tunnel;
109. stope; 110. And (5) returning air connecting channels.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus detailed descriptions thereof will be omitted.
Fig. 1 is a top view showing a ventilation structure of a thick and large ore body using a natural caving method according to an exemplary embodiment.
Fig. 2 is a cross-sectional view A-A of the ventilation structure of the thick large ore body of fig. 1 using the natural caving method.
Referring to fig. 1 and 2, according to another aspect of the present invention, there is provided a ventilation structure of a thick and large ore body using a natural caving method, which may include an ore body, two vein-following lanes 101 respectively arranged at both ends of the ore body, and an ore-discharging lane 102 connected between the two vein-following lanes 101, at least two return air patios 106 may be arranged in veins of each ore-discharging lane 102, and a blowing device 107 may be arranged at a bottom port of each return air patio 106 to adjust a return air volume, which may shorten a length of an air path in the ore body, and may effectively prevent occurrence of a condition that a polluted air is serially connected. Further, the air blower 107 can effectively adjust the air volume of each return air courtyard 106 according to the air volume requirement of each area, and effectively improve the ventilation condition of the stope, so that the production cost can be effectively reduced.
With continued reference to fig. 1 and 2, in accordance with an embodiment of the present invention, the ventilation structure of a thick and large ore body employing a natural caving method may further include stopes 109, and the stopes 109 may be disposed at both sides of the ore drawing tunnel 102.
With continued reference to fig. 1 and 2, in accordance with an embodiment of the present invention, the ventilation structure of the thick and large ore body employing the natural caving method may further include an air volume sensor and a controller, which may be electrically connected to the air volume sensor and the blower 107, respectively. The air quantity sensor can be used for detecting the air quantity of the return air courtyard 106 and transmitting detection information to the controller, and the controller can adjust the blast quantity of the blast device 107 according to the actual demand of the air quantity, and even can start or stop the blast device 107 so as to enable the blast quantity to be matched with the actual demand. According to a specific embodiment of the present invention, the wind speed sensor may be replaced by a wind speed sensor according to actual requirements, which is within the scope of the present invention. The air blowing device 107 arranged in the way can simply, quickly and efficiently adjust the air quantity of the return air court 106 in the same ore drawing tunnel 102 and each return air court 106 between different ore drawing tunnels 102 according to production requirements, so that the mutual influence between stopes is reduced, and the ventilation condition of the stopes can be obviously improved. On the other hand, since the blower 107 can be adjusted according to actual needs, unnecessary waste of energy can be avoided and production cost can be reduced.
With continued reference to fig. 1 and 2, in accordance with an embodiment of the present invention, the ventilation structure of a thick and large ore body employing the natural caving method may further include a return air tunnel 108 communicating with the return air patio 106, wherein fresh air flow X may enter from the vein-following tunnel 101, be distributed into the return air patio 106 as needed after being regulated by the return air patio 106, and thus form a dirty air flow W to be introduced into the return air tunnel 108, wherein the direction of the air flow may refer to the direction of the illustrated arrow.
With continued reference to fig. 1 and 2, according to an embodiment of the present invention, the blower 107 may be an axial fan or a centrifugal fan according to actual needs, but the present invention is not limited thereto. According to an embodiment of the present invention, an axial flow fan may be selected for a ventilation structure in which the ventilation amount demand is large.
With continued reference to fig. 1 and 2, in accordance with an embodiment of the present invention, the side walls of the bottom of return air courtyard 106 may be recessed inwardly to form a chamber within which a blower 107 may be positioned. According to an embodiment of the present invention, a return air connection channel 110 may be disposed at the bottom of the return air courtyard 106, and the blower 107 may be disposed on the return air connection channel 110.
According to one embodiment of the present invention, the end face of return air courtyard 106 may be circular and the end face diameter may be sized to be 2.5m. According to an embodiment of the present invention, the return air courtyard 106 has a height of 20m.
With continued reference to fig. 1 and 2, according to an embodiment of the present invention, the ventilation structure further includes a drop shaft 103 located in the vein of the ore body, and the drop shaft 103 may be disposed on the ore drawing tunnel 102, and referring to fig. 1, the drop shaft 103 may be disposed on a left side or a right side of a center line of the ore drawing tunnel 102 so as to avoid obstructing the travel of the ore drawing apparatus.
The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the above description, numerous specific details are provided to give a thorough understanding of embodiments of the invention. One skilled in the relevant art will recognize, however, that the inventive aspects may be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring aspects of the invention.
Claims (6)
1. A ventilation structure of a thick and large ore body using a natural caving method, comprising:
a ore body;
two vein-following roadways which are respectively arranged at two ends of the ore body;
the ore discharging tunnels are connected between the two vein-along tunnels, at least two return air courtyards are arranged in each vein of the ore discharging tunnels, and an air blast device is arranged at the bottom port of each return air courtyard so as to adjust the return air quantity; the side wall of the bottom of the return air courtyard is inwards recessed to form a chamber, and the air blowing device is arranged in the chamber;
the stopes are arranged on two sides of the ore drawing roadway;
the drop shaft is positioned in the ore body vein, and the drop shaft is arranged on the ore discharging roadway.
2. The ventilation structure of a thick and large ore body adopting a natural caving method according to claim 1, wherein the ventilation structure of a thick and large ore body adopting a natural caving method further comprises an air quantity sensor and a controller, and the controller is electrically connected with the air quantity sensor and the air blowing device respectively.
3. A thick ore body ventilating structure using natural caving method as claimed in claim 1, wherein the blower is an axial fan or a centrifugal fan.
4. The ventilation structure of a thick and large ore body adopting a natural caving method as claimed in claim 1, wherein the ventilation structure of a thick and large ore body adopting a natural caving method further comprises a return air tunnel communicated with the return air courtyard.
5. A ventilation structure for thick and large ore bodies by natural caving method as claimed in claim 1, wherein the end face of the return air courtyard is circular, and the diameter of the end face is 2.5m.
6. A ventilation structure for thick and large ore bodies according to claim 1, characterized in that the height of the return air courtyard is 20m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811220295.8A CN109162748B (en) | 2018-10-19 | 2018-10-19 | Ventilating structure of thick and large ore body by adopting natural caving method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811220295.8A CN109162748B (en) | 2018-10-19 | 2018-10-19 | Ventilating structure of thick and large ore body by adopting natural caving method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109162748A CN109162748A (en) | 2019-01-08 |
| CN109162748B true CN109162748B (en) | 2024-01-23 |
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| CN201811220295.8A Active CN109162748B (en) | 2018-10-19 | 2018-10-19 | Ventilating structure of thick and large ore body by adopting natural caving method |
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| CN (1) | CN109162748B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2310751C1 (en) * | 2006-03-22 | 2007-11-20 | Институт угля и углехимии Сибирского отделения Российской Академии Наук (ИУУ СО РАН) | Method for thick steeply inclined coal seam development |
| CN101864957A (en) * | 2010-05-25 | 2010-10-20 | 广西大学 | Great ore drawing simultaneous filling non-top column shrinkage mining method |
| CN103982184A (en) * | 2014-06-10 | 2014-08-13 | 山东黄金矿业(莱州)有限公司三山岛金矿 | Falling ore directional slip control method adopting underground mine bottom-pillar-free caving mining method |
| CN104707846A (en) * | 2015-03-11 | 2015-06-17 | 广东安元矿业勘察设计有限公司 | Method for solving urban refuse landfill through building material resource development |
| CN108590659A (en) * | 2018-04-13 | 2018-09-28 | 武汉理工大学 | Rock drilling layering falls mine shrinkage mining method in a kind of arteries and veins |
| CN108625856A (en) * | 2018-06-11 | 2018-10-09 | 安徽大昌矿业集团有限公司 | A kind of mining methods in the two neighboring one ore removal lane of stope of underground mine |
-
2018
- 2018-10-19 CN CN201811220295.8A patent/CN109162748B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2310751C1 (en) * | 2006-03-22 | 2007-11-20 | Институт угля и углехимии Сибирского отделения Российской Академии Наук (ИУУ СО РАН) | Method for thick steeply inclined coal seam development |
| CN101864957A (en) * | 2010-05-25 | 2010-10-20 | 广西大学 | Great ore drawing simultaneous filling non-top column shrinkage mining method |
| CN103982184A (en) * | 2014-06-10 | 2014-08-13 | 山东黄金矿业(莱州)有限公司三山岛金矿 | Falling ore directional slip control method adopting underground mine bottom-pillar-free caving mining method |
| CN104707846A (en) * | 2015-03-11 | 2015-06-17 | 广东安元矿业勘察设计有限公司 | Method for solving urban refuse landfill through building material resource development |
| CN108590659A (en) * | 2018-04-13 | 2018-09-28 | 武汉理工大学 | Rock drilling layering falls mine shrinkage mining method in a kind of arteries and veins |
| CN108625856A (en) * | 2018-06-11 | 2018-10-09 | 安徽大昌矿业集团有限公司 | A kind of mining methods in the two neighboring one ore removal lane of stope of underground mine |
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| CN109162748A (en) | 2019-01-08 |
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