CN112065402B - Construction method of pedestrian conveying channel in mining stope - Google Patents
Construction method of pedestrian conveying channel in mining stope Download PDFInfo
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- CN112065402B CN112065402B CN202010889730.7A CN202010889730A CN112065402B CN 112065402 B CN112065402 B CN 112065402B CN 202010889730 A CN202010889730 A CN 202010889730A CN 112065402 B CN112065402 B CN 112065402B
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- 238000010276 construction Methods 0.000 title claims abstract description 39
- 238000005065 mining Methods 0.000 title description 18
- 238000005422 blasting Methods 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 18
- 239000011435 rock Substances 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims description 25
- 239000010878 waste rock Substances 0.000 claims 1
- 239000004575 stone Substances 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 4
- 239000004744 fabric Substances 0.000 abstract 1
- 230000006378 damage Effects 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/006—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries by making use of blasting methods
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
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Abstract
The invention relates to a construction method of a pedestrian conveying channel in a mine stope, which comprises the following steps: a. extending and arranging a concrete bottom in a bottom roadway below the ore block towards the outer side of the ore block; b. arranging a first chute mouth matched with the first chute in the concrete bottom; c. before blasting layer by layer from the bottom of the ore block each time, surrounding rocks are caved from the bottoms of two sides of the ore block to form a pedestrian conveying channel, wherein the first drop shaft is positioned at the bottom of the pedestrian conveying channel. Therefore, before blasting each layer of ore block, the bottom surrounding rocks on the two sides of the ore block can be blasted firstly so as to enable the two sides of the ore block to gradually form the pedestrian conveying channel, namely, a method of construction while stoping is adopted, so that the safety problem caused by the fact that the broken stones on the walls of the pedestrian conveying channel drop in the stoping process can be effectively avoided, and the maintenance cost of the pedestrian conveying channel is reduced. In addition, the concrete bottom cloth is arranged outside the side edge of the ore block, and the falling objects of the pedestrian conveying channel can be prevented from directly falling to the bottom roadway.
Description
Technical Field
The disclosure relates to the technical field of mining, in particular to a construction method of a pedestrian conveying channel in a mining stope.
Background
In the traditional mine, a stope pedestrian conveying channel is generally constructed before formal stoping after stope formation and is used as a stope pedestrian conveying or ventilation safety channel, and stoping operation can be carried out after channel construction is finished. Under the general condition, the pedestrian fortune material passageway of accomplishing of being under construction receives the influence of back production in-process blasting vibrations or the country rock steadiness is relatively poor, and it drops to take place pedestrian fortune material passageway group wall rubble more generally, not only makes pedestrian fortune material process have the potential safety hazard, has still increased the maintenance cost of pedestrian fortune material passageway moreover. In addition, if the pedestrian conveying channel collapses in a large area, the whole stope cannot normally stope, and mineral resources are lost.
Disclosure of Invention
The purpose of the present disclosure is to provide a construction method of pedestrian transportation channel in mining site, so as to at least partially solve the problems existing in the related art.
In order to achieve the above object, the present disclosure provides a construction method of a pedestrian transportation channel in a mine stope, including the steps of:
a. extending and arranging a concrete bottom in a bottom roadway below the ore block towards the outer side of the ore block;
b. arranging a first chute in the concrete bottom for matching with the first chute;
c. before blasting layer by layer from the bottom of the ore block each time, the surrounding rock is caved from the bottoms of the two sides of the ore block to form a pedestrian material conveying channel,
wherein the first orepass is located at the bottom of the pedestrian conveyor shaft.
Optionally, the pedestrian conveying channel comprises a first channel close to the side edge of the mineral block and a second channel away from the side edge of the mineral block, and in step b, the first chute is arranged at the bottom of the second channel.
Optionally, in step c, before each blast, a ceiling inclined towards said first chute is supported at the level of the ceiling of the walkway.
Optionally, in step b, a second chute for cooperating with a second chute is arranged in the concrete bottom, wherein the second chute is located at the bottom of the first channel.
Optionally, in step c, after each blast, a platform for the operation of the constructor is arranged in the pedestrian transportation channel.
Optionally, in step c, after each blast, a cover plate is arranged on top of the pedestrian conveyor.
Optionally, in step c, the cover plate above the pedestrian conveyor is removed before each blast.
Optionally, in step c, the construction is alternated on both sides of the block.
Optionally, in step c, the construction height of the pedestrian transportation channel is controlled to be 1-2 m.
Optionally, before step a, constructing the outer boundary of the bottom of the ore block outward for 4-6 m.
Through above-mentioned technical scheme, the ore block adopts the successive layer blasting, before blasting every layer of ore block, can blast so that the both sides of ore block form pedestrian's fortune material passageway progressively earlier to the bottom country rock of ore block both sides. Namely, the pedestrian material conveying channel is formed by adopting a method of stoping and constructing at the same time, so that the safety problem caused by the falling of wall broken stones in the pedestrian material conveying channel in the stoping process can be effectively avoided, the maintenance cost of the pedestrian material conveying channel is reduced, the large-area collapse of the pedestrian material conveying channel caused by blasting vibration or poor surrounding rock stability in the stoping process can be avoided, and the stoping efficiency is improved. In addition, put the concrete backer to the side of ore block outside, can also avoid the pedestrian to transport the thing that drops of material passageway and directly fall the bottom tunnel and cause the injury to constructor, constructor's safety in the protection bottom tunnel improves operation factor of safety, can also avoid blockking up the bottom tunnel simultaneously, reduces constructor's the amount of labour, sparingly clears up the time in bottom tunnel, improves work efficiency.
Additional features and advantages of the disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:
fig. 1 is a method of construction of a pedestrian feed passageway in a mine stope according to one embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a stope space in the mining process in the construction method of the pedestrian transportation channel of the mining stope according to one embodiment of the disclosure;
fig. 3 is a partially enlarged view of a portion a in fig. 2;
fig. 4 is a partial structural schematic diagram of a stope space in the mining process in the construction method of the pedestrian transportation channel of the mining stope according to another embodiment of the disclosure.
Description of the reference numerals
10-ore block; 20-bottom roadway; 21-a first operating space; 22-ore drawing space; 23-a second operating space; 30-concrete bottom; 41-first draw shaft; 42-second pass; 43-third orepass; 50-a pedestrian transportation channel; 51-a first channel; 52-a second channel; 60-central patio.
Detailed Description
The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.
In the present disclosure, the use of directional words such as "up" and "down" refers to the up and down of the actual orientation of the stope, without going to the contrary, and in particular, refer to the direction of the drawing of fig. 2. Furthermore, the terms "first," "second," and the like, as used in this disclosure, are intended to distinguish one element from another, and not necessarily for order or importance. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated.
In mining, referring to fig. 2, a vertical central raise 60 is first opened from the middle of the ore block 10 for ventilation and serving as a transportation channel, and a bottom roadway 20 is opened at the bottom of the ore block 10 for transporting the collapsed ore after mining. The method provided by the disclosure is applied to the central raise 60 opened on the ore block 10, and after the bottom roadway 20 is formed at the bottom of the ore block 10, namely after the preparation work for mining is finished.
Referring to fig. 1, the construction method of the pedestrian transportation channel in the mining stope provided by the present disclosure includes the following steps:
a. the concrete bottom 30 in the bottom drive 20 below the block 10 is arranged extending towards the outside of the block 10, see fig. 3 and 4. After the preparation work for mining is completed, a concrete bottom 30 may be arranged in the bottom roadway 20 below the ore block 10, an ore drawing space 22 is formed below the concrete bottom 30, and a first operation space 21 is formed between the concrete bottom 30 and the ore block 10, see fig. 2. The concrete bottom 30 can be stably pressed, the ore drawing space 22 is used as a channel for transporting ore after mining, and the first operation space 21 is used as an activity area of constructors before primary blasting. The step a can be completed synchronously with the construction and arrangement of the concrete bottom 30 in the bottom roadway 20, that is, when the concrete bottom 30 is arranged in the bottom roadway 20, the concrete bottom 30 can be directly arranged at a certain distance from the outer side of the ore block 10, so that the end part of the concrete bottom 30 is positioned outside the side edge of the ore block 10.
b. A first chute is arranged in the concrete bottom 30 for cooperation with a first chute 41, see fig. 3 and 4. Wherein the step b refers to arranging a first chute in the extension of the concrete bottom 30 so that ore or crushed stone corresponding to the upper part of the extension can fall into the first chute 41.
c. Before blasting layer by layer from the bottom of the block 10 at a time, the surrounding rock is caved from the bottom of both sides of the block 10 to form a pedestrian transportation channel 50, see fig. 2. In general, when mining the block 10, blasting layer by layer is performed from the bottom of the block 10, and step c is a construction operation performed before blasting each layer of the block 10, that is, the pedestrian transportation passage 50 is formed by a construction method while mining. Specifically, when blasting first layer ore block 10, can blast the both sides of first layer ore block 10 earlier in order to form pedestrian's fortune material passageway 50, then blast the ore deposit to the mid portion of first layer ore block 10 again, blast second layer ore block 10 again after first layer ore block 10 is all blasted and finishes, the blasting process is the same with first layer ore block 10, and so on, until whole ore block 10 finishes that all fall the ore deposit, pedestrian's fortune material passageway 50 of ore block 10 both sides was also under construction this moment, and communicate with the top of ore block 10, in order to be used for the ventilation and can regard as constructor's working channel and fortune material passageway. It should be noted that the pedestrian transportation channel 50 in the present disclosure is a pedestrian crossroad, and the construction of the pedestrian transportation channel 50 may include the caving of the surrounding rock on both sides of the ore block 10 and the caving of the ore blocks 10 on both sides.
Referring to fig. 3 and 4, the first chute 41 may be located at the bottom of the pedestrian conveyor 50. That is, in step b, the first chute openings may be arranged at positions corresponding to both sides of the ore block 10 of the concrete bottom 30, so that ore falling down during construction of the pedestrian transportation channel 50 or broken stone falling from surrounding rocks at ordinary times may enter the first chute 41, and it is ensured that the pedestrian transportation channel 50 is not blocked.
Through the technical scheme, the ore blocks 10 are blasted layer by layer, and before each layer of the ore blocks 10 is blasted, the bottom surrounding rocks at two sides of the ore blocks 10 can be blasted firstly so that the two sides of the ore blocks 10 gradually form the pedestrian material conveying channel 50. Namely, the pedestrian transportation channel 50 is formed by adopting a method of stoping and construction, so that the safety problem caused by the falling of the broken stones on the wall of the constructed pedestrian transportation channel 50 in the stoping process can be effectively avoided, the maintenance cost of the pedestrian transportation channel 50 is reduced, meanwhile, the large-area collapse of the pedestrian transportation channel 50 caused by blasting vibration or poor surrounding rock stability in the stoping process can be avoided, and the stoping efficiency is improved. In addition, arrange the concrete end 30 outside the side of ore block 10, can also avoid pedestrian's fortune material passageway 50 the thing that drops to directly drop bottom tunnel 20 and cause the injury to constructor, constructor's safety in the protection bottom tunnel 20 improves operation factor of safety, can also avoid blockking up bottom tunnel 20 simultaneously, reduces constructor's the amount of labour, sparingly clears up the time in bottom tunnel 20, improves work efficiency.
According to some embodiments, referring to fig. 3 and 4, the pedestrian walkway 50 may include a first walkway 51 near a side of the block 10 and a second walkway 52 away from the side of the block 10, the first walkway 51 may be a ladder booth erected with ladders for construction personnel to climb, and the second walkway 52 may serve as a walkway. Wherein, in step b, the first chute may be arranged at the bottom of the second channel 52. On one hand, the second channel 52 is a material conveying channel, so that objects falling in the material conveying process can directly fall into the first chute 41; on the other hand, potential safety hazards to the constructors in the first passage 51 can also be avoided. As an embodiment, referring to fig. 3, a third chute 43 may also be disposed at a position close to the pedestrian conveying passageway 50, so that ore can further enter the third chute 43 when the pedestrian conveying passageway 50 is constructed, ore entering the first chute 41 is correspondingly reduced, and blocking of the pedestrian conveying passageway 50 is further avoided.
Here, in order to further ensure that the blasted ore of the pedestrian conveyor 50 can enter the first chute 41 and avoid the blockage of the pedestrian conveyor 50, in particular the first chute 51 described above, by the falling ore, in step c, a ceiling inclined towards the first chute 41 can be supported at the ceiling position of the pedestrian conveyor 50 before each blasting, so that the whole pedestrian conveyor 50, in particular the ore falling above the first chute 51, can fall to the ceiling and slide along the ceiling into the first chute 41. Wherein the height of the support can not exceed 1-2 m.
As an embodiment, referring to fig. 4, in step b, a second chute for cooperating with the second chute 42 may also be arranged in the concrete bottom 30, wherein the second chute 42 may be located at the bottom of the first passage 51, i.e. so that the pedestrian conveyor passage 50 has a double chute. In this way, the dropped objects above the first chute 51 can be directly dropped into the second chute 42, and the above-described steps for supporting the inclined ceiling can be reduced. The second chute 42 can be supported upwards by a wood crib, and the supporting height of the second chute 42 can be 0.2-0.3 m. The second chute 42 is located below the first passage 51, the second chute 42 can be used for storing waste rocks generated when the pedestrian conveying passage 50 is likely to collapse due to blasting vibration, and in order to avoid influencing the operation of constructors in the first passage 51, the waste rocks stored in the second chute 42 can be discharged to the ore discharge space 22 through the second chute in time so as to be conveyed out. In addition, a cover plate may be provided above the second orepass 42 so as to prevent a person from falling. Simultaneously, when the strut at pedestrian fortune material passageway 50 top takes place to collapse because of the blasting, the thing that drops can directly drop above the apron, and the constructor of being convenient for clears up, improves work efficiency to the apron also can indirectly protect second drop shaft 42, avoids the thing that drops to cause the damage to second drop shaft 42.
According to some embodiments, a platform for the constructor to work on may be arranged in the pedestrian transportation corridor 50 after each blast in step c. That is, at every turn the blasting forms pedestrian fortune material passageway 50 after, can arrange the platform that is used for supplying the constructor operation in pedestrian fortune material passageway 50 of corresponding height, specifically, can set up corresponding platform at certain height in pedestrian fortune material passageway 50 to be convenient for constructor to the top board rock drilling powder charge blasting of pedestrian fortune material passageway 50 and erect the pedestrian ladder.
According to some embodiments, at step c, after each blast, a cover plate may be placed on top of the pedestrian conveyor 50. That is, after the pedestrian transportation path 50 is formed, the cover plate 50 may be disposed at a position of the pedestrian transportation path 50 at the same height as the stope to prevent a person from falling or the pedestrian transportation path 50 from being blocked during construction. The thickness of the cover plate may be, for example, 5cm.
In step c, before each blasting, the cover plate above the pedestrian transportation channel 50 may be removed, so that ore falling off during the blasting of the top plate of the pedestrian transportation channel 50 may enter the first chute 41 at the bottom of the pedestrian transportation channel 50.
According to some embodiments, in step c, alternate constructions may be performed on both sides of the block 10. That is, when blasting each layer of the block 10, it is possible to construct one side of the block 10 first and then the other side of the block 10, so that the pedestrian transportation channels 50 on both sides of the block 10 can be completed simultaneously while avoiding the above-mentioned problem of the pedestrian transportation channel 50 on either side.
Here, in the step c, when the pedestrian transportation passageway 50 is constructed, the construction height of the pedestrian transportation passageway 50 may be controlled to be 1 to 2m, that is, the construction height of the pedestrian transportation passageway 50 may be about 1 to 2m higher than the roof of the stope. Here, it should be noted that the stope roof refers to the lower surface of the unblasted nugget 10.
According to some embodiments, before step a, the outer boundary of the bottom of the block 10 may be worked outwards by a certain length, which may be, for example, 4 to 6m. Specifically, after the boundary division of the block 10 is completed, the cutting and mining construction process may expand the outer boundary of the bottom of the block 10 by a certain length to be able to construct the concrete bottom 30 extending beyond the side edges of the block 10 at the portion.
Further, referring to fig. 3 and 4, a second operating space 23 may be formed above the concrete bottom 30 extending beyond the lateral sides of the ore block 10, and the second operating space 23 may communicate with the ore drawing space 22. Wherein, a channel for communicating the ore drawing space 22 with the second operation space 23 is formed between the end of the concrete bottom 30 and the expanded ore block boundary, and a pedestrian ladder for construction personnel to climb can be erected in the channel. The second operating space 23 can be used as a cleaning operating space for constructors when collapse is possible to occur after blasting of the pedestrian conveying channel 50, and meanwhile, the second operating space 23 can be used as a construction personnel moving space for communicating the ore drawing space 22 with the pedestrian conveying channel 50.
The height of the second operating space 23 is not limited in the embodiment of the present disclosure, and may be set correspondingly according to actual needs. For example, the second operating space 23 may have the same height as the first operating space 21, and the height may be 1.8 to 2m.
In addition, in order to facilitate the constructors to climb up and down in the pedestrian transportation channel 50, referring to fig. 4, the pedestrian transportation channel 50 (for example, the first channel 51 described above) may be provided with a plurality of pedestrian ladders from top to bottom, and adjacent pedestrian ladders may be staggered in the height direction. Simultaneously, adjacent ladder department of meeting can also be provided with the ladder platform to fixed ladder can also make constructor have a rest after climbing the top of a ladder and climb another ladder once, when constructor who ascends and descending constructor meet in addition, can pass through separately on the ladder platform.
The preferred embodiments of the present disclosure are described in detail above with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details in the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
It should be noted that, in the above embodiments, the various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations will not be further described in the present disclosure.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.
Claims (7)
1. A construction method of a pedestrian conveying channel in a mine stope is characterized by comprising the following steps:
a. arranging a concrete bottom (30) in a bottom roadway (20) below the ore block (10) in an extending way towards the outer side of the ore block (10);
b. arranging a first chute in the concrete bottom (30) for matching with a first chute (41);
c. before blasting layer by layer from the bottom of the ore block (10) each time, the surrounding rocks are caved from the bottoms of two sides of the ore block (10) to form a pedestrian material conveying channel (50),
wherein the first chute (41) is located at the bottom of the pedestrian conveyor channel (50), the pedestrian conveyor channel (50) comprises a first channel (51) close to the side of the ore block (10) and a second channel (52) away from the side of the ore block (10), in step b, the first chute is arranged at the bottom of the second channel (52), and a second chute for cooperating with a second chute (42) is arranged in the concrete bottom (30), wherein the second chute (42) is located at the bottom of the first channel (51) for storing and ore-drawing the waste rock produced by the pedestrian conveyor channel (50).
2. Construction method according to claim 1, characterised in that in step c, after each blast, a platform for the work of the constructors is arranged in the pedestrian conveyor (50).
3. Construction method according to claim 1, characterised in that in step c, after each blast, a cover plate is arranged on top of the pedestrian conveyor (50).
4. A method of construction according to claim 1, characterised in that in step c, the cover plate above the pedestrian conveyor (50) is removed before each blast.
5. The construction method according to claim 1, characterized in that in step c, the construction is alternated on both sides of the block (10).
6. The construction method according to claim 1, wherein in the step c, the construction height of the pedestrian material conveying channel (50) is controlled to be 1 to 2m.
7. The construction method according to claim 1, characterized in that before step a, the outside boundary of the bottom of the block (10) is constructed outwards for 4 to 6m.
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| CN202010889730.7A CN112065402B (en) | 2020-08-28 | 2020-08-28 | Construction method of pedestrian conveying channel in mining stope |
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| CN112065402B true CN112065402B (en) | 2023-03-31 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN207470183U (en) * | 2018-02-09 | 2018-06-08 | 内蒙古金陶股份有限公司 | A kind of ro om -character |
| CN108361041B (en) * | 2018-02-09 | 2018-12-14 | 内蒙古金陶股份有限公司 | A kind of inclination upraise construction technology |
| CN207499900U (en) * | 2018-02-09 | 2018-06-15 | 内蒙古金陶股份有限公司 | The concrete vacation bottom structure of mining with stowing |
| CN108278114A (en) * | 2018-02-09 | 2018-07-13 | 内蒙古金陶股份有限公司 | Frame-type mining methods |
| CN110685692B (en) * | 2019-11-06 | 2021-05-04 | 内蒙古金陶股份有限公司 | Frame mining method |
| CN110700834B (en) * | 2019-11-06 | 2021-04-30 | 内蒙古金陶股份有限公司 | Mining method of thin vein |
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