CN107575232A - A kind of method that stripping rock is reduced during mining - Google Patents
A kind of method that stripping rock is reduced during mining Download PDFInfo
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- CN107575232A CN107575232A CN201710844443.2A CN201710844443A CN107575232A CN 107575232 A CN107575232 A CN 107575232A CN 201710844443 A CN201710844443 A CN 201710844443A CN 107575232 A CN107575232 A CN 107575232A
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Abstract
The invention belongs to mining engineering field, suitable application area reduces the method for shelling rock when being the higher dolomite of hardness, a kind of culm openpit, specially mining.It is 49 degree to determine final open-pit limit slope angle θ during exploitation first, then by step exploitated ore and barren rock is peeled off from top to bottom from earth's surface, every layer of shoulder height H is 12 meters during exploitation, bench face angle beta is 70 degree, every 23 security platforms set a cleaning platform, scope of the limit of mining without departing from final mining area is ensured, until completing the whole exploitation for adopting hole.The technique of the present invention shells rock adopt hole, it is not necessary to which more exchange device can effectively reduce rock-peeling quantity, and then reduce cost, simple to operate, positive effect.
Description
Technical field
The invention belongs to mining engineering field, suitable application area is the higher dolomite of hardness, culm openpit, is had
A kind of method that stripping rock is reduced when body is mining.
Background technology
At present during mining project, the particularly higher dolomite of hardness, culm openpit, using 45 degree
Slope angle.This slope angle directly affects the determination of Opent-pit limit stripping-to-ore ratio, to exploit the ore of bottom, it is necessary on exploitation is a large amount of
The unnecessary barren rock in portion, causes extra cost.
The content of the invention
The purpose of the present invention is the reasonable Arrangement by improving bank slope and step, makes openpit final mining area most
End edge slope angle reaches 49 degree, so as to largely reduce stripping rock.
The technical solution of invention is as follows：
A kind of method that stripping rock is reduced during mining, suitable for the higher dolomite of hardness, culm openpit.Carry out
When adopting hole design, final mining area entirety slope angle θ is set to 49 degree.Shoulder height H 12m, 70 ° of bank slope；Security platform is wide
Spend 4m.Clean berm width 12m, highway width bicycle line 10m, double fare 14m, the highway gradient 8%.Comprise the following steps that：
It is 49 degree to determine final open-pit limit slope angle θ when the 1st, exploiting first, is then opened from top to bottom by step from earth's surface
Mining stone and stripping barren rock；
Every layer of shoulder height H is 12 meters when the 2nd, exploiting, and bench face angle beta is 70 degree.
3rd, set a cleaning platform per 2-3 security platform, it is ensured that limit of mining without departing from final mining area scope, up to
The whole exploitation for adopting hole is completed, the safety platform width B is 4 meters, and it is 12 meters to clean berm width W.
The beneficial effect of invention
Adopt hole stripping rock using the technique of the present invention, it is not necessary to more exchange device can effectively reduce rock-peeling quantity, and then
Reduce cost, simple to operate, positive effect.
Brief description of the drawings
Fig. 1 is the exploitation side view that the present invention adopts hole stripping rock
θ ultimate pit slope angles in figure, β bank slopes, H shoulder heights, B safety platform widths,
W cleans berm width
Embodiment
The present invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
Embodiment 1
The southern II ore body open-air pit of the not cuprous cobalt ore of Congo's card, final mining area pit body long 480m, wide 474m, the high 6m of heap,
Sealing ring to 240 meters of bottom height, original 45 degree of slope angle, bank slope is 65 degree.
It is 49 degree by ultimate pit slope angle θ after using the turning method that the present invention introduces afterwards, bench face angle beta is 70 degree,
Shoulder height H is 12 meters, and safety platform width B is 4 meters, and it is 12 meters to clean berm width W.Producing the situation of identical ore deposit amount
Under, it is vertical that ground 1,000,000 is peeled off less.Economic benefit is obvious (referring to table 1).
Claims (1)
1. the method for stripping rock is reduced during a kind of mining, it is characterised in that comprise the following steps：
1) it is 49 degree to determine open-pit limit ultimate pit slope angle θ when exploiting first, then from earth's surface from top to bottom by step quarry
Stone and stripping barren rock；
2) every layer of shoulder height H is 12 meters when exploiting, and bench face angle beta is 70 degree；
3) set a cleaning platform per 2-3 security platform, it is ensured that limit of mining without departing from final mining area scope, until completion
The whole exploitation for adopting hole, the safety platform width B are 4 meters, and it is 12 meters to clean berm width W.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710844443.2A CN107575232A (en) | 2017-09-18 | 2017-09-18 | A kind of method that stripping rock is reduced during mining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710844443.2A CN107575232A (en) | 2017-09-18 | 2017-09-18 | A kind of method that stripping rock is reduced during mining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107575232A true CN107575232A (en) | 2018-01-12 |
Family
ID=61036247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710844443.2A Pending CN107575232A (en) | 2017-09-18 | 2017-09-18 | A kind of method that stripping rock is reduced during mining |
Country Status (1)
| Country | Link |
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| CN (1) | CN107575232A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110616722A (en) * | 2019-09-23 | 2019-12-27 | 中南大学 | Slope safety design method and device for strip mine mining boundary and storage medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2453701C1 (en) * | 2010-10-25 | 2012-06-20 | Учреждение Российской академии наук Институт проблем комплексного освоения недр Российской академии наук (УРАН ИПКОН РАН) | Method for cleaning-up of ore bed reservoirs beneath open pit bottom |
| CN102966355A (en) * | 2012-12-06 | 2013-03-13 | 马钢集团设计研究院有限责任公司 | Method for creating internal dumping conditions of strip mine |
| CN105114081A (en) * | 2015-09-29 | 2015-12-02 | 长沙有色冶金设计研究院有限公司 | Mining method of open-pit mine |
-
2017
- 2017-09-18 CN CN201710844443.2A patent/CN107575232A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2453701C1 (en) * | 2010-10-25 | 2012-06-20 | Учреждение Российской академии наук Институт проблем комплексного освоения недр Российской академии наук (УРАН ИПКОН РАН) | Method for cleaning-up of ore bed reservoirs beneath open pit bottom |
| CN102966355A (en) * | 2012-12-06 | 2013-03-13 | 马钢集团设计研究院有限责任公司 | Method for creating internal dumping conditions of strip mine |
| CN105114081A (en) * | 2015-09-29 | 2015-12-02 | 长沙有色冶金设计研究院有限公司 | Mining method of open-pit mine |
Non-Patent Citations (2)
| Title |
|---|
| 刘志中等: "基于3DMine软件的承德某超贫磁铁矿境界优化研究", 《中国矿业科技文汇-2014》 * |
| 黄炳林: "乌龙泉石灰石矿西区开采境界方案优化研究", 《中国优秀硕士学位论文全文数据库工程科技Ⅰ辑》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110616722A (en) * | 2019-09-23 | 2019-12-27 | 中南大学 | Slope safety design method and device for strip mine mining boundary and storage medium |
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Application publication date: 20180112 |