CN102536245A - Method for calculating bottom width and mining depth of open-pit mining for large and thick ore body - Google Patents
Method for calculating bottom width and mining depth of open-pit mining for large and thick ore body Download PDFInfo
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- CN102536245A CN102536245A CN2012100529317A CN201210052931A CN102536245A CN 102536245 A CN102536245 A CN 102536245A CN 2012100529317 A CN2012100529317 A CN 2012100529317A CN 201210052931 A CN201210052931 A CN 201210052931A CN 102536245 A CN102536245 A CN 102536245A
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Abstract
The invention discloses a method for calculating the bottom width and the mining depth of open-pit mining for a large and thick ore body. The method is characterized in that the method comprises the following steps: setting the minimum bottom width on each cross section map in the middle of the bottommost part of ore body annihilation; connecting two ends of the minimum bottom width with a ground surface according to pre-selected final slope angle; then when a pit limit stripping ratio is calculated, increasing the size of the bottom width on each cross section map in the transverse direction, wherein the increased amount is generally an integral multiple of the minimum bottom width; calculating a corresponding pit limit stripping ratio according to each bottom width; comparing the pit limit stripping ratio with an economic reasonable stripping ratio and determining the width corresponding to one pit limit stripping ratio which is smaller than the economic reasonable stripping ratio and is nearest to the economic reasonable stripping ratio as a reasonable width on the cross section map; and finally, adjusting the mining depth and the bottom width calculated on each cross section of a longitudinal section map and a geological plane and obtaining more reasonable final pit limit bottom width and mining depth.
Description
Technical field
The invention belongs to the surface mining field.Be particularly related to a kind of big thick ore body strip mining transformation bottom width and adopt dark computational methods.
Background technology
Opencut finally exploit boundary confirm be design of open pit mines with planning in crucial work, promptly be technology decision-making, also be economic decision-making.Yet confirm that it is two important links in the final boundary design of opencut deeply that opencut bottom width and opencut are adopted, whether reasonable technological rationality and the economic rationality that directly has influence on opencast mining of these two Determination of Parameters.
At present, the minimum bottom width of opencut is to calculate according to the requirement of adopting the shipment transfer device, but when running into the thicker big ore body in bottom, the bottom width of confirming by above method is just unreasonable; Confirming to adopt when dark, on each geologic cross section figure, determine some depth scheme, do comparison with pit limit stripping ratio and economical rationality stripping-to-ore ratio then; Determine adopting deeply on each geologic cross section figure then, on longitudinal plan, adjust again, determine final adopting deeply; But when confirming that adopting of thick ore body is dark, confirm, press earlier the mapping of orebody thickness rather than minimum bottom width sometimes in view of the bottom of opencut is difficult; Continue then not have downwards and peel off mining; Till minimum bottom width, when still running into the ore body that orebody thickness is especially big, shape is comparatively complicated, this definite method neither be quite reasonable.
Summary of the invention
The objective of the invention is to propose a kind of to big thick ore body strip mining transformation bottom width and adopt dark novel computational methods, the ore body that makes a certain type of occurrence calculate the strip mining transformation bottom width and adopt when dark the result more economical, more reasonable.
The concrete computational methods of the present invention are following.
(1) calculates the minimum bottom width of open pit boundary according to adopting installing requirement fully.
(2) on each drawing in side sectional elevation, minimum bottom width is placed on the bottommost middle part that ore body is annihilated, is connected with the face of land according to the final group slope angle of prior selection two ends with minimum bottom width.
When (3) calculating pit limit stripping ratio on each drawing in side sectional elevation along the size that laterally increases bottom width, the quantity of increase is generally the integral multiple of minimum bottom width.
(4) calculating corresponding pit limit stripping ratio according to each bottom width, pit limit stripping ratio is compared with the economical rationality stripping-to-ore ratio, is exactly the reasonable bottom width on this drawing in side sectional elevation less than an economical rationality stripping-to-ore ratio and an immediate corresponding width of pit limit stripping ratio.
(5) adjust with bottom width in that adopting of calculating on each cross section on longitudinal plan and the geological map is dark, draw comparatively reasonably final exploitation boundary bottom width at last and adopt deeply.
Description of drawings
Fig. 1 adopts the method sketch map of dark and bottom width for adopting calculating big thick ore body provided by the invention.
Among Fig. 1, the 1-face of land; The 2-ore body; The final side slope line of 3-design of open pit mines; 4-designs minimum bottom width; The minimum bottom width of the integral multiple that 5-laterally increases; S1, S3, S4, the rock area that increases in the boundary during the minimum bottom width of the horizontal every increase integral multiple of S6-; S2, the ore area that increases in the boundary during the minimum bottom width of the horizontal every increase integral multiple of S5-.
The specific embodiment
It is R that map 1 is established the opencast economical rationality stripping-to-ore ratio in this ore deposit, and pit limit stripping ratio is R
jMinimum bottom width is L, draws like the inner most initial exploitation boundary of Fig. 1 according to selected in advance final group slope angle and minimum bottom width earlier, laterally increase respectively then 1L, 2L, 3L ... S1, S2, S3, S4, S5, S6 when drawing every increase L; The ore gross area that the rock gross area that increases when increasing by three times minimum bottom width of S1+S3+S4+S6 then, S2+S5 increase when increasing by three times minimum bottom width draws the pit limit stripping ratio R of this moment on this drawing in side sectional elevation
j=(S1+S3+S4+S6)/(S2+S5), repeat above step, the pit limit stripping ratio R that when being increased to doubly minimum bottom width nL of n, draws
jDuring less than economical rationality stripping-to-ore ratio R and near economical rationality stripping-to-ore ratio R, the bottom width of this moment is on this drawing in side sectional elevation the most reasonably bottom width, and it deeply also is the most rational adopting.At last, adjust on longitudinal plan and geological map with bottom width adopting of drawing on each drawing in side sectional elevation is dark, draw rationally adopting deeply and bottom width of whole open pit boundary.
Claims (3)
1. a big thick ore body is had an opencast mining of bottom width and is adopted dark computational methods; When it is characterized in that calculating pit limit stripping ratio on each drawing in side sectional elevation along the size that laterally increases bottom width; Calculate corresponding pit limit stripping ratio according to each bottom width; Pit limit stripping ratio is compared with the economical rationality stripping-to-ore ratio, is exactly the reasonable bottom width on this drawing in side sectional elevation less than an economical rationality stripping-to-ore ratio and an immediate corresponding width of pit limit stripping ratio.
2. a kind of according to claim 1 big thick ore body is had an opencast mining of bottom width and is adopted dark computational methods, it is characterized in that on each drawing in side sectional elevation, minimum bottom width being placed on the bottommost middle part that ore body is annihilated.
3. a kind of according to claim 1 big thick ore body is had an opencast mining of bottom width and is adopted dark computational methods, and when it is characterized in that the edge laterally increases bottom width, the quantity of increase is generally the integral multiple of minimum bottom width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100529317A CN102536245A (en) | 2012-03-02 | 2012-03-02 | Method for calculating bottom width and mining depth of open-pit mining for large and thick ore body |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012100529317A CN102536245A (en) | 2012-03-02 | 2012-03-02 | Method for calculating bottom width and mining depth of open-pit mining for large and thick ore body |
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| CN102536245A true CN102536245A (en) | 2012-07-04 |
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| CN2012100529317A Pending CN102536245A (en) | 2012-03-02 | 2012-03-02 | Method for calculating bottom width and mining depth of open-pit mining for large and thick ore body |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104612689A (en) * | 2015-01-20 | 2015-05-13 | 辽宁工程技术大学 | Method for optimizing mining boundaries of underlying seams of strip mines |
| CN105275471A (en) * | 2015-11-09 | 2016-01-27 | 安徽马钢工程技术集团有限公司 | Method for determining surface mine exploiting limit |
| CN105507904A (en) * | 2016-01-15 | 2016-04-20 | 长沙有色冶金设计研究院有限公司 | Strip mine foundation pit production method |
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| SU1017800A1 (en) * | 1974-07-08 | 1983-05-15 | Институт горного дела | Method of airing mine pits |
| CN1598857A (en) * | 2004-09-21 | 2005-03-23 | 北京科技大学 | Method for optimizing slope of open-pit mine |
| CN1601054A (en) * | 2004-10-10 | 2005-03-30 | 北京科技大学 | Method for intensified mining deep-dished strip mine |
| US20100201829A1 (en) * | 2009-02-09 | 2010-08-12 | Andrzej Skoskiewicz | Camera aiming using an electronic positioning system for the target |
| CN102287189A (en) * | 2011-04-24 | 2011-12-21 | 中钢集团马鞍山矿山研究院有限公司 | Method for determining reasonable boundary for converting strip mining into underground mining for mine |
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2012
- 2012-03-02 CN CN2012100529317A patent/CN102536245A/en active Pending
Patent Citations (5)
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|---|---|---|---|---|
| SU1017800A1 (en) * | 1974-07-08 | 1983-05-15 | Институт горного дела | Method of airing mine pits |
| CN1598857A (en) * | 2004-09-21 | 2005-03-23 | 北京科技大学 | Method for optimizing slope of open-pit mine |
| CN1601054A (en) * | 2004-10-10 | 2005-03-30 | 北京科技大学 | Method for intensified mining deep-dished strip mine |
| US20100201829A1 (en) * | 2009-02-09 | 2010-08-12 | Andrzej Skoskiewicz | Camera aiming using an electronic positioning system for the target |
| CN102287189A (en) * | 2011-04-24 | 2011-12-21 | 中钢集团马鞍山矿山研究院有限公司 | Method for determining reasonable boundary for converting strip mining into underground mining for mine |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104612689A (en) * | 2015-01-20 | 2015-05-13 | 辽宁工程技术大学 | Method for optimizing mining boundaries of underlying seams of strip mines |
| CN104612689B (en) * | 2015-01-20 | 2016-08-24 | 辽宁工程技术大学 | A kind of optimization method of opencut underlying seam open-pit limit |
| CN105275471A (en) * | 2015-11-09 | 2016-01-27 | 安徽马钢工程技术集团有限公司 | Method for determining surface mine exploiting limit |
| CN105275471B (en) * | 2015-11-09 | 2017-11-21 | 安徽马钢工程技术集团有限公司 | A kind of method for determining surface mine open-pit limit |
| CN105507904A (en) * | 2016-01-15 | 2016-04-20 | 长沙有色冶金设计研究院有限公司 | Strip mine foundation pit production method |
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Application publication date: 20120704 |