CN113882861A - Method for recovering hanging slope ore on slope step in surface mine - Google Patents
Method for recovering hanging slope ore on slope step in surface mine Download PDFInfo
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- CN113882861A CN113882861A CN202111300212.8A CN202111300212A CN113882861A CN 113882861 A CN113882861 A CN 113882861A CN 202111300212 A CN202111300212 A CN 202111300212A CN 113882861 A CN113882861 A CN 113882861A
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- slope
- elevation
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- leaning
- mining
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000005065 mining Methods 0.000 claims abstract description 47
- 238000011084 recovery Methods 0.000 claims abstract description 32
- 239000002699 waste material Substances 0.000 claims abstract description 26
- 239000011435 rock Substances 0.000 claims abstract description 22
- 239000002994 raw material Substances 0.000 claims abstract description 10
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- 238000004891 communication Methods 0.000 claims description 13
- 239000002689 soil Substances 0.000 claims description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 9
- 239000011707 mineral Substances 0.000 abstract description 9
- 238000004064 recycling Methods 0.000 abstract description 3
- 238000005422 blasting Methods 0.000 description 5
- 238000005553 drilling Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 2
- 239000010878 waste rock Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/26—Methods of surface mining; Layouts therefor
- E21C41/30—Methods of surface mining; Layouts therefor for ores, e.g. mining placers
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Remote Sensing (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to the technical field of metallurgical mines, in particular to a method for recovering hanging slope ores on a slope step in an open pit mine, which comprises the following steps: a. recovering the hanging slope ore on the lowest elevation slope step in the mining area after mining is finished; b. after the recovery of the hanging slope ores on the lowest-elevation slope step is finished, backfilling the lowest-elevation slope step area by using waste rocks as backfilling raw materials until the waste rocks are backfilled to the height of the lowest-elevation slope step, wherein the waste rocks are generated in the mining area under mining; c. and according to the position of each elevation leaning step, recovering the hanging slope ore on each elevation leaning step from bottom to top in sequence. The hanging wall ore recovery method provided by the invention has the advantages that the implementation of normal internal dumping is not influenced, the normal production of a mine is ensured, the recycling of the hanging wall ore on the wall leaning step is realized, the recovery cost is lower, the waste of mineral resources is avoided, and the utilization rate of the mineral resources is improved.
Description
Technical Field
The invention relates to the technical field of metallurgical mines, in particular to a method for recovering hanging slope ores on a slope step in an open pit mine.
Background
In the open-pit mines, partial hanging wall ores with better grade and quality are remained on the leaning wall steps of the mining areas after the mining, and the partial hanging wall ores are not recovered at present, so that the waste of mineral resources is caused, and the utilization rate of the mineral resources is reduced.
Disclosure of Invention
The invention aims to provide a hanging wall ore recovery method on a side step in an open pit mine, which realizes the recovery of the hanging wall ore on the side step and improves the utilization rate of mineral resources.
The technical scheme adopted by the invention for solving the technical problems is as follows: a hanging slope ore recovery method on a slope step in a surface mine, wherein the surface mine at least comprises two mining areas, one of the mining areas is finished mining and can be used as an inner soil discharge field, and the method comprises the following steps:
a. recovering the hanging slope ore on the lowest elevation slope step in the mining area after mining is finished;
b. after the recovery of the hanging slope ores on the lowest-elevation slope step is finished, backfilling the lowest-elevation slope step area by using waste rocks as backfilling raw materials until the waste rocks are backfilled to the height of the lowest-elevation slope step, wherein the waste rocks are generated in the mining area under mining;
c. according to the position of each elevation back slope step, completing the recovery of hanging slope ores on each elevation back slope step from bottom to top in sequence; wherein, in the recovery process, the step of retrieving the hanging slope ore on the step of leaning on the step by the slope of relative higher height in two adjacent height leans on the step is: firstly, waste rocks are adopted to manufacture a communication road between a relatively low-elevation side-leaning step and a relatively high-elevation side-leaning step, then mining equipment passes through the communication road to the relatively high-elevation side-leaning step to recover hanging side ores of the relatively high-elevation side-leaning step, and finally, after the recovery of the hanging side ores of the relatively high-elevation side-leaning step is completed, the waste rocks are adopted as backfill raw materials to backfill the relatively low-elevation side-leaning step and the relatively high-elevation side-leaning step until the height of the relatively high-elevation side-leaning step is backfilled.
Further, the backfilling mode of each height leaning slope step area is slope-pressing foot type backfilling.
Further, the width and grade of the communication road are selected according to the technical parameters of the mining equipment used.
The invention has the beneficial effects that: and for the surface mine at least comprising two mining areas, one mining area is finished mining and can be used as an inner earth dump, waste rocks are used as backfilling raw materials when the mining area is finished and is used as the inner earth dump of the mining area, each height slope step is backfilled, a communication road between each height slope step is built, and the hanging slope ore recovery on each height slope step is completed sequentially from bottom to top. The hanging wall ore recovery method provided by the invention has the advantages that the implementation of normal internal dumping is not influenced, the normal production of a mine is ensured, the recycling of the hanging wall ore on the step close to the wall is realized, the recovery cost is lower, the waste of mineral resources is avoided, the utilization rate of the mineral resources is improved, and the method has wide applicability and popularization and application prospects.
Detailed Description
The invention relates to a hanging slope ore recovery method on a slope step in a surface mine, wherein the surface mine at least comprises two mining areas, one of the mining areas is finished mining and can be used as an inner soil discharge field, and the method comprises the following steps:
a. recovering the hanging slope ore on the lowest elevation slope step in the mining area after mining is finished;
b. after the recovery of the hanging slope ores on the lowest-elevation slope step is finished, backfilling the lowest-elevation slope step area by using waste rocks as backfilling raw materials until the waste rocks are backfilled to the height of the lowest-elevation slope step, wherein the waste rocks are generated in the mining area under mining;
c. according to the position of each elevation back slope step, completing the recovery of hanging slope ores on each elevation back slope step from bottom to top in sequence; wherein, in the recovery process, the step of retrieving the hanging slope ore on the step of leaning on the step by the slope of relative higher height in two adjacent height leans on the step is: firstly, waste rocks are adopted to manufacture a communication road between a relatively low-elevation side-leaning step and a relatively high-elevation side-leaning step, then mining equipment passes through the communication road to the relatively high-elevation side-leaning step to recover hanging side ores of the relatively high-elevation side-leaning step, and finally, after the recovery of the hanging side ores of the relatively high-elevation side-leaning step is completed, the waste rocks are adopted as backfill raw materials to backfill the relatively low-elevation side-leaning step and the relatively high-elevation side-leaning step until the height of the relatively high-elevation side-leaning step is backfilled.
Each mining area is divided into a plurality of elevation back slope steps or a plurality of horizontal back slope steps from top to bottom according to the height direction of the mining area.
In step b, in addition to defining the height of the waste rock backfill, the width of the waste rock backfill must also be sufficient for mining equipment use.
In the step c, the recovery of the hanging slope ores on each elevation leaning slope step is completed sequentially from bottom to top, the recovery of the hanging slope ores on the penultimate elevation leaning slope step is completed firstly (the recovery of the hanging slope ores on the lowest elevation leaning slope step is completed at this time), and then the recovery of the hanging slope ores on the penultimate elevation leaning slope step is completed again until the recovery of the hanging slope ores on the highest elevation leaning slope step is completed. In the recovery process, the step of recovering the hanging slope ore on the slope step with the third last height is as follows: firstly, waste rocks are adopted to manufacture a communication road between a penultimate height upper leaning step and a penultimate height upper leaning step, then mining equipment passes through the communication road to the penultimate height upper leaning step to recover hanging wall ores of the penultimate height upper leaning step, and finally, after the hanging wall ores of the penultimate height upper leaning step are recovered, the waste rocks are adopted as backfill raw materials to backfill the penultimate height upper leaning step and the penultimate height upper leaning step until the height of the penultimate height upper leaning step is backfilled to be higher than the height of the penultimate height upper leaning step.
The concrete steps of the hanging slope ores on each elevation leaning slope step are as follows: firstly, drilling holes in ore positions through drilling machine equipment, wherein the hole pitch is determined according to the hole diameter of a drilling machine and the blasting technical requirements, then blasting the ore positions, and blasting is carried out on the ore positions until the equipment can be dug, so that side slopes cannot be damaged by blasting; and finally, directly transporting the blasted ore away by an excavator-mounted automobile. In order to facilitate the stacking of ores, a certain space is reserved at the part of the ores close to the step close to the upper, and the ores after blasting are contained for stacking.
In order to ensure the safety and the backfill effect when each height leaning-on step area is backfilled, the backfilling mode is slope-pressing foot type backfilling. The width and gradient of the communication road are selected according to the technical parameters of the mining equipment used.
In summary, for a surface mine including at least two mining areas, one of the mining areas is finished mining and can be used as an inner earth dump, when the mining area is finished mining and is used as the inner earth dump of the mining area, waste rocks are used as backfill raw materials, each height slope step is backfilled, a communication road between each height slope step is built, and hanging slope ore recovery on each height slope step is completed sequentially from bottom to top. The hanging wall ore recovery method provided by the invention has the advantages that the implementation of normal internal dumping is not influenced, the normal production of a mine is ensured, the recycling of the hanging wall ore on the step close to the wall is realized, the recovery cost is lower, the waste of mineral resources is avoided, the utilization rate of the mineral resources is improved, and the method has wide applicability and popularization and application prospects.
Claims (3)
1. A hanging slope ore recovery method on a slope step in a surface mine at least comprises two mining areas, wherein one mining area is finished and can be used as an inner soil discharge field, and the method is characterized in that: the method comprises the following steps:
a. recovering the hanging slope ore on the lowest elevation slope step in the mining area after mining is finished;
b. after the recovery of the hanging slope ores on the lowest-elevation slope step is finished, backfilling the lowest-elevation slope step area by using waste rocks as backfilling raw materials until the waste rocks are backfilled to the height of the lowest-elevation slope step, wherein the waste rocks are generated in the mining area under mining;
c. according to the position of each elevation back slope step, completing the recovery of hanging slope ores on each elevation back slope step from bottom to top in sequence; wherein, in the recovery process, the step of retrieving the hanging slope ore on the step of leaning on the step by the slope of relative higher height in two adjacent height leans on the step is: firstly, waste rocks are adopted to manufacture a communication road between a relatively low-elevation side-leaning step and a relatively high-elevation side-leaning step, then mining equipment passes through the communication road to the relatively high-elevation side-leaning step to recover hanging side ores of the relatively high-elevation side-leaning step, and finally, after the recovery of the hanging side ores of the relatively high-elevation side-leaning step is completed, the waste rocks are adopted as backfill raw materials to backfill the relatively low-elevation side-leaning step and the relatively high-elevation side-leaning step until the height of the relatively high-elevation side-leaning step is backfilled.
2. A method of recovering an ore hanging from an upper ledge step in an open pit mine according to claim 1, wherein: the backfilling mode of each height leaning slope step area is slope toe type backfilling.
3. A method of recovering an ore hanging from an upper ledge step in an open pit mine according to claim 1, wherein: the width and gradient of the communication road are selected according to the technical parameters of the mining equipment used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111300212.8A CN113882861B (en) | 2021-11-04 | 2021-11-04 | Method for recovering hanging ore on leaning step in surface mine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111300212.8A CN113882861B (en) | 2021-11-04 | 2021-11-04 | Method for recovering hanging ore on leaning step in surface mine |
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| CN113882861A true CN113882861A (en) | 2022-01-04 |
| CN113882861B CN113882861B (en) | 2023-06-23 |
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| CN202111300212.8A Active CN113882861B (en) | 2021-11-04 | 2021-11-04 | Method for recovering hanging ore on leaning step in surface mine |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0461471A2 (en) * | 1990-06-12 | 1991-12-18 | Friedrich Wilhelm Paurat | Method and apparatus for sealing a waste dump |
| CN103133003A (en) * | 2013-02-25 | 2013-06-05 | 中国矿业大学 | Opencast mine end slope near-slope mining method |
| CN104806243A (en) * | 2015-03-09 | 2015-07-29 | 东北大学 | Wedge transferring transition method for transferring from open-pit mining to underground mining |
| CN107503750A (en) * | 2017-09-30 | 2017-12-22 | 辽宁工程技术大学 | A kind of Waste Dump inside Open Pit Mine presser feet, which is hung, helps parallel building method |
| CN110735639A (en) * | 2019-11-12 | 2020-01-31 | 中冶沈勘秦皇岛工程设计研究总院有限公司 | Open pit backfilling method after mining by open pit to underground caving method |
-
2021
- 2021-11-04 CN CN202111300212.8A patent/CN113882861B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0461471A2 (en) * | 1990-06-12 | 1991-12-18 | Friedrich Wilhelm Paurat | Method and apparatus for sealing a waste dump |
| CN103133003A (en) * | 2013-02-25 | 2013-06-05 | 中国矿业大学 | Opencast mine end slope near-slope mining method |
| CN104806243A (en) * | 2015-03-09 | 2015-07-29 | 东北大学 | Wedge transferring transition method for transferring from open-pit mining to underground mining |
| CN107503750A (en) * | 2017-09-30 | 2017-12-22 | 辽宁工程技术大学 | A kind of Waste Dump inside Open Pit Mine presser feet, which is hung, helps parallel building method |
| CN110735639A (en) * | 2019-11-12 | 2020-01-31 | 中冶沈勘秦皇岛工程设计研究总院有限公司 | Open pit backfilling method after mining by open pit to underground caving method |
Non-Patent Citations (1)
| Title |
|---|
| 连宏强;禹朝群;: "某铁矿露天采场提前转地下开采技术探讨", 采矿技术, no. 04 * |
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| CN113882861B (en) | 2023-06-23 |
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