WO2013105881A2 - Procédé de construction d'un système d'injection pour l'exploitation d'une partie non recouverte d'eau d'un amas de minerai lors de la lixiviation souterraine - Google Patents
Procédé de construction d'un système d'injection pour l'exploitation d'une partie non recouverte d'eau d'un amas de minerai lors de la lixiviation souterraine Download PDFInfo
- Publication number
- WO2013105881A2 WO2013105881A2 PCT/RU2013/000004 RU2013000004W WO2013105881A2 WO 2013105881 A2 WO2013105881 A2 WO 2013105881A2 RU 2013000004 W RU2013000004 W RU 2013000004W WO 2013105881 A2 WO2013105881 A2 WO 2013105881A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- water
- ore body
- injection
- constructing
- leaching
- Prior art date
Links
- 238000002347 injection Methods 0.000 title claims abstract description 45
- 239000007924 injection Substances 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 41
- 238000002386 leaching Methods 0.000 title claims abstract description 26
- 229920006395 saturated elastomer Polymers 0.000 title abstract 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 238000001764 infiltration Methods 0.000 claims abstract description 23
- 230000008595 infiltration Effects 0.000 claims abstract description 22
- 238000010276 construction Methods 0.000 claims abstract description 8
- 230000003245 working effect Effects 0.000 claims description 9
- 239000000243 solution Substances 0.000 abstract description 26
- 238000005065 mining Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 10
- 238000011161 development Methods 0.000 abstract description 8
- 238000000605 extraction Methods 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 238000005086 pumping Methods 0.000 description 9
- 230000007480 spreading Effects 0.000 description 9
- 238000003892 spreading Methods 0.000 description 9
- 230000018109 developmental process Effects 0.000 description 6
- 238000001914 filtration Methods 0.000 description 6
- 239000004927 clay Substances 0.000 description 5
- 239000003673 groundwater Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 101150059107 MPK6 gene Proteins 0.000 description 2
- 101100170064 Mus musculus Ddr1 gene Proteins 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000002262 irrigation Effects 0.000 description 2
- 238000003973 irrigation Methods 0.000 description 2
- 230000008520 organization Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 229920006255 plastic film Polymers 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000009827 uniform distribution Methods 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000004063 acid-resistant material Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000033558 biomineral tissue development Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/28—Dissolving minerals other than hydrocarbons, e.g. by an alkaline or acid leaching agent
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/16—Methods of underground mining; Layouts therefor
- E21C41/22—Methods of underground mining; Layouts therefor for ores, e.g. mining placers
Definitions
- the invention relates to mining, and in particular to geotechnological methods for mining deposits.
- the geofiltration medium is characterized by heterogeneity both in plan and in section, especially in its non-irrigated part. Therefore, accounting, identifying and using these features can reduce costs in the construction of an injection system for working out the unified part of the ore body.
- a known method of mining using the dissolution process (US JY "4586752, IPC C22BZ / 06; C22B60 / 02; E21B43 / 28, publ. 1986-05-06), which is especially applicable for the development of deposits, at least partially covered with underground water
- the process is conducted in three stages: at the first stage, the leaching solution is injected and a production solution is discharged onto the surface; on the second, they carry out only the issuance of a production solution to the surface; on the third, they again start pumping the leach and pumping out the production solution.
- SUBSTITUTE SHEET (RULE 26) horizon and after reaching the water level in the pumping wells corresponding to the provision of pumping, leaching solutions and pumping water from the pumping wells begin to be pumped into the pumping wells.
- pools ponds
- platforms ponds
- ditches grooves
- closed infiltration systems which are used as tubular drains, galleries, adits, boreholes and mine wells.
- the use of open or closed infiltration systems is determined by the technical characteristics of the equipment used and the geological conditions at the place of work. Compulsory
- SUBSTITUTE SHEET (RULE 26)
- the condition for the effective operation of such structures is the presence of a high geofiltration uniformity in the non-irrigated part of the horizon into which water is supplied from the replenishment source, both in plan and in section, and the absence of deposits that impede the infiltration movement of water in the roof of the aquifer.
- Mineral deposits mined by underground leaching are characterized by geofiltration heterogeneity of the medium both in plan and in section, which can be used to reduce costs in the construction of injection systems in underground leaching processes.
- Geofiltration heterogeneity is created during the weathering of various intermediate and final decomposition products of minerals and rocks, which can dissolve and be carried away by surface waters. Their migration is carried out in the form of mechanical suspensions, colloidal and true solutions, as a result of which zones with different filtration permeability are formed.
- layers of increased filtration capacity with a thickness of the order of a few meters in the upper part of the weathering crust, formed naturally as a result of chemical and physical weathering of rocks, fine fractions during crust formation and evolutionary weathering, can serve as a natural collector for feeding leaching solutions to the non-irrigated part of the ore body , and for the development of deposits having areas with a shallow ore bedding, with geotechnological methods of mining using calling infiltration channels, or trenches, or drains, or injection wells.
- SUBSTITUTE SHEET (RULE 26)
- the disadvantages of this method include the low percentage of extraction of the natural component, significant costs for the construction of the injection system and poor environmental conditions due to the organization of a large number of injection workings, and, as a result, the number of possible spills.
- an open long-acting source of water should be located nearby, the selection of water from which will not harm the environment.
- the problem to which the invention is directed is to develop a method for constructing an injection system for working out the non-irrigated part of the ore body during underground leaching.
- the technical result of the proposed solution is to increase the degree of extraction of the useful component due to the involvement in the development of the non-irrigated part of the ore body, uniform distribution of the leaching solution, reducing the cost of constructing the injection system and improving the environmental situation at the place of work by reducing the number of injection workings and, as a result , the number of possible spills.
- the flooded part of the ore body is opened as usual using injection and pumping openings.
- the method of constructing an injection system for working out the non-watered part of the ore body during underground leaching including the construction of injection workings, according to the invention
- the most water-spaced interval is allocated, usually located under cover deposits in the upper part of the non-irrigated ore body, and open it with injection workings.
- injection workings infiltration ditches or trenches, or drains, or injection wells are used;
- infiltration ditches or trenches, or drains, or injection wells are constructed depending on the thickness of the identified most water-conducting interval, its location and the thickness of the overburden.
- Figure 1 shows a diagram of the infiltration ditch
- FIG. 2- shows a diagram of the infiltration well
- FIG. 3 shows the location of the wells on the test cells.
- Diagram of the infiltration ditch includes: 1 - cover deposits; 2 - clay layer; 3 - zone of increased water conductivity; 4 - non-irrigated horizon; 5 - flooded horizon; 6 - injection manifold; 7 - a pipe; 8 - infiltration ditch; 9 - soil backfill; 10 - clay backfill; 1 1 - plastic film; 12 - filter material; 13 - spreading zone.
- Scheme infiltration wells includes: 1 - cover deposits; 2 - clay layer; 3 - zone of increased water conductivity; 4 - non-irrigated horizon; 5 - flooded horizon; 12 - filter material; 13 - spreading zone; 14 is a well; 15 - casing with a filter; 16 - annular cementation.
- the layout of the wells in the test cells includes: 1 - cover deposits; 2 - clay layer; 3 - zone of increased water conductivity; 4 - non-irrigated horizon; 5 - flooded horizon; 12 - filter material; 13 - spreading zone; 14 - well; 15 - casing with a filter; 16 - annular cementation.
- An obligatory stage of field development should be the conduct of hydrogeological studies by known methods, for example, during which the degree of water cut of the field and the possibility of its development by geotechnological methods are established.
- hydrogeological and geophysical methods identify the zone of increased water conductivity in its upper part and, depending on the depth and thickness of the location, open it with infiltration
- SUBSTITUTE SHEET (RULE 26) ditches, or trenches, or drains, or injection wells, and in the case of a zone of increased filterability to the surface, ponds are built.
- infiltration ditches 8 are constructed to open the identified zone of increased water conductivity 3, they are covered with filtering acid-resistant material 12, the filtration properties of which are higher than those of the identified most water-conducting interval, covered with plastic film 1 1, covered with clay 10 and backfill soil 9 and roll away. Leaching solutions are fed into the layer of filtering material through pipes 7 connected to the injection manifold 6.
- Irrigation ponds are arranged in natural or artificial excavations on the surface of the ore body. The feasibility of their use is determined by the topography and properties of the leaching reagents.
- the number of ditches, wells and ponds is selected from the condition of overlapping in terms of infiltration flows and the required irrigation density.
- the non-irrigated zone was located in the upper part of the ore body and is overlain by alluvial deposits with a thickness of 5-7 meters.
- the thicknesses of the non-irrigated part of the ore body and its upper, more permeable part were determined, which amounted, respectively, to 28-35 and 2-4 m.
- a solution was supplied through the Ns l borehole to the upper, most permeable, non-irrigated part of the ore body, and through the J4b2 and N ° 3 boreholes, to the underlying non-watered parts located ten and twenty meters deeper, respectively.
- the injectivity and spreading area of the solutions along the N ° l borehole constructed in the upper part of the non-irrigated ore body is significantly higher than the similar values for the 2 and _ ⁇ _3 boreholes, which makes it possible to use a significantly smaller number of injection boreholes with the same volume of solutions injected into the ore body , and therefore reduce the cost of their construction and minimize environmental risks associated with accidents of the injection system.
- the uniform distribution of leaching solutions and the possibility of supplying them to the non-irrigated horizons of the ore body can increase the degree of extraction of useful components.
- the above example shows the advantage of the proposed method of constructing an injection system for mining the non-irrigated part of the ore body during underground leaching over the known ones.
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Geochemistry & Mineralogy (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Remote Sensing (AREA)
- Geophysics And Detection Of Objects (AREA)
- Sewage (AREA)
Abstract
Le procédé de construction d'un système d'injection pour l'exploitation d'une partie non recouverte d'eau d'un amas de minerai lors de la lixiviation souterraine se rapporte au domaine de l'industrie minière et notamment des procédés géotechnologiques d'exploitation de gisements. Le procédé consiste à construire des structures d'exploitation à injection et à isoler dans la partie non recouverte d'eau d'un amas de minerai, lors d'une prospection hydrogéoloqique et géophysique, l'intervalle à conduction d'eau maximal qui se situe en règle générale sous les dépôts de couverture dans la partie supérieure de la partie non recouverte d'eau de l'amas de minerai, et l'extraire au moyen de structures d'exploitation à injection. On utilise en tant que structures d'exploitation à injection des canaux ou tranchées à infiltration, des drainages ou des puits à injection ménagés en fonction de la puissance de l'intervalle de conduction d'eau, de sa disposition et de l'importance des dépôts de couverture. L'utilisation du procédé de l'invention permet d'augmenter sensiblement le degré d'exploitation du composant utile grâce à l'utilisation dans les exploitations de la partie non recouverte d'eau de l'amas de minerai; de réduire les frais liés à la construction d'un système de pompage et d'améliorer la situation écologique sur le site des travaux grâce à la réduction du nombre de structures d'exploitation à injection et, partant, du nombre de déversements accidentels possibles.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2012100893 | 2012-01-11 | ||
| RU2012100893/03A RU2012100893A (ru) | 2012-01-11 | 2012-01-11 | Способ сооружения закачной системы для отработки необводненной части рудного тела при подземном выщелачивании |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2013105881A2 true WO2013105881A2 (fr) | 2013-07-18 |
| WO2013105881A3 WO2013105881A3 (fr) | 2013-10-03 |
Family
ID=48782037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/RU2013/000004 WO2013105881A2 (fr) | 2012-01-11 | 2013-01-09 | Procédé de construction d'un système d'injection pour l'exploitation d'une partie non recouverte d'eau d'un amas de minerai lors de la lixiviation souterraine |
Country Status (3)
| Country | Link |
|---|---|
| EA (1) | EA201300066A1 (fr) |
| RU (1) | RU2012100893A (fr) |
| WO (1) | WO2013105881A2 (fr) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109083644A (zh) * | 2018-08-16 | 2018-12-25 | 中南大学 | 一种缓倾斜中厚矿体安全高效采矿方法 |
| CN114000859A (zh) * | 2021-10-25 | 2022-02-01 | 紫金矿业集团股份有限公司 | 一种基于溶浸采矿法的采矿装置及采矿方法 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4586752A (en) * | 1978-04-10 | 1986-05-06 | Union Oil Company Of California | Solution mining process |
| RU2185507C1 (ru) * | 2001-03-27 | 2002-07-20 | Общество с ограниченной ответственностью "Геоприд" | Способ извлечения благородных металлов из руд на месте залегания методом подземного выщелачивания |
-
2012
- 2012-01-11 RU RU2012100893/03A patent/RU2012100893A/ru unknown
-
2013
- 2013-01-09 EA EA201300066A patent/EA201300066A1/ru unknown
- 2013-01-09 WO PCT/RU2013/000004 patent/WO2013105881A2/fr active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4586752A (en) * | 1978-04-10 | 1986-05-06 | Union Oil Company Of California | Solution mining process |
| RU2185507C1 (ru) * | 2001-03-27 | 2002-07-20 | Общество с ограниченной ответственностью "Геоприд" | Способ извлечения благородных металлов из руд на месте залегания методом подземного выщелачивания |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109083644A (zh) * | 2018-08-16 | 2018-12-25 | 中南大学 | 一种缓倾斜中厚矿体安全高效采矿方法 |
| CN109083644B (zh) * | 2018-08-16 | 2019-08-02 | 中南大学 | 一种缓倾斜中厚矿体安全高效采矿方法 |
| CN114000859A (zh) * | 2021-10-25 | 2022-02-01 | 紫金矿业集团股份有限公司 | 一种基于溶浸采矿法的采矿装置及采矿方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| EA201300066A1 (ru) | 2013-07-30 |
| WO2013105881A3 (fr) | 2013-10-03 |
| RU2012100893A (ru) | 2013-07-20 |
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