CA2295230C - Method for the combined exploitation of mining fields - Google Patents
Method for the combined exploitation of mining fields Download PDFInfo
- Publication number
- CA2295230C CA2295230C CA002295230A CA2295230A CA2295230C CA 2295230 C CA2295230 C CA 2295230C CA 002295230 A CA002295230 A CA 002295230A CA 2295230 A CA2295230 A CA 2295230A CA 2295230 C CA2295230 C CA 2295230C
- Authority
- CA
- Canada
- Prior art keywords
- safety
- level
- open pit
- mine
- mining
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000005065 mining Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000011435 rock Substances 0.000 claims abstract description 28
- 230000003245 working effect Effects 0.000 claims abstract description 12
- 238000006073 displacement reaction Methods 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 230000001174 ascending effect Effects 0.000 claims description 2
- 238000004873 anchoring Methods 0.000 claims 1
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 5
- 239000011707 mineral Substances 0.000 abstract description 5
- 238000005422 blasting Methods 0.000 abstract description 2
- 238000013517 stratification Methods 0.000 abstract description 2
- 230000003466 anti-cipated effect Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000005553 drilling Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 239000011440 grout Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 210000002683 foot Anatomy 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 230000000979 retarding effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 210000004233 talus Anatomy 0.000 description 1
- 230000007306 turnover 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
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Remote Sensing (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
- Earth Drilling (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
- Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
- Junction Field-Effect Transistors (AREA)
- Metal Rolling (AREA)
Abstract
The present invention relates to the mining industry and can be used for mining mineral deposits, regardless of their thickness or stratification angle, allowing a reduction in the volume of overburden operations. The invention provides for clearing to a deposit through mining, removing the main reserves by open pit operations, with safe ty benches (15) being formed on the open pit's steps (6). The reserves of each level (3 ) are mined by blasting downcast holes, when viewed from the top, in the direction of steps (6), with safety prisms (7) being formed at a design contour thereof. The prisms are broken down during the final stage of work on each level to leave a vertical or clo se to vertical slope within each level. The rock bulk created in the process of destroying safety prisms (7) is bypassed into mine transport workings of an underlying level (3), whereupon it is removed to the surface. Rocks of the massif around the conto ur are reinforced by injecting and/or mounting prestressed anchors (11).
Description
METHODS FOR THE COMBINED EXPLOITATION OF MINING FIELDS
FIELD OF THE ART
The present invention relates to the mining industry and could be used for mining mineral deposits independent of their thickness and stratification angle.
BACKGROUND TO THE INVENTION
Prior references teach a method for mining of deposits which includes exploiting the mine using an open pit method and further using self-propelled machinery. Rock bulk is conveyed into an underground mine created earlier and the rock bulk is subsequently hoisted over a conveyor slope to the surface (U.S. Patent No. 4,103,972; US
CI. 299/18, 1978).
A further known method for combined mining includes clearing a bed using a vertical shaft and crosscuttings as well as mining the main reserves by open pit mining. Within a level, the mining work begins with the carving and exposing of rocks of a wall whereupon the reserves are recovered. Blast holes are drilled from the bottom of the wall, and the bulk rock is transported along the operations of the level being cleared (USSR Inventor's Certificate No. 1461930, E 21C 41/06, 1989).
The prior art solutions have a disadvantage in the substantial volume of overburden operations due to the impossibility of forming open pit mines with a steep final angle of the outer wall. This further makes it impossible to mine beds of large areas.
SUMMARY OF THE INVENTION
The present invention overcomes the disadvantage of the prior art by providing a method to reduce the volume of overburden operations due to the creation of a steep angle of the open pit mine's outer wall.
The present invention comprises a method of combined mining that includes clearing a deposit through mine operations and removing the main reserves by open pit mining.
Safety benches are formed on the open pit steps, descending holes are drilled from the surface of the steps, and bulk rock is transported along the mine workings of the level being cleared. When viewed from the top, the reserves at each level are mined in the direction of the flank of the open pit with a safety prism being formed at the outer perimeter of the mine. The safety prisms are cleared during the work on each level so that a vertical or close to vertical slope is formed within that level. The rock bulk that is cleared when the safety prism is broken down is removed using the mine transport operations of an underlying level where it is removed to the surface. The main reserves of each level are moved from an ore chute to a flank of the open pit using self-propelled machinery. Remote controlled equipment is used for clearing the safety prisms and the resources of these prisms are extracted by select methods. A safety bench of the wall of the open pit is formed such as to extend through several levels and rocks beyond the perimeter of the open pit that are located within a displacement zone are reinforced using prestressed anchors andlor by injecting binding grouts through holes drilled in the body of the safety prisms. Steel ropes are arranged to be disposed on the earth surface and anchored beyond the displacement zone. The ends of the safety ropes are sunk at various depths into the safety prisms to additionally support them. The safety prisms are cleared using horizontal or ascending holes therein.
The order provided above for carrying out the work allows the formation within a level of a vertical or close to vertical angle of a wall. This becomes possible due to the safety prisms being formed within each level along the entire outer perimeter of the mine to prevent emergency situations caused by local cave-ins of the rocks, further combined with the order provided for carrying out work related to the extraction of the reserves in these safety prisms and the addition of measures to improve the stability of the zone within the mass of rocks around the outer contour to ensure the stability of the mass throughout the entire period of the operation of the mining enterprise.
The object and advantage of the present invention will become more apparent with reference to the following description taken in conjunction with the accompanying drawings.
FIELD OF THE ART
The present invention relates to the mining industry and could be used for mining mineral deposits independent of their thickness and stratification angle.
BACKGROUND TO THE INVENTION
Prior references teach a method for mining of deposits which includes exploiting the mine using an open pit method and further using self-propelled machinery. Rock bulk is conveyed into an underground mine created earlier and the rock bulk is subsequently hoisted over a conveyor slope to the surface (U.S. Patent No. 4,103,972; US
CI. 299/18, 1978).
A further known method for combined mining includes clearing a bed using a vertical shaft and crosscuttings as well as mining the main reserves by open pit mining. Within a level, the mining work begins with the carving and exposing of rocks of a wall whereupon the reserves are recovered. Blast holes are drilled from the bottom of the wall, and the bulk rock is transported along the operations of the level being cleared (USSR Inventor's Certificate No. 1461930, E 21C 41/06, 1989).
The prior art solutions have a disadvantage in the substantial volume of overburden operations due to the impossibility of forming open pit mines with a steep final angle of the outer wall. This further makes it impossible to mine beds of large areas.
SUMMARY OF THE INVENTION
The present invention overcomes the disadvantage of the prior art by providing a method to reduce the volume of overburden operations due to the creation of a steep angle of the open pit mine's outer wall.
The present invention comprises a method of combined mining that includes clearing a deposit through mine operations and removing the main reserves by open pit mining.
Safety benches are formed on the open pit steps, descending holes are drilled from the surface of the steps, and bulk rock is transported along the mine workings of the level being cleared. When viewed from the top, the reserves at each level are mined in the direction of the flank of the open pit with a safety prism being formed at the outer perimeter of the mine. The safety prisms are cleared during the work on each level so that a vertical or close to vertical slope is formed within that level. The rock bulk that is cleared when the safety prism is broken down is removed using the mine transport operations of an underlying level where it is removed to the surface. The main reserves of each level are moved from an ore chute to a flank of the open pit using self-propelled machinery. Remote controlled equipment is used for clearing the safety prisms and the resources of these prisms are extracted by select methods. A safety bench of the wall of the open pit is formed such as to extend through several levels and rocks beyond the perimeter of the open pit that are located within a displacement zone are reinforced using prestressed anchors andlor by injecting binding grouts through holes drilled in the body of the safety prisms. Steel ropes are arranged to be disposed on the earth surface and anchored beyond the displacement zone. The ends of the safety ropes are sunk at various depths into the safety prisms to additionally support them. The safety prisms are cleared using horizontal or ascending holes therein.
The order provided above for carrying out the work allows the formation within a level of a vertical or close to vertical angle of a wall. This becomes possible due to the safety prisms being formed within each level along the entire outer perimeter of the mine to prevent emergency situations caused by local cave-ins of the rocks, further combined with the order provided for carrying out work related to the extraction of the reserves in these safety prisms and the addition of measures to improve the stability of the zone within the mass of rocks around the outer contour to ensure the stability of the mass throughout the entire period of the operation of the mining enterprise.
The object and advantage of the present invention will become more apparent with reference to the following description taken in conjunction with the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 is a cross-sectional view of a mine illustrating the method of the present invention with a steeply dipping thick ore bed with safety benches being formed on each level.
Figure 2 is a cross-sectional view of the mine shown in Figure 1 with the safety benches being formed for every two levels and the mass of rocks beyond the perimeter of the mine being reinforced.
DETAILED DESCRIPTION OF THE DRAWINGS
Reference is now made to the drawings.
A deposit is revealed by means of a working 1 which, for example, could be a spiral crossoverfor self-propelled equipment. Working 1 is disposed beyond the displacement zone of the mine and is accessed by means of horizontal or inclined workings 2. In one embodiment, working 1 can include an incline shaft equipped with a conveyor.
One skilled in the art will realize that it is also possible to clear deposits having a vast area by using several workings 1.
If mineral deposits extend down to a substantial depth, the reserves of such deposit are mined out on several levels 3. On the floor of each level 3, ore chutes 4 extend from the floor to transport workings 2 on the level below. The deposit is mined in an open pit and the reserves of each level 3 are extracted by drilling out from the surface of the steps using descending holes 5. Descending holes 5 are blasted to break down the main reserves of the level 3.
The rock bulk that is broken down is transported along workings 2. In one embodiment, a self-propelled conveyor can be used where it can be delivered to the surface using a working 1 such as a spiral crossover.
When viewed from the top, main reserves of a level 3 are extracted in the direction of the open cut flanks 6 with temporary safety prisms 7 being left around the perimeter.
Figure 1 is a cross-sectional view of a mine illustrating the method of the present invention with a steeply dipping thick ore bed with safety benches being formed on each level.
Figure 2 is a cross-sectional view of the mine shown in Figure 1 with the safety benches being formed for every two levels and the mass of rocks beyond the perimeter of the mine being reinforced.
DETAILED DESCRIPTION OF THE DRAWINGS
Reference is now made to the drawings.
A deposit is revealed by means of a working 1 which, for example, could be a spiral crossoverfor self-propelled equipment. Working 1 is disposed beyond the displacement zone of the mine and is accessed by means of horizontal or inclined workings 2. In one embodiment, working 1 can include an incline shaft equipped with a conveyor.
One skilled in the art will realize that it is also possible to clear deposits having a vast area by using several workings 1.
If mineral deposits extend down to a substantial depth, the reserves of such deposit are mined out on several levels 3. On the floor of each level 3, ore chutes 4 extend from the floor to transport workings 2 on the level below. The deposit is mined in an open pit and the reserves of each level 3 are extracted by drilling out from the surface of the steps using descending holes 5. Descending holes 5 are blasted to break down the main reserves of the level 3.
The rock bulk that is broken down is transported along workings 2. In one embodiment, a self-propelled conveyor can be used where it can be delivered to the surface using a working 1 such as a spiral crossover.
When viewed from the top, main reserves of a level 3 are extracted in the direction of the open cut flanks 6 with temporary safety prisms 7 being left around the perimeter.
Safety prisms 7 are constructed such that their perimeter is sufficiently wide to ensure safe working conditions within the level below safety prisms 7 throughout the entire period the workers are present on that level. Alternatively, it is possible to carry out the extraction beginning from an ore chute 4 used during the initial stage as a compensation slit.
In order to hold massif 8 around the outer perimeter so as to prevent its caving in within the period while work is being carried out in the open pit, a reinforcing belt 9 can be formed by injecting bonding grouts or resins into the anticipated displacement zone 10 during the final stage of work related to mining of the deposit. Further, prestressed anchors 11 can be mounted with their ends arranged to be disposed beyond the anticipated displacement zone 10. Further, steel ropes 12 can be arranged to be disposed on the earth's surface and to be anchored beyond displacement zone 10.
Steel ropes 12 can have their ends secured at various depths in rocks of the anticipated displacement zone 10. As one skilled in the art will realize, rails, pipes, etc., should be placed under ropes 12 laid on the surface prior to tensioning ropes 12 in order to prevent ropes 12 from cutting the soil on the surface in the process of applying a load to them.
Bonding grouts may be injected both prior to and after mounting anchors 11. In the case of injecting the grouts prior to mounting anchors 11, these grouts may include additional admixtures retarding the hardening process. The amount and composition of these admixtures are to be selected based on the condition that polymerization of the compound should take place after anchors 11 are tensioned. This further creates the advantage that the strength characteristics of the mass being reinforced will be higher due to the pressing of excessive grout out of the cracks and penetrating grout deeper into the fissured mass of rocks.
Injection into the rocks to provide a reinforcing belt 9 is accomplished by means of horizontal or inclined holes 13 drilled through the body of safety prisms 7.
In order to hold massif 8 around the outer perimeter so as to prevent its caving in within the period while work is being carried out in the open pit, a reinforcing belt 9 can be formed by injecting bonding grouts or resins into the anticipated displacement zone 10 during the final stage of work related to mining of the deposit. Further, prestressed anchors 11 can be mounted with their ends arranged to be disposed beyond the anticipated displacement zone 10. Further, steel ropes 12 can be arranged to be disposed on the earth's surface and to be anchored beyond displacement zone 10.
Steel ropes 12 can have their ends secured at various depths in rocks of the anticipated displacement zone 10. As one skilled in the art will realize, rails, pipes, etc., should be placed under ropes 12 laid on the surface prior to tensioning ropes 12 in order to prevent ropes 12 from cutting the soil on the surface in the process of applying a load to them.
Bonding grouts may be injected both prior to and after mounting anchors 11. In the case of injecting the grouts prior to mounting anchors 11, these grouts may include additional admixtures retarding the hardening process. The amount and composition of these admixtures are to be selected based on the condition that polymerization of the compound should take place after anchors 11 are tensioned. This further creates the advantage that the strength characteristics of the mass being reinforced will be higher due to the pressing of excessive grout out of the cracks and penetrating grout deeper into the fissured mass of rocks.
Injection into the rocks to provide a reinforcing belt 9 is accomplished by means of horizontal or inclined holes 13 drilled through the body of safety prisms 7.
The number of prestressed anchors 11 and their tension and supporting power is determined to ensure the stability of open pit flank 6 throughout the entire period the mining enterprise is in service.
The location that ore chute 4 is created on a level 3 is determined based on the consideration that the mouth of ore chute 4 should be located at a border of safety prisms 7 at the lower edge of the space that has been mined out in the open pit.
After the main reserves of a first level are extracted, the remaining reserves of minerals located within safety prisms 7 are mined out so as to form a final design contour 6 of the open pit mine. The mass of safety prisms 7 is first drilled out to provide horizontal holes 14 therein using a track-mounted drill installed at the face so as to provide a ring of rising holes (not shown) drilled from the foot of safety prisms 7. Drilling of safety prisms 7 to provide rings of rising holes therein can also be affected from slopes (not shown) driven specially for this purpose or from transport workings 2. Drilling and blasting operations, when breaking safety prisms 7, are carried out so as to form the flank 6 of the level 3 thus being formed. The final surface of flank 6 is vertical or close to vertical within the level 3. In the final stage of mining of the reserves of the level 3, bulk rock that is broken down from safety prisms 7 by means of remote controlled equipment is delivered to ore chute 4 and bypassed into the lower level 3, whereupon it is transported to the surface over the workings 2 and the workings 1 which may be a spiral crossover.
In the case of safety prisms 7 being disposed on an "ore-to-rock" interface, selective extraction can be carried out.
In the process of mining a level 3, the open pit flank 6 is formed with a safety bench 15 whose width is determined to ensure that sufficiently reliable protection is provided for the workers and equipment on underlying levels 3 against falling stones and accumulating material of talus for as long as the work is being carried out.
These benches are not designed to be used for transport or other purposes, except for the ones mentioned above to ensure minimum width and maximum total steepness of flank 6.
In some cases when enclosing rocks are more stable, it is advisable to form one safety bench 15 per several levels 3.
The Industrial Applicability The realization of the methods of the present invention allows the mining of mineral deposits with steeper angles forming an open pit mine.
The increased angle of the open pit's outer wall creates the possibility of decreasing the volume of overburden in the outer perimeter of the open pit mine by 70-80% and thus decreases the costs for mining out the deposits and for recultivation of rock spoil banks.
The steeper contours on the open pit's perimeter also decreases the area being withdrawn from and thus allows efficient turnover for the mining of a deposit because there is no necessity to clear a part of surrounding areas and additionally decreases the area needed for rock spoil banks by 80-90%.
The location that ore chute 4 is created on a level 3 is determined based on the consideration that the mouth of ore chute 4 should be located at a border of safety prisms 7 at the lower edge of the space that has been mined out in the open pit.
After the main reserves of a first level are extracted, the remaining reserves of minerals located within safety prisms 7 are mined out so as to form a final design contour 6 of the open pit mine. The mass of safety prisms 7 is first drilled out to provide horizontal holes 14 therein using a track-mounted drill installed at the face so as to provide a ring of rising holes (not shown) drilled from the foot of safety prisms 7. Drilling of safety prisms 7 to provide rings of rising holes therein can also be affected from slopes (not shown) driven specially for this purpose or from transport workings 2. Drilling and blasting operations, when breaking safety prisms 7, are carried out so as to form the flank 6 of the level 3 thus being formed. The final surface of flank 6 is vertical or close to vertical within the level 3. In the final stage of mining of the reserves of the level 3, bulk rock that is broken down from safety prisms 7 by means of remote controlled equipment is delivered to ore chute 4 and bypassed into the lower level 3, whereupon it is transported to the surface over the workings 2 and the workings 1 which may be a spiral crossover.
In the case of safety prisms 7 being disposed on an "ore-to-rock" interface, selective extraction can be carried out.
In the process of mining a level 3, the open pit flank 6 is formed with a safety bench 15 whose width is determined to ensure that sufficiently reliable protection is provided for the workers and equipment on underlying levels 3 against falling stones and accumulating material of talus for as long as the work is being carried out.
These benches are not designed to be used for transport or other purposes, except for the ones mentioned above to ensure minimum width and maximum total steepness of flank 6.
In some cases when enclosing rocks are more stable, it is advisable to form one safety bench 15 per several levels 3.
The Industrial Applicability The realization of the methods of the present invention allows the mining of mineral deposits with steeper angles forming an open pit mine.
The increased angle of the open pit's outer wall creates the possibility of decreasing the volume of overburden in the outer perimeter of the open pit mine by 70-80% and thus decreases the costs for mining out the deposits and for recultivation of rock spoil banks.
The steeper contours on the open pit's perimeter also decreases the area being withdrawn from and thus allows efficient turnover for the mining of a deposit because there is no necessity to clear a part of surrounding areas and additionally decreases the area needed for rock spoil banks by 80-90%.
Claims (7)
1. A method for combined mining to clear a deposit using mine workings and for removing a level using open pit mining, with safety benches being formed on the open pit's steps, downcast holes being drilled from the surface of said steps, and rock bulk being transported along said mine workings of said level to the surface, said method comprising:
mining, when viewed from the top, in the direction of a flank of said open pit;
forming a safety prism at the outer perimeter of said open pit;
breaking down said safety prism during the final stage of work on said level to create a vertical or close to vertical slope within said level;
bypassing rock bulk broken down from said safety prism into mine transport workings of an underlying level; and removing said rock bulk to the surface.
mining, when viewed from the top, in the direction of a flank of said open pit;
forming a safety prism at the outer perimeter of said open pit;
breaking down said safety prism during the final stage of work on said level to create a vertical or close to vertical slope within said level;
bypassing rock bulk broken down from said safety prism into mine transport workings of an underlying level; and removing said rock bulk to the surface.
2. The method according to claim 1, wherein said main reserves of said level are removed beginning from an ore chute and moving to said flank using self propelled machinery, remote controlled equipment for clearing safety prisms being used thereby creating a safety bench at said flank, said safety bench extending through several levels.
3. The method according to claim 1, wherein rocks beyond the perimeter of the open pit mine but located within a displacement zone are reinforced using prestressed anchors.
4. The method according to claim 1, wherein rocks beyond the perimeter of the open pit mine but located within a displacement zone are reinforced by injecting binding grouts through holes drilled through the body of the safety prism.
5. The method according to claim 1, wherein rocks beyond the perimeter of the open pit mine but located within a displacement zone are reinforced using prestressed anchors and injecting binding grouts through holes drilled through the body of safety prism.
6. The method according to any of claims 2 to 5, further comprising disposing steel ropes on the earth surface and anchoring said steel ropes beyond the displacement zone, said steel ropes having ends sunk at various depths in rocks beyond the open pit mine's perimeter to further reinforce said open pit mine.
7. The method of claim 1, wherein said safety prisms are further drilled to provide horizontal or ascending holes therein.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU98101994 | 1998-02-12 | ||
| RU98101994/03A RU2132950C1 (en) | 1998-02-12 | 1998-02-12 | Method for combination development of deposits |
| PCT/RU1998/000276 WO1999041489A1 (en) | 1998-02-12 | 1998-08-27 | R.b. yun's method for the combined exploitation of mining fields |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2295230A1 CA2295230A1 (en) | 1999-08-19 |
| CA2295230C true CA2295230C (en) | 2004-05-25 |
Family
ID=20201898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002295230A Expired - Fee Related CA2295230C (en) | 1998-02-12 | 1998-08-27 | Method for the combined exploitation of mining fields |
Country Status (7)
| Country | Link |
|---|---|
| AU (1) | AU753982B2 (en) |
| CA (1) | CA2295230C (en) |
| EA (1) | EA000568B1 (en) |
| RU (1) | RU2132950C1 (en) |
| UA (1) | UA63927C2 (en) |
| WO (1) | WO1999041489A1 (en) |
| ZA (1) | ZA991096B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2454541C1 (en) * | 2010-12-27 | 2012-06-27 | Виктор Сергеевич Федотенко | Drying method of rock-coal massif |
| RU2471988C1 (en) * | 2011-05-05 | 2013-01-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Санкт-Петербургский государственный горный университет" | Method for combined mining of fields |
| RU2515649C1 (en) * | 2013-02-06 | 2014-05-20 | Федеральное Государственное Автономное Образовательное Учреждение Высшего Профессионального Образования "Сибирский Федеральный Университет" | Method of combined development of elongated deposits of steeply pitching seams |
| CN104074521B (en) * | 2014-06-20 | 2016-05-04 | 中国矿业大学 | A kind of end is helped coal seam Long-distance Control driving recovery method |
| CN111927459B (en) * | 2020-07-30 | 2021-12-28 | 西部矿业股份有限公司 | Mining method for assisting upper-layer rock drilling roadway tunneling by upward sector-shaped mesoporous blasting |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4103972A (en) * | 1973-12-03 | 1978-08-01 | Kochanowsky Boris J | Open pit mine |
| SU812922A1 (en) * | 1978-09-21 | 1981-03-15 | Среднеазиатский Научно-Исследовательскийи Проектный Институт Цветнойметаллургии | Method of consolidating slopes |
| SU717335A1 (en) * | 1979-02-23 | 1980-02-25 | Днепропетровский Ордена Трудового Красного Знамени Горный Институт Им. Артема | Method of stripping mineral fields at open-cast mining |
| SU1461930A1 (en) * | 1987-07-27 | 1989-02-28 | Всесоюзный Научно-Исследовательский, Проектный И Конструкторский Институт Горного Дела Цветной Металлургии | Method of combined mining of mineral deposits |
| AU7296594A (en) * | 1993-09-14 | 1995-03-30 | Bhp Australia Coal Limited | Mining system |
| US5782539A (en) * | 1995-11-16 | 1998-07-21 | Peterson; Randall D. | Wall-to-wall surface mining process |
-
1998
- 1998-02-12 RU RU98101994/03A patent/RU2132950C1/en not_active IP Right Cessation
- 1998-08-27 CA CA002295230A patent/CA2295230C/en not_active Expired - Fee Related
- 1998-08-27 UA UA99063402A patent/UA63927C2/en unknown
- 1998-08-27 AU AU92855/98A patent/AU753982B2/en not_active Ceased
- 1998-08-27 WO PCT/RU1998/000276 patent/WO1999041489A1/en active IP Right Grant
-
1999
- 1999-02-04 EA EA199900086A patent/EA000568B1/en not_active IP Right Cessation
- 1999-02-11 ZA ZA9901096A patent/ZA991096B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| EA000568B1 (en) | 1999-12-29 |
| WO1999041489A8 (en) | 2000-02-17 |
| AU9285598A (en) | 1999-08-30 |
| AU753982B2 (en) | 2002-10-31 |
| WO1999041489A1 (en) | 1999-08-19 |
| CA2295230A1 (en) | 1999-08-19 |
| UA63927C2 (en) | 2004-02-16 |
| EA199900086A2 (en) | 1999-08-26 |
| ZA991096B (en) | 1999-09-14 |
| RU2132950C1 (en) | 1999-07-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1162345B1 (en) | R. b. yun's method for the exploitation of open-air mining fields | |
| NZ248291A (en) | Inserted post and concrete floor undercut excavation method | |
| CA1044708A (en) | Method for mining of rock or ore according to the block caving principle in massive formations | |
| CA2295230C (en) | Method for the combined exploitation of mining fields | |
| JP3750043B2 (en) | Large section underground hollow quarry | |
| RU2248448C1 (en) | Method for extraction of steep-falling deposits of weak ores | |
| Okubo et al. | Underground mining methods and equipment | |
| RU2099524C1 (en) | Combined method of mining of formation of steeply dipping coal seams | |
| RU2172837C2 (en) | Method of protection of in-bed mine workings | |
| Valgma et al. | Low depth mining in Estonian oil shale deposit-Abbau von Ölschiefer in Estland | |
| Schissler | Coal mining, design and methods of | |
| RU2187646C2 (en) | Method of opencast mining of beded mineral deposits | |
| CN109403972A (en) | Sublevel open stoping afterwards filling mining method | |
| RU2762170C1 (en) | Method for developing thin and low-powered steel-falling ore bodies | |
| SU1093828A1 (en) | Method of working thick coal seams susceptible to gas-dynamic phenomena | |
| Vasilyev et al. | Justification of underground gold placer development parameters for the Konevinsky deposit | |
| RU2755287C1 (en) | Method for developing thin and low-powered steel-falling ore bodies | |
| Gogolewska | Surface and underground mining technology | |
| Tapsiev et al. | Extraction of gold-bearing ore from under the open pit bottom at the Makmal deposit by room-and-pillar mining with backfill made of production waste | |
| SU1188326A1 (en) | Method of mining bedded deposits | |
| Gardner | Tunnel support in South African mines | |
| Chebanov et al. | Rationale of effective technological scheme for granite quarry mining | |
| Bullock | Planning the Underground Mine | |
| RU2038479C1 (en) | Mineral deposit upland part exploitation method | |
| Skipochka et al. | The concept of risk-based technical solutions for the protection of ore and non-ore mine workings |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |