RU2132950C1 - Method for combination development of deposits - Google Patents

Method for combination development of deposits Download PDF

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Publication number
RU2132950C1
RU2132950C1 RU98101994/03A RU98101994A RU2132950C1 RU 2132950 C1 RU2132950 C1 RU 2132950C1 RU 98101994/03 A RU98101994/03 A RU 98101994/03A RU 98101994 A RU98101994 A RU 98101994A RU 2132950 C1 RU2132950 C1 RU 2132950C1
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RU
Russia
Prior art keywords
horizon
reserves
quarry
safety
prisms
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RU98101994/03A
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Russian (ru)
Inventor
Руслан Борисович Юн (KZ)
Руслан Борисович Юн
В.И.(RU) Борщ-Компониец
В.И. Борщ-Компониец
Original Assignee
Руслан Борисович Юн
Борщ-Компониец Виталий Иванович
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Priority to RU98101994/03A priority Critical patent/RU2132950C1/en
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Publication of RU2132950C1 publication Critical patent/RU2132950C1/en

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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21CMINING OR QUARRYING
    • E21C41/00Methods of underground or surface mining; Layouts therefor
    • E21C41/26Methods of surface mining; Layouts therefor

Abstract

FIELD: mining industry. SUBSTANCE: method can be used for working mineral deposits irrespective of their capacity and lying angle. According to method, deposit is opened by means of underground workings. Main reserves of deposit are extracted by opencast operations with formation of protective berms on quarry benches. In plan elevation, reserves of each level are worked by blasting explosive charges in dipping blast-holes in direction of quarry sides with formation of protective prisms at its design contour. Cutting of mineral reserves is performed at concluding stage of operations at given level with creation of vertical slope or approximate to vertical slope within boundaries of given level. Broken rock mass appeared from destruction of protective prisms is released to underground hauling drifts in underlying level. Then rock mass is extracted to surface. Rock mass near contour is consolidated by injection and/or by installing preliminarily directed anchors. Application of aforesaid method allows for reducing scale of opencast operations. EFFECT: higher efficiency. 4 cl, 2 dwg

Description

 The invention relates to the mining industry and can be used for mining mineral deposits, regardless of their capacity and angle.

 There is a method of combined development of deposits, including conducting opencast mining using self-propelled machinery, bypassing the rock mass into previously excavated mine workings and subsequently issuing it along a conveyor slope to the surface (U.S. Patent No. 4,103,972 class. 299/18, 1978).

 A disadvantage of the known solution is the impossibility of mining significant deposits in terms of area and significant volumes of stripping operations.

 Closest to the invention is a method of combined development of deposits, including opening a deposit with a vertical trunk and cross-shafts and working out the main reserves by open cast mining. Within the horizon, mining operations begin with the collapse and release of the rocks of the hanging side, after which they are developing reserves. Blasting holes are drilled for ore breaking from the bottom of the pit, the rock mass is transported along the mine workings of the worked out horizon (A.S. USSR N 1461930 class E 21 C 41/06, 1989).

 A disadvantage of the known solution is a significant amount of overburden due to the impossibility of forming a quarry with a steep end angle of the side.

 The invention is aimed at reducing the volume of stripping operations due to the steep angle of the pit.

 This is achieved by the fact that in the method of combined development of deposits, including the opening of deposits by underground mines and the development of main reserves by open pit mining with the formation of safety berms on the ledges of the quarry, drilling downholes from the surface of the ledges and transporting the rock mass through the underground workings of the worked-out horizon to the surface, the plan, the development of reserves of each horizon is carried out in the direction of the sides of the quarry with the formation of safety prisms at its design contour a, the breaking of which is carried out at the final stage of work on the horizon with the formation of a vertical or near-vertical slope within the horizon, and the rock mass that was broken off is transferred to underground transport workings of the underlying horizon, and then extracted to the surface, while the main reserves of the horizon are mined from ore pass to the quarry with the use of self-propelled equipment, remote-controlled equipment is used to work out safety prisms, the reserves of the latter are recovered by selective methods, and the open pit safety berm is formed into several horizons, the rocks beyond the open pit outline located within the displacement zone are reinforced with prestressed anchors and / or injection of cementitious mortars through wells drilled through the body of the safety prisms, and at various depths therein monopolize the ends of steel ropes placed on the earth's surface and anchored outside the zone of movement, moreover, the drilling of safety prisms carry out the horizon flax or ascending wells.

 The foregoing work procedure allows the formation of a vertical or close to vertical angle of the board on the horizon. This became possible due to the fact that the safety prisms formed on the worked horizon along the entire side of the board prevent emergencies due to possible local rock collapse in conjunction with the established procedure for excavating the reserves of these safety prisms, and additional measures to increase the stability of the zone in the marginal massif rocks provide stability for the entire period of operation of the mining enterprise.

 Figure 1 presents a diagram of the implementation of the method in the conditions of mining a powerful steep-dipping ore deposits, opened by means of a spiral exit, with the formation of safety berms on each horizon; in FIG. 2 - the same when forming a safety berm into two horizons and strengthening the outflow rock mass.

 The method is implemented as follows.

 The opening of the field is carried out by means of working out 1, for example, a spiral exit for self-propelled equipment located outside the shift zone and horizontal or inclined workings (arrivals) 2. As an opening workout 1, an inclined shaft equipped with a conveyor, or a vertical one, can also be used skip lift. Opening of deposits of significant area is possible with several workings 1.

 In the case of mineral distribution to a considerable depth, the development of the field’s reserves is carried out by several horizons 3. At the level of each horizon 3, ore passes 4 pass from the mine workings 2 to the overlying horizon.

 The development of the deposit is carried out by career ledges, while the reserves of each horizon 3 are drilled from the surface of these ledges by descending wells 5, by blasting of which the main reserves of horizon 3 are blasted. The broken rock mass is transported through races 2, for example, using self-propelled equipment, and then by a spiral exit 1 delivered to the surface.

 In plan, the extraction of the main reserves of horizon 3 is carried out in the direction of the sides 6 of the quarry, leaving along their perimeter temporary safety prisms 7 wide enough to ensure safe working conditions for the entire period of workers' presence on this horizon. Alternatively, it is possible to maintain a recess from the ore pass 4, which is used at the initial stage as a compensation gap.

 In order to keep the near-mass array 8 from collapsing during the period of work in the quarry, a reinforcing belt 9 can be formed by injecting with cementing solutions or resins of rocks the zone of the proposed displacement 10 at the final stage of the development of the field, as well as by installing prestressed anchors 11, the locks of which are placed behind outside the zone of the proposed displacement 10. For the same purpose, at various depths in the rocks of the zone of the proposed displacement 10, the ends of the steel ropes 12 can be monolithic, used on the earth's surface and anchored outside the zone of displacement 10. Under the ropes 12 laid on the surface, until they are tensioned, lay the used rails, pipes, etc. to prevent penetration by ropes of 12 soils on the surface in the process of applying loads to them.

 The fastening compositions can be injected both before the installation of the anchors 11, and after. In the case of injection of solutions prior to the installation of anchors 11, additives may be included in their composition that slow down the hardening process. The amount and composition of these additives are selected from the condition of the onset of polymerization of the injected composition after tensioning the anchors 11. In this case, the strength characteristics of the hardened mass will be higher due to extrusion of excess mortar from the cracks and deeper processing of the fractured rock mass from this solution.

 Injection of rocks for the reinforcing belt 9 is carried out using horizontal or inclined wells 13 drilled through the body of the safety prisms 7.

 The amount, amount of tension and the bearing capacity of prestressed anchors 11 are determined based on the conditions for ensuring the stability of the side 6 of the quarry during the life of the mining enterprise.

 The location of the ore pass 4 of horizon 3 is determined from the condition of the location of its mouth at the boundary of the safety prism 7 at the bottom of the mined open pit space.

 After the extraction of the main reserves of horizon 3, the remaining mineral reserves are mined in the safety prisms 7 with the formation of the final design contour 6 of the quarry. Their array is pre-drilled with horizontal wells 14 by means of drilling carriages installed at the bottom of the bottomhole, or by fans of ascending wells (not shown) drilled from the bottom of the safety prisms 7. Drilling of safety prisms with 7 fans of ascending wells is also possible from specially completed for this approach (not shown ) or transport workings (arrivals) 2. Drilling and blasting when breaking safety prisms 7 are carried out with the formation of the final surface of the formed side 6 of the horizon 3 vertical or close to vertical within this horizon.

 At the final stage of mining reserves of horizon 3, the beaten-off rock mass of safety prisms 7 is transported to the ore pass 4 by means of equipment with remote control and transferred to the lower horizon 3, after which it is transported to the surface by workings 2 and a spiral exit 1.

 In the case of the location of the safety prisms 7 on the border "ore" - "rock" carry out selective excavation.

 In the process of mining horizon 3, the side 6 of the quarry is formed with a safety berm 15, the width of which is determined from the condition of providing sufficiently reliable protection for 3 people and equipment located on the underlying mining horizons from falling stones and accumulating talus material for the duration of the work. These berms do not imply their use for transport or other purposes other than those indicated, which ensures their minimum width and maximum total steepness 6.

 In some cases, with very stable host rocks, it is advisable to form one safety berm 15 for several horizons 3.

Claims (5)

 1. The method of combined development of deposits, providing for the opening of its underground workings and development of the main reserves by open cast mining with the formation of safety berms on the ledges of the quarry, drilling downhill wells from the surface of the ledges and transporting the rock mass through the underground workings of the worked out horizon to the surface, characterized in that the plan, the development of reserves of each horizon is conducted in the direction of the sides of the quarry with the formation of safety prisms at its design contour, which is carried out at the final stage of work on the horizon with the formation of a vertical or near-vertical slope within the horizon, and the rock mass that was beaten off is transferred to underground transport workings of the underlying horizon, and then removed to the surface.
 2. The method according to claim 1, characterized in that the main reserves of the horizon are mined from the ore pass to the pit side using self-propelled equipment, remote-controlled equipment is used to work out the safety prisms, the reserves of the latter are extracted by selective methods, and the safety bore of the pit side is formed into several horizons.
 3. The method according to claim 4, characterized in that the rocks beyond the contour of the quarry located within the displacement zone are reinforced with prestressed anchors and / or injection of cementitious mortars through wells drilled through the body of the safety prisms.
 4. The method according to claim 1 or 3, characterized in that the ends of the steel ropes placed on the earth's surface and anchored outside the shear zone are additionally monolithic in the rocks beyond the contour of the quarry at various depths.
 5. The method according to claim 1, characterized in that the drilling of the safety prisms is carried out by horizontal or ascending wells.
RU98101994/03A 1998-02-12 1998-02-12 Method for combination development of deposits RU2132950C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU98101994/03A RU2132950C1 (en) 1998-02-12 1998-02-12 Method for combination development of deposits

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
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
UA99063402A UA63927C2 (en) 1998-02-12 1998-08-27 R.b. yun's method for combined deposit development
AU92855/98A AU753982B2 (en) 1998-02-12 1998-08-27 R.B. Yun's method for the combined exploitation of mining fields
CA 2295230 CA2295230C (en) 1998-02-12 1998-08-27 Method for the combined exploitation of mining fields
EA199900086A EA000568B1 (en) 1998-02-12 1999-02-04 A method of combined mining of deposits
ZA9901096A ZA9901096B (en) 1998-02-12 1999-02-11 A method of combined mining of yuna ore basin.

Publications (1)

Publication Number Publication Date
RU2132950C1 true RU2132950C1 (en) 1999-07-10

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RU98101994/03A RU2132950C1 (en) 1998-02-12 1998-02-12 Method for combination development of deposits

Country Status (7)

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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) ZA9901096B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN104074521A (en) * 2014-06-20 2014-10-01 中国矿业大学 End slope coal bed remote control excavating mining method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
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

Family Cites Families (6)

* Cited by examiner, † Cited by third party
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

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN104074521A (en) * 2014-06-20 2014-10-01 中国矿业大学 End slope coal bed remote control excavating mining method
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

Also Published As

Publication number Publication date
AU753982B2 (en) 2002-10-31
ZA9901096B (en) 1999-09-14
EA199900086A2 (en) 1999-08-26
AU9285598A (en) 1999-08-30
UA63927C2 (en) 2000-08-15
WO1999041489A1 (en) 1999-08-19
CA2295230C (en) 2004-05-25
EA000568B1 (en) 1999-12-29
CA2295230A1 (en) 1999-08-19
WO1999041489A8 (en) 2000-02-17

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Effective date: 20050213