Method of opening deep pits

FIELD: mining.

SUBSTANCE: method comprises making ramps on the border of working and final pit edges for heavy-duty dump trucks, with the placement of the ramp part on its width on the subrepose remnant of rocks, and on the other part - on the final pit edge. On the working pit edge parallel to the formed ramp for heavy-duty dump trucks the ramp is made for light-duty dump trucks. When it is impossible to locate on the board the ramp for heavy-duty dump trucks under conditions of decreasing with depth career space, a part of this ramp, located on the subrepose remnant of the rocks, is developed with transportation of rock mass to the surface by light-duty dump trucks on the ramp on the working pit edge. On the part of the ramp for heavy-duty dump trucks, located at the final pit edge the ramp is formed for light-duty dump trucks. The ramp for light-duty dump trucks from the working edge is moved to the final pit edge, with the formation on it of the steep ramp for movement on it of dump trucks with articulated frame. The rock mass from the steep ramp is transported to the surface on the ramp for light-duty dump trucks on the final pit edge. At the lower part of the pit under conditions of confined space the steep ramp for dump trucks with articulated frame is formed in a known manner.

EFFECT: improving the efficiency of the development of deep-seated deposits.

4 dwg

 

The invention relates to the mining industry and can be used in open-develop deep, steeply inclined, with the small area plan in the lower part of the deposits of mineral deposits.

There is a method of opening quarries, consisting in carrying out on the pit wall congresses for dump trucks big and small capacity, since the output of the working of the pit at the end of the path from the surface to the boundary of the worker and the end boards on a temporary pillar rocks form the Congress for large-capacity dump trucks. Parallel to this, the exit surface on the desktop Board career form the Congress for dump trucks light duty. When the further formation of the Congress to dump a large load due to the decreasing depth of the career space will become impossible, pillar with Congress to develop with the use of dump trucks light duty and haulage by Congress for these trucks, which as repayment of the working ledges formed on the target pit from the surface to the horizon project depth career [1].

In common with the claimed technical solution features are "consisting in carrying out on the pit wall congresses for large trucks and mA is the first duty since the beginning of the working out of the pit at the end of the path from the surface to the boundary of the worker and the end boards on a temporary pillar rocks form the Congress for dump trucks large-capacity, parallel to this, the exit surface on the desktop Board career form the Congress for dump trucks light duty, when the further formation of the Congress to dump a large load due to the decreasing depth of the career space will become impossible, pillar with Congress to develop with the use of dump trucks light duty and haulage by Congress for these trucks".

However, the development of deep-seated mineral deposits with the small area plan in the lower part of the deposits of deep quarries conventions for conventional wheeled trucks with capacity of 30...40 t do not fit into the small volume of the career space in the lower portion of the pit. In order to place them on Board the career requires excavation of the additional overburden from scattering of the final pit. In addition, the safety condition in deep pits, you must have two out on the surface.

There is also known a method of conducting a steep trench exposing horizons with limited space for dump trucks, sposobnastyami increased bias [2].

In common with the claimed technical solution features are "the deepest horizons career, space-constrained open in a known manner with the conduct of a steep exit for trucks, overcoming the increased bias". These dump trucks are the trucks with articulated frame.

However, the development of these horizons with the use of dump trucks with articulated effectively can be conducted only with the haulage to the surface by a single abrupt exit.

The objective of the invention is to increase the efficiency of the development of deep-seated mineral deposits, the lower part of the reservoir which has a small area in the plan, due to the new way of forming in the pit of congresses for conventional wheeled dump trucks and dump trucks with articulated frame that allows you to develop the lowest cost for the excavation of overburden and providing two exit to the surface.

This result is achieved in that in the known method of opening quarries, consisting in carrying out on the pit wall congresses for dump trucks big and small capacity, since the output of the working of the pit at the end of the path from the surface to the boundary work and end flanges on time is hinnon the pillar rocks form the Congress for dump trucks heavy vehicles, parallel to this, the exit surface on the desktop Board career form the Congress for dump trucks light duty, when the further formation of the Congress to dump a large load due to the decreasing depth of the career space will become impossible, pillar with Congress to develop with the use of dump trucks light duty and haulage by Congress for these trucks, the deepest horizons career, space-constrained open in a known manner with the conduct of a steep exit for trucks, overcoming the increased slope, on a temporary pillar rocks are placed only part of the Congress on its width, and the other part of the Congress placed on the target Board career, when the development of the Congress develop only part of the Congress, located on a temporary pillar rocks, and on the part of the Congress on the target Board career form the Congress for dump trucks light duty, with the rock mass from development pillar under part of the Congress is transported to the surface by Congress on the desktop Board career, take the exit on the desktop Board are placed on the end wall of the open pit, with its slope increases to steep for movement thereon trucks with articulated, the rock mass from forming steep Congress Avtonomov the Lamy low payload is transported to the surface of the already formed on the target Board career Congress for dump trucks light duty.

The method is illustrated graphically, where Fig.1 presents a quarry with a wide road Congress, formed partially across the width 1 on a temporary pillar rocks, and part 2 on the final pit and take exit 3 for dump trucks light duty desktop Board career; Fig.2 - quarry with conventions for dump trucks light duty placed on the target 2 and the work 3 the pit; Fig.3 - the quarry junction 2 for dump trucks light duty and exit 4 for dump trucks with articulated located on the end and working the pit; Fig.4 - quarry waste as the exit 2 for dump trucks light duty and exit 4 for dump trucks with articulated frame.

The method includes the following operations: holding on a temporary pillar rocks on the border of the worker and the end of the pit exit for trucks heavy vehicles, with the placement of part 1 of the Congress by its width on a temporary pillar rocks, and the other part 2 - on the final Board career, holding on the desktop Board career already formed in parallel to the Congress to dump a big load exit 3 for dump trucks light duty; operation of part 1 of the Congress for dump trucks heavy vehicles, located on the ASU is nom the pillar rocks, with haulage to the surface of the dump trucks light duty exit 3 on the desktop Board career; moving junction 3 working flanges on the end wall of the open pit with the formation thereon of a steep exit 4 for movement thereon dump trucks articulated dump truck haulage from the formation of steep Congress trucks light duty exit 2 on the target Board career, holding in the lower part of the quarry in confined spaces steep Congress for dump trucks with articulated in a known manner.

The method consists in the following. On a temporary pillar rocks on the border of the worker and the end of the pit hold Congress to dump a large load capacity, with the placement of part 1 of the Congress by its width on a temporary pillar rocks, and the other part 2 - on the final Board career. On the desktop Board career already formed in parallel to the Congress for dump trucks large-capacity carry out exit 3 for dump trucks light duty. When in the lower portion of the pit exit for large-capacity dump trucks will no longer fit into the limited career space, part 1 of this Convention, located on a temporary pillar rocks, work with haulage apowersoft trucks light duty exit 3 on the desktop Board career. In part 2 of the Congress, which is located on the target Board career form the Congress for dump trucks light duty. Take exit 3 from your side move to the end wall of the open pit with the formation thereon of a steep exit 4 for movement thereon trucks with articulated, while the rock mass is transported by the Congress for 2 trucks light duty on the target Board career. In conditions of limited space in the lower part of the quarry steep Congress for dump trucks with articulated carried out in a known manner.

The use of the proposed method of opening will increase the efficiency of the development of deep-seated mineral deposits, the lower part of the reservoir which has a small area in the plan, due to the new way of forming in the pit of congresses for conventional wheeled trucks and steep exit for trucks with articulated frame. It allows you to develop the lowest cost for the excavation of overburden.

Sources of information

1. Yakovlev, C. L., Bersenev C. A., Bahturin Y. A. Patent RF №2398110, AS 41/26. The way the opening of the quarries. Application No. 2009106307, Appl. 24.02.2009, publ. 27.08.2010. Bull. No. 24.

2. Bersenev C. A., A. Glebov Century, Kurmaev D. Patent RF №2376471, AS 41/26. Way cool trench. Application No. 2008117529, Appl. 0.04.2008, publ. 20.12.2009. Bull. No. 35.

Method of tapping deep pits, consisting in carrying out on the pit wall congresses for dump trucks big and small capacity, since the output of the working of the pit at the end of the path from the surface to the boundary of the worker and the end boards on a temporary pillar rocks form the Congress for dump trucks large-capacity, parallel to this, the exit surface on the desktop Board career form the Congress for dump trucks light duty, when the further formation of the Congress to dump a large load due to the decreasing depth of the career space will become impossible, pillar with Congress to develop with the use of dump trucks light duty and haulage by Congress for these dump trucks, the deepest horizons career, space-constrained open in a known manner with the conduct of a steep exit for trucks, overcoming the increased slope, characterized in that at the time the pillar rocks are placed only part of the Congress on its width, and the other part of the Congress placed on the target Board career, the development of the Congress develop only part of the Congress, located on a temporary pillar rocks, and on the part of the Congress on the target Board career form the Congress of the La trucks light duty, this mountain mass from development pillar under part of the Congress is transported to the surface by Congress on the desktop Board career, take the exit on the desktop Board are placed on the end wall of the open pit, with its slope increases to steep for movement thereon trucks with articulated, the rock mass from forming steep Congress trucks light duty transported to the surface of the already formed on the target Board career Congress for dump trucks light duty.



 

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FIELD: mining.

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EFFECT: higher efficiency, higher productiveness.

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EFFECT: higher efficiency.

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EFFECT: higher efficiency.

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SUBSTANCE: method includes extraction of quarry to planned depth in stages with construction f boards with parameters, allowed from stability condition, shutting boards, finishing mineral resource massif. Building and shutting of temporary boards during extraction of steep layers of next level after change of order of extraction of opening and ore zones is started after construction and spacing in center of cut of well-like mine with vertical shelves, with parameters, which are provided for by minimal radiuses of rounded edges enough for movement of rock via spiral chutes to surface to outer dumps, with narrowing space towards bottom at level of opened level of deep portion of deposit with lesser total coefficient of opening of stage and finally board is constructed by steep vertical shelves in deep zone.

EFFECT: higher efficiency.

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