Method and device for rock transportation from pit

FIELD: mining industry, particularly open cast mining.

SUBSTANCE: method involves loading tanks at lower horizon during tank unloading at upper horizon and lowering empty tanks from upper horizon during loaded tank lifting from lower horizon; providing additional sites for tank loading at lower horizon and corresponding additional sites for tank unloading at upper horizon; laying cable in zigzag manner so that the cable passes along loading and unloading sites and creates pulling branches; connecting tank with aerostat to each pulling branch. Tanks located at upper and lower horizons are fastened to next nearest branch so that distances between loading and unloading sited along the branches are equal one to another. Device for above method realization is also disclosed.

EFFECT: increased capacity.

2 cl, 2 dwg

 

The invention relates to mining works and can be used for open development of mineral deposits for transportation of rocks from the quarry.

There is a method of transportation of rock mass, including a connection horizons rope, zapasovany on the winch located on the upper horizon, fixed to the rope capacity with the balloon, the loading capacity on the lower horizon portion of the rock mass and its movement from the bottom up, unloading and return of the vessel, the weight portions of the rock mass is equal to the free capacity of the balloon, and moving containers make the winch. (Patent of Russian Federation №2052115, IPC 6 E 21 41/26)

The disadvantage of the invention is the low performance due to idling.

There is a method of transportation of rock mass, including the connection of the bearing horizons by flexible connections, fixed to flexible relations capacity with balloon can travel on them, unloading-loading capacity and its movement between the horizons, transportation establish flexible traction link between the vessel with balloon and other capacity with the balloon, and the unloading and loading is carried out on the upper and lower horizons to the sum of the lifting force of the lower balloon and weight of the cargo loaded on the upper horizon, p is elisala the sum of the lifting force of the upper balloon weight loaded on the lower horizon. (Patent of Russian Federation №2114308, IPC 6 E 21 41/26) Technology transportation of rock mass according to this invention is as follows:

1. Arrange space for unloading-loading of the containers on the lower and upper levels.

2. Make unloading-loading containers at the same time horizons.

3. Make a comparison of the containers by weight.

4. Provide a weight ratio of loads and lifting forces balloons.

5. Make the change of horizons of containers.

However, this method can be used only in the case when there is a possibility of transportation of cargo, for example, overburden at the quarry, and also devices for comparing the weight relationship of the load and the lifting force of the balloon.

The closest in technical essence to the proposed method is the method of transportation of rock from the quarry through the organization of places for loading and unloading of vessels with a balloon and the changing horizons of containers which can arrange a place for loading containers on the lower horizon and unloading of containers on the upper horizon, and during the loading of containers on the lower horizon produce unloading of containers on the upper horizon and during lifting of loaded containers from the lower horizon lower empty vessel with upper Gori is Ontario (see EN 98122568, CL E 21 41/26, publ. 27.09.2000).

The disadvantage of the invention is the low performance.

The objective of the invention is the elimination of functional dependencies way from mandatory release cargo in the quarry and adjust the ratio of rock mass in containers and lifting power of the balloon.

To achieve these objectives we propose a method of transportation of rock from the quarry through the organization of places for loading and unloading of vessels with a balloon and the changing horizons of capacities, including the loading of the containers on the lower horizon during unloading of containers on the upper horizon and the descent of the empty containers from the upper horizon during lifting loaded containers from the lower horizon. Organize additional space for loading containers on the lower horizon and, accordingly, additional space for unloading containers on the upper horizon, through the designated loading and unloading the zigzag laid rope with education traction branches, each of which is fixed to the vessel with the balloon and the vessel on the lower and upper horizons fix through one branch, and the distance between the places of loading and places unloading of containers along the branches are equal.

The application of the proposed method eliminates the disadvantages of the prototype, to extend the functionality.

Implementation of the proposed method is possible, for example, by using the device shown in figure 1 and 2. As the prototype used the device described in the description of the application EN 98122568, CL E 21 41/26, publ. 27.09.2000.

The prototype includes the loading and unloading of the rock mass, pulling the rope attached to it cargo tanks with balloons, blocks and drive.

The disadvantage of the invention is the low performance.

The task of the invention is to improve the device performance of the transportation of rocks from the quarry.

This object is achieved in that the device for implementing the method of transportation of rock mass contains the loading and unloading of the rock mass, pulling the rope attached to it cargo tanks with balloons, blocks and drive. And the rope are laid in the form of zigzag education transport branches, each of which is mounted a container of the balloon and the vessel on the lower and upper horizons secured through one branch, and the distance between the places of loading and places unloading of containers along the branches are equal.

Figure 1 shows the device in the projection on the wall of the open pit, figure 2 shows a section along the arrow a-a figure 1.

The device includes a loading place 1 and place of unloading 2, blocks 3, the pulling rope 4, traction branches 5, container 6, erotate 7.

Through the load 1 and the unloading position 2 with 3 blocks laid in zigzag rope 4 with the formation of traction branches 5, to which is fixed a capacity of 6 with balloons 7. The number of branches can be arbitrarily large. Each load corresponds to the place of unloading of the containers, while the distance between the loading and unloading places along the branches are equal, allowing all vessels to simultaneously change their horizons. The drive rope can close on itself ends of the traction rope, forming a closed line, as shown in figure 1, or at the ends of the rope can stand separate drives, alternately pulling the rope in his side.

After loading the containers located on the lower horizon, a mass of rock is activated actuator that moves the rope with tanks and balloons on the top of the horizon, and unloaded containers are moved at this time to load on the lower horizon. The process is sequential change of horizons of containers device. After unloading containers the cycle repeats.

Application of the proposed device allows to achieve a high performance transport of rock from the quarry and to resolve complex additional weight of the machine.

1. The method of transportation of rock from the quarry through the organization of places for loading and is agresco vessels with a balloon and the changing horizons of tanks enable loading of the containers on the lower horizon during unloading of containers on the upper horizon and the descent of the empty containers from the upper horizon during lifting loaded containers from the lower horizon, characterized in that organize additional space for loading containers on the lower horizon and, accordingly, additional space for unloading containers on the upper horizon, through the designated loading and unloading the zigzag laid rope with education traction branches, each of which is fixed to the vessel with the balloon and the vessel on the lower and upper horizons fix through one branch, and the distance between the places of loading and places of unloading containers along the branches are equal.

2. The device for implementing the method of transportation of rock mass containing the designated loading and unloading of the rock mass, pulling the rope attached to it cargo tanks with balloons, blocks and actuator, characterized in that the rope is laid in the form of zigzag education transport branches, each of which is mounted a container of the balloon and the vessel on the lower and upper horizons secured through one branch, and the distance between the places of loading and places unloading of containers along the branches are equal.



 

Same patents:

FIELD: quarry vehicles.

SUBSTANCE: invention relates to devices for lifting and lowering dump-trucks at opencast mining. Device is provided with dump-truck lowering line parallel to lifting line with drive sprockets in head and middle parts of both lines for mechanical engagement of said lines. Each gripping and up and down transporting device for dump-trucks is made ion form of twin levers with rollers of free ends hinge-connected to two leaf and-roller chains and arranged between said chains for turning twin levers in vertical plane and shifting rollers along guides arranged under guides for running rollers of traction chains. Twin levers are interconnected by platform for front wheels of dump-truck. Said platform are arranged with clearances over tracks, each being provided with curvilinear stop from side of tension sprockets on lifting line for engagement with front wheels of dump-truck and with two stops on lowering line for arranged of front wheels of dump-truck between said stops. Lips are made in quarry and on its flank in zones of entry of dump trucks on lifting and lowering lines over tension and drive sprockets. Guides for traction chains and lever rollers are made curvilinear to provide free getting of dump-trucks on track. Mechanical couplings of drive sprockets of both lines are made in form of reduction gear and toothed pair coupled with electric motor.

EFFECT: provision of lifting of loaded dump-trucks from quarry to opencast flank with simultaneous lowering of empty dump-trucks into quarry at continuous transportation, brought to minimum consumption of metal and energy at carrying out said operations.

3 cl, 6 dwg

FIELD: transport engineering; quarry dump trucks.

SUBSTANCE: invention relates to devices for lifting and lowering dump-trucks when carrying out opencast mining. Proposed device for lifting dump-truck to flank of opencast contains, in addition of lifting line, a lowering line, both lines are parallel, being mechanically coupled by drive sprockets in head and middle parts of both lines. Each device for gripping and transporting of dump-trucks up and down is made in form twin levers with rollers hinge-connected to two leaf-and-roller chains and arranged in between for turning twin levers in vertical plane and moving rollers along guides arranged under guides for running rollers of traction chains. Twin levers are interconnected by platform to arrange front wheels of dump0truck. Platforms are arranged with clearances over tracks and are provided with curvilinear stop on lifting line from side of tension sprocket for engagement with front wheels of dump-truck and are made on lowering line with two stops to arranged front wheels of dump-truck between said stops. Cavities with inclined bottom to said of tension sprocket and wall square to surface of track are arranged on surface of lifting line track at definite step. Each platform of lifting line is furnished with shoe hinge-secured on platform symmetrically to longitudinal axis of lifting line for engagement of free end of shoe with surface of track at normal operation and, at break of traction chains, engagement of free end with wall of cavity, and free end of curvilinear form, with stop of platform.

EFFECT: provision of lifting loaded dump-trucks to flank of opencast and simultaneous lowering of empty-dump trucks into opencast with possibility of holding loaded dump-truck on lifting line in case of breaks of traction chains.

2 cl, 7 dwg

FIELD: transport engineering; quarry dump-trucks.

SUBSTANCE: invention relates to devices for lifting and lowering dump-trucks, namely, to complexes for lifting and lower dump-trucks at opencast mining. Proposed device for lifting dump-truck to flank of opencast contains, in addition to lifting line, lowering line parallel to lifting line, both lines being coupled by drive sprockets in head and middle parts of both lines. Each gripping device for gripping and transporting of dump-trucks up and down is made in form twin levers with rollers hinge-connected two leaf-and-roller chains and arranged in between to provide movement of roller along guides. Platform is secured on levers to arranged rear wheels of dumps-truck on lifting line and front wheels, on lowering line. Platform is arranged with clearances over tracks and on lifting line it is provided with curvilinear stop from side of tension sprocket for engagement with rear wheel of dump-truck, and on lowering line it is provided with two stops for arrangement of front wheels of dump-truck between the stops. Tracks on inclined sections are arranged to move front wheels on lifting line and rear wheels on lowering line at horizontal position of dump-trucks. Lips are arranged in opencast and on its flank in zones of entry of dump-trucks on lifting line and lowering line over tension and drive sprockets, and guides for traction chains and rollers of levers are made curvilinear to provide free getting of dump-truck wheels onto tracks.

EFFECT: provisions of lifting of loaded dump-trucks to flank of opencast and simultaneous lowering of empty-trucks into opencast at continuous transportation and reduced to minimum metal usage and energy consumption when carrying out said operation.

3 cl, 6 dwg

FIELD: earth-moving equipment, particularly machines for ground cutting, pit excavation for hydraulic structure, large-scale object building, as well as for mineral deposit development.

SUBSTANCE: ditching and transportation rig comprises basic chassis connected with earth-moving module and with transportation-handling devices, which move ground in vertical and horizontal directions. Earth-moving module is made as bucket rotary drum secured by means of vertical and horizontal hinges, as well as control-rods to the basic chassis so that the bucket rotary drum may rotate in vertical and horizontal planes and overhanging length thereof may be changed. Device is provided with continuous-type conveyer unit made as auger system and as telescopic pipe pivotally connected with transportation-handling device, which move ground in horizontal direction. Horizontal auger is located inside bucket rotary drum and is offset with respect to drum axis so that auger axis is parallel to drum axis. The horizontal auger is transversal to inclined auger having lower end installed under outlet end of horizontal auger. Upper end of inclined auger is pivotally fastened to upper telescopic pipe section. Transportation-handling device, which moves ground in horizontal direction, is made as endless band installed on length-adjustable telescopic sliding frame, which may change ground displacement distance by means of tightening rollers. Rollers have pins installed at different heights sliding in telescopic frame grooves. The telescopic frame has flanging. Lower telescopic pipe section is provided with rotary hinge connected to telescopic frame flanging so that rotary hinge may perform longitudinal movement with respect to frame flanging. Transportation-handling device, which provides vertical ground movement is composite and made as continuous-type bucket bands mating each other in transfer points.

EFFECT: increased ability and speed of pit excavation, reduced costs of ground excavation and transportation outside the pit and provision of continuous technological cycle.

2 cl, 8 dwg

FIELD: mining, particularly machines for obtaining, or the removal of, materials in open-pit mines.

SUBSTANCE: cutting drum has cylindrical body with drive and is connected to mining machine by posts. The cutting drum is provided with disc rolling cutters arranged on line of rolling contact and with conveying augers extending from both ends thereof to drum center. Coils of each conveying auger face each other to divide the drum into two symmetric halves. Side drum surface defined by imaginary disc rolling cutter races includes cylindrical part and conical parts tapering towards outer cutting drum ends and adjoining the cylindrical part. Cylindrical part length is not less than 0.25 of cutting length Hc of material to be separated from rock. Working side surfaces of disc rolling cutters having wedge cross-sections and arranged on both cutting drum body halves in central cutting part thereof face opposite directions. Working side surfaces of disc rolling cutters having wedge cross-sections and arranged in both conical drum body parts face drum center. Both outer ends of cutting drum body are provided with disc rolling cutters made as free-cutting bits having wedge cross-sections facing outside.

EFFECT: possibility to perform continuous mining of rock characterized by increased rigidity.

8 cl, 5 dwg

FIELD: mining industry, particularly open-cast mining, particularly to produce natural stone blocks from sheet deposits by open-cast mining.

SUBSTANCE: method involves forming benches in each separate deposit so that production deposit is arranged at bench bottom; excavating mineral blocks by moving hydraulic excavator bucket teeth under productive deposit bottom and removing the blocks having natural configuration due to applying hydraulic action of excavator boom, handle and bucket to block with the use of natural deposit fracture porosity, which defines configuration and volume of produced blocks.

EFFECT: increased output, possibility to produce blocks from thin sheet deposits along with maintaining natural block volumes.

1 ex

FIELD: rock loading systems, particularly to load rock in dump-trucks with the use of mine excavator.

SUBSTANCE: system comprises hopper with outlet orifice and outlet orifice closing means. The system also has at least two modules arranged at mine face so that the modules may be moved and filled with rock by mine excavator. Each hopper has volume corresponding to load capacity of dump-trucks to be used. Outlet orifice closing means is made as pinned gate. Pedal is pivotally installed on frame slide at acute angle to slide base and may be rotated towards dump-truck driving direction. The pedal may rotate in vertical plane and is installed so that rear dump-truck wheels may be moved over the pedal. Pedal and free end of the gate are pivotally connected one to another through two control-rods and form articulated parallelogram. Hinge, which connects gate with control-rods, is fastened to counterweights by two flexible members and angle pulley so that counterweights may be displaced in vertical plane along frame posts. The hopper is provided with damping means brought into cooperation with the gate.

EFFECT: provision of continuous loading and undisturbed mine excavator operation.

3 dwg

FIELD: mining industry.

SUBSTANCE: method includes extracting quarry to planned depth by ore and rocks extraction by displacement of shelves along horizons with transferring to crushing plants, crushing rocks and then delivering them by lifting device to the surface, during extraction of quarry to planned depth at first stage during construction of board at the end of quarry in zone of decrease of power of deposit in stable rocks conveyer rope system is constructed, connected to hoisting machine, to bed with recesses, allowing to raise crushed material to large height at steep angle and with deepening of mining and displacement of crushers to lower horizons conveyer system is extended to provide for optimal transport shoulder for gathering vehicles.

EFFECT: higher efficiency, higher productiveness.

2 cl, 6 dwg, 1 ex

FIELD: open-cast mining.

SUBSTANCE: invention relates to continuous-operation self-propelled device designed for checking possibility of mining mineral materials and taking out interlayers whose properties, from point of view of their breaking and further transportation, are of vital importance at open cast mining. Proposed device has running gear, frame with drive unit and control panel and cutting drum arranged before running gear and equipped with cutting tools. Said drum is installed in supports of carrying frame for rotation around horizontal axis and is made for adjusting position in height by means of cylinder installed between frames and carrying frame. Crawler-type running gear is used. Cutting drum passes over entire width of device, and it is furnished with guide partitions and guard shield, is functionally connected with chute-like housing and is made for stepless change of speed of rotation, speed of feed and adjusting transverse tilting from one of two sides relative to working platform owing to vertical adjustment of position of one of hinge joints connection device frame and carrying frame which is made in form of forked rotary cantilever.

EFFECT: improved operating capabilities of device.

5 cl, 5 dwg

FIELD: earth-moving equipment, particularly machines for ground cutting, pit excavation for hydraulic structure, large-scale object building, as well as for mineral deposit development.

SUBSTANCE: ditching and transportation rig comprises basic chassis connected with earth-moving module and with transportation-handling devices, which move ground in vertical and horizontal directions. Earth-moving module is made as bucket rotary drum secured by means of vertical and horizontal hinges, as well as control-rods to the basic chassis so that the bucket rotary drum may rotate in vertical and horizontal planes and overhanging length thereof may be changed. Device is provided with continuous-type conveyer unit made as auger system and as telescopic pipe pivotally connected with transportation-handling device, which move ground in horizontal direction. Horizontal auger is located inside bucket rotary drum and is offset with respect to drum axis so that auger axis is parallel to drum axis. The horizontal auger is transversal to inclined auger having lower end installed under outlet end of horizontal auger. Upper end of inclined auger is pivotally fastened to upper telescopic pipe section. Transportation-handling device, which moves ground in horizontal direction, is made as endless band installed on length-adjustable telescopic sliding frame, which may change ground displacement distance by means of tightening rollers. Rollers have pins installed at different heights sliding in telescopic frame grooves. The telescopic frame has flanging. Lower telescopic pipe section is provided with rotary hinge connected to telescopic frame flanging so that rotary hinge may perform longitudinal movement with respect to frame flanging. Transportation-handling device, which provides vertical ground movement is composite and made as continuous-type bucket bands mating each other in transfer points.

EFFECT: increased ability and speed of pit excavation, reduced costs of ground excavation and transportation outside the pit and provision of continuous technological cycle.

2 cl, 8 dwg

FIELD: mining, particularly methods of surface mining.

SUBSTANCE: method involves transporting rock and unloading thereof under dump front slope; forming advance embankments; increasing advance embankment heights and pouring rock between the embankments. The advance embankments are formed of solid rock and are made as broken line with line sections extending at an acute angle to direction of dump front forming. Gaps between advance embankments are filled with soft rock so that soft rock front is behind from dump front and spaced from it for distance equal to not less than distance between solid and soft rock locations.

EFFECT: increased stability of each stacked refuse layer.

3 cl, 1 dwg

FIELD: mining, particularly to develop steep and inclined ore bodies.

SUBSTANCE: method involves separating stages and dividing open-pit field into penetration and production horizons; excavating ore and removing capping by bench movement; employing temporarily inactive wall parts; constructing descents and haulage benches, conveying semi-trenches; delivering ore and cut capping to day surface; dividing capping rock in transversal section in hanging and laying wall into inclined layers, wherein angle of temporary inactive wall slope parts of layers to be excavated is different in upper, central and lower zones and the angle is increased in dependence of different speed of horizontal and vertical bench movement in upper and lower horizons; forming temporary (intermediate) dumps, permanent and additional in deposit sides; conveying rock along the descents directed towards the second and the third excavation stage pit contour with the use of cyclic vehicle means and then with the use of continuously acting vehicles, wherein trenches with conveyers are directed so that conveyor lifting means may be extended or cascade system may be created if ore body thickness varies or ore body inclination angle changes. Conveyer lifting means are formed in ore production zone when cyclic acting means reach extreme transportation level, which puts the system out of optimal operation area. Conveyer lifting means path is selected to elongate the conveyer lifting means or to provide their operation along with vertical lifting means to deliver ore to transfer point on day surface. The last lifting means is constructed at high depth so that composite transport level does not project outwards optimal system operation area. At final pit development stage design wall angles are adjusted, the last layers are cut and the wall angle magnitudes are brought to extreme stability-varied final magnitudes.

EFFECT: increased efficiency of capping and ore extraction, reduced current stripping ratio, decreased stripping volume in sides during sloping thereof under steep angles and increased operational safety.

6 dwg, 1 ex

FIELD: mining industry, hydraulic building, road-building, agricultural building and so on, particularly to develop block rock or half-rock massifs.

SUBSTANCE: method involves stage-detailed rock zoning into block size, fracture porosity, strength and quality; dividing working zone massif into horizons having different heights or dividing working zone parts into productive blocks; dividing the productive blocks into uniform unit blocks, which are cut in top-down direction by "disassembling" method in accordance with block size so that blocks having the largest dimensions, namely technologically and technically oversized rock pieces in pit face are broken first and then properly sized and fine fractions are removed from rock massif with the use of corresponding working tool set of all-purpose mining rig. The all-purpose mining rig performs direct cutting of properly sized rock pieces from massif, drilling and blasting oversized rock pieces with the use of explosive charge having diameter of 8-84 mm under local shelter or by mechanical breaking or loosening operations. Then rock is removed and loaded on transportation means, moved to internal dump or to temporary bottomhole store.

EFFECT: increased efficiency of rock massif, pit face and coal strip mine cutting.

FIELD: mining, particularly methods of underground or surface mining.

SUBSTANCE: method involves excavating deposit up to design depth by opened method; cutting ore located under pit bottom in top-down direction by opencast-underground mining method, which is changed for underground-opencast mining method with opened excavated space and with ore movement via ore pass located in deposit center. During opencast-underground mining ore is developed within the limits of rock contour and then ore is cut along with forming platforms and faces having angles of inclination of not more than extreme ore shifting angles. During underground-opencast mining radial blind drifts are created in prepared sublevels and blind drifts are connected with working horizons by cross headings. Ore is cut from the blind drifts by blasting thereof so that inclined platforms for ore delivery to ore pass are created. Angles α of platform inclinations obey the following condition: φ≤α≤γ, where φ is angle of natural rock debris slope, γ is maximal angle of ore face shifting.

EFFECT: possibility to cut ore deposit located below design pit bottom mark up to lower level of explored reserves and increased working safety.

2 cl, 2 dwg

FIELD: ground excavation and pit and open-cast mine formation to erect hydraulic structures, large objects and deposit development.

SUBSTANCE: method involves marking open-cast mine contour; excavating ground in layers along with stepwise cutting of each layer; forming spiral transport ledge in open-cast mine slope and removing ground, wherein each layer at pit center is provided with depression; installing continuous-type ground excavation rig in front of depression; lowering working tool of ground excavation rig in depression; cutting ground of each layer in direction from depression to open-cast mine periphery along spiral line; forming constant transport spiral ledge in each layer in mine slope along open-cast mine perimeter; removing cut ground by length-adjustable vertical and horizontal conveyers, wherein horizontal conveyer lengths are decreased in each layer as depression diameter increases and vertical conveyer length is increased as open-cast mine depth increases. Spiral transport ledges of all layers form common continuous inclined spiral line.

EFFECT: increased simplicity and reduced time of open-cast mine development, reduced costs of ground excavation and disposal, provision of continuous work cycle.

5 dwg

FIELD: ground excavation and pit and open-cast mine formation to erect hydraulic structures, large objects and deposit development.

SUBSTANCE: method involves marking open-cast mine contour; excavating ground in layers along with stepwise cutting of each layer; forming spiral transport ledge in open-cast mine slope and removing ground, wherein each layer at layer perimeter is provided with trench; simultaneously forming permanent spiral transport ledge in outer trench slope; installing continuous-type ground excavation rig in trench; cutting ground of each layer along spiral line in direction from layer periphery to center thereof; removing cut ground by length-adjustable vertical and horizontal conveyers, wherein horizontal conveyer lengths are decreased in each layer as diameter of layer to be cut increases and vertical conveyer length is increased as open-cast mine depth increases. Spiral transport ledges of all layers form common continuous inclined spiral line.

EFFECT: increased simplicity and reduced time of open-cast mine development, reduced costs of ground excavation and disposal, provision of continuous work cycle.

5 dwg

FIELD: mining industry, particularly open-cast mining, particularly to produce natural stone blocks from sheet deposits by open-cast mining.

SUBSTANCE: method involves forming benches in each separate deposit so that production deposit is arranged at bench bottom; excavating mineral blocks by moving hydraulic excavator bucket teeth under productive deposit bottom and removing the blocks having natural configuration due to applying hydraulic action of excavator boom, handle and bucket to block with the use of natural deposit fracture porosity, which defines configuration and volume of produced blocks.

EFFECT: increased output, possibility to produce blocks from thin sheet deposits along with maintaining natural block volumes.

1 ex

FIELD: mining, particularly opened mining of horizontal and flat-lying seams.

SUBSTANCE: method involves cutting upper stripping ledge and rock interlayer ledges by shovel in mined-out space; mining mineral and conveying thereof. Covering stripping and rock interlayers are cut simultaneously with the use of single shovel located on lower rock interlayer roof. Upper stripping ledge is developed by upward digging operation, rock interlayers are developed by upward and downward digging operation performed during reverse shovel movement, wherein shovel moves along zigzag path and throws interlayer rock between ridges of banks.

EFFECT: increased efficiency of deposit development.

2 dwg

Dump forming method // 2272908

FIELD: mining industry, particularly to form single-layer dump or lower layer of multilayer dump along with successive and simultaneous creation of dump layers.

SUBSTANCE: method involves creating dump layer by unloading rock within predetermined land zone from vehicle performing a number of runs onto the layer in radial direction. The layer filling is carried out by longitudinal sections in direction away from pit and rock is freely laid in single direction within the limits of each above layer section. Above mentioned vehicle runs are began from pit exit end.

EFFECT: possibility to create dump over the full land zone near pit and at remote locations.

4 cl, 2 ex, 3 dwg

FIELD: mining art, in particular, open-pit mining of mineral resources by high benches.

SUBSTANCE: large-diameter single holes are replaced by a pair of divergent holes of a smaller diameter, in which one hole is always vertical, and the other one is inclined towards the bench; the single holes of the larger diameter are replaced with a pair of divergent bundles of parallel converged holes, in which one bundle is vertical, and the other is inclined towards the bench; the single holes of the larger diameter are replaced with a pair of divergent holes of a smaller diameter, in which one hole is vertical, and the other is inclined towards the bench and positioned in the vertical plane parallel with the first one and distant from it by 1-2 hole diameters; the single holes of the larger diameter are replaced by a pair of divergent bundles of parallel converging holes, in which one bundle is vertical, and the other is inclined towards the bench and positioned in the vertical plane parallel with the first one and distant from it by 1-2 hole diameters.

EFFECT: enhanced efficiency of blasting of the benches.

7 cl, 6 dwg

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