Method for development of steeply dipping deposits of solid minerals
SUBSTANCE: invention relates to the mining industry and can be used in the development of steeply dipping deposits of solid minerals, in particular rock and half-rock types. Method includes positioning the automated deep mining complex in relation to the face, bringing it into the working initial state by means of a mechanism for rotating the cantilever telescopic boom in the vertical plane with the main, intermediate and head sections taking into account the direction of the ore body. To intensify the process of cutting and activating pneumatic conveying, a pick-up and loading machine is equipped with a vibration unit, the vibration frequency of which is regulated depending on the physical and mechanical characteristics of the rocks and the cutting parameters of the bailer-loading organ. Drive of the pick-up and loading machine and the vibration unit are placed on the head section, and the telescopically flap nozzle is placed in the head section.
EFFECT: technical result consists in increasing the productivity, reliability and increasing the technological efficiency of the rock failure of various degrees of strength in confined spaces by adjusting the cutting force in the development zone and by forming fracture zones in the surface layer of the treated ground, taking into account the strength characteristics of the rock, reducing the volume of overburden mining, reducing environmental impact in the area of mining.
1 cl, 4 dwg
FIELD: mining operations.
SUBSTANCE: invention relates to the mining industry and can be used in stripping and mining operations at the fields, composed of dense and semi-hard rocks, with use of boom surface miners, spreaders and other mining machines. The method comprises continuous extraction and direct overburden waste disposal, continuous extraction, transportation, sorting of mineral resources. The front of mining operations is located along the short axis of the career field, the continuous working of overburden bench of high altitude is performed simultaneously on two sub-benches using boom surface miners. The overburden on the conveyors of the boom surface miners is fed through the receiving devices to the conveyors of the loading consoles of the spreader. The process of combining the conveyors of the boom surface miners with the receiving devices of the loading consoles and positioning of the spreader relative the boom surface miners is provided by the automatic control system. The mining operations are carried out with the use of excavating milling machine, the mineral resources are fed by the loader to the hopper of the mobile reloading unit with a conveyor and then to the mobile-sorting unit.
EFFECT: increase of the productivity of mining operations in the development of deep deposits of mineral resources composed of dense and semi-hard rocks.
SUBSTANCE: method of development of solid mineral fields using the excavating milling machine and scrapers comprises the use of the excavating milling machine for rock loosening with placement of milled rock mass into the dug-out trench from which it is taken by the scraper which follows the excavating milling machine continuously without stopping. The scraper scoops the rock mass to the ladle by means of the loading tray which fills the front part of the ladle with rock mass and then moves using a rake wall, and the released front part of the ladle is filled with rock mass again. Hydraulic cylinders of the tray control mechanism lift the loading tray with rock mass for final filling of the ladle front part. The ladle is unloaded through the formed slot between the ladle bottom and the loading tray lifted in guides by means of the back wall which moves to the front part of the ladle with the rake wall.
EFFECT: method improves the operational reliability and productivity when performing stripping and mining works on the fields formed by dense and hard rocks using excavating milling machines and scrapers.
2 cl, 9 dwg
SUBSTANCE: this process comprises open coal extraction by cut chambers, production of barrier posts and backfilling of said chambers. Drilling hardware represents a milling driller located on day surface with drilling tool inclination of 45-90 degrees from vertical line. Note here that coal removal from blocks is performed with the help of hydraulic drawing device at liquid-to-solid ratio equal to 1:3. There, coal pulp is directed to coal dewatering to 7-8 % while effluents are forced to desliming and circulation.
EFFECT: higher efficiency and safety of edge seams development.
6 cl, 3 dwg
SUBSTANCE: method comprises the cleaning of coal bed or beds by striking by open mining operations and installation on a bed of a drilling unit, for coal drilling-out at an angle from 60° to 90°, with reference to the bed strike axis, and to the depth 100 meters and deeper. To increase a productivity of coal extraction, and also to decrease of load on the cutting working body in case of emergencies, a bucket auger is formed by two parts, namely the cutting working body and a lift cylindrical ladle connected to each other by the coupling device. Inside the bucket auger an auger-drill element for loading of minerals into the lifting cylindrical ladle is installed.
EFFECT: improvement of efficiency of development of steeply pitching coal beds and environmental safety of mining operations.
7 cl, 3 dwg
FIELD: oil and gas industry.
SUBSTANCE: invention relates to open development of mineral fields, more exactly to open development of the long steep dipping fields with internal dumping. Method when borrow pit length is divided to turns, from them first turn is developed to design depth with external dumping, and second turn is developed using internal dumping, locating overburden to the developed space of the first turn with common formation of the dumping tiers with progress of mining towards end through full depth. At that the work zone through height is divided to two parts, bottom part opening and development are performed by longitudinal inclined layers with lifting 20-25% towards end using the wheel loaders and vehicles able to move over these steep grades, height of the bottom part is determined as per mathematical equation. The top part of the work zone is developed using the transverse development system and sliding access tracks, their width is accepted based on the condition of their use for dumping of the exploded rocks upon their widening and simultaneous assurance of two-way passage of vehicles ensuring the cargo movement between the bottom and top shelves, the longitudinal inclined layers of the bottom part of the work zone are developed by separate formed in series from top to bottom near-vertical-horizontal layers with maximum height, determined considering trajectory of the loader bucket movement, during development of each successive near-vertical-horizontal layer the rocks are preliminary loosened, the loader excavates it and loaded in vehicles located at horizontal sites at minimum distance to the mine working.
EFFECT: technical result is decreased additional sides spacing to arrange the opening mine working, and reduced distance of overburden transportation from the work zone of the borrow pit to the internal dumping.
FIELD: mining operations.
SUBSTANCE: method comprises the construction of three artificial elements: impervious screen, a protective berm, a protective coating. And the impervious screen is created by drilling of inclined wells of large diameter in the winter period from the upper site of the ledge nonworking edge side most affected to thawing, parallel to the slope surface at its full height followed by filling them with ice rock stones, chilled fresh water and freezing with natural cold, and the protective berm is erected over the mouth parts of the wells, starting from the upper edge of the ledge of the tapered section of calculated height, using layered freezing of overburden rocks, which in the summer period, including the surface of the ledge slope, to prevent thawing, covered with the protective coating, which is made in the form of removable flexible moisture-heat- and light-reflecting mat, removed with the onset of winter, the thickness of which is determined based on the mathematics.
EFFECT: prevention of thawing of frozen rocks of non-working ledge edges of pits.
SUBSTANCE: method comprises preliminary loosening of a block of rocks and half-rocks by simultaneous massive drilling holes in it with the maximum density across the whole area of the block prepared for extraction, using a multibar drilling unit, followed by the extraction of rock by machine ways destroying the rock solid blocks between the holes.
EFFECT: complete elimination of harmful effects on the environment and the operational staff at drilling and blasting loosening rocks.
SUBSTANCE: invention relates to the method of open mining of mineral deposits with creation of a dump. The method includes separation of career space by zones, height and pit perimeter, cutting of ledges and horizons on which overburden and mining works with removal of rocks by truck or by rail into dumps and via ore chutes to reloading points are conducted, and dumps are built up using the cyclic action facilities. Meanwhile a convex form of a working edge is formed, gradually being fitted into the edge differentiated by steepness on a final contour which is built up in view of minimum disturbance of walls of slopes and a edge according to the technology with minimum consumption of explosives (E) with removal and dumping of rock into a main dump located near a zone of overburden works outside a contour of a steep edge of a pit of the 1st phase; initially temporary dumps are used with self-transportation of rocks outside a pit, and with their partial re excavation, provide the minimum shoulder of tramming of rocks and ore using the crushing reloading points and conveyors from inclined planes on the top horizons to the steep and vertical at completion of a pit. And with deepening of mining operations the overburden zone is divided into two sites and rock is moved by combined transport from two sides into a dump under construction parallel to a edge slope in view of deformation of its separate sites, and rock dumping on a dump after crushing is carried out by line transport facilities using the mobile console, the minimum shoulder of tramming of rock and ore and costs of development of mountain weight on the first and the subsequent stages (turns) are ensured, and the first two layers of a dump are dumped according to cyclic and line TsPT technologies using motor transport or loaders (at re-excavation of rocks) that provides stability and robustness of the dump front according the developed technology of dumping, at the final stage the third layer is dumped, and the fourth layer of dump if necessary, according to its calculated volume and height and limit depth of a pit.
EFFECT: improvement of efficiency of field development during construction of a dump with large volume and height at decrease of costs of stripping and improvement of safety of dumping.
SUBSTANCE: after performance of drilling and blasting operations in an overburden bench during layer-by-layer excavation of the blasted rock to an extended bench and a final blade circuit on the formation roof of the mineral deposit within excavation heading throughout the length of the slab there left is a layer of the rock with negative temperature. This allows developing a zone of stable freezing, warming it up and strengthening it by action of solar insolation during development of the upper part of the breakdown. The rest rock layer is excavated to a final blade circuit after disposal of the upper part of breakdown throughout the length of the excavation slab.
EFFECT: reduction of influence of repeated freezing on productivity of a drag line and provision of its stable operation during excavation of blasted rocks of an overburden slab.
3 tbl, 2 dwg
SUBSTANCE: method involves positioning of an automated complex for deep development relative to the working face considering the direction of ore bodies settings. Control of mine rock parameters is performed by means of control sensors of physical and mechanical characteristics of mine rocks for adjustment of a mine rock cutting force considering rotation speed of a working element and movement speed of the working element in a vertical plane throughout the cutting depth and cutting direction by means of hydromechanisms of telescopic retraction and a turning mechanism of the head section. Width of capture of the ore body plane in a horizontal direction is provided by means of the positioning mechanism of the complex relative to guides; with that, information on circuits of destructed mine rock is sent from control sensors of mine rock circuits to a system control unit.
EFFECT: increasing productivity, improving reliability and enlarging technological efficiency of destruction of rocks of different strength and coherence degree by controlling a cutting force in a zone of processing and formation in a surface layer of the processed massif of destruction zones considering strength characteristics of rock.
2 cl, 3 dwg
FIELD: machine building.
SUBSTANCE: detachable equipment for fabrication of marble columns contains a pumping and regulating unit connected with hydraulic units by a pipeline, a flat frame with fastening to the carrier mechanism, a group of rotary circles with disks for fastening to the group of column drilling strings containing inside the group of column drilling strings with various diameters.
EFFECT: acceleration of industrial development of marbled limestone deposits.
SUBSTANCE: invention relates to mining, namely to sections of powered supports. The invention proposes a roof support of the main entry, which has two spaced sides, each of which includes a rear base interacting with soil, a hydraulically controlled rear support column connected to the above rear base, a rear shield, a rear connection that attaches the above rear shield in a hinged way to the above said rear base interacting with soil, a middle base interacting with soil and connected to the above said rear base, a hydraulically controlled middle support column connected to the above said middle base, the front base interacting with soil and connected to the above said middle base, and a hydraulically controlled front support column connected to the above said front base. Besides, the roof support includes a rear beam interacting with the roof and hinged to the rear shield, a middle beam interacting with the roof and hinged to the above said rear beam, and the front beam interacting with the roof and hinged to the middle beam interacting with the roof. With that, the above said rear support columns are connected between the above said rear bases and the specified rear beam; the above said middle support columns are connected between the above said middle bases and the above said middle beam, and the above said front support columns are connected between the above said front bases and the above said front beam. A rear connection strip is hinged to each of the above said rear bases interacting with soil; a middle connection strip is hinged to each of the above said middle bases interacting with soil, and the front connection strip is hinged to each of the above said front bases interacting with soil.
EFFECT: improvement of operation of a powered support, namely improvement of stability and provision of constant contact to roof of mining under conditions of variation of mining area relief.
9 cl, 17 dwg
SUBSTANCE: complex comprises a receiving wedge part with a loading module, a hopper for exploding and loading, an unloading scraper part, a self-movement mechanism, a pump station, a control panel, a hydraulic manipulator with a drilling machine on a portal trolley moving along a loader column, a safety support moving along guides at hopper boards with the help of sliding carriages. At the same time the inner part of guides at boards of the hopper for exploding and loading is arranged in the form of a geared rack, and wheels of sliding carriages of the safety support - in the form of geared wheels moving along the rack, besides, movement to geared wheels is transferred from electric drives installed inside sliding carriages, and their supply is provided by electric cables wound onto drums installed in a tail part of the hopper for exploding and loading and having a mechanism of automatic winding making it possible to pull a cable from a drum as sliding carriages move along the hopper to the bottomhole, and to wind the cable back onto the drum as sliding carriages move away from the bottomhole.
EFFECT: improved design of a tunnelling exploding-loading complex, reduced labour intensiveness and higher efficiency of tunnelling works.
SUBSTANCE: invention relates to mining. A complex comprises a receiving wedge part with a loading module, a hopper for exploding and loading, an unloading scraper part, a self-movement mechanism, a pump station, a control panel, a hydraulic manipulator with a drilling machine on a portal trolley moving along a loader column, a safety support made of safety shields and stands, moving along guides at hopper boards with the help of sliding carriages. At the same time safety shields have two sections, the front section is hingedly attached to the rear section, and is made as capable of turning down by means of two hydraulic cylinders, arranged under safety shields, at the same time the front section is lowered before blasting and lifted afterwards from a panel of complex control.
EFFECT: improved design of a tunnelling exploding-loading complex.
SUBSTANCE: cutter-loader includes housing with skis and electric motor with hydraulic pump, which is arranged in it, cutter-loader supply mechanism along the working face, carriage with possibility of longitudinal movement relative to the cutter-loader housing owing to telescopic hydraulic cylinder, retaining device of the carriage and shaft with brake device and shaft rotation hydraulic cylinder. Double-arm revolving gear with screw and its drive is fixed on the shaft end. Mechanism allowing to perform rotational movements relative to longitudinal axis of that part of the arm where the screw with drive is located is built into the arm of the revolving gear, on which screw with drive is located.
EFFECT: enlarging functional capabilities of cutter-loader and improving its use efficiency.
FIELD: coal industry, particularly development machines for hydromines.
SUBSTANCE: method involves performing preparation drilling operations along with well flushing in mine ground with the use of several hollow rods provided with cutting crowns; anchoring tunneling machines by fastening thereof to well walls with the use of spring-piston mechanisms provided with anchoring means and connected to hollow rods so that tunneling machine fastening is carried out without rod removal from wells; cutting new ledge after hollow rod removal from well; fixing anchoring member during ledge cutting after hollow rod removal by applying tension to hollow rod in the absence of water pressure in it. Anchoring member is detached from well wall by moving rod to face simultaneously with supplying pressurized water to the rod before hollow rod removal. Spring-piston mechanism acts on anchoring member in direction transversal to well wall. Then the rod is removed from well and the tunneling machine is moved for distance equal to ledge width and tunneling machine fixation operations are repeated.
EFFECT: increased reliability of temporary tunneling machine anchoring during excavation operation performing.