Drilling, blasting and mechanical method for speed arrangement of underground mines in strong rocks

FIELD: mining.

SUBSTANCE: method is performed using facilities of simultaneous drilling of boreholes with increased speeds of feed and rotation of bits and intensive washing of boreholes first in 2 vertical sectors, then, after rotation of a drilling faceplate by 90 degrees, in 2 horizontal sectors. After removal of the drilling faceplate from the bottomhole, the charging faceplate is fed with injectors-stems, and then boreholes are automatically charged with explosive substance, and explosion is initiated.

EFFECT: higher speed of mining, reduced time for bottomhole drilling, time of drilling and blasting works, increased frequency and resistance of a technological process.

3 dwg

 

The invention relates to mining, and in particular to methods for mining hard rock drilling and blasting and vzryvotehnicheskie ways, and can be used for speed underground mine workings, adits, tunnels in hard rock.

Known integrated method of drilling, including hydraulic crushing layer, which is produced simultaneously with its impulse mechanical destruction by adding the stream of liquid abrasive material of high strength (RF Patent No. 2341656, 20.12.2008, BI No. 35). The disadvantages of this method are the high energy costs on the destruction of the array, low intensity and limited scope of the harvester to conduct excavations in the rock, a fortress f less than 10 on a scale professional Dev.

Known drilling and blasting method of the workings for strong and medium strength rocks, including the drilling of holes over the entire area of the face (by passport), to a predetermined depth, consistent with the step of placing the support, loading and blasting the entire area of the face, airing, unloading blown mass, the frill of the roof, installation of temporary and permanent lining (Mechanization of mining excavation in hard rock / IVAN Medvedev and others - M.: Nedra, 1982).

The disadvantages of this method are the two who are - the sequence of operations, high intensity impact, low speed of excavations in hard rock.

There is a method of well drilling and mine workings, including serving on the bottom together with the washing liquid charges of liquid explosives in sealed with a cumulative funnel, serial blasting charges of liquid explosives (he) and the receiving grooves on the surface of the face; in this case the axis cumulative funnels oriented at an angle to the surface of the face equal to 45-90 degrees, and each subsequent recess on the surface of the face shape with overlapping section of the previous excavation on 5-20% (USSR Author's certificate No. 1757265, E21C 37/00, 1992).

The disadvantage of this method is the large number of CENTURIES when carrying out excavations and tunnels with large cross-section.

There is a method of conducting excavations in hard rock combine with the Executive authority, providing an automatic feed CENTURIES on the bottom. The Executive body includes a faceplate of the processor, on which the circumference are destroying the breed tools. The faceplate also has a through hole, through which automatically acting lever controlled with the remote, includes head syringes moving crosshead and connected by pipeline with the charging devices, the Ohm. During the rotation of the faceplate and feed it to the bottom hole is blasting rocks in the form of concentric grooves small width and depth. Upon contact of the lever with the bottom of further feeding stops, and the faceplate away from the bottom and transferred to a slow rotation. At this time the head of the needle moving along the guide holes are at the bottom. Charging the device squeezes the explosive in the grooves. Then through the nozzle face is initiated and produced by the explosion, the batter part of the breed (USSR Author's certificate No. 417623, BI No. 8, 1974) is a Prototype.

The disadvantage of this method is the high energy density of the destruction of the array, and the low speed of the workings.

The technical result of the invention is to increase the speed of carrying out production in strong rocks browserintegration way, reducing the time of the drilling face, time blasting (drilling and blasting), an increase in the frequency and sustainability of the process.

The technical result is achieved by the fact that in browserintegration the way speed underground excavations in hard rock, including the drilling of boreholes, rotary percussive method according to the area of the face (by passport) with submission to the working face of the drill head of the machine or the drilling rig during the drilling of each borehole and after the existing drainage from the face of the drill head with clearance holes, submission of supporting the shield on the bottom spacer-walking device with the supply of explosives in each hole, the release support shield from the face, to initiate the detonation of EXPLOSIVES in the group of holes in sequence across the face, airing slaughter, installation of temporary piles with shield advancing, loading of blasted rock, installation of permanent roof support, the moving hole and the base of the shield, while conducting excavations in hard rock browserintegration way to conduct simultaneous drilling by the rotary method of boreholes of small diameter and length, with higher feed speeds and rotation crowns and intense flushing holes, first in 2 vertical, symmetrical with respect to the axis of the production sectors, then, after turning the drill faceplate 90 degrees, in the remaining 2 horizontal sectors, with the subsequent removal from the face of the drill faceplate face shield, supply charger faceplate with syringes-rods on the bottom and the subsequent simultaneous automated charging holes explosive on the number of charge holes in 2 vertical sectors, and after turning the charger faceplate 90° - 2 horizontal sectors face with the initiation of blasting EXPLOSIVES in blast holes in the appropriate sequence remote wirelessly on a grounded channel is m protective armour sheet face shield.

Burrowsloanagency2 way speed of excavations in hard rock is performed in the following sequence.

The cycle of operations of the drilling begins (figure 1) after advancing shield 8 on the bottom to support the hydraulic Jack 9 on the face shield 5, which is located at the bottom and fixed spacer device 4, which includes three control Shoe and three cylinder installed through 120° along the contour of the face shield 5.

In the face of the shield 5 has two platters: drilling rig rotary table 2 with drill heads by the number of bore-holes drilled simultaneously in two vertical 17 or 18 horizontal sectors (figure 2 and figure 3), and charger faceplate 3 for charging blast holes with a syringe-rods, the number and position accurately corresponding to the position of the holes in the sectors. Face shield 5 is closed by the bottom shutter sheet 1 with holes, into which freely pass drill rod 16 with crowns or syringes-rods charger faceplate 3.

Faceplate 2 and 3 can be rotated 90 degrees at a fixed face shield 5 and armour sheet 1. Faceplate 2 and 3 when performing drilling operations or loading holes are displaced relative to each other by 90° and rotate them is carried out consistently.

The process of drilling is carried out in the following sequence (figure 1.): in vertical sectors 17 (2) BU the new faceplate 2 with drill mounted in a vertical plane along the axis of generation, includes hydraulic drill heads with the remote control 11 and simultaneously obrivaetsa face in two symmetrical with respect to the axis of the production sectors, including the Central hole of enlarged diameter, with simultaneous intensive flushing of boreholes. After drilling charger faceplate 2 is drained from the bottom.

Is the rotation table 2 and table 3 by 90°. Obrivaetsa face in two horizontal sectors 18 (3) set forth in the sequence with intense flushing holes.

High-speed drilling with intense flushing holes is achieved by the rotary way with increased speeds and includes a drill head with the drill rods and bits, reinforced by inserts of metal-based alloy "CBN" (BN3), and feed on the bottom on the length of drill holes provides drilling faceplate 2.

Simultaneous automated loading of blast holes first in 2 vertical 17, then in 2 horizontal 18 sectors is charging faceplate 3 with a set of chargers on the number and position of holes in 2 vertical (horizontal) areas of the face that can be rotated by 90° relative to the axis of the tunnel (the complex).

The operation of the loading process of the holes is carried out in the following sequence.

Charger faceplate 3 Budwig is placed on the bottom, syringes-rods pass freely into the holes in the armor sheet 1 and the maximum is fixed in the vertical holes 17 sectors slaughter. With the remote control 11 is activated plunger pump, which supplies plastic EXPLOSIVES in the holes and filled the space 16, and then through other channels served sealing stemming filling the remaining holes. Included with the remote control 11 system flushing and water cleanses the channels from the remnants of EXPLOSIVES and stemming.

Then the faceplate 2 and 3 turn 90° and carry out the loading holes CENTURIES horizontal sectors 18 set forth in the sequence.

Armour plate 1, table 2 and 3 (figure 1) are set to position "prepare for the explosion", with armour plate 1 closes faceplate face shield - upper sector, and the loading window (discharge area 19 (3)) remains open.

Initiating EXPLOSIVES in blast holes is remote wirelessly grounded on the radio. Blasting rocks and blasting EXPLOSIVES in blast holes in the appropriate sequence, are carried out on armour plate 1 drain it from the bottom under the action of the shock wave of the explosion.

In armour sheet 1 there are openings for the passage of the drilling tool or for automated loading of blast holes and it can be set by rotation about the axis of generation of a "drilling-charge" or position"drilling and blasting", when in this position the drilling-charging" is possible to perform the operation "drilling" or "charging"and in the "drilling and blasting" remains open with a face only a discharge area of blasted rock.

Removed raspor with face shield 2, the hydraulic cylinders 9 of the hydraulic system are included on the drain.

Included ventilation system: available air suction from the bottom zone and the intermediate chamber.

Is blowing in the sequence on the passport on drilling and blasting, armour plate 1 face shield 2, which under the action of shock waves away from the face to the support shield, centerwas on telescopic beam of Cabinet 6, and the force acting on the bearing shield from the shock wave, reduced damping device for a telescopic beam 6 and the hydraulic Jack 9 included on the drain.

The increase in the speed of excavations in hard rock is achieved by reducing the time of drilling slaughter (simultaneous drilling of a large number of holes using the rotational method at higher speeds and with crowns composite "CBN"), reducing the time for drilling and blasting operations at the loading holes, blasting them and airing before and after the explosion, the reduction of the cycle frequency and stability of the process.

Burrowsloanagency2 way speed underground production is to hard rock, including hole drilling, rotary percussive method according to the area of the face (by passport) with submission to the working face of the drill head of the machine or the drilling rig during the drilling of each borehole and subsequent removal from the face of the drill head with the cleaning of the bore-holes, submission of supporting the shield on the bottom spacer-walking device with the supply of explosives in each hole, the release support shield from the face, to initiate the detonation of EXPLOSIVES in the group of holes in sequence across the face, airing slaughter, installation of temporary piles with shield advancing, loading of blasted rock, installation of permanent lining, moving downhole and support shield, characterized in that the conducting excavations in hard rock browserintegration way to conduct simultaneous drilling by the rotary method of boreholes of small diameter and length, with higher feed speeds and rotation crowns and intense flushing holes, first in 2 vertical, symmetrical with respect to the axis of the production sectors, then, after turning the drill faceplate 90 degrees, in the remaining 2 horizontal sectors, with the subsequent removal from the face of the drill faceplate face shield, supply charger faceplate with syringes-rods on the bottom and the subsequent simultaneous automated charging holes explosive number for yaremych holes 2 vertical sectors and after turning the charger faceplate 90° in 2 horizontal sectors face with the initiation of blasting EXPLOSIVES in blast holes in the appropriate sequence remote wirelessly on a grounded radio on protective armour plate face shield.



 

Same patents:

FIELD: blasting operations.

SUBSTANCE: invention refers to mining industry, and namely to open-pit mining operations at development of ore and non-ore blocks of mineral deposits, the sections of which are sufficiently different as to mining-and-geological structure and quality of a valuable component, and namely to selective extraction of a mineral deposit by large-scale explosive destruction of mine rock masses of a complex structure. In rows of charges, which cross different-type mine rocks, well and group beam charges are located; group beam charges are located in sections requiring intense crushing. The latter are located in sections requiring intense crushing with direction of a convex beam surface towards intense crushing; row-by-row explosive breakage of single well and group beam charges is performed, thus performing row-by-row extension of nominal diameter of an explosion cavity.

EFFECT: preserving integrity of geometry of locations of large volumes of mine rocks within their initial geological location before and after large-scale explosions.

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FIELD: mining.

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1 tbl

FIELD: blasting operations.

SUBSTANCE: method involves drilling of bore pits in a working face or an entry way, their charging with explosives and delay-action blasting. Average distance between bore pits in the working face, the number of bore pits and specific consumption of explosives per working face is determined mathematically, depending on the mine working cross-sectional area, mass fracturing parameters, physical and technical properties of rocks, friction coefficient, value of rock pressure in mass, detonation characteristics and geometrical parameters of explosives.

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FIELD: blasting operations.

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1 tbl

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FIELD: blasting operations.

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FIELD: mining.

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EFFECT: accident prevention, possibility of correction of driving method in order to speed-up it and correction of structure of temporary support in order to improve its efficiency, improving safety of underground operations.

2 cl, 5 dwg

FIELD: mining.

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EFFECT: improved method to design the location diagram of boreholes with complex shape.

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FIELD: mining.

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EFFECT: increased safety of works when driving and fixation of openings in outburst-prone seams.

4 dwg

FIELD: mining.

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EFFECT: reducing construction cost, controlling big water flows, reducing hydraulic water pressure, providing reliable safe and dry driving of the main tunnel and non-overhaul operation in the future.

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FIELD: mining.

SUBSTANCE: during development of arrangement diagram of bore pits the location points of bottoms of bore pits are arranged on explosion plane on bottom-hole of set of bore pits. Programme product of design of arrangement diagram of bore pits determines absent parametres of bore pits considered from bottom-hole of set of bore pits to navigation plane. Programme product is capable of determining initial location point of bore pit and direction of bottom-hole. Programme product also makes explosion technical calculation of arranged bore pits.

EFFECT: method and programme product for development of arrangement diagram of bore pits is improved.

25 cl, 20 dwg

FIELD: mining industry.

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EFFECT: higher effectiveness.

2 cl, 4 dwg

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