Charging stem bag with spacer gate

FIELD: mining.

SUBSTANCE: in charging steam bag with spacer gate, which includes suspension part made from organic material, for example from plastic mass and polyfractional charging part with predominance of crushed stone with fraction size of 10-20 mm in the first portions, according to the invention, the suspension part is made in the form of a reservoir with thickened bottom, which has biconical shape.

EFFECT: simplifying the design of combined stem bag due to rejection of housing of the suspension part.

2 dwg

 

The invention relates to the field of drilling and blasting operations in strong rocks in quarries and can be used in a variety of industries, using blasting in hard rock masses.

Known suspension stemming representing a split cylinder with at least three longitudinal slots and a tapered extension cavity down from the bottom, the bottom of the cavity split hollow cylinder is inserted spacer cone, connected to a pull rope upper end fixed on a tripod /1/. This stemming blast holes allows you to lock the products of an explosion into the charging cavity to the destruction of the array and thereby to improve the energy efficiency of blast fragmentation of rocks.

A disadvantage of this device is the poor adhesion of the cylinder walls with the walls of wells of damaged structure (wood thrown out of the walls), forcing to put stemming depth, and performing stemming from a metal that is not acceptable when loading rock mass on the crusher-possible loss stemming in the rock mass and hit her as uncrushed body to the crusher. In addition, to secure the tamping in the well requires a special device, which complicates the manufacturing technology works.

The closest essentially solved problem with a device for locking of explosion products in agnoy cavity wells is combined stemming, including the suspension stemming having a body with an axial cavity in which the bottom rope operated retracts spacer cone, in which case axial cavity is made in the form of a hollow truncated cone of elastic material variable elasticity with the greatest elasticity in the lower part, for example made of rubber, spacer cone made of organic material such as wood or plastic masses, and on top of the suspension stemming place positraction charging part with a predominance of gravel fractions of 10-20 mm in the first portions /2/. They are part of the tamping when shifting up hanging part is sealed, forming a "plug"that prevents further displacement of the suspension stemming up and break gas blast through the wellhead. It provides long-term isolation of the charging cavity.

The disadvantage of this tamping, adopted for the prototype of the proposed device design is the complexity of cluster consisting of two elements.

The technical task to be solved by the invention is to simplify the design of the combined tamping due to the refusal of housing suspension part.

This object is achieved in that the charging stemming from the spacer shutter including suspension part, made of organic material, naprimer plastic mass, and positraction charging part with a predominance of gravel fractions of 10-20 mm in the first portions, according to the invention suspended part is made in a container with reinforced bottom with biconical shape.

1 schematically depicts an outboard portion of the tamping after the filing of rubble in the distance the shutter, figure 2 - sediment stemming from the spacer bolt in position in the well.

Sediment stemming from the spacer gate works as follows. In wells1lower action 2 on the conductor initiating impulse 3, such as a detonating cord or waveguide system SINV, and form the charge 4 of explosives. Then thrust bolt 5, made for example from plastic mass in a container with reinforced bottom, biconical shape, fixed handle 6 on the cord 7, is lowered into the borehole 1 to a predetermined depth and fill with gravel 8 fractions 10-20 mm hole 1 at the height of the stud bolt 5. Rubble fills the internal cavity spacer bolt 5, and the narrowing of 9 outside spacer bolt 5. Top 10 narrowing to 9 has the shape of an inverted cone and jammed cleat bolt in the borehole wall, passing them thrust force, and the lower part 11 narrowing to 9 prevents spilling rubble 8 below spacer bolt 5. After that, the cavity of the well 1 to the mouth of the fill chute casteu, for example, the drill cuttings. Sediment stemming from the spacer shutter is ready for use.

After detonation of the explosive charge in the charging cavity dramatically increases the pressure of detonation products to values of a few tens of thousands of atmospheres and dynamic kick gases of explosion alastname bottom spacer bolt 5, which leads to its displacement by a certain amount in the charging portion 12. This gravel 8 cone inside the lower part of the stud bolt 5 through its walls increases rasklinivanie spacer bolt 5 in the wall of the borehole 1. This position spacer gate 5 remains until the beginning of the destruction of the walls of the borehole 1 and break part of the products of detonation of the charge cavity to the atmosphere through cracks in the broken array. At this point, the clutch spacer bolt 5 with divergent walls of the borehole 1 is weakened and he begins to shift under the influence is still very high pressure of detonation products up through the borehole 1. They are part of the tamping 12 this hardens, forming a "plug"that prevents further displacement of the stud bolt 5 up and break gas blast through the wellhead. It provides long-term isolation of the charging cavity, which results in a better flow of secondary reactions in the detonation products and accordingly raises the energy of the explosion; that persons of the NGOs is important for modern coarse CENTURIES types of granulite and ramonito, have a significant share of the energy released in the process of secondary reactions.

Thus, the claimed sediment stemming from the spacer shutter simplified design allows you to securely lock the products of an explosion into the charging cavity to the destruction of the array and thereby to provide the solution of a technical problem.

Sources of information taken into account when drawing up the proposal

1. The patent of Russian Federation №2286534, IPCF42D 1/08, 2006.

2. The patent of Russian Federation №2371670, IPC F42D 1/08, 2009 (prototype).

Sediment stemming from the spacer shutter including suspension part, made of organic material, for example plastics, and positraction charging part with a predominance of gravel fractions of 10-20 mm in the first portions, wherein the hanging portion is made in a container with reinforced bottom with biconical shape.



 

Same patents:

FIELD: mining.

SUBSTANCE: combined organic plug comprises a spacer part in the form of a cylinder, in the cavity of which a spacer cone is inserted, connected to a cable traction. At the same time the cylinder is made in the form of a jacket from a soft material, for instance, from a dense cloth, the upper part of the jacket is equipped with a split ring from elastic material along well diameter, and the lower one - with a cord, the spacer cone is made of organic material, for instance, from plastic mass or wood, with a bore in the central part, and a filling part, for instance, from bore mud, is placed into the jacket and on top of the spacer part.

EFFECT: increased reliability of detonation productions enclosure in a charging cavity to the moment of complete destruction of adjacent rocks with a combined plug.

2 cl, 3 dwg

FIELD: mining.

SUBSTANCE: well charge spread method involves suspension at the specified depth of the borehole gate made in the form of cone with biconical groove in the middle part, and its wedging up by filling of several portions of crushed stone to biconical groove. At that, borehole gate can be made from rubber, wood or plastic mass.

EFFECT: simpler formation of air gap in the explosive charge and higher reliability of the charge spread.

2 dwg

FIELD: explosives.

SUBSTANCE: method of charge dispersal in the well involves suspension of bore-hole gate at the specified depth and its locking. At that, as the bore-hole gate there suspended is hollow reservoir of biconical shape, which is made from plastic mass, and it is locked by filling to the well of several portions of crushed stone with particle size of 10-20 mm.

EFFECT: easier formation of air gap in the explosive charge and higher reliability of charge dispersal by using the mechanical bore-hole gate.

2 dwg

FIELD: mining.

SUBSTANCE: during implementation of the method a stem the cross dimension of which is smaller than well diameter is lowered into well by means of stem lowering mechanisms attached to the stem. First, expansion is made in well at distance of 1-2.5 m from day surface; then, stem with stem lowering mechanisms fixed on one of its sides is lowered into well and its edges are located perpendicular to well wall till it reaches the expansion into which the stem ends are led.

EFFECT: increasing blast efficiency, reliability if stem installation, and reducing the cost of blasting operations.

4 dwg

FIELD: mining.

SUBSTANCE: combined charge shaping method involves formation of charge in water-flooded part of the well from water-resistant explosive, arrangement on mirror of water displaced upwards in the well of the mixture consisting of the material having floating properties, capable of withstanding the weight of charge from non-water-resistant explosive, on which non-water-resistant explosive is lowered. At that, material having floating properties and binding agent are pre-mixed; the obtained mixture is poured on surface of water displaced upwards with water-resistant explosive; after mixture is moistened due to contact with water, it is left in the well for the period required for mixture to cure on water surface, and after the obtained mixture is cured, non-water-resistant explosive is arranged on it.

EFFECT: enlarging the capabilities of the material having floating properties, and reducing the manufacturing cost of blasting operations.

1 dwg

Suspended well stem // 2419063

FIELD: mining.

SUBSTANCE: suspended well stem is arranged in the form of a solid cylinder, diametre of which is approximated and comparable to the well diametre to the maximum. The cylinder is installed at the depth of the massif with intensive cracking. Between a charge and a stem there is an air gap. The upper and lower ends of the cylinder are arranged as truncated in parallel to each other, besides the length L of the large axis of the formed ellipse equals 1.15-1.25 of the well diametre, besides, the upper end is fixed to the crosspiece arranged above the well head with a rope fixed near the lower edge of the truncated part of the stem.

EFFECT: invention makes it possible to use the energy of explosion products to the maximum, to intensify the process of rocks grinding, to reduce the specific weight of explosives, to increase quality of rock mass grinding, to increase reliability of the well stem, to simplify its manufacturing.

3 dwg

FIELD: explosives.

SUBSTANCE: method provides for delivery of emulsion explosive by means of pump to charging hose and during transportation via the latter of components of emulsion explosive components the supply to annular gap between the hose wall and the flow of water composition with surface-active substance. Alkyl benzene sulphonate (NP-1 sulphanole) or alkyl sulphate of secondary alcohol (penta-surface active substances) in quantity of 0.05-0.1% is used as surface active substance.

EFFECT: introduction of surface active substances allows reducing inter-phase surface tension between emulsion explosives and wall of charging hose, which considerably reduces the pressure during the charging process and excludes the break of the charging hose.

2 cl, 1 tbl

FIELD: blasting.

SUBSTANCE: invention relates to the field of blast-hole drilling and may be used in various industries, using blasting in rocks with application of emulsion explosive substances (EES). In method to charge deep dry wells with emulsion explosive substance sensibilised by method of gas generation, including preparation of emulsion ES in mixing-charging machine, addition of gas generating additive into emulsion matrix and charging well with emulsion ES, according to invention, well charging is carried out in stages: at first lower charge of emulsion ES is formed with height sufficient to provide for charge tightness in bottom part, corresponding to critical diameter of emulsion ES charge detonation for this diameter of well with installation of primer in it, then charge separator is placed to lower charge of emulsion ES to transfer pressure of mass arranged above part of charge of emulsion ES at walls of well, for instance, in the form of column of cellular polystyrene with height of 4…6 diameters of well, and well charging is continued, when required, repeating procedure of charge separation into parts and arrangement of a separate primer in each part.

EFFECT: easier formation of emulsion ES charge of increased length by application of regular permanent parameters of emulsion by separation of emulsion ES charge into parts along height.

3 dwg

FIELD: blasting.

SUBSTANCE: widely spread method for explosion on earth surface is method of blasthole charges. Method for charging of horizontal blasthole consists in alternate feed of packaged explosive charges into blasthole and their pushing with punch. If blastholes are charged with gel-like explosives in polyethylene shells, there are fed into blasthole bottom by dragging. Device for realisation of proposed method consists of stem, on one end of which there is a handle provided, and on the other end - fork for engagement of loop fixed on charge. In process of charging, cartridge, with the help of loop in its front part, is engaged by fork and dragged into blasthole bottom until stop. Each subsequent charge is fed into blasthole in the same manner.

EFFECT: invention makes it possible to quickly charge horizontal blastholes with lengthy charges of gel-like explosive with high density, since cavities are not available, density of blasthole charging increases, and completeness of explosives detonation is provided, proposed device is simple and cheap to produce.

2 cl, 1 dwg

FIELD: explosives.

SUBSTANCE: method for destruction of solid rocks or concrete, includes installation and driving of devices filled with mixture of substances in blast holes, initiation of combustion reactions in devices in non-detonation mode, accompanied by development of appropriate pressure in blast holes. Non-detonation mode of combustion is provided by application of mineral oxidiser in the form of pellets with size of 0.1-5.0 mm, which fills up to 95% of sealed device volume, besides prior to installation of device into blast hole, device cover is opened, liquid hydrocarbon fuel is poured into it in stoichiometric amount, cover is closed, and device is shaken. In version of method, dry sealed blast holes are filled with mixture of mineral oxidiser in the form of pellets with size of 0.1-5.0 mm with liquid hydrocarbon fuel. Initiation of combustion reactions is done by means of initiation facility arranged in the form of thin exploding wire, connected to source of high-voltage electric pulse.

EFFECT: method makes it possible to considerably simplify operations at site of works performance, to increase reliability of method actuation, its safety, to reduce cost of works and therefore increase landmine effect from method application.

5 cl

FIELD: earth or rock drilling, particularly means adapted to reduce mutual impact influence of explosives during well development and operation.

SUBSTANCE: method involves arranging one or more shock-absorbing members near one or more explosive doses, which prevent propagation of shock caused by detonation of the explosive doses. Shock-absorbing members include porous material, for instance gas-filled liquid or porous solid material, having 2%-9% porosity. Shock-proof screen may be arranged between detonating cord and explosive doses. Hollow charges may be placed in capsule.

EFFECT: increased reliability and capacity.

57 cl, 30 dwg

Method of blasting // 2260770

FIELD: blasting.

SUBSTANCE: method comprises making well charge of individual members of the blasting agents that receive one or several strikers. The members are separated with spaces filled with a liquid with a density of 800-1400 kg/m3. The strikers are actuated so that the detonation of blasting agent is completed simultaneously in the bulk. The height of the active section of the charge of blasting agent interposed between the boundaries of the liquid and location of the striker are calculated from the formula proposed.

EFFECT: enhanced efficiency.

7 cl, 3 dwg

FIELD: mining art; performing drilling and blasting operations at stripping and open cuts.

SUBSTANCE: proposed indicator has cover fastened to base, reel and spacer mechanism. Novelty of invention consists in availability of spacer screw with movable nut and twin spacer levers provided with spacer plates and tenons articulated on them.

EFFECT: enhanced efficiency due to possibility of using at boreholes of different diameters; simplified construction.

1 dwg

Thrust stemming // 2284011

FIELD: drilling and blasting operations in hard rocks at open pit mining, applicable in various branches using spare blasting operations and blasts under a shelter in hard rock masses.

SUBSTANCE: the thrust stemming is made in the form of a metal cylinder having a tapered expansion with several rows of shoulders from the outside in the lower part and at least three longitudinal slots inserted in which is a metal thrust cone with an inner cavity, provided with a tubular tie-rod with a thread on the upper end, freely passing through the axial channel of the bearing ring positioned above the cylinder.

EFFECT: enhanced efficiency of blasting crushing of rocks due to locking of the detonation products in the charge cavity of the thrust stemming up to the moment of complete destruction of the environment.

2 dwg

FIELD: mining art, applicable for charging of deep holes at blasting in mining art and in construction.

SUBSTANCE: the method consists in production of air gaps with the aid of deep-hole gates whose diameter exceeds the deep-hole diameter, lowering of them into the deep hole to a preset depth, installation of live primers in each deep hole, installation of the detonating cord. Air gaps are produced with the aid of an elastic deep-hole gate, which in the deformed state is placed in a transportation container and on a rod rigidly linked with the transportation container. They are lowered into the deep hole that is adjusted with the aid of the rod, where the elastic deep-hole gate is pushed out of the transportation container. The transportation container is taken out of the deep hole, and the live primer and a portion of the charge is placed on the elastic deep-hole gate. Then, the same elastic deep-hole gate in a deformed state is placed into the next transportation container, lowered into the deep hole to a preset depth and all operations are repeated in the same sequence up to the feasibility studied quantity of elastic gates in the deep hole.

EFFECT: reduced labor content of deep-hole charging by distributed charges, reduced specific cost of the gate of the ultimate cost of the installed charge, reduced cost of deep-hole charging by distributed charges, simplified process of charge distribution in a deep-hole.

4 dwg, 1 ex

FIELD: mining art, applicable for charging of deep holes at blasting in mining art and in construction.

SUBSTANCE: the method consists in production of air gaps with the aid of an elastic deep-hole gate made of a rubber-containing material, which in a deformed state and bound by an additional rope is lowered on the main rope into the deep hole to a preset depth that is adjusted with the aid of the marks made on the main rope, then the elastic well gate is freed of the ropes with the aid of one of the ends of the main rope bound to the additional rope. After that the ropes are taken out of the deep hole, and a thickener is placed on the elastic well gate, the live primer and a portion of the charge are placed on the thickener. Then, the next elastic deep-hole gate is bound to the same main rope in the deformed state, lowered into the deep-hole to a preset depth and all operations are repeated in the same sequence up to the feasibility studied quantity of elastic gates in the deep hole.

EFFECT: reduced labor content and cost of deep-hole charging by distributed charges, reduced specific cost of the gate of the ultimate cost of the installed charge, simplified process of charge distribution in a deep hole and salvaging of the used rubber-containing materials.

3 dwg

FIELD: drilling and blasting operations in hard rocks, applicable in various branches using blasting operations in hard rock masses.

SUBSTANCE: the suspended tamping bar of blast holes represents a split cylinder with at least three longitudinal slots and a tapered expansion of the cavity down from the bottom with a collet grip fastened through the center of its outer surface. A hollow spacer cone is inserted from the bottom into the split cylinder, the cone is connected to a rope haulage which passes through the collet grip, and with the upper end through a shackle with holes it is fastened an a lever installed on a bedplate. The rope haulage passes through the spacer tube fastened on the bedplate from the bottom.

EFFECT: provided locking of blast products in the charge cavity before destruction of the mass, enhanced efficiency of use of the blast energy for crushing of the rock.

2 dwg

Spacer tamping bar // 2285899

FIELD: drilling and blasting operations in hard rocks, applicable in various branches using blasting, operations in hard rock masses.

SUBSTANCE: the spacer tamping bar represents a split cylinder with at least three longitudinal slots and a tapered expansion of the cavity down from the bottom, which is connected to the supporting ring through a spacer tube. A hollow spacer plug is inserted in the split cylinder from the bottom, it consists of tapered and cylindrical parts with at least three longitudinal slots, provided with a tubular haulage with a thread on the upper end, freely passing through the holes in the cylinder and supporting ring.

EFFECT: provided locking of blast products in the charge cavity before destruction of products in the charge cavity before destruction of the mass, enhanced efficiency of use of the blast energy for crushing of the rock.

2 dwg

Spacer tamping bar // 2285900

FIELD: drilling and blasting operation in hard rocks, applicable in various branches using blasting operations in hard rock masses.

SUBSTANCE: the spacer tamping bar represents a cylinder with a tapered expansion composed at least of three parts that can move in the horizontal direction on fingers fastened above and inserted in the guide bushes on the bottom. The split cylinder is connected in the upper part to a supporting ring through a spacer tube, and a hollow spacer cone is inserted in the inner cavity of the split cylinder, the cone is provided with a tubular haulage with a thread of the upper end, freely passing through the holes in the cylinder bottom and supporting ring.

EFFECT: provided locking of blast products in the charge cavity before destruction of the mass, enhanced efficiency of use of the blast energy for crushing of the rock.

2 dwg

FIELD: mining art, in particular, construction of mixing-charging machines used for mechanized preparation and charging of holes at open mining operations.

SUBSTANCE: the machine has a transportation base carrying a vessel for emulsion with a charging door closed with a cover, vessels for the gas-generating agent, water and petroleum product, ammonium nitrate bin. The transportation line, proportioning pumps for supply of emulsion, gas-generating agent, water and petroleum product, static mixer of emulsion and gas-generating agent, as well as the ammonium nitrate feeder are also positioned there. The vessel for emulsion is made minimum with one additional fire-fighting hatch that is positioned in the lower part of the vessel for emulsion and has a cover installed on the body of the mentioned vessel for automatic opening of the hatch due to self-destruction of the components of its cover and/or of its locking device at heating of the vessel body for emulsion in case of fire. The cover of the charging door is made in the form of a ring installed for pressing to the door ring edge, and membrane closing the central axial hole of the ring. The membrane is made for destruction under the effect of the maximum allowable pressure of vapors inside the, bin emulsion in case of emergency.

EFFECT: enhanced operating safety of the machine due to its equipment with devices for prevention of origination of a blast at a rise of pressure or temperature in its vessel for emulsion.

4 dwg

Up!