Method for distribution of charge in a deep hole

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

 

The invention relates to mining and can be used for loading wells by blasting in mining. The invention can also be used in the production of explosions in the building.

Under the existing drilling and handling equipment one of the most effective methods of intensification of rock crushing, reduction of specific consumption of EXPLOSIVES, reducing the complexity of the loading wells (e.g., deep wells) is the application of distributed on the well depth charges with air gaps.

There is a method of dispersing the charge in the well (Melnikov NV Quick reference open mining works. - M.: Nedra, 1982, S), in which air gaps are created with the help of well closures with wooden disks with a diameter equal to borehole diameter, connected by a wooden rods or other devices, this set militants in each charge, mount detonating cord.

The disadvantages of this method are its large volume and low quality of training of blasted rock.

Also known how the distribution of charges in the well, including the creation of air gaps using pneumatic downhole valves, the diameter of which exceeds the diameter of the hole, install the ku fighters in each charge, the mounting of the detonating cord (RF Patent No. 2235971, F 42 D 1/02, 1/08, publ. 10.09.2004,, bull. No. 25).

The disadvantages of this method are:

the high cost of borehole shutter, and his productions into the well in the total value of the charge well;

- the need to use expensive high-tech logistics staging valves in the well (mobile power station, mobile compressor and the like)that requires appropriate training of employees and complicates the technological process;

- greater complexity of loading wells;

- high costs of loading wells distributed charges.

Objectives of the invention are: reducing the complexity of the loading wells distributed charges, reducing the unit cost of the shutter of the total cost of the prescribed charge, reducing the cost of loading wells distributed charges, and simplify the process of dissipation of charge in the borehole, utilization of rubber-materials.

These objectives are achieved by the fact that in the method of dispersing the charge in the well, including the creation of air gaps using elastic downhole valves, the diameter of which exceeds the diameter of the hole, lowering into the borehole to a predetermined depth, the situation fighters in each charge, the mounting of the detonating cord according to the invention, the air gaps are created with the help of elastic borehole shutter, made of rubber material, which is deformed and the associated extra rope on the main rope is lowered into the borehole to a predetermined depth, which regulate the use made of the main rope marks, where the elastic borehole shutter release from ropes with one end of the main rope associated with more rope, then the rope is removed from the well, and the elastic borehole shutter placed a seal, on which was placed a Thriller and part of the charge, and then to the same core rope in deformed and the bound form binds the following elastic borehole shutter, lowered it into the well to a predetermined depth and the whole procedure is repeated until an economically and technically reasonable number of elastic closures at the well.

The inventive method is illustrated by drawings, where figure 1 - shows the structure of an elastic borehole shutter; figure 2 - setting elastic downhole valve in the well to a predetermined depth; figure 3 - diagram of the downhole charge dispersed by air gaps;

The method is as follows. Previously in the shop preparing elastic squag the config shutter, why, for example, cut waste tire automotive tires in half in diameter. Then fold each half in the form of elastic borehole shutter 1, as shown in figure 1, clamp it in a clamp and bind an extra rope 2. From all additional rope 2 form a simple knot, which is tied so that the end of the 3 free slip at the right time. So prepare the required number of elastic downhole valves and then bring them to the prepared explosive block. At the bottom of the well to a depth of N lower action 4 and produce the charging wells to a depth of H1. Then by the end of 3 additional rope 2, which is associated elastic borehole shutter 1, tie the main rope 5 node 6 to one end of a rope 5 covered elastic loop borehole shutter, and bring him down to a depth of H2that is determined by the marks on the rope 5 (for example, strips of colored paint or the knots on the rope). Pulling the end of the rope 5, a simple knot, which is associated elastic borehole shutter, pull both ropes are removed from the well. Due to the energy stored elastic borehole shutter at the time of its deformation, it spread in the well for a fraction of a second and cuts edges in the walls of the well. On the elastic borehole shutter 1 is placed a seal, such as bag of n is d explosives, the seal is placed next action 4 and the part of the charge to the depth of H3. Then at a depth of H4on the same rope in the well is lowered following prepared in advance in the shop, elastic borehole shutter and the whole procedure is repeated until an economically and technically reasonable number of elastic downhole valves in the well.

A specific example of the method.

Charging wells produced at JSC incision Kedrovskij mountain station # 2 in the explosion of rocks consisting of Sandstone and siltstone, interspersed depth fortress 4-5 on a scale professional Protodiakonov MM Block was drilled by the drilling machine SBS-N with grid 6 m 7 m, depth 16 m and a diameter of 215.9 mm Wells drilled vertical. On the passport of the explosion, the mass of the charge in the borehole was 350 kg of the Inventive method was tested on 7 wells. In these wells, the charge was reduced to 35 kg. the Total length of the charge in the borehole amounted to 9.0 m (the lower part of the charge 6 m or 210 kg, the upper 3.0 m or 105 kg). Charging wells was carried out as follows.

At the bottom of a borehole to the detonating cord lowered his sword TG-P. Then realized mechanized charging the bottom of the well granulites NC by emergency vehicles MZ-3B in volume 210,5 kg. then at the height of 2 m from the bottom of the charge (air gap) set the wheelie elastic borehole shutter, made from waste tires, which lowered the main rope placed on her pre-strain and the associated additional elastic rope downhole valve in the well to a depth of 8 m (6 m length of the lower charge and 2 m air gap), which was identified on labels on the main rope. Pulling the end of the main rope, untied the knot that tied the elastic borehole shutter. Then the rope pulled on the earth's surface, and the elastic borehole shutter placed a seal (e.g., bag from explosives). Then the seal was put on the detonating cord detonator TG-P and manually from bags fell asleep 105 kg granulite NC. Thus was charged with 7 wells. Before the explosion was measured distance from the surface to the top of the charge in the well. It is during charge of the whole unit (5 days) did not change. Despite the fact that the magnitude of the charge has been reduced by 18,75%, the quality of training blasted rock seven monitoring wells remained the same as in the rest of the wells.

The inventive method the distribution of charge in the well allows you to:

- due to the exclusion of expensive high-tech equipment (mobile power station, mobile compressor, etc. and highly skilled workers is to reduce the complexity of the charger, side buttons the Oia wells distributed charges, significantly reduce the unit cost of the shutter and its installation in the total value of charge;

- dispose of waste rubber materials: tires, worn ropes, conveyor belt, etc.;

- to simplify the process of dissipation of charge in the well.

The way the distribution of charge in the borehole, including the creation of air gaps using downhole valves, the diameter of which exceeds the diameter of the hole, lowering into the borehole to a predetermined depth, the installation of fighters in each charge, the mounting of the detonating cord, characterized in that the air gaps are created with the help of elastic borehole shutter, made of rubber material, which is deformed and the associated extra rope on the main rope is lowered into the borehole to a predetermined depth, which regulate the use made of the main rope marks, where the elastic borehole shutter release from an additional rope with one end of the main rope, after which both ropes are removed from the wells, and the elastic borehole shutter placed a seal, on which was placed a Thriller and part of the charge, and then to the same core rope in the deformed and the bound form binds the following elastic borehole is atwar, lowered it into the well to a predetermined depth and the whole procedure is repeated until an economically and technically reasonable number of elastic closures at the well.



 

Same patents:

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.

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FIELD: blasting.

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The invention relates to mining and can be used for loading wells by blasting in mining

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4 dwg, 1 ex

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FIELD: bursting operations and charges used for such operations.

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The invention relates to mining, particularly to blasting in this area

FIELD: bursting operations and charges used for such operations.

SUBSTANCE: proposed method is widely used in bursting technologies, mining art for breaking rock, oversizes, underground working by drilling and bursting operations. Charge is formed at point where drilling and bursting operations are to be performed; charge is formed by mixing two explosion-proof components; prior to filling the envelope of charge, temperature of each component is brought to magnitude within the following range tb.p.>t1,2>tcr, where t1,2 is temperature of each component; tb.p. is boiling point of component of lesser boiling point and tcr is crystallization temperature of component which is higher than that of other component; envelope is first filled with component of lesser density. Charge is proposed in two versions: in form of elastic envelope used mainly for descent blast-holes (wells) and in form of rigid polymer tin with changeable covers: transportation cover and working cover.

EFFECT: enhanced safety and efficiency of performing drilling and bursting operations.

4 cl, 5 dwg

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