Method for dispersal of charge in watered well and device for its realisation

FIELD: mining.

SUBSTANCE: method for dispersal of charge in watered well includes creation of air gaps with the help of pneumatic locks, prior to lock lowering into well, a sinker is fixed onto connection tube, connection tube with fixed sinker and attached pneumatic well lock is lowered into well down to a specified depth. Lock is pumped with air up to a specified pressure, connection tube is separated from it and is withdrawn together with sinker from well. Then the whole sequence is repeated. Sinker is made in the form of welded structure, which consists of hollow cylinder with cover framed with dome, which is made of bars, in cylinder cover there is a hole made with diametre equal to 1.1 of connection tube external diametre, at the same time lower ends of dome bars are fixed to lower ring of oval shape, made of the same bar, upper ends of dome bars are fixed to upper ring, internal diametre of which is also equal to 1.1 of connection tube external diametre, lower part of cylinder is fixed to dome by means of links, and with its cover it is fixed to dome.

EFFECT: reduced specific consumption of water-emulsion explosives.

2 cl, 1 ex, 3 dwg

 

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

Under the existing drilling and handling equipment one of the most effective methods of intensification of rock crushing, reduction of specific consumption of explosives (hereinafter CC), 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 borehole (RF patent No. 2235971, IPC F42D 1/02, F42D 1/08, publ. 10.09.2004, bull. No. 25), including the creation of air gaps using downhole valves, installation of fighters in each charge, the mounting of the detonating cord, creating air gaps using downhole pneumatic shutter (hereinafter PZ), a diameter which exceeds the diameter of the hole, with pneumatic downhole valve in a compressed form is lowered into the well on tubing to a predetermined depth, which regulate by means of a connecting tube, and then inflate it with air to a predetermined pressure, after which the connecting tube is separated from the downhole pneumatic shutter and pull it out of the well, and the shutter is placed Thriller and part charge, then this is soedinitelnoj tube immersed in a compressed form following downhole pneumatic shutter to a predetermined depth and the whole procedure is repeated until an economically and technically reasonable number of pneumatic downhole valves in the well.

The disadvantage of this method is that it cannot be used in water-cut wells with a large column of water, as when lowering the downhole pneumatic shutter in a compressed form into the well, the speed of its immersion in water is very small, and during the filling of the downhole pneumatic shutter air in the water it is affected by buoyancy force, bias downhole pneumatic shutter from a given depth, which prevents the creation of accurate geometrical parameters of the dispersed charge.

Known sinker (Big encyclopedia: 62 volumes. V.13. - M.: TERRA, 2006, s), including cargo, fixed on the connecting tube with a possibility of free movement on it.

A disadvantage of the known device is that when using known weights air-filled pneumatic shutter difficult to keep so that the hole through which the downhole shutter is filled with compressed air, was at the top, and PZ was positioned vertically, which prevents the creation of accurate geometrical parameters of the dispersed charge.

The objective of the invention is to facilitate lowering the downhole pneumatic bolt in the hole and hold it when it is filled with air at a specified depth in a vertical position.

The technical result of the invention is to reduce the specific consumption of water-based explosives (hereinafter CC) through the creation of accurate geometrical parameters of the dispersed charge, extending the scope of application of the pneumatic downhole valves, namely flooded wells with any water column.

This technical result is achieved in that in the method of dispersing the charge in well watered, including the creation of air gaps using pneumatic downhole valves, the diameter of which exceeds the diameter of the hole in which the pneumatic downhole valve in a compressed form is lowered into the well on tubing to a predetermined depth, which regulate by means of a connecting tube, and then inflate it with air to a predetermined pressure, after which the connecting tube is separated from the downhole pneumatic shutter and pull it out of the well, and the shutter is placed Thriller and part of the charge, then on the same tubing immersed in a compressed form following pneumatic downhole shutter to a predetermined depth and the whole procedure is repeated until an economically and technically reasonable number downhole pneumatic valves in the well, according to the invention, prior to lowering the bolt in the hole to connect the through tube fixed sinker, why pass through the connecting tube through the hole in the dome and cylinder weights put on the connecting hose clamp, then to the connecting tube attached pneumatic downhole valve in a compressed form, adjust the length of the lower part of the connecting tube so that the downhole pneumatic shutter was located in the inner cavity of the dome weights on half of its length in a compressed form, fix sinker on the connecting tube with clamp, lower connecting tube with impaled on her line and sinker attached downhole pneumatic bolt into the borehole to a predetermined depth, is pumped downhole pneumatic shutter with air to a predetermined pressure, is separated from it connecting tube and remove the connecting hose together with the sinker from the well, after which the connecting tube is attached next EP in a compressed form and rest of the procedure repeated.

This technical result is also achieved by the fact that in the sinker, including cargo, fixed on the connecting tube with a possibility of free movement on it, according to the invention, the load is made in the form of a welded structure, which consists of a hollow cylinder with cover, lined canopy, made of rods, cylinder head made a hole on what amerom, equal to 1.1 external diameter of the connecting tube, the lower ends of the rods dome fixed to the lower ring oval in shape, made of the same rod, the upper ends of rods dome fixed to the upper ring, the internal diameter of which is equal to 1.1 external diameter of the connecting tube, the lower part of the stationary cylinder is connected to the dome with the help of jumpers, and the lid still connected to the dome.

The inventive method and device are illustrated by the drawings, where figure 1 shows a General view of the design weights in the cut with located therein a pneumatic charge; figure 2 shows a diagram explaining the method of dispersing the charge in flooded wells; figure 3 shows sinker.

Declare sinker is a welded structure consisting of a hollow cylinder 1, which serves as a weighting of the whole structure, with the cover 2, framed dome 3, made of bars. The dome is made of rods so that when the possible collapse of the rocks with the mouth or with the borehole walls, pieces of rock is not jammed sinker in the well when it is ejected from the well. In the cover 2 of the cylinder 1 made 4 hole diameter equal to 1.1 external diameter of the connecting tube 5. The size of the diameter of the hole 4, equal to 1.1 external diameter of the connecting t the skirts 5, lets declare the sinker to move freely through the connecting tube 5. The lower ends of the bars of the dome 3 is welded to the bottom ring 6 oval in shape, made of the same rod. The oval shape of the lower ring 6 is designed to hold the downhole pneumatic shutter 7 in the inner cavity of the dome. To ensure the rigidity of the upper ends of the bars of the dome 3 is welded to the upper ring 8, the inner diameter of which is equal to 1.1 external diameter of the connecting tube 5 and the lower part of the cylinder 1 is welded to the dome 3 with the help of jumpers 9.

The method of dispersing the charge in well watered carried out and the device operates as follows. The connection tube 5 is passed through the hole of the upper ring 8 of the dome 3 and the opening 4 in the cover 2 of the hollow cylinder 1. On the connecting tube 5 put the clamp 10, which serves for fastening of the inventive device on the connecting tube 5. The outer diameter of the clamp 10 exceeds the internal diameter of the ring 8 and the diameter of the hole 4. Next, on the lower part of the connecting tube 5 is placed in a compressed downhole pneumatic shutter 7 and regulate the length of the lower part of the connecting tube 5 inside the dome 3 so that PZ 7 was placed inside the dome 3 half its length in a compressed form. PZ is placed inside the dome graziana half its length in a compressed form, in order PZ is not jammed in the claimed device and is not pushed before PZ will inflate with air to a predetermined pressure. Then tighten the clamp 10

At the bottom of the well is lowered action 11 and place the part of the explosive charge 12 to a depth H (figure 2). Compressed downhole pneumatic shutter 7 by using the claimed weight is lowered into the borehole to a predetermined depth H1leaving water gap 13, and fill PZ air. Sinker holds the FOV in the vertical position. After this connecting tube is separated from the PZ and together with the sinker removed from the wells PZ put the following action 11, post the next part of the explosive charge 12 and the whole procedure is repeated until an economically feasible number of pneumatic downhole valves in the well.

A specific example of the method.

Charging wells produced at JSC cut Boruszewski mountain station # 1 in the explosion of rocks consisting of Sandstone and siltstone, interspersed depth fortress 7-10 on a scale professional Protodiakonov MM Block was drilled by the drilling machine SBS-200 No. 261 with a grid of 5 m to 6 m, depth 15 m and a diameter of 215.9 mm Wells drilled vertical. The height of the water column ranged from 5 to 12 meters Total number of exploding wells was 220 pcs. passport explosion, the mass of the charge is the borehole was 474,3 kg The inventive method was tested on 105 wells. In these wells, the charge was reduced to 102 kg the Total length of the charge in the borehole was 7.3 m (the lower part of the charge is 5 m or 255 kg, top - 2.3 m or 117.3 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 wells of Siberia in the amount of 255 kg then at the height of 2 m from the bottom of the charge (water gap) has established a pneumatic shutter, which lowered mounted on the connecting tube sinker placed in it in a compressed form PZ in the well to a depth of 8 m (5 m length of the lower charge and 2 m - water period) and filled PZ air to a predetermined pressure. Separated from PZ connecting tube. Then sinker is pulled out together with the connecting pipe from the well to the surface, and PZ lowered by detonating cord following piece TG-P and using the charging machine made loading the upper part of the charge. Thus, it was charged 105 wells. Despite the fact that the value of the charge was reduced by 21.5%, the quality of training of blasted rock mass remained the same as in the rest of the wells.

The inventive method the distribution of charges in the flooded wells using weights allows you to:

- to expand the scope of pneumatice the fir gates, namely to use PZ in flooded wells with any water column,

- through the creation of accurate geometrical parameters of the dispersed charge to reduce the specific consumption of water-based EXPLOSIVES.

1. The method of dispersing the charge in well watered, including the creation of air gaps using pneumatic downhole valves, the diameter of which exceeds the diameter of the hole in which the pneumatic downhole valve in a compressed form is lowered into the well on tubing to a predetermined depth, which regulate by means of a connecting tube, and then inflate it with air to a predetermined pressure, after which the connecting tube is separated from the downhole pneumatic shutter and pull it out of the well, and the shutter is placed Thriller and part of the charge, then on the same tubing immersed in a compressed form following downhole pneumatic shutter to a predetermined depth and all the procedure is repeated until an economically and technically reasonable number downhole pneumatic valves in the well, characterized in that before lowering the bolt into the hole on the connecting tube is fixed sinker, which pass through the connecting tube through the hole in the dome and cylinder weights put on the connecting hose clamp, then connect Inoi tube attached pneumatic downhole valve in a compressed form, adjust the length of the lower part of the connecting tube so that the downhole pneumatic shutter was located in the inner cavity of the dome sinkers half of its length in a compressed form, fix sinker on the connecting tube with clamp, lower connecting tube with impaled on her line and sinker attached downhole pneumatic bolt into the borehole to a predetermined depth, is pumped downhole pneumatic shutter with air to a predetermined pressure, is separated from it connecting tube and remove the connecting hose together with the sinker from the well, after which the connecting tube is attached next EP in a compressed form and rest of the procedure repeated.

2. Sinker, including cargo, fixed on the connecting tube with a possibility of free movement on it, characterized in that the shipment is made in the form of a welded structure, which consists of a hollow cylinder with cover, lined canopy, made of rods, cylinder head made a hole diameter equal to 1.1 external diameter of the connecting tube, the lower ends of the rods dome fixed to the lower ring oval in shape, made of the same rod, the upper ends of rods dome fixed to the upper ring, the inner diameter to the showing also equal to 1.1 external diameter of the connecting tube, the lower part of the stationary cylinder is connected to the dome with the help of jumpers, and the lid still connected to the dome.



 

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