RU2291395C2 - Device for localization of the borehole blasting circuit components - Google Patents

Abstract

FIELD: mining; other industries; devices for localization of the components of the borehole blasting circuits used in the drilling-and-blasting operations.

SUBSTANCE: the invention is pertaining to the field of drilling-and-blasting operations in the strong rocks and may be used in the various branches of industry applying the drilling-and-blasting operations in the mountain ranges of the rocks. The device for localization of the components of the borehole blasting circuit includes the cylinder, the mounted on its shaft with the capability of rotating carrying bar with the spreading tool and the detachable cover. The device is supplied with the metallic shell with the mounted in its lower part cross piece, on which the carrying bar is fixed. At that the cylinder along its axis is cut into pieces, which are supported by pins to the cross piece. The spreading tool is made in the form of the fixed on the carrying bar cams mounted with the capability to interact with the eccentrics arranged opposite to the cams on the cut parts of the cylinder. The detachable cover is installed on the shell and supplied with the locking component. The invention allows improving the safety of the drilling-and-blasting operations due to reliable covering of the components of the borehole blasting circuit prior to the beginning of wiring of the surface blasting circuit.

EFFECT: the invention ensures improvement of the safety of the drilling-and-blasting operations, reliable covering of the components of the borehole blasting circuit prior to the beginning of wiring of the surface blasting circuit.

5 dwg

Description

The invention relates to the field of drilling and blasting in strong rocks and can be used in various industries using blasting in rock massifs of rocks.

During the production of mass explosions, explosives (BB) are charged with a large number of wells for several days [1]. This complicates the organization of work: constant round-the-clock protection of the charged blocks is required due to the presence on the surface of the ledges of the blast network elements - parts of detonating cords (LH) emerging from the wells that may be used unauthorized, as well as high danger - collisions with LH are possible, which entails danger of premature charge explosion.

Known cover-pointer charged wells, including a cylindrical body and a cover, which, in order to increase the safety and reliability of blasting, is equipped with a spacer located in the lower part of the body and connected by traction to the cover, in which a sealed cavity is made [2]. The device is inserted into the mouth of a charged well, which is not 0.5-0.6 m full of stemming, the DS is placed in an airtight cavity and the expansion device is burst by turning the rod with the help of a figured nut. It will protect the LH from jamming and, according to the developers, will protect the LH from accidental collisions of mining vehicles and will serve as an indicator for finding a well in difficult weather conditions.

If you can agree with the last argument, then the protection against collision is doubtful, since the device rises above the well and will inevitably be crushed by heavy mining vehicles, especially in difficult weather conditions. In addition, it will not be difficult to open the device and remove the DS from it, because the nut does not protect against unauthorized access.

The technical problem to which the invention is directed is to increase the safety of blasting operations due to the reliable shelter of the elements of the explosive network before the installation of the surface explosive network.

The object is achieved in that the device for localizing the elements of the borehole blast network, including a cylinder mounted on its axis with the possibility of rotation of the supporting rod with a spacer and a removable cover, according to the invention, is equipped with a metal shell with a cross installed in its lower part, on which is fixed a supporting rod, while the cylinder along its axis is cut into parts that are attached to the crosspiece with pins, the spacer is made in the form of a hook mounted on a supporting rod Achkov installed with the possibility of interaction with eccentrics located opposite the cams on the cutting parts of the cylinder, and a removable cover is mounted on the shell and is equipped with a locking element.

Figure 1 schematically shows a device for the localization of the elements of a borehole blast network in a well before it is unfastened, in figure 2 - in a working position in a well, in figure 3 - after the localization of elements of a borehole blast network, in figure 4 - a section along A -A in figure 1, figure 5 - node B in figure 1.

A device for localizing elements of a borehole blast network includes a cylinder 1 made of metal or plastic mass with a diameter of 4-8 mm less than the diameter of the well and cut along the longitudinal axis, for example, into 4 parts. A support rod 2 with cams 3 is mounted on its axis. Opposite the eccentrics 4 are placed on the split parts of cylinder 1 opposite the cams 3. The support rod 2 is mounted on the spider 5, which is mounted in the lower part of the metal shell 6 with washers 7 and is rotatable parts of the face 8 for the socket wrench. Tubes 9 are fixed on the crosspiece 5, into which the pins 10 are inserted from the parts of the cylinder 1. In the casing 6, a hole 11 is made under the pin 12 of the removable cover 13 provided with a locking element 14, and a protrusion 15 under the tongue of the locking element 14.

A device for the localization of elements of a downhole blast network operates as follows. On the surface of the block, the device is assembled into a structural element. To do this, the pins 10 of the parts of the cylinder 1 are inserted into the tubes 9, the initiating pulse conductor 16 (the waveguide of the non-electric system or the detonating cord) is passed through the cylinder 1 and the windows of the spider 5 and in this form the device is lowered into the well 17 by the length of the arm for the spider 5. In this case, the clogging 18 should not abut against the device.

After that, with a socket key, for example, a balloon key from a truck, with the help of the faces 8, the support rod 2 is turned at a certain angle. In this case, the cams 3 rotate and burst the split parts of the cylinder 1 with the help of eccentrics 4 into the walls of the well 17, fixing the device to a predetermined depth in the well. Then, the conductor of the initiating impulse 16 is rolled into a cove, the detonator kneels down and manually puts it into the cavity of the metal shell 6. After that, the key is inserted into the locking element 14, made, for example, in the form of an English lock, and using the key ring as a supporting element, lift the removable cover 13, insert the pin 12 into the hole 11 and latch the tab for the protrusion 15. The conductor of the initiating pulse 16 is reliably protected - the device is installed deep enough in a narrow well, which really eliminates driving a career vehicle, the lid is locked with a locking element, there are no protrusions on it for which it can be removed. It protects against access both the support bar, eliminating the possibility of arbitrary removal of the device from the well, and the conductor of the initiating pulse. To facilitate installation and removal, the removable cover 13 opposite the pin 12 and the pin 12 itself are beveled along the edge, and the hole 11 has a chamfer. The execution of the cover according to the diameter of the metal shell 6 protects it from a possible act of vandalism (intentional exposure to jamming, for example, scrap with a crowbar). The mechanical protection of the downhole blast network will make it possible to abandon the armed guard and increase the reliability of the storage of explosive materials on blocks, since recently the human factor has become increasingly the reason for the theft of explosive materials.

Before starting the installation of the explosive network, the detonator tilts, unlocks the locking element of the device, removes the cover 13, using the key in the lock as a handle. By turning the cams 3 in the opposite direction, removes the device spacer into the borehole walls, pulls out the initiating impulse conductor, unwinds it and, removing the device from the borehole 5 for reuse, releases the initiating impulse conductor, which slides out of cylinder 1. Then they begin mounting the surface explosive networks in the usual way.

Thus, the inventive device for the localization of elements of a borehole blast network allows you to reliably protect the borehole blast network from unauthorized use from the moment of charging the wells to the beginning of the installation of a surface blast network, increasing the safety of blasting operations, thereby achieving the technical task.

Information sources

1. Babayants G.M., Evsin V.G., Nikolaev K.P. Improving blasting in mining enterprises // Mining Journal. 1995. - No. 12 (prototype).

2. Cover pointer charged wells. A.S. USSR No. 727849. E 21 C 37/00, F 42 D 5/04. 1980 (prototype).

Claims (1)

A device for the localization of elements of a borehole blast network, including a cylinder mounted on its axis rotatably with a supporting rod with a spacer and a removable cover, characterized in that the device is equipped with a metal shell with a cross installed in its lower part, on which the supporting rod is mounted, this cylinder along its axis is cut into parts that are attached with pins to the cross, the spacer is made in the form of cams mounted on a support rod, installed with possible the interaction with eccentrics located opposite the cams on the split parts of the cylinder, and a removable cover is mounted on the shell and is equipped with a locking element.

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