RU120706U1 - WEDGE SAFETY SHELF AT DEPTH OF VERTICAL SHAFT SHAFT - Google Patents

Abstract

Wedge safety shelves when deepening vertical shafts of mines, including an inclined plane entering the fender niche, a buffer distribution-weighting plate, a cushioning fire made of beams, supporting bearing beams, characterized in that the shelves are divided in a vertical plane parallel to the supporting beams into two parts, offset relative to each other in height.

Description

The utility model relates to the mining industry, in particular to its mining industry.

The depth of vertical trunks is an increase in their length in order to open new horizons for the extraction of minerals (ores, etc.).

The most effective is the deepening of the vertical shafts of the mines until the final development of the existing horizons without stopping the delivery of rock and minerals to the surface.

With this scheme, the recesses of the vertical shafts must be covered by completely different safety devices that separate the deepened part of the trunk from its upper part, in which equipment for the extraction of rock and ore continues to operate.

Most preferred with respect to the speed of construction and the possibility of location in the previously traveled part of the vertical barrel are artificial safety shelves with full overlap in terms of the cross section of the barrel.

Safety shelves that must completely absorb the energy of falling bodies (see, for example, the description of the invention to patent RU No. 2027010 C1, IPC6 E21D 7/00) include a powerful load-bearing structure of load-bearing beams or spatial trusses, which distributes the shock load to the buffer plate, and the shock-absorbing element.

The disadvantage of such well-known safety regiments is that they must be designed to extinguish without damaging the impact load when tunneling equipment (for example, a skip fully loaded with ore) falls from a high altitude.

Known proposed by Professor Fedorov S.A. (see. Fedorov SA. Probing and deepening of vertical shafts of mines. M., 1961. - p. 426-437) wedge safety shelves with inclined planes covered with rails or metal sheet. Inclined reflective planes can go into the fenders in the walls of the barrel. The space between the inclined plane of the supporting beams of the shelf and the wall of the lining of the barrel is filled with concrete, concrete, brick, rubble masonry or wooden beams with a dense rivet. In the event of a rope break and a fall, the lifting vessel hits the inclined plane of the shelf and is thrown into the side fender niche. The main impact force of the falling vessel is directed to the rock walls of the niche. During normal operation of the lifting installation, sprinkles of rock or ore accumulate in the lower part of the niche periodically unloaded in a known manner.

The main advantages of wedge regiments include:

- when a falling body hits an inclined plane of a regiment, a slight decrease in kinetic energy occurs with a change in direction of movement;

- the presence of a braking path that passes the falling body along the inclined surface of the shelf. The greater the braking distance, the less effort the shelves experience;

- transfer of dynamic load in a certain (rather significant) period of time equal to the period of inhibition of the body (vessel), and not instantly.

The disadvantages of the known skip safety regiment include:

- the complexity of installing the supporting beams of the shelf, because in the lining it is necessary to build deep niches at the ends of the beams;

- the impossibility of the location of the fencing niche of the wedge safety shelf on the horizon of shipment of rock from the deepened part of the trunk.

The technical result of the proposed utility model is to simplify the installation and dismantling of an artificial safety shelf and reduce the volume of additional workings.

In the wedge safety shelf for the indentation of the vertical shafts of the shafts containing the known features: an inclined plane included in the breakaway niche, a buffer distribution and weighting plate, a shock-absorbing bonfire made of boards, supporting load-bearing beams, the technical result is achieved by the fact that the shelves are divided in a vertical plane, parallel support beams, in two parts, offset relative to each other in height.

Figure 1 shows a portion of the barrel with a safety shelf.

The wedge safety shelf consists of two parts shifted in height, each of which has an inclined reflective wall 1 and 2, a buffer distribution and weighting concrete slab 3, 4, a shock-absorbing element 5, 6 (a fire made of wooden beams), laid on horizontal support beams 7 , 8.

The inclined reflective plane 1 of the lower part of the shelf enters the fencing niche 9, and a number of support beams 10 form a vertical wall, which keeps the elements of the lower part of the shelf from shifting to the center of the barrel. The dividing wall 11 connects both parts of the shelf.

The upper part of the safety shelf is designed for a large shock load and is mounted under the separation of ore skips, and the lower part of the safety shelf is mounted under the separation of the smaller capacity skips.

Safety shelf works as follows. The inevitable spill, and sometimes the whole mass from the ore skip, falls onto the metal sheet of the inclined plane 2, rolls along it onto the inclined plane 7 and enters the fencing niche 9. The spill from the rock skips falls onto the inclined plane 7 of the lower part of the shelf and also accumulates and also accumulates in the fender niche 9.

When massive lifting vessels (skips) fall into the trunk when they come in contact with inclined planes 7 and 2, the impact load from changing the direction of motion is tens or hundreds of times less than when the kinetic energy of the incident bodies is completely damped.

The shock load when falling onto inclined planes 1, 2 is transferred to the buffer distribution and weighting plates 3, 4, and then through the shock absorbing elements 5, 6 are partially transferred to the supporting load-bearing beams 7, 8, as well as to the barrel walls in the upper part of the safety shelf and the vertical wall of the supporting beams 10. When the incident bodies glide along inclined planes 2 and 1, the kinetic energy decreases due to the friction forces, which is completely extinguished in the fencing niche 9 with the perception of the main shock load by the walls.

The magnitude of the displacement of the parts of the safety shelf is determined by various factors, one of which is the rational placement of equipment for cleaning the rock at the bottom of the barrel.

The displacement of the parts of the safety shelf facilitates their installation and dismantling, as access to them is free from half of the barrel section, and the installation of the lower part of the safety shelf is possible from the rock that fills the sump of the barrel being prepared for the recess.

Claims (1)

A wedge safety shelf with a recess in the vertical shafts of the mines, including an inclined plane included in the fencing niche, a buffer distribution and weighting plate, a shock-absorbing bonfire of beams, support bearing beams, characterized in that the shelves are divided into two parts in a plane parallel to the support beams that are offset relative to each other in height.