SU1164426A1 - Entry-driving method - Google Patents

Abstract

THE METHOD OF CRUSHING OF THE MINING DEVELOPMENT, including the formation of a gap along the perimeter of the mine, drilling of the core along the longitudinal axis of the core, flooding it with water and removing the core, first of all, in order to reduce the labor intensity and improve the safety of work, firstly form the lower horizontal slot, transporting the device into it, leaving a gap at the top, then forming side and upper horizontal cracks cut the core onto the transporting device, plug the slots with cuffs and water, and the core removes compressed air air through tppura in the face isolated from the atmosphere. JT / V / / / 2 hG Vue.l

Description

The invention relates to mining and can be used during mining operations.

The known method of excavation mining l J.

However, he has more labor.

The closest known to the invention is a method of excavation of mine workings, including the formation of a gap along the perimeter of the mine, drilling a hole along the longitudinal axis of the core, filling the gap with water and removing the core 2.

However, this method is time consuming and not safe.

The purpose of the invention is to reduce the labor intensity and increase the safety of work,

In order to achieve the set task, according to the method of penetrating the mountain excavation, including the formation of a slot along the perimeter of the mine, drilling a hole along the longitudinal axis of the core, filling the slot with water and removing the core, first form the lower horizontal slot, wind up the gap in the upper section, then they form side and upper horizontal slots, crush the core onto the transport device, tampon the slots with cuffs and water, and remove the acorn by supplying compressed air through the hole in the bottom isolated from the atmosphere.

Figure 1 shows the formation of a slit for this device; figure 2 - section aa in figure 1; on fig.Z - institution in the slot transporting device; in Fig. 4; section B-B in Fig. 3; on fig.Z - section bb In fig.Z; figure 6 - the formation of the side slits and drilling of the hole along the longitudinal axis of the core; figure 7 - section GG in figure 6; on Fig - drilling the upper slot and the breaking off of the core; figure 9 - cross-section dD in fig.Z; figure 10 - tamponage slit; in fig. 11 - view. E in FIG. 1 in FIG. 12 — the supply of compressed air to a face isolated from the atmosphere; in fig. - core output; on Fig section LC in Fig.13; FIG. 15 is a sectional view of FIG. 13.

The method is carried out as follows.

In the mountain range 1 cut a horizontal slot 2 at the level of the heads

3 rails using the device 4 for the formation of slots, the drill rod which can make swing movements with the drill bit,. installed at its end (Fig.1 and 2).

In the horizontal slot 2 plant t frame 5 with the rails 6, the metal sheet 7 is welded to the bottom, after which the transport device 8 of FIG. 3 is rolled into the slot 2 along the rails 6 by means of the self-propelled platform 9.

Then, the device 4 installed on the platform 9 is drilled out the side inclined slots 11 and along the longitudinal axis of the core of the hole 12. The same horizontal device 4 cuts through the upper horizontal slot 13 to obtain a core 14 with a trapezoidal section, the end of which is cantilever attached to the rock mass 1. At a certain critical length, depending on the area of the core section and the properties of the rock in the place of pinching, a moment of separation of the core from array 1 occurs under the action of the bending moment and cutting force at the place of pinning (Figures 8 and 9). In this case, the critical length Ivh is equal to

cr

- V J –CH sy

(one)

1.p

K - coefficient of fracturing

X ™ t

 bending stress, N / cm;

W is the moment of resistance of the cross section, cm;

S is the area of the core section, cm; - rock density, kg / cm.

The core 14, having a critical length, during a drill and the slot 13 is removed and collapses and the platform of the conveyor device 8 remains, and there is a gap between it and the platform.

A tamping is then performed to prevent air leakage through the gap in the mouth of the well. To do this, in the slots 11 and 13, a rubber cuff 15 is inserted into the mouth of the mouth. Water is pumped under pressure from the upper cuff 15, opening the taps 16 and 17, and water is pumped from the pump 18 to the hole 12, and the water floods the slot 2 through the fracture in the place of the core lamination 14 (Fig. 10 and P).

The water in the slit 2 reaches the compaction 10 of the transporting device and does not enter further into the slit 2, Ta CIM follows all the slits (2, P (left), 11 (right) and 13) are insulated with water barriers, seals (tampons) 10 and cuffs 15 from the atmosphere of the air pressure. Then, the receiver 19, placed on the haulage self-propelled carriage 20, on which the compressor 21 is installed, supplying the receiver with fresh air, is cranked, taps 22 and 23 until the stops 24 touch the core 14 (figures 10 and 11). The conveyor 8 and the carriage 20 are coupled 25. The taps 22 and 23 are opened and compressed air from the receiver 19 is fed into the hole 12, and the slots along the working perimeter are filled with compressed air and the core under the action of an overpressure of the air in the gap isolated from the surrounding atmosphere air, starts together with the conveyor 8 and the trolley 20 to leave the enclosing space (fng.0 - 15) with speed. The withdrawn core from the enclosing space is transported to the landfill, where it is destroyed as needed, for example, by means of a device for mechanical destruction of rocks. The application of the proposed method in comparison with the known ones allows eliminating labor costs for preparing, delivering and charging the bribery substance, reducing the laboriousness of the cleaning works due to the removal of the full core body from the enclosing space, as well as eliminating the danger of work with blasting operations.

5B

7 FiL

17

Fig. View

H (- F

and st.

(pus. 15

Claims (1)

MINING OPERATION METHOD ^ including the formation of a gap along the perimeter of the hole, drilling a borehole along the longitudinal axis of the core, filling it with water and removing the core, which means that in order to reduce the labor intensity and increase the safety of work, they first form a lower horizontal gap, insert the conveying device into it, leaving a gap at the top, then form the lateral and upper horizontal slots, bring down the core on the conveying device, plug the cracks with cuffs and water, and remove the core with compressed air through a hole in a face isolated from the atmosphere. 1164426 2