SU578457A1 - Method of turning about a mining machinery set - Google Patents

Description

one

The invention relates to the field of mining reservoir, mainly coal, mineral deposits by underground mining.

The known method of turning the mechanized complex through 180 ° includes carrying out preparatory workings, working out the excavation column with the mechanized complex and then turning it when moving from the spent column to the newly cut without re-installing the lava equipment 1.

The disadvantage of the method is that the lining sections nearest to the center of the pivot turn out to be under increased pressure from the roof due to their low speed of movement, which results in frequent rock outfalls from the roof, deformation of the kerpy sections and a decrease in the rate of turn.

Closest to the invention is a method of turning a mechanized complex, which includes carrying out bypass production and turning mechanized complex when transferring it from a developed column to a new one.

However, this method has the same disadvantage due to the following reasons. In the production of mechanized reversal comp. slowest speed

The feats have lining sections nearest to the center of the turn. With frequent advancing by a small step (10–15 cm) of the lining sections nearest to the center, the so-called “stomping of the roof” occurs, which is a consequence of the fact that the sections operate in a constant mode of expansion and unloading for a long time in almost the same place. This causes a violation of the integrity of the roof rocks, their cracking and delamination, as there is a loss of the roofing ability of the layers. In this case, the rock pressure for the lining sections nearest to the center of rotation increases more than three times, as a result of which these sections become difficult to recover - they unfold both in the plane of the reservoir and in the vertical plane, tilting to the bottom, or towards the developed space, necessitating their correction. In addition, the likelihood of the sections landing on the rigid, i.e., zero jacks of the uprights of the vertical jacks, and their damage, after which the sections need to be dismantled or, at best, reinforced with individual stands, increases. In addition, the dumps of rocks of a weakened roof into a reefing area require the stopping of the clearing slab and the labor-intensive time and the manual pile, l to eliminate them. The execution of a bypass development in the form of a semicircle is inconvenient from the point of view of its accuracy and use, since when sinking this excavation requires constant and complex surveying control, difficulties arise in laying a rail track of a given profile.

All this complicates the turn and leads to a decrease in the speed of advancement of the bottom, which to the greatest extent determines the efficiency of the turn of the mechanized complex.

The aim of the invention is to increase the rate of turn of the mechanized complex without deteriorating the condition of the roof at the center of the turn.

This is achieved by removing the group of sections of the support of the mechanized complex at the center of the turn for the time of the turn of the latter, and supporting the roof with individual bottomhole and landing supports.

FIG. 1 shows a diagram of the development of work at the turn of the mechanized complex; in fig. 2 - node I.

From the haulage field main roadway 1, the reservoir field haulage 2 and the ventilation 3 roadways, a conveyor belt 4 is connected, connected with the slope 5, and the ventilation belt 6 is raised to the walls. The cleaning face 7 was equipped with a mechanized complex 8, which is deployed along a broken circumferential excavation of 10th glade 9. The area where the lining is dismantled is secured with individual bottomhole metal 11 and 12 landing gear.

At the approach of complex 8 to the clearing 9 at a distance approximately equal to the length of the lava, the complex is rotated through 180 ° without dismantling it. Before this, a group of mechanized lining sections in the immediate vicinity of the center of the turn is dismantled and stored on the haulage drift, and the roof is maintained in this area in the face of the face of the lava with an individual metal hole bolt lining 11, and the roof is landed on the wooden landing lamination 12. Verlch the clearing point is deployed on a bypass. broken production 10. Replaced minerals from the clearing hole 7 through conveyor belt 4 are transported to the ramp 5 and through it are delivered by gravity to the field haulage track 1 and then sent to the output shaft. A fresh stream of air through the drifts 1 and 2 is guided along the rails 4

and 6, it washes the cleaning bottom 7 and, by the development of 10, is sent through the track 9 to the ventilation main drift 3. Maintenance of the bathersberg 4 and 6 from the side of the worked out space is carried out by the installation

over the entire length of the production of additional lining 12. After the turn, the dismantled sections are re-installed, and thus the mechanized lining maintains the roof rocks throughout

cleansing slaughter 7.

Claims (2)

1.Grundman I. Experience in using shield support. - “Glucauf 1973, jMb 3, pp. 65-69. 2. Kovalevich P.M. et al. Results of the experiment for turning the hydroficated complex by 90 °. Collection of scientific papers KuzPI, 1973, No. 59, p. 59-61.