RU1795109C - Movable shield-type support - Google Patents

Abstract

The invention relates to mining and m, b. used for processing steep coal seams. The goal is to increase the efficiency of the use of lining during the development of steeply falling seams of low and medium power coal. The lining includes spherical elements (E) 1 made in the form of balls and a flexible bearing (3, which is diametrically passed through E 1. Inside E 1 there are latches 2 made in the form of an L-shaped bolt and used to fix E 1 to E 3. 9 silt.

Description

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The invention relates to the mining industry and can be used to guard against collapsed rocks and to partially maintain bottom hole space when mining steeply dipping formations of low and medium power coal.

Known designs of flexible ceilings, which include flexible and semi-flexible elements ,, Јв; interconnected in various ways. The main disadvantage of these flexible floor structures is the inability to use them when mining steep formations with a thickness of less than 3.0 meters.

Suspended sectional support is also known, including individual sections interconnected by ropes, chains or other flexible elements. The disadvantage of such a lining is the accident rate of the sections, due to their capsizing and the formation of a gap between the waste space and the face. Due to the overturning (turning) of the section relative to the formation, the area of its overlap is reduced, as well as the breakthrough of collapsed rocks into the bottom hole. A significant disadvantage is also the high metal consumption and the cost of sectional support.

The closest technical solution is a flexible dividing overlap for separating ore from overlying rocks, made in the form of spherical cells, including chunks strung on a rope and metal grids laid on them.

The known technical solution cannot be used in mining steep coal seams due to overlapping (crawling) overlap on soil rocks and its subsequent overturning. In addition, the known overlap is difficult to manufacture.

The aim of the invention is to increase the efficiency of the use of lining in the development of steeply falling seams of low and medium power coal.

The goal is achieved in that the movable enclosing lining includes separate dividing elements placed on a flexible supporting element passed through them, the dividing elements being made in the form of balls, and the flexible supporting element passing diametrically through them, each ball having locks for securing the ball on the flexible carrier.

Figure 1 shows the construction of a movable enclosing roof support; figure 2 is the same section; in Fig. 3, 4 is a diagram of the extraction of coal in a mechanized way with a movable barrier lining; in Fig.5 is a section a - a in Fig.Z; Fig.6 is a section bB in Fig.4; on Fig.,. 8 is a diagram of a coal excavation in a hydraulic manner with movable enclosing lining; Fig.9 is a section bb in Fig.8.

The movable enclosing lining contains concrete (possibly rubber-solid or rubber-hollow, carbon-cement, slag-cement, etc.) balls 1, fixed with clips 2 on a flexible

the supporting element (rope) 3. The concrete balls 1 are connected to the rope 3 by concreting. a rope on which diameters of 2 different sizes are mounted. Clamps

made in the form of a T-bolt with holes on both sides for the possibility of connecting the clips in pairs. A rope is passed inside such a joint. , Moving enclosure works as follows.

As you work out and move clean. leg 4 is self-supporting lining on the face. The movement of the lining to the bottom occurs under the action of the pressure of the collapsed rocks 5 and the dead weight of the lining with the downward direction of the coal excavation. Fencing of the treatment face from collapsed rocks and partial maintenance of the bottomhole space is carried out

balls 1. The ability to rotate the ball relative to another ball and the formation is due to the gap between the balls and the bending of the supporting element (rope) 3.

The development of coal reserves using the movable-enclosing roof support of the proposed design is carried out by the aimless technology, which virtually eliminates the loss of coal in the bowels. Excavation

the coal from the treatment slab is conducted without the presence of people in it, which increases the safety of work and improves the sanitary and hygienic working conditions.

Formula and Movable enclosing lining comprising separate dividing elements placed on a flexible supporting element passed through them, characterized in that, in order to increase the efficiency of lining use

small steep coal seams of low and medium power, the spacer elements are made in the form of balls, and the flexible carrier element is diametrically passed through them, with each ball having locks inside to secure the ball to the flexible carrier element.