SU960443A1 - Preparotary working timbering for steep beds - Google Patents

Description

(54) STRAP OF PREPARATORY DEVELOPMENTS FOR TIGHT PLATES

one

The invention relates to rock formations, specifically to the fixing of preparatory mine workings for conditions of steep seams.

Known lining preparatory workings, including the upper to the rack, hinges and nodes of compliance 1.

The closest technical solution to the invention is to construct lining preparatory workings for steep reservoirs, including a composite upper, connected by a node of compliance, upper and lower girders, and pillars 2.

The serious drawbacks of these structures are the insufficient stability of the nodes of compliance and hinges in the longitudinal direction, since the tie bars connecting the rams are not sufficiently strong and are located between the nodes of compliance and hinges, which leads to the effect of bending forces on the nodes of compliance and bulging of the hinges in longitudinal direction.

The purpose of the invention is to improve the stability of the lining.

The goal of the foam is achieved by the fact that the bottom girders are rigidly connected to the uprights and pivotally to the top.

and the top girders are rigidly connected to the node of the upper knot, and

. .Also with the fact that 1larnnaya connection: the top of the top with the bottom 1m run is made

 but in the form of nests formed by gory-. vertical and vertical partitions.

Figure 1 shows the lining in the cross-section of the excavation, front view / figure 2 - lining along the excavation, side view.

. The support includes upper to 1 consisting of Two elements connected

15 overlapped by a knot 2 of ductility, an upper girder 3 rigidly connected to the knot of a ductile ;;, two lower girders 4 and racks 5. The elements of the upper kan 1 are hinged on the lower girders 4, in which for this are provided slots 6 formed, for example, partitions.

Racks 5 are rigidly connected to the bottom. mi runs 4 through the linings

25 7, which are rigidly connected to the run-through (for example, welding) and with the struts by bolts 8. The clamping of the elements of the top 1 in the flexibility assembly 2 is achieved by wedges 9.

thirty

The support works as follows;

When the pressure is applied to rock forces, which are directed on steep seams, approximately at an angle of 30 to the horizon, the elements of the tops 1 are biased in shifts at nodes 2 and rotated in slots 6, resulting in a reduction in the length of the tops, and Achievement of required lining is achieved.

Since the pillars have hinges at two ends (the hinge connection 10 with the purlin and resting the pillars on the soil is also a hinge), the rocker, under the effect of compression from the rocks, is supplied together with the top, which ensures the stability of the lining. 15

The implementation of the proposed lining of the preparatory workings will allow for the expense of increasing the longitudinal stability of the lining and lowering. 20 nor the cost of its individual elements, reduce the annual costs of its construction and maintenance,

Claims (2)

1. Strengthen preparatory workings for steep seams, including a composite upper,. The upper and lower girders and struts are connected by a knot of compliance, characterized in that, in order to increase the stability of the lining, the lower girders are rigidly connected to the uprights and pivotally to the top, and the upper girders are rigidly connected to the node of the upper gland. 2. Fix it according to Claim 1, so that the hinged connection of the upper and lower girders is made in the form of sockets formed by horizontal and vertical partitions. Sources of information taken into account in the examination 1. USSR author's certificate. 619666, class, E 21 O 11/14, 1976. 2. USSR author's certificate No. G88632, class. E 21 D 11/14, 1978. B S h N,