SU926329A1 - Mine bulkhead - Google Patents

Description

(5) MINE SHIFT

I

 The invention relates to mining and can be used in underground mining of mining systems with the laying of the worked out space for the isolation of mine workings.

An inflatable shaft bridge is known, consisting of a frame made of two concentrically arranged sections connected by means of a partition wall, the bridge being provided with a pressurized hole and a reduction valve Sh.

The disadvantages of this jumper are the limited scope of application in workings with variable cross-section, the inability to withstand heavy loads due to the lack of a rigid frame and means of attachment to the surface of the mine.

Also known shaft jumper consisting of mats in contact with the soil and the roof of the mine through the chambers, the working surface

which can be filled with water, air or plastic mass. The mats are interconnected by hinge brackets, forming a rigid frame. In the working state, the chambers provide a compression of the jumper to the roof and the soil, and the presence of hinged brackets facilitates its use in the development of a reservoir of variable surface G2}.

A disadvantage of the known lintel is that it can be used quite effectively only in workings with varying vertical size. When you change the size of production horizontally, there is a need for additional work on fitting the jumper.

The aim of the invention is to simplify the installation of the lintel in the workings of various cross sections.

Claims (2)

The goal is achieved by the fact that in a shaft bridge, including an expandable frame and an inflatable casing located on the periphery of the frame, the bridge frame is made of telescopically connected sections, which slide apart in two directions. In this case, the inflatable casing is made with compensatory compartments isolated from each other. FIG. 1 shows the proposed mine jumper, general view; on .fig. 2 shows a section A-A in FIG. in fig. 3 shows a section BB in FIG. The reusable jumper shaft includes a frame 1, made of tubular rods 2 and telescopic columns 3, which are connected to a single rigid structure with the help of quick connectors 7 by squares, k, tees 5, and crosses 6 made with compensatory compartments 9- isolated from each other; Frame 1 is covered with elastic casing 10 and is attached with rope braces P to the sides of the mine with anchors 12. Assembling the jumper one after the blowing way. The rods 2 of the lower half of the frame are fixed to the node parts (angles L, tees 5 and the crosspiece 6), and with the help of telescopic columns 3 they determine the required size across the width of the excavation. Then, an empty shell 8 is spread on the working soil and the lower part of the frame is installed along its axis, which is connected with cable braces 11 lowered so that the frame has a slight inclination from the vertical in order to maintain its stable position during installation. The frame is extended in such a way that the distance between it and the wall of the excavation is less than the diameter of the inflatable shell 8 in the working condition. The perimeter of the inflatable envelope is varied depending on the perimeter of the frame to be installed by squeezing one or several compensation compartments 9 when assembling the frame. When the lower part of the frame is installed and boiled on it, the assembled upper part, on which the shell 8 is covered, is placed and connected to the upper cantilever braces 11, adjusted to the vertical direction. Then, the straightenings 11 are tightened so that the frame is in a strictly vertical position. An elastic casing 10 is applied to the frame and bolted to it. The casing is preparing an e-RAM for the largest area of the frame and, when its size decreases, forms folds. After assembly and installation of the frame, air begins to be supplied in portions to the shell 8, first at the bottom, then to the top and to the side. No air is supplied to the clamped compensation compartments. At the end of the next air supply, the casing is corrected so that its longitudinal axis coincides with the longitudinal axes of the framework bars. The compressed air is supplied until a tight contact of the shell with the frame and the surface of the excavation is achieved. When filling the developed space with filling material, the load from the hydrostatic pressure is perceived by the ropes of braces and the frame with skin. The presence of quick disconnects and sliding couplings allows you to quickly disassemble the jumper, move it to a new location and communicate, compensating for changes in the size of the excavation horizontally and vertically. Claim 1. A reusable jumper including an expandable frame and an inflatable casing located around the periphery of the frame, characterized in that, in order to simplify the installation of the jumper in workings of various cross sections x 2. The mine jumper according to claim 1, is different from the fact that the inflatable casing is made with compensatory insulated compartments. Sources of information taken into account during the examination 1. USSR author's certificate No. 60598, cl. E 21 F 1 / U, 1976. 2. The patent of Germany No. 1091969, cl. 5 d15 / O, publ. 1969 (prototype). eight fug. 7 Aa fug.