SU1214933A1 - Arrangement for supporting mine workings with yieldable supports - Google Patents

Description

I

The invention relates to the construction of mine workings predominantly in the conditions of the occurrence of increasing rock pressure without lagging behind.

The aim of the invention is to reduce the labor intensity of installing and removing the arch metal lining.

Figure 1 shows the development in the downhole part, a longitudinal section; FIG. 2 is a section A-A in FIG. 1. FIG.

A device for fixing mine workings with a compliant double-layer lining contains bottom-hole formwork 1 and support section 2 connected to each other by long-lasting drives 3. the arch-compliant lining posts 6. Pliable fins 7 are inserted into the shuttering space, for example, wood, and the downhole end of the shuttering section 1 is equipped with a baffle 8, which is also an attachment for monolithic concrete formwork 9.

The formwork section 1 is extended by means of actuators 3 to the face 10, and after its fastening with an overlap on the approach of the concrete lining 9, the support section 2 is pulled using the same actuators 3 and released, for example, by a wedge mechanism 4.

Before moving the formwork section I in the holes on the bottom, new mortgage boxes 5 A are installed in the outrun of the support floor 2, the arched J-supports with support units 11 are installed.

In the new formwork section, new pliable pads 7 are placed, after which the visor 8 is installed and the concrete is laid. With

shrinkage of lateral rocks or in conditions of damped plastic deformations, the concrete lining decreases in the perimeter due to the compression of compliant gaskets 5, while the lining does not lose

its continuity around the perimeter, despite the separation of these gaskets. In the presence of an internal metalloaric layer, the external layer of monolithic concrete, supported by concrete pumps with rock, is supported by a strong tightening with perfect packing, and it is mechanized.

The basic object of comparison with

The proposed device is a two-layer lining, the first layer of which is a malleable metal-arch lining with tightening and backing, and the second, performed lagging behind the bottom, is a concrete lining, which is molded with temporary metal lining.

The use of the invention allows e-g to completely eliminate the poorly performed process of tightening and packing, to exclude the overlap of a deformed metal lining, to eliminate the loss of this lining with maturity, and, most importantly, localize the rock pressure by providing it with high resistance to lining from the moment of exposure, walls at the k.Alsda entry when sinking, which drastically reduces the cross sections,

repairs, overcrowding and loss of special-purpose arches from intensive deormations.

fig 2

Claims (1)

DEVICE FOR MOUNTING THE MINING WORKS WITH A MAGNIFICENT FASTENERS, including sliding sectional formwork with movement mechanisms and section perimeter changing mechanisms on it, a baffle plate installed at the end of the front formwork section, ductility elements installed in the formwork area under the frame that, in order to reduce the complexity of installing and removing arched metal supports, the bottom of the formwork in the edge parts associated with the side walls of the furnace nd generation, provided with ducts for the installation metalloarochnoy po- _β; datlivoy lining. © SU, „. 1214933 Fig. ·}