SU757715A1 - Method of trapping water from vertical shaft walls during concrete lining of roof support and apparatus for realizing same - Google Patents

Description

The invention relates to the coal and mining industry and can be used to trap water from the walls of vertical shafts when concreting lining.

When concreting lining great difficulty causes water to enter the formwork, post- ⁵

aquifer from aquifers. Used known devices for concreting lining do not provide for the use of methods of trapping water from the walls of the trunk [1].

There is a method of trapping water, including collecting water around the perimeter of the barrel and its discharge into the bottom, and a device for implementing this method, including a water collecting ring and pipes for draining water [2].

The known method and device do not fully capture water from the walls of the trunk, and most of it falls behind the formwork, stratifying the concrete mixture, which will greet to the 'premature destruction of concrete lining.

The purpose of the invention is the prevention / erosion of the concrete mix when laying it in the formwork.

2

This is achieved by the fact that water is diverted from the walls of the barrel by a stream of compressed air.

• In the device for carrying out this method of trapping water, the water collecting ring is provided with tubes with openings for supplying compressed air located along its perimeter.

FIG. 1 is a schematic diagram of a method for trapping water; na ^- FIG. 2 - water trapping device, iid above; in fig. 3 - perforated tube; in fig. 4 - a section along the water collecting ring.

A device for implementing the method consists of a formwork 1 with a frame 2 in the upper part, to which a water collecting ring 3, made in the form of a groove, is attached at an angle of 45 °. On the ring 3 are mounted by means of strips 4 perforated tubes 5 with holes located along the perimeter of the ring 3. Perforated tubes 5 are connected to vertical risers 6, to the bottom

3

757715

four

which are connected to the hoses 7 for compressed air.

The capture of water by the method according to the invention can be carried out both along the perimeter of the trunk and at its sites. This is achieved by stopping the supply of compressed air to the corresponding perforated tubes 5.

The complete prevention of the ingress of water into the concrete mixture makes it possible to obtain the best quality lining.

The use of the invention provides the longevity of the lining, and, consequently, reduces the cost of maintaining (repair) lining during the operation of the trunk.

Claims (2)

Claim 1. The method of trapping water from the walls of vertical trunks when concreting lining, including collecting water from the perimeter of the trunk and its withdrawal to the bottom, characterized in that, in order to prevent the concrete from being washed out, 5 water from the walls of the barrel with a stream of compressed air. 2. A device for implementing the method by. π. 1, including a water collection ring and pipes for water drainage, characterized in that the water collection ring ^{10 is} equipped with tubes with openings for supplying compressed air located along its perimeter.