US3417568A

US3417568A - Mine shaft bratticing

Info

Publication number: US3417568A
Application number: US587328A
Authority: US
Inventors: Henderson Herbert Victor
Original assignee: Wright Anderson (South Africa) Ltd
Current assignee: Wright Anderson (South Africa) Ltd
Priority date: 1965-10-21
Filing date: 1966-10-17
Publication date: 1968-12-24
Anticipated expiration: 1985-12-24

Description

1968 H. v. HENDERSON 3,1?,568

MINE SHAFT BRATTICING Filed Oct. 17. 1966 United States Patent 3,417,568 MINE SHAFT BRA'ITICING Herbert Victor Henderson, Dawnview, Germiston, Transvaal, Republic of South Africa, assignor to Wright Anderson (South Africa) Limited, Klipfonteiu, Boksburg North, Transvaal, Republic of South Africa Filed Oct. 17, 1966, Ser. No. 587,328

Claims priority, application Republic of South Africa,

Oct. 21, 1965, 65/ 4,746

2 Claims. (Cl. 61-40) ABSTRACT OF THE DISCLOSURE A vertical concrete lined mine shaft has vertically spaced horizontally disposed buntons therein carrying vertically extending corrugated steel panels which divide the shaft into updraft and downdraft compartments. The buntons have their ends embedded in the concrete walls. Anchor plates also embedded in the walls are secured to the sides of the panels.

This invention relates to bratticing and more particularly to brattice walling used in shafts of underground mines.

Brattice walling in the shafts of mines to divide the shaft into various compartments for different uses has been utilised for many years. In general this walling has been erected in reinforced concrete which is a lengthy process resulting in a massive structure.

It is the object of the pesent invention to provide brattice Walling which while effectively withstanding the loading applied thereto will be a much lighter structure and one which is more readily erected.

According to this invention there is provided mine shaft brattice walling comprising steel panels with corrugations formed therein in the vertical direction and with the panels secured to buntons located to span the shaft.

Further features of this invention provide for the panels to be treated with corrosion resistant material where neces-' sary, for the panels to be made in sections with overlapping vertical edges and for the end edges of the panels to be secured to anchor plates fastened to the perimeter walling for the shaft.

Summary of the invention In summary, the invention relates to the use of buntons, corrugated panels, anchor plates and corrugated strips in the forming of brattice Walling in mine shafts to divide the shaft into compartments for different uses such as updraft and downdraft ventilation.

A preferred form of this invention will be described as applied to the bratticing of a circular concrete lined shaft with reference to the accompanying diagrammatic drawings in which:

FIG. 1 is a plan of the shaft showing the general layout;

FIGS. 2 and 3 show elevations of the bratticing in different arrangements to the buntons; and

FIGS. 4, 5 and 6 are details to more fully explain the invention.

In this embodiment a diametrical brattice wall 1 in a say, thirty foot diameter circular shaft, is shown.

In such an application horizontal steel buntons 2 preferably of streamlined shape are positioned across the shaft with their ends 3 embedded in the concrete peripheral walling 4. This will enable plates of about 7'6" by 6'0" to be manufactured and subsequently welded in pairs to 3,417,568 Patented Dec. 24, 1968 form panels 5 of a size by 6'0" with corrugations 6 along the length thereof with a pitch of 6" across the width. The plate used may be from A1" to thick depending on particular requirements. The figures are given as a practical example only and are in no Way limitative to the scope of the invention.

End anchor plates 7 to Which the panels may be bolted will be embedded in or bolted to the concrete Walling 4 between buntons 2 and the joints 8 will preferably be provided with a rubber or other resilient lining 9. This lining 9 will also be included between the overlapped horizontal and vertical edges of adjacent panels to enable the bratticing to extend right across the shaft. The upper and lower ends of the panels will be suitably secured to the buntons 2.

It Will be noted that the corrugations 6 in the panels have a stiffening effect enabling buntons 2 of lighter than normal structure to be used. Also, and particularly Where the brattice Walling is used to determine the ventilation updraft and downdraft compartments for the shaft, the surface of the panels will be shot blasted and covered with protective paint or other rotective coating such as a complete rubber coating.

The advantages of brattice Walling according to this invention are firstly with respect to weight and consequent handling problems. In the above example walling for a shaft 6000 feet deep using A1" plate will weigh about 650 tons compared with the weight of about 5600 tons for bratticing in the form of normal concrete Walling. The concrete bratticing will take up to twelve months to complete under normal operational techniques and steel bratticing would take a very considerably lesser period of time for installation.

Where the shaft is divided as referred to above for ventilation purposes initially and it is subsequently decided to equip the up-cast or updraft compartment 10 for hoisting the steel bratticing is recoverable for alternative use or reuse elsewhere. This is not the case where concrete bratticing is used.

As can be seen from FIGS. 2 and 3 the bratticing can be made either against the buntons 2 (FIGS. 2, 4 and 6) or in line with the buntons 2 (FIGS. 3 and 5). The latter arrangement giving a slightly larger upcast area than Would be the case with a continuous bratticing running down the faces of the buntons 2.

Mating mounting strips 11 are secured either to the sides of the buntons 2 or, in the the case of in line bratticing, they are fixed one to the top and one to the bottom of each bunton 2. The strips 11 have slightly different formations so that the resilient linings 9 can be properly accommodated without undue stresses being imparted during erection of the bratticing.

T-he FIGS. 4 and 6 also show different profiles to the corrugations. The serrated type 12 is frequently advantageous in that it is easier to manufacture and it will be understood that the depth of the corrugations 6 will be to a large extent determined by the pressures to be Withstood by the bratticing.

Additional stability is also imparted to the bunton 2 due to the dividers 13 in the downcast or downdraft coinpartment 14. These dividers 13 will be formed in the same manner as buntons 2 and would be required to be securely fixed to both the bunton 2 and the shaft side wall 4.

Side fixing plates 7 are bolted to the buntons 2 prior to grouting of buntons 2 in shaft wall chase. The fixing plates 7 would then serve both to ensure an adequate seal through any discrepancies in the concrete lining and they would be in lengths suitable to assist in gauging the bunton centres.

What I claim as new and desire to secure by Letters Patent is:

1. In a vertical mine shaft, brattice walling comprising vertically extending steel panels dividing said shaft into plural channel compartments, said panels having corrugations extending in a vertical direction, vertically spaced horizontally disposed buntons having their ends secured to the walls of and spanning said shaft, corrugated strips carried by said buntons, said panels having their upper and lower ends secured to and mating with said strips on said buntons, anchor plates secured to the shaft wall adjacent the ends of said buntons and the sides of said steel panels adjacent said anchor plates being secured thereto.

2. Mine shaft brattice walling as claimed in claim 1 in which resilient sealing linings are employed between overlapping joints of the steel panels and between the strip and the ends of the steel plates.

References Cited UNITED STATES PATENTS 1,792,084 2/1931 Glasser 6145 2,149,345 3/1939 Hansaker 6145 2,412,778 12/1946 Kosek 52483 2,610,470 9/1952 White 6145 2,923,386 2/1960 Harry 52537 3,113,434 12/1963 Phillips 52495 FOREIGN PATENTS 10,638 7/ 1956 Germany. 943,463 5/1956 Germany.

HENRY C. SUTHERLAND, Primary Examiner.

US. Cl. X.R.