SU1208259A1 - Method of driving workings - Google Patents

Description

2, the method according to claim 1, 1 and 2, and with the fact that for the delivery of the concrete mix, when fixing the underlying concrete production, use anchor pipes as concrete pipes.

3, a method according to claim 1, characterized in that the work on drilling wells and installing anchors therein is carried out ahead of the downhole production, the step of which is determined from the expression

, f OBH. , step with. P

and llgyp

where hiuar is a step ahead of work on drilling.

The invention relates to the mining industry, in particular to methods for excavating workings, and can be used in the development of fractured unstable ores.

The aim of the invention is to increase the speed of the underlying generation in parallel to the previously completed generation of another underlying process.

FIG. 1 shows the development of the cutting horizon and, the contour of the future underlying development of the delivery horizon, a cross-section in FIG. 2 - section A-A in FIG. one,

Technique of the method of excavation is as follows.

From the development of the subsurface horizon 1 of the drill of the row of downstream squalax 2 to the project soil contour 3 of the future production (delivery horizon 4), then they install tr) anvils 5, the lower ends of which are placed at the level of the upper project delivery contour 4. As anchors 5, for example, welded steel pipes with an internal diameter of 40 mm and wall thickness of 4 mm are used. The pipes in the wells are cemented. Through the installed tubular anchors, the charges are charged with the primed substance, and then the blasting of the loose end parts 6 of the wells 2 located within

oesch

Muuj

S BUR. wells and installing anchors in them, m; total well length, m;

productivity of machine cleaning of rotary mass and fastening of production, m per shift; cross-sectional area of excavation in the penetration, m; productivity of drilling and installation of tubular anchors in them, m per shift.

h step where lshp

 one

Sections of the delivery contour of the delivery area Div at the sites of the projected workings 7 for the production of ore. Then, drilling of wells 2 from generation 1 and cleaning of broken rock mass 8 in the bottomhole of excavation 4 are carried out simultaneously, and drilling of wells 2 and installation of tubular anchors 5 are required to drill the well, which is determined from the expression

- ERC. 8-G1v, p

- step ahead of the production of drilling wells and installing anchors in them j m; GEN - total length of wells,

m;

U, is the productivity of machine cleaning of the rock mass and fastening of the production j m in a shift;

S is the cross-sectional area of excavation in the penetration,

one

P

var

productivity of drilling and installation of tubular anchors in them, m per shift. After cleaning the broken rock mass 8, at the ends of tubular anchors 5 in excavation 4, metal mesh 9 with cell size 10x is hung

3 1208259

xlO cm, then set the formwork - serves a flowing concrete mix behind a (not shown) and tubular | the formwork for the construction of concrete anchors 5, as in the Kpenii 10 concrete line, after which the raven is passed through the expression of 1 horizon of sweeping of the 7 ore tapping with the help of the paver g.

Aa

3 07

Claims (3)

1. METHOD OF DRILLING PRODUCTION, including drilling rows of downhole wells from previously completed production to the contour of the future underlying production, installing anchors in them to strengthen the roof rocks of this production and its subsequent conduct, blasting and cleaning of the rock mass and erection of roof supports, characterized in that, in order to increase the speed of carrying out the underlying production, when drilling downstream wells, they are buried to the design soil contour of the future development, and pipes, the lower ends of which are used as anchors they are installed at the level of the upper contour of the future production, while the loose end parts of the wells are charged with explosive charges and blown up to break off the rock mass within the design circuit in the bottom of the underlying production. SU. „> 1208259 2 .. The method according to p. ^ Characterized in that for supplying the concrete mixture when fixing the underlying workings with concrete, anchor pipes are used as concrete pipelines. 3. The method according to p. 1, characterized in that the work on drilling wells and installing anchors in them 'is performed ahead of the bottom of the underlying production, the step of which is determined from the expression. _ £ OBShL ^ matz And step c. p 'y 11 _6U p where bshag is the step ahead of the production of work on drilling wells and installing anchors in them, m; ? _ego - the total length of the wells, m; '' Pnish - productivity of machine harvesting of the usable mass and fastening of the mine, m ³ per shift; S is the cross-sectional area of the excavation in the sinking, m ² ; Pbur. productivity of drilling and installing tubular anchors in them, m per shift.