SU1232802A1 - Floor of dump drift - Google Patents

Description

The invention relates to highland production and can be used when dumping overburden heaps.

The purpose of the invention is to increase the safety of dump works by allowing the control of the process of rock movement in the dump entry.

FIG. Figures 1-4 show the design of the approach and the sequence of its use in dumping with the movement of rocks into the excavated space.

The base I of the dump gateway 2 of the blade 3 consists of erect open-sided openings, such as triangular trenches, near 4 and far 5 in relation to the backfill front, with sides located on both sides of the split open-end pillar 6, in which openings 7 are made to communicate trench spaces among themselves.

The base of the mold entry is used as follows.

An excavator, for example OSHR-5000/95, dumping rocks into waste dump 2 with a discharge radius R, is located along the axis of motion with the ability to unload rocks to point 11. At the same time, the limit of the displacement sphere of rocks when they are unloaded is due to the height of cone of rocks 9 and the angle of repose of rocks AG. ,

On the basis of 1 dump entry, 2. a pillar 6 is made between two paired trays, one of which 5 is performed outside the sphere of

the rocks at their unloading, and the side of the second trench 4 from the side of the blade 3 is angled

oi (5 ° - |)

od angle - angle of repose

rocks, hail .;

p - angle of internal friction of rocks, hail.

Following the advancement of the spreader, pillar 6 between the paired trenches 4 and 5 are destroyed, for example, with explosives, after having drilled wells, for example, with machine tools of the type. After the destruction of the pillar 6, the rocks poured into the stowage collapse and occupy the position along the contour 10. In order to ensure that the rocks begin to move at the moment of the destruction of the pillar, pre-loosen the bonds between the dump rock particles and the ocHOBaf eM dump entry. This is done by connecting trenches 4 and 5 with each other by mines 7, then water is supplied to trench 5 and the waste dumps fill it with rocks.

The depth of trench 4 (or the required height of the rear sight) is determined from the expression

2 uV-jr -sine - f. c

where AV is the additional volume of rocks; - bulk weight dump

rocks; C - coefficient of adhesion of rocks

dump

The parameters of the trench 5 are selected according to the condition of passing water through the openings 7 for soaking the dump and bottom rocks.

// /// ////////// // //

Fi (g

Editor A. Kozoriz

Compiled by L. Zavov

Tehred M. Khodanich Proofreader M. Demchik

Order 2748/33 Circulation 470 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

FIG.

Claims (1)

THE BASIS OF THE DUMP APPOINT, containing the paired open workings of a triangular shape made at the base of the dump along the front of the dump of the dump comet, the nearest and the far with respect to the front of the dump, with sides located on both sides of the separating twin open workings of the pillar, distinguishing-. with the fact that, in order to improve the safety of dumping operations by providing the ability to control the process of shifting the rocks in the dumping hole, paired open mines are made communicating with each other using mines drilled in the rear, and the rear sump is made with the possibility of its destruction, the distant open mine is located behind outside the scope of the displacement of the rocks during their unloading into the entry, and the side of the near open excavation from the side of the dump is made at an angle E of the shift of the rocks of the dump entry, equal to £ = ot- (45 ° - £), g de οό - angle of repose of rocks, hail; p is the angle of internal friction of the rocks, deg. Figure 1