SU1551805A1 - Method of extracting minerals under the guard installations in effect zone of steep tectonic disturbances - Google Patents

Abstract

The invention relates to the mining industry, is intended for underground mining of reservoir mineral deposits (PI), allows to reduce losses of PI in the pillars and to increase the effectiveness of measures to protect objects in the areas of disjunctive violations (DN). To do this, cleaning work is carried out simultaneously in the lying and hanging than the sides (WB) of the mixer DN. Working out lead lavas simultaneously on both sides of the NAM. The dimensions of the lavas are determined from the condition: D _l / D _in = [CTGψ ₂ + CTG (Δ-Α)]: [CTGψ ₁ -CTG (Δ-Α)] ^. (M _in / M _l ) ² (H _l / H _in ), where α, Δ - angles of incidence, respectively, of the layers and the mixer DN

ψ ₁ , ψ ₂ - the angles of complete displacement

D _l , D _in - the size of the workings in the section across the strike of the reservoir, respectively, from the side of the side and the WB

M _l , M _x - removable power, respectively, in the layers of the lying side and WB

H _L, H _in - the distance from the earth surface to the points along Nam undercutting disorders layers respectively by the footwall and WB. To eliminate the possibility of the formation of terraces of the earth's surface in the zone of disturbed rocks in the recumbent side and the WB is formed at a distance of D _l = D _c ^. D _l / D _in from the plane of the mixer, pillars PI, where D _l , D _in - distances along the seam PI from internal to the violation of the laval boundaries to the plane of the DN mixer. 1 il.

Description

The invention relates to the mining industry, mainly to the coal industry, and can be used in the mining of mineral deposits in the lying and lower sides than in relation to the steepness disturbance mixer.

The aim of the invention is to reduce mineral losses and increase the efficiency of protecting objects by reducing the deformations of the earth's surface in the areas of disjunctive disturbances.

The drawing shows a diagram of the method of mining operations in the zone of influence on the output of the disturbance displacer.

The drawing shows the object undermining 1, splicing device 2 disturbances, cleaning lavas 3 of the first stage, being processed simultaneously, cleaning lavas A of the second stage, working at the same time.

The method is carried out as follows.

Purification works on the mineral reservoir are carried out simultaneously in the lying and hanging sideways in relation to the steeply dipping inflator. At the same time, the dimensions of lavas in recumbent 1) d and vis than D & the sides are determined from the condition

Nl

l5 .Ј1Јg29 DB ctgif -ctgll1) H6

thirty

D ,, D

s

de oi and L are the angles of incidence, respectively, of the formations of the suite and the displacement dislocator; f () Srg- angles of complete displacement, determined according to the rules for the protection of structures;

- dimensions of the workings in the section across the strike of the formation, respectively, from the side of the lying and hanging sides;

- distance along the violation from the surface to the points of intersection of the violation by layers, respectively, from the side of the lying and hanging sides; removable power, respectively, in the layers of the bed- 15 years and the sides.

Na nv

m

A &

ma To eliminate the possibility of the formation of terraces of the earth's surface in the area of the tectonic disruption of the formations from the side of which, and the lying sides of the plane of disturbance, the pillars of the mineral are formed. The boundaries of the pillars on the cut across the strike are determined from 55 conditions

.D, / D

B

Q

r

0

five

0

35

40 15

where d ,, d & is the separation distance

from internal to the violation of the boundaries of workings to the plane of the mixer of violation.

The invention makes it possible to reduce the deformations of the earth's surface and leads to an increase in depreciated mineral reserves.

Claims (1)

Invention Formula The method of extracting mineral reserves under protected objects in zones of influence of steeply dipping tectonic disturbances, including cleaning the work of the lavas on the reservoir from the pillars boundaries formed in the zone of disturbed rocks in the lying and hanging side of the disturbance displacement plane, characterized in that in order to reduce the loss of minerals and increase the effectiveness of measures to protect objects by reducing the deformation of the earth's surface in the areas of disturbance outlets, the cleaning work on the reservoir is carried out simultaneously and laterally recumbent fault planes, wherein the dimensions in the footwall of lava and h vis side than tectonic disorders is determined from the condition 2A ctg feictg (A-efl ( Do rf-pf. -ct-oTX-ei) Sri. I 0 55 5 ctgvT-ctgt oiT Snj Nd where Dft. and De are the dimensions of the lavas in the section across the strike of the reservoir, respectively, from the side of the lying and hanging sides of the tectonic disturbance;  ANGLES of complete displacements of earned rocks; oi and & - angles of incidence, respectively, of the seam and displacement of tectonic disturbance; m l and ha 6 - removable power respectively, in seams lying down and hanging on the sides of a tectonic disturbance; Nl and Iv are distances from the earth's surface along the tectonic disruption to the points of dissection by its layers, respectively, from the side of the lying and hanging sides, and the distance from the mixing plane to the boundary of the pillars in the zone of disturbed rocks in the lying and hanging sides of a tectonic arushenna are determined from the condition dA e D «/ De where d, - distances from the internal to the violation of the laval boundaries to the plane of the displacement dislocator.