SU1583609A1 - Method of constructing a junction of working with mine shaft - Google Patents

Abstract

The invention relates to the management of rock pressure in the interface of shaft workings with shafts. The goal is to increase the stability of the mate. After drilling the well, horizontal wells in the marginal rock mass around the perimeter are drilled for the entire length of the wellbore interface. In the radial direction, i.e. perpendicular to the production axis, vertical holes are drilled into the center of the interwell wells with decreasing steps to the trunk. The number of horizontal wells is determined from the ratio JO = L 2- (DT .V / 1370) / D 2, where D is the diameter of production, m, T is the protection period of production, years, V is the creep rate of the marginal rock mass, micron / day , D - borehole diameter, m. After closing the cross section, boreholes can be drilled several times before the end of the life of the mine without breaking the rigid support shell. This will ensure the preservation of the long operating mode of generation. 3 il.

Description

FIELD OF THE INVENTION The invention relates to the management of rock pressure in the interface of shaft workings with shafts

The aim of the invention is to increase the stability of the conjugation.

FIG. 1 shows the interface protected by the proposed method; in fig. 2 shows section A-A in FIG. one; in fig. 3 shows a section BB in FIG. one.

The method includes drilling out of the barrel 1 after the penetration of the interface 2 of horizontal wells 3 with a diameter of 200-400 mm in the marginal rock mass,

along the perimeter for the entire length of the interface of the pristvolnoy production.

A malleable layer of wells 3 is formed at a distance of at least 1 m from the outcrop contour, and the distance between the wells must also be at least 1 m.

In the radial direction, i.e. perpendicular to the development of the seam, vertical holes 4 are drilled into the center of the intercavitary pillars to the depth of the inelastic deformation zone (up to 3 m) with a decreasing step in the direction from the end

ate

00 NW

about about

longitudinal wells to the trunk (from 1.0 to 0.5 m).

Then, in conjunction, they erect a rigid shell made of concrete, reinforced concrete or metal lining.

In this case, the longitudinal wells are drilled in an amount determined from the ratio

Jn

D2- (J) - -E --- 1) 2

 1370 / d

where D is the diameter of production, m;

t is the period of protection of production, years; V is the creep rate of the marginal rock mass, micron / day; d - borehole diameter, m. As the cross section closes, the source boreholes 3 can be drilled several times before the end of the life of the mine without breaking the rigid shell of the lining, which will ensure the preservation of the long operating mode of development.

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1

invention formula

A method for constructing a production well with a shaft shaft, including drilling along the perimeter of the well over the entire length of the well’s horizontal well and raising, characterized in that, in order to increase the stability of the well, vertical holes are drilled in the interwell bore holes with decreasing steps to the wellbore, the number of horizontal wells is determined from the ratio

Jn

 - jgg)

d2

D - diameter of production, m;

t is the period of protection of production, years; V is the creep rate of the marginal rock mass, micron / day; d - diameter of wells, m.

Aa

& -B

& Ґj

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Claims (1)

The claims erect hard reinforced concrete longitudinal wells up to 0.5 m). Then, in conjunction with a shell of concrete, or metal lining. In this case, longitudinal wells are drilled in an amount determined from the relation where D t V D ² - (D - - ~ -) 2. ₌ _ 137СГ JO ~ ”d2’ - diameter of the mine, m; - period of protection of production, is the creep rate of the rock mass, - the diameter of the wells, m. the degree of closure of the section of years; prikonturmk / day; d Well 3 can be drilled several times before the end of the mine’s life without violating the rigid shell of the lining, which will ensure the preservation of long-term operating conditions Method for constructing a pair of mines with a mine shaft, including drilling along the perimeter of the barrel for the entire length of the pairing of horizontal wells and erecting lining, characterized in that, in order to increase the stability of the pair, vertical boreholes are drilled in the interwell pillars with a step decreasing to the shaft, the number horizontal ~ wells are determined from the relation, tV D ² - (D - - = -) 2 = _ __ ^{1370 J} od * j. D where - diameter of the mine, m; - period of protection of production, years; - creep rate of the near-rock massif, mk / day; wells