SU1460262A1

SU1460262A1 - Method of erecting an artificial pillar in mining a mineral bed

Info

Publication number: SU1460262A1
Application number: SU864103765A
Authority: SU
Inventors: Александр Филиппович Ревуженко; Станислав Борисович Стажевский; Анатолий Маркович Фрейдин; Владимир Алесандрович Усков
Original assignee: Институт Горного Дела Со Ан Ссср
Priority date: 1986-08-07
Filing date: 1986-08-07
Publication date: 1989-02-23

Abstract

Изобретение относитс к горной промети . Цель изобретени - повышение податливости искусственного целика (Ц) при снижении потерь Тюлезного ископаемого. В выработанном пространстве 1 формируют Ц 4 полезного ископаемого сечением, обеспечивающим его временную устойчивость. На рассто нии А от Ц 4, определ емом по формуле Д ар|-/ /a -fe-г, где стр - предел прочности на раст .жение эластичной оболочки; / - толщина эластичной оболочки; стг - предел прочности на сжатие сыпучего материала (СМ); t, - коэф. бокового распора дл СМ; г - средний радиус Ц 4, устанавливают замкнутую эластичную оболочку 2. Пространство между эластичной оболочкой 2 и Ц 4 заполн ют СМ 3 и дл повы- щени несущей способности искусственного Ц дополнительно устанавливают армирующие элементы 8. 1 з. п. ф-лы, 2 ил.This invention relates to mining promet. The purpose of the invention is to increase the compliance of the artificial pillar (C) while reducing the loss of the Tyulese mineral. In the worked-out space 1, C 4 is formed of a mineral with a section that ensures its temporary stability. At a distance A from C 4, defined by the formula D ar | - / / a -fe-g, where p is the tensile strength of the elastic shell; / is the thickness of the elastic shell; Stg - ultimate compressive strength of the bulk material (CM); t, - coefficient lateral thrust for CM; g - the average radius C 4, establish a closed elastic sheath 2. The space between the elastic sheath 2 and C 4 is filled with CM 3 and to increase the bearing capacity of the artificial C, reinforcement elements 8 are additionally installed. 1 h. item f-ly, 2 ill.

Description

{Pue.2{Pue.2

Claims

Claim

1. The method of erecting an artificial pillar during the development of a mineral layer, including forming a mined pillar of minerals in a mined space, installing a closed elastic shell around it, characterized in that, in order to increase the flexibility of the artificial pillar while reducing mineral losses, the entire pillar of the mineral is formed by a section corresponding to its temporary stability, and a closed elastic shell is installed from the surface of the specified pillar at a distance equal to where [σ _ρ ) is the tensile strength of the elastic shell, t / m ² ;

t is the thickness of the elastic shell, m; sd is the compressive strength of bulk material, t / m ² ;

ξ is the lateral expansion coefficient for bulk material;

g - the average radius of the formed - the pillar of the mineral, m, after which the space between the whole mineral and the elastic shell is filled with bulk material.

2. The method according to π. 1, characterized in that, in order to increase the bearing capacity of the artificial pillar, reinforcing elements are additionally introduced into the space between the whole mineral and the elastic shell.