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2 610 456

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(51)

IPC

E21C41/16(2006-01-01)

(21) (22)

Application

2015140909, 2015-09-25

(24)

Start date

2015-09-25

(22)

Actual filing date

2015-09-25

(45)

Published

2017-02-13

(72)

Inventor

Trubetskoj Kliment NikolaevichZakharov Valerij NikolaevichIofis Moisej AbramovichEsina Ekaterina NikolaevnaPostavnin Boris NikolaevichGrishin Aleksandr Viktorovich

(73)

Holder

Federalnoe Gosudarstvennoe Byudzhetnoe Uchrezhdenie Nauki Institut Problem Kompleksnogo Osvoeniya Nedr Rossijskoj Akademii Nauk Ran)

METHOD OF EXTRACTION OF MINERALS OF PILLARS Russian patent published in 2017 - IPC E21C41/16

Abstract RU 2610456 C1

FIELD: mining.

SUBSTANCE: invention relates to mining and can be used in mining of pillars, left during mining operations by underground method. Method of development includes working out of left pillars with development threaded openings, breaking and discharge of broken ore to bottom level. Opening of left pillars is performed from openings, made in roof. In pillars in descending order cylindrical chambers are made, wherein parameters of cylindrical chambers are determined considering acting stresses in vertical direction and coefficient of non-uniformity of distribution of stresses near mine k_h, in zone of increased overburden pressure k_n = 2, in zone of unloading k_h = 0.5. Breaking and discharge of broken ore are performed at bottom level with possibility of filling of mined space.

EFFECT: invention provides higher efficiency of ore extraction from abandoned pillars.

1 cl, 4 dwg

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RU 2 610 456 C1

Authors

Trubetskoj Kliment Nikolaevich

Zakharov Valerij Nikolaevich

Iofis Moisej Abramovich

Esina Ekaterina Nikolaevna

Postavnin Boris Nikolaevich

Grishin Aleksandr Viktorovich

Dates

2017-02-13—Published

2015-09-25—Filed