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(11)    Patent No :    AP 2504   
(21)    Application No :    AP/P/2006/003494   
(22)    Filing Date :    18.06.2004   
(24)    Date of Grant &    12.11.2012   
           
(45)    Publication :

(30)  Priority Data       
(33) Country    (31) Number    (32) Date
DE    10328287.4    23.06.2003
DE    103 53 352.4    14.11.2003


(84)    Designated State

ZM

(73) Applicant(s)

CORPORACION NACIONAL DEL COBRE DE CHILE

(CODELCO), Huérfanos 1270, Santiago,
Chile

CATERPILLAR GLOBAL MINING EUROPE GmbH,
Industriestrasse 1, 44534 Lünen,

Germany

(72) Inventors

BRÜGGEMANN Reinhold, Germany

BÜHLMANN Fernando Arturo Geister, Chile

DELGADO Juan, United States of America

et al

(74) Representative

GALLOWAY & COMPANY

ZIMBABWE
 

(51)  International  Classification   E21C 35/20 (2006.01)    E21D 9/12 (2006.01)
E21F 13/00 (2006.01)   


(54)    Title

Method and device for extracting extraction products in underground mining

(57)    Abstract

In the method according to the invention and the arrangement or according to the invention for extracting extraction products in underground mining operations using the caving method, the extraction products (20) collapsing in

an upper gate area (10) are extracted via at least one extraction funnel (13) or the like into an extraction path (14) driven below the gate and are transported away therein by means of an extraction conveyor (15). According to the invention the extraction funnels (13) are arranged laterally beside the extraction conveyor (15) and lead at their lower end into a ramp surface (17) inclined towards the extraction conveyor, the extraction products extracted from the gate through the extraction funnels being transported slidingly over the inclined ramp surface to the extraction conveyor. The inclined ramp surface is preferably formed by a loading ramp (22) which is so arranged in an extraction chamber (16) branching off laterally from the extraction path that its one end (19), disposed higher, is located below the extraction funnel and its other end (23), disposed lower, forms an outlet (21) towards the

(56)    Documents Cited :    US-2298599 A    DE-871359 C    DE-1086524 B

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