Oct 21, 2025

US12448889 - Raise caving method for mining deposits, and a mining infrastructure, monitoring system, machinery, control system and data medium therefor

The present invention relates to an integrated raise caving mining method for mining deposits in rock mass comprising: developing at least one raise ( 102,102 a - f, 202,302 a - g, 402 a - e ) in the rock mass ( 10 ), developing a drawbell ( 100,100 a - c, 200 a - g, 300 a - f, 400 a - e ) in the rock mass ( 10 ), wherein at least a portion of the drawbell is excavated from the at least one raise ( 102,102 a - f, 202,302 a - g, 402 a - e ), initiating caving through undercutting, wherein at least a part of an undercut is created by gradually expanding the drawbell ( 100,100 a - c, 200 a - g, 300 a - f, 400 a - e ) in upwards direction by excavation, developing at least two drawpoints ( 106,206,406 ) into the drawbell ( 100,100 a - c, 200 a - g, 300 a - f, 400 a - e ), wherein the drawpoints ( 106 ) are developed from drifts ( 115,207,407 ) arranged on different levels and progressively drawing fragmented rock ( 101 ) from the at least one drawbell through the drawpoints ( 106,206,406 ). The present invention also relates to use of an integrated raise caving mining method for mining deposits. The present invention also relates to an integrated raise caving mining infrastructure, a machinery, a control system of an integrated raise caving mining infrastructure, and a data medium.

Assignee: LUOSSAVAARA-KIIRUNAVAARA AB
Inventors: Horst Wagner, Tobias Ladinig, Matthias Wimmer
Filing date: 2021-05-20

miningmethodinfrastructure

This patent describes an integrated raise caving mining method that involves developing raises and drawbells in rock mass to facilitate the extraction of fragmented rock. It also encompasses a mining infrastructure, machinery, control systems, and data mediums associated with this mining method.

Claim 1

An integrated raise caving mining method for mining deposits in rock mass comprising: developing at least one raise in the rock mass, developing a drawbell in the rock mass, wherein at least a portion of the drawbell is excavated from the at least one raise, initiating caving through undercutting, wherein at least a part of an undercut is created by gradually expanding the drawbell in upwards direction by excavation, developing at least two drawpoints into the drawbell, wherein the drawpoints are arranged on different levels, and progressively drawing fragmented rock from the at least one drawbell through the drawpoints. developing at least one raise in the rock mass, developing a drawbell in the rock mass, wherein at least a portion of the drawbell is excavated from the at least one raise, initiating caving through undercutting, wherein at least a part of an undercut is created by gradually expanding the drawbell in upwards direction by excavation, developing at least two drawpoints into the drawbell, wherein the drawpoints are arranged on different levels, and progressively drawing fragmented rock from the at least one drawbell through the drawpoints.

Google Patents

https://patents.google.com/patent/US12448889

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12448889