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Naesliden Project: rock mechanics observations and measurements in the Naesliden mine

Abstract

Observations and measurements of the reaction of the rock mass to mining have been made in the Naesliden Mine since the very start of mining operations in 1970. This observation program originated in the need of better understanding of the rock mechanics of cut-and-fill mining. The program comprises the following types of measurement - in the backfilled excavation convergence of the sidewalls pressure in the fill - in the orebody and alteration zones above the stopes horizontal deformation of the orebody and of the adjoining alteration zones horizontal stresses changes in horizontal stresses - in the stope amount and direction of roof and sidewall displacements convergence and sidewall deformation successively in roof and floor - in the sidewall surface subsidence horizontal displacements at 260 m level. Purpose, extent, methods and results of measurements are described. Qualitative observations concerning fracture processes due to mining are reported. The results are discussed and used for estimation of in situ modulus of elasticity of the orebody as well as the ratio of the modulus of elasticity of the orebody to the modulus of the alteration zone.
Publication Date:
May 15, 1980
Product Type:
Conference
Report Number:
CONF-8006140-(Vol.2)
Reference Number:
EDB-81-013258
Resource Relation:
Conference: Conference on application of rock mechanics to cut-and-fill mining, Luleaa, Sweden, 1-3 Jun 1980; Related Information: In: Application of rock mechanics to cut-and-fill mining. Volume 2
Subject:
58 GEOSCIENCES; 42 ENGINEERING; UNDERGROUND MINING; ROCK MECHANICS; BACKFILLING; FRACTURE PROPERTIES; STRESS ANALYSIS; SWEDEN; EUROPE; MECHANICAL PROPERTIES; MECHANICS; MINING; SCANDINAVIA; WESTERN EUROPE; 580300* - Mineralogy, Petrology, & Rock Mechanics- (-1989); 422000 - Engineering- Mining & Underground Engineering- (1980-)
OSTI ID:
8489210
Research Organizations:
Boliden Mineral AB (Sweden)
Country of Origin:
Sweden
Language:
English
Submitting Site:
SWED
Size:
Pages: 232-256
Announcement Date:
Mar 15, 2013

Citation Formats

Nilsson, G., and Krauland, N. Naesliden Project: rock mechanics observations and measurements in the Naesliden mine. Sweden: N. p., 1980. Web.
Nilsson, G., & Krauland, N. Naesliden Project: rock mechanics observations and measurements in the Naesliden mine. Sweden.
Nilsson, G., and Krauland, N. 1980. "Naesliden Project: rock mechanics observations and measurements in the Naesliden mine." Sweden.
@misc{etde_8489210,
title = {Naesliden Project: rock mechanics observations and measurements in the Naesliden mine}
author = {Nilsson, G., and Krauland, N.}
abstractNote = {Observations and measurements of the reaction of the rock mass to mining have been made in the Naesliden Mine since the very start of mining operations in 1970. This observation program originated in the need of better understanding of the rock mechanics of cut-and-fill mining. The program comprises the following types of measurement - in the backfilled excavation convergence of the sidewalls pressure in the fill - in the orebody and alteration zones above the stopes horizontal deformation of the orebody and of the adjoining alteration zones horizontal stresses changes in horizontal stresses - in the stope amount and direction of roof and sidewall displacements convergence and sidewall deformation successively in roof and floor - in the sidewall surface subsidence horizontal displacements at 260 m level. Purpose, extent, methods and results of measurements are described. Qualitative observations concerning fracture processes due to mining are reported. The results are discussed and used for estimation of in situ modulus of elasticity of the orebody as well as the ratio of the modulus of elasticity of the orebody to the modulus of the alteration zone.}
place = {Sweden}
year = {1980}
month = {May}
}