SWS Academic Research eLibraryEarth & Planetary Sciences

Scholarly record

QUESTION OF THE STABILITY OF THE ROOF OF STOPE ORES IN THE CONDITIONS OF CRYOLITHOZONE

Lyubov Petrova

First published: 2019-06-20https://doi.org/10.5593/sgem2019/1.3/s03.065View metrics

Abstract

In the development of mineral deposits by the underground method, geomechanical processes are manifested, which significantly affect the quality of ore, the cost of production and the safety of mining operations. Insufficiently valid choice of geomechanical steady spans of outcrops can lead to a sudden collapse and formation in clearing workings, thereby reducing the safety of mining. The work provides a definition of sustainable roof exposures of the clearing workings according to the method of S.V. Vetrov for fractured rocks in the conditions of the III ore pillar of the Badran deposit in the Oymyakonsky district of the Sakha Republic (Yakutia). First of all, the strength and elastic properties of rocks and ores of the III ore column of the deposit on the horizon +490 were analyzed, then a steady outcrop was calculated using the condition of eliminating the formation of a false roof, first, for the ore deposit represented by milonites with quartz, quartz and secondly, for the ore deposit represented by milonites, aleurolites milonitized. In the end, the dependences of the allowable spans of the roof exposures of the sewage chambers on the thickness of the direct roof for siltstones, silt sands and milonitized rocks in the fracture blocks were obtained. Fracture blocks are considered in three categories: strongly fractured, medium fractured and weakly fractured rocks. The results are presented in the form of recommendations for fixing clearing workings. It was revealed that the ore bodies and the enclosing crushing zones of the III ore pillar of the Badran deposit belong to the poorly resistant ones; therefore, it is necessary to provide for temporary safety support when conducting cleaning works.

Publication Impact Profile

PlumX
  • Captures
  • Mendeley - Readers: 1
PLUMX see details

Publication details

Title
QUESTION OF THE STABILITY OF THE ROOF OF STOPE ORES IN THE CONDITIONS OF CRYOLITHOZONE
Authors
Lyubov Petrova
Proceedings
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 19th SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings19th, Science and Technologies in Geology, Exploration And Mining
Publisher
STEF92 Technology
Year
2019
Pages
507-512
SWS Citekey
Petrova20193507512
ISSN
1314-2704
ISBN
978-619-7408-78-2
Language
en
Publication type
Conference Paper
Keywords
stable outcrop sizesVetrov methodhorizontal spansformula for calculating spans of outcropsfracturing of a block of rocks.
References0
0references registered for this publication

Structured references will appear here after the reference import pass. The count is preserved now so the scholarly record is not incomplete.

View or Download full articleAccess options
Full paper accessChoose SWS login, librarian support, or instant article download.

SWS access login

Login as SWS Scientific Committee

Authors and approved SWS contributors will read and export their own linked papers after identity matching by SWS profile, email and SGEM GlobalID.

For librarian assistance: [email protected]

Purchase Instant Access

48-hour online accessComing soon
Online-only accessComing soon
Download the full article in PDF formatEUR 35
  • Article can be downloaded after successful payment.
  • Article may be used according to SWS library access terms.
  • Article cannot be redistributed.
Get full paper

Back to publication list