TY - CHAP
T1 - Immediate roof stability analysis for new room-and-pillar mining technology in "Estonia" mine
AU - Nikitin, Oleg
AU - Sabanov, Sergei
PY - 2005/1/1
Y1 - 2005/1/1
N2 - This paper analysis the immediate roof (IR) stability by the deformation criteria for new room-and-pillar mining technology with modern machines in "Estonia" mine. The new mining technology based on a blasting method to move from packaged to emulsion explosives, from 2.0 m to 4.0 m boreholes (FRANZ SCHELL machine) and on new undercutting (SMAG machine) method. With such equipped new technology the entry advance rates reached 3.8 m. As a result of such greater advance rates the situations with unsupported room length up to 5.5 m with decreasing the stability of IR can be expected. The analysis of IR stability based on an in-site underground testing by the leaving bench-mark stations and convergence measurements. The main targets of this study to determine the main parameters for supported/unsupported IR deformation in areas with great entry advance rates and risk analysis concept elaboration.
AB - This paper analysis the immediate roof (IR) stability by the deformation criteria for new room-and-pillar mining technology with modern machines in "Estonia" mine. The new mining technology based on a blasting method to move from packaged to emulsion explosives, from 2.0 m to 4.0 m boreholes (FRANZ SCHELL machine) and on new undercutting (SMAG machine) method. With such equipped new technology the entry advance rates reached 3.8 m. As a result of such greater advance rates the situations with unsupported room length up to 5.5 m with decreasing the stability of IR can be expected. The analysis of IR stability based on an in-site underground testing by the leaving bench-mark stations and convergence measurements. The main targets of this study to determine the main parameters for supported/unsupported IR deformation in areas with great entry advance rates and risk analysis concept elaboration.
KW - Deformation criteria
KW - Immediate roof
KW - Risk analysis
KW - Room-and-pillar mining
KW - Stability
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U2 - 10.17770/etr2005vol1.2138
DO - 10.17770/etr2005vol1.2138
M3 - Chapter (peer-reviewed)
AN - SCOPUS:84906074190
SN - 9984779068
SN - 9789984779065
T3 - Vide. Tehnologija. Resursi - Environment, Technology, Resources
SP - 262
EP - 269
BT - Proceedings of the 5th International Scientific and Practical Conference on Environment, Technology and Resources
PB - Rezekne Higher Education Institution
T2 - 5th International Scientific and Practical Conference on Environment, Technology and Resources
Y2 - 16 June 2005 through 18 June 2005
ER -