Stress state rock mass monitoring ahead of longwall No. II/501/C, Mine Staszic-Wujek, PGG, Poland -Project RFCS DD-MET

0564435 - ÚGN 2023 CZ eng V - Research Report
Waclawik, Petr - Kukutsch, Radovan - Staš, Lubomír - Souček, Kamil - Vavro, Leona - Vavro, Martin - Kubina, Lukáš - Schuchová, Kristýna
Stress state rock mass monitoring ahead of longwall No. II/501/C, Mine Staszic-Wujek, PGG, Poland -Project RFCS DD-MET.
1. - Ostrava: Ústav geoniky AV ČR, v. v. i., 2022. 51 s.
Source of funding: N - Non-public resources
Keywords : pre-mining stress * induced stress * 3D laser scanning
OECD category: Environmental and geological engineering, geotechnics

For designing precisely the reinforcement of mine gate and reinforcing underground structures in general, knowing stress and deformation states in the rock massive in the immediate vicinity of these mine works as precisely as possible is absolutely decisive. In order to verify the rock mass stress state and its changes induced by longwall mining, the monitoring of rock mass stress changing in connection with the mine out of the coal seam No. 501, longwall face No. II/501/C in the Mine Staszic-Wujek, Poland, was suggested. The aim of the contractual research was the realisation and interpretation of the rock stress state monitoring using the CCBO (Compact Conical ended Borehole Overcoring method) and CCBM (Compact Conical ended Borehole Monitoring method) probes in the forefield of mentioned longwall face within geotechnical station. To verify stress monitoring, the survey of the state of the longwall gate was carried out using a pulse 3D scanner. The purpose was to capture deformation changes ahead of the advancing longwall face, specifically, at five stages in the ± 20 m section on each side from the installed geotechnical station.
Permanent Link: https://hdl.handle.net/11104/0336105