Detection and monitoring of high stress concentration zones induced by coal mining using numerical and microseismic method

Gloria Senfaute (1) , Marwan Al Heib (1) , Jean-Pierre Josien (1) , J.-F. Noirel (2)

1 INERIS - Institut National de l'Environnement Industriel et des Risques
2 Houillières du Bassin de Lorraine

Zones of high stress concentration induced by coal mining at a depth of 1250 meters in the Lorraine Collieries are detected and monitored using a combination of numerical and microseismic methods. Changes in the stress state induced by coal mining are estimated by means of numerical simulations. The areas of high stress concentration are located and monitored by local microseismic network. The study of microseismic activity recorded during mining made it possible to localise the zones of high stress concentration and validate the calculations done by numerical modelling. The results of this study hold out interesting prospects for using a combination of numerical modelling and microseismic monitoring for detecting, locating and monitoring of the zones prone to rockbursts.

Mots clés: COAL MINING; MICROSEISMIC; ROCKBURSTS

Domaines: Sciences de la Terre; Sciences de l'environnement

Gloria Senfaute, Marwan Al Heib, Jean-Pierre Josien, J.-F. Noirel. Detection and monitoring of high stress concentration zones induced by coal mining using numerical and microseismic method. 5. International Symposium on "Rockbursts and seismicity in mines", Sep 2001, Sandton, South Africa. ⟨ineris-00972231⟩