Seismic monitoring of subsidence of ground surface caused by mining at zheskazgan mine, kazakhstan

摘要

Catastrophic seismic events, such as a sudden collapse of open pits and undeground excavations, as well as a vast surface subsidence induced by mining activities, present serious dangers to the modern infrastructure. In fact these "sudden" events are the results of long-term preparatory processes, which are occurring in mine pillars and ambient rock.The kinetic approach was proposed fro the description of the preparatory process. The process presents a stockastic accumulation of defects in rock caused by a long-term redistribution of stress-strain in an ambient rock massif. Case studies related to mining activities at Zhezkazgan copper mines, Rep. Kazakhstan, were considered. As was shown the seismic monitoring is good method for forecasting catastrophic caving and surface subsidence.