POST-CLOSURE SEISMICITY IN THE MINES OF KOLAR GOLD FIELDS
The occurrence of rockbursts in one of the deepest mines in the world, the deep gold mining region of the Kolar Gold Fields (KGF) in Southern India was closed in 1991. Following this, when deeper levels were inundated with water, increased number of seismic events were observed at two areas where Champion mine dyke and the Mysore North fault meet the water body. Apparently, the increasing quantity of water is tending to create a super hydrostatic fluid pressure gradient at that depth. The entire mine was closed during the year 2001 and significant seismic activity continued to occur. A noticeable rockburst with magnitude 2.8 occurred on November,2 2005 in the old and abandoned mines of KGF followed by series of seismic events. The rockburst was severe and the effect was felt by residents of adjoining areas and surrounding townships. The rockburst caused panic among people and it is reported that people came out of their houses. This paper documents the seismic activity that has occurred in this mine since closure of deeper levels and the entire mine and shows the relationships of the rate of seismic activity to the flooding within the mine.
C.SRINIVASAN Y.AHNOCH WILLY P.C.NAWANI
National Institute of Rock Mechanics Champion Reefs-563 117, Kolar Gold Fields, India
国际会议
The 7th International Symposium on Rockburst and Seismicity in Mines(2009年第七届国际岩爆与微振动性学术研讨会)
大连
英文
1325-1336
2009-08-21（万方平台首次上网日期，不代表论文的发表时间）