METHOD OF SEISMIC RISK REDUCTION IN POLISH COPPER MINES

摘要：

In order to monitor a safe transformation of mine pillar core from elastic to the post-critical state caused by the advancing mining faces, sensor for borehole deformation measurement of DL (Diameter - Length) type was developed. The sensor, installed in the central area of the pillar, measures the AD - vertical diameter deformation of the horizontal borehole and AL -deformation of the rock-mass along the axis of borehole (both with definition of ca 1 micrometer). Specific relationship between AD and AL values, measured during the mining face progress, confirms safe transformation of the pillar core into the post-critical state or indicates an unsafe one, which means that pillar remains in the dangerous elastic state. In this case, relaxing blasts are necessary to avoid the risk of pillar type bump.

作者: STANISLAW ORZEPOWSKI JAN BUTRA

作者单位: Rock Deformation Measurements, Wroclaw, Poland KGHM Cuprum Ltd.- Research and Development Centre, Wroclaw, Poland

会议类型: 国际会议

会议名称: The Third International Conference on Nwe Development in Rock Mechanics and Engineering(NDRM2009)(第三届国际岩石力学与工程新进展学术会议)

会议地点: 三亚

会议语种:英文

页码: 395-400

在线出版日期: 2009-05-24（万方平台首次上网日期，不代表论文的发表时间）