Identification of Stress Change Within a Rock Mass Through Apparent Stress of Local Seismic Events

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• 作者：Laura Brown ; Martin Hudyma
• 关键词：Seismicity ; Stress change ; Apparent stress ; Underground mining
• 刊名：Rock Mechanics and Rock Engineering
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：50
• 期：1
• 页码：81-88
• 全文大小：
• 刊物类别：Earth and Environmental Science
• 刊物主题：Geophysics/Geodesy; Civil Engineering;
• 出版者：Springer Vienna
• ISSN：1434-453X
• 卷排序：50

文摘

Mine blasting produces excavation geometry changes which induce stress change that can be observed in the seismic source parameter apparent stress calculated for local seismic events. Using high apparent stress as a proxy for increasing stress within a rock mass, areas experiencing increases in the local stress conditions can be determined. This paper presents the use of apparent stress of seismic events to identify areas within a rock mass experiencing local stress change. Examples from a deep Canadian mine, operating in excess of 2900 m below surface, are provided.