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S. D. McKinnon 《Rock Mechanics and Rock Engineering》2006,39(3):255-279
Summary. Observations of seismicity and ground control problems in the Sudbury mining camp have shown that late-stage (young) sub-vertical
strike-slip faults are sensitive to small mining-induced stress changes. The strength-limited nature of stress measurements
made in the region indicates that these structures are in a state of marginal stability. Numerical continuum models are developed
to analyze the behavior of such structures. In the models, shear strain localizations (faults) evolve such that there is close
interaction between the fault system, stresses, and boundary deformation. Fault slip activity in these systems is naturally
sporadic and reproduces the commonly observed Gutenberg-Richter magnitude frequency relation. It is shown that a relatively
minor disturbance to such a system can trigger significant seismicity remote from the source of the disturbance, a behavior
which cannot be explained by conventional numerical stress analysis methodologies. The initially uniform orientation of the
stress field in these systems evolves with increasing disorder, which explains much of the scatter commonly observed in data
sets of stress measurements. Based on these results, implications for stress measurement programs and numerical stability
analysis of faults in mines are discussed. 相似文献
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基于双岩模式的抚顺煤田矿震成因机理探讨 总被引：1，自引：0，他引：1
矿震是由采矿活动所引起的,产生于某些特定岩体,一定深度受高应力影响的微震.抚顺是我国著名的"煤都",但由于开采深度的加大,产生的矿震对城市的影响日益严重,并产生了强烈的破坏作用,影响了城区的发展和人们的正常生活.本文在介绍抚顺矿震特征类型基础上,提出了产生矿震的可能潜在条件,借用双岩模式对抚顺煤田矿震成因机理进行了探讨,并借鉴日本Miike煤矿认为矿震可能主要产生于1140 m以上,煤层中的巷道表面高应力集中地带为矿震发生的主要区域. 相似文献
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Seismological models for mining-induced seismic events 总被引：1，自引：0，他引：1
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