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Seismological method for prediction of areal rockbursts in deep mine with seismic source mechanism and unstable failure theory

ISSN号：1001-1250
期刊名称：《金属矿山》
时间：0
分类：TU43[建筑科学—岩土工程;建筑科学—土工工程] P315.75[天文地球—地震学;天文地球—固体地球物理学;天文地球—地球物理学]
作者机构：[1]School of Resources and Safety Engineering, Central South University, Changsha 410083, China, [2]Department of Civil Engineering, University of Toronto, Toronto M4Y 1R5, Canada
相关基金：Project（2010CB732004） supported by the National Basic Research Program of China; Project（50490274） supported by the National Natural Science Foundation of China

作者：唐礼忠[1,2], XIA K W[2]

关键词：地震预测方法, 深井岩爆, 震源机制, 破坏理论, 不稳定, 地震危险性, 面源, 岩爆预测, areal rockburst prediction, seismic source mechanism, unstable failure, deep mine, seismic stiffness, seismic nucleation

中文摘要：

关于岩石爆炸预言的研究用 Dongguashan 铜矿(DCM ) 根据地震学，岩石力学和数据被做，在中国的最深的金属矿。对在 DCM 的采矿的地震回答通过地震事件的 hypocenters，明显的压力和排水量的时间空间的分发的分析被调查，并且在 DCM 的危险 seismicity 的产生的过程在地震来源机制在粗糙的理论的框架被学习。在 DCM 与危险 seismicity 和危险地震成核的一个概念的模型定位区域的一个方法被建议。rockburst 预言的一个标准在不稳定的失败理论的框架理论上被分析，并且因而，在在在包围区域的到那的一个地震成核区域的岩石的地震僵硬的比率的变化的率， dS/dt，被定义为 rockburst 预言的一个索引。如果， rockburst 的可能性将增加 dS/dt > 0，并且冲破的岩石的可能性将减少如果 dS/dt < 0。这些方法的正确性被岩石失败案例的分析在 DCM 表明。

英文摘要：

The research on the rock burst prediction was made on the basis of seismology, rock mechanics and the data from Dongguashan Copper Mine （DCM）, the deepest metal mine in China. The seismic responses to mining in DCM were investigated through the analyses of the spatio-temporal distribution of hypocenters, apparent stress and displacement of seismic events, and the process of the generation of hazardous seismicity in DCM was studied in the framework of the theory of asperity in the seismic source mechanism. A method of locating areas with hazardous seismicity and a conceptual model of hazardous seismic nucleation in DCM were proposed. A criterion of rockburst prediction was analyzed theoretically in the framework of unstable failure theories, and consequently, the rate of change in the ratio of the seismic stiffness of rock in a seismic nucleation area to that in surrounding area, dS/dt, is defined as an index of the rockburst prediction. The possibility ofa rockburst will increase if dS/dt〉0, and the possibility of rock burst will decrease if dS/dt〈0. The correctness of these methods is demonstrated by analyses of rock failure cases in DCM.