Associate Professor
Supervisor of Doctorate Candidates
Supervisor of Master's Candidates
Title of Paper:基于微震监测技术的岩爆预测机制研究
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Date of Publication:2016-01-01
Journal:岩石力学与工程学报
Included Journals:EI、PKU、ISTIC、CSCD
Volume:35
Issue:3
Page Number:470-483
ISSN No.:1000-6915
Key Words:岩石力学; 深埋隧洞; 微震监测; 岩爆; 微破裂前兆
Abstract:以锦屏二级水电站岩爆高发洞段作为研究对象,采用微震监测技术作为岩爆监测预警手段。通过对比现场实际情况和微震监测结果,揭示出微震的时空演化与岩爆之
间的关系;通过岩体损伤过程特征提取对应的微震监测事件,总结出微震事件密度云图、微震事件震级与频度的关系、微震事件震级、能量集中度等微震监测指标规
律,并以地震学中的3S原理作为岩爆判断基础,提出4个岩爆判据。现场应用结果表明:在深埋岩体隧洞中,岩爆的时间、空间、强度等分布存在较明显的规律性
,微震活动对岩爆事件普遍具有时间优先性和空间一致性,应用该岩爆判据能够达到岩爆危险区域的精确预测,为隧洞的岩爆预测和微震监测预警提供依据。
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