院报 ›› 2012, Vol. 29 ›› Issue (9): 69-73.DOI: 10.3969/j.issn.1001-5485.2012.09.016

• 岩土工程 • 上一篇    下一篇

基于微震监测技术的深埋长大隧洞群岩爆时空分布规律分析

揭秉辉1，赵周能2，陈炳瑞3a,3b，肖亚勋3a,3b，丰光亮3a,3b   

  1. 1.二滩水电开发有限责任公司， 成都  610051； 2.东北大学 资源与土木工程学院， 沈阳 110819；3.中国科学院 a.武汉岩土力学研究所; b.岩土力学与工程国家重点实验室，武汉  430071
  • 收稿日期:2012-03-22 修回日期:2012-05-17 出版日期:2012-09-01 发布日期:2012-09-13
  • 通讯作者: 赵周能（1976- ），男，广西桂林人，讲师，博士研究生，主要从事采矿及深部岩石力学的研究工作
  • 作者简介:揭秉辉（1969- ），男，江西南丰人，教授级高级工程师，主要从事岩石力学与灾害防治方面的研究工作
  • 基金资助:

    国家自然科学基金资助项目(50909092)；湖北省自然科学基金(2009CDB120)

Regularity of Spatio-Temporal Distribution of Rockburst in Deep-Buried Long Tunnels Based on Microseismic Monitoring Signals

JIE Bing-hui1,  ZHAO Zhou-neng2,  CHEN Bing-rui3,4,  XIAO Ya-xun3,4,  FENG Guang-liang3,4   

  1. 1.Ertan Hydropower Development Co., Ltd., Chengdu  610051, China; 2. School of Resource and Civil Engineering, Northeastern University, Shenyang 110819, China; 3.Institute of Rock andSoil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China; 4. State Key Laboratory ofGeomechanics and Geotechnical Engineering, Chinese Academy of Sciences, Wuhan  430071,China
  • Received:2012-03-22 Revised:2012-05-17 Online:2012-09-01 Published:2012-09-13

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摘要： 以锦屏二级水电站深埋引（排）水隧洞群为工程背景，介绍了微震监测系统的组成，并根据隧洞工程的特点，优选出紧跟掌子面移动整体协同传感器优化布置方案；利用现场微震数据，探讨了微震事件和岩爆的时空相关性。研究结果表明：微震活跃及平静时段与岩爆显现频繁及稀少时段相吻合，微震事件和岩爆的空间分布规律相一致，表明微震事件时空演化规律与岩爆时空分布规律具有良好的相关性。通过分析和研究微震事件时空分布规律，可以对岩爆灾害进行有效预测，为岩爆防治提供科学依据。

关键词: 岩石力学, 微震监测, 岩爆, 时空分布, 深埋隧洞

Abstract: The microseismic monitoring system used in the deep-buried diversion and drainage tunnels of Jinping-II hydropower station is introduced. An optimized layout of sensors working together with each other and keeping up with the movement of working face is proposed in line with the characteristic of tunnel excavation. The spatio-temporal evolution relation between microseismic event and rockburst is discussed. Results show that the active and quiet periods of microseismic activity coincide respectively with the frequent and rare rockburst-occurring periods, and the space distribution feature of microseismic events is similar to that of rockburst. The spatio-temporal evolution of microseismic events correlates well with the distribution features of rockburst. Therefore, it is possible and feasible to forecast rockburst disaster by the analysis and research on spatio-temporal evolution of microseismic events, which can provide scientific basis for rockburst prevention.

Key words:  rock mechanics, microseismic monitoring, rockburst, spatio-temporal distribution, deep-buried tunnel

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