Characteristics of rockburst location deflection and its 
microseismic activities in a deep tunnel

LI Tong; FENG Xia-ting; WANG Rui; XIAO Ya-xun; WANG Yong; FENG Guang-liang; YAO Zhi-bin; NIU Wen-jing

doi:10.16285/j.rsm.2018.0470

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Characteristics of rockburst location deflection and its microseismic activities in a deep tunnel

更新时间：2026-06-25

- Characteristics of rockburst location deflection and its microseismic activities in a deep tunnel
- Vol. 40, Issue 7, Pages: 2847-2854(2019)
- 作者机构：
  
  1. 中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室,湖北,武汉,430071
  2. 中国科学院大学,北京,100049
  3. 东北大学深部金属矿山安全开采教育部重点实验室,辽宁,沈阳,110819
  4. 中国铁路总公司拉林铁路建设总指挥部,青海,西宁,810007
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2018.0470
  CLC： TU459
- Online First：28 July 2019，
  
  Published：2019
- 稿件说明：
移动端阅览
LI Tong, FENG Xia-ting, WANG Rui, et al. Characteristics of rockburst location deflection and its microseismic activities in a deep tunnel[J]. 2019, 40(7): 2847-2854.
DOI：

LI Tong, FENG Xia-ting, WANG Rui, et al. Characteristics of rockburst location deflection and its microseismic activities in a deep tunnel[J]. 2019, 40(7): 2847-2854. DOI： 10.16285/j.rsm.2018.0470.

摘要

川藏铁路拉林段控制性工程巴玉隧道，施工过程中岩爆频发且呈现邻近区域岩爆位置不一现象。为此，通过微震监测系统原位观测了岩爆位置偏转过程中的岩体破裂演化规律，进一步探讨了岩爆位置发生偏转的原因。研究结果表明：岩爆位置偏转段两侧微震信息呈不均匀分布特征，微震活动（事件数、能量和视体积等参数）随岩爆偏转向岩爆发生位置集核偏转，两者具有良好的空间相关性。岩爆位置偏转段岩体损伤区及视应力的演化特征说明岩爆位置偏转与局部应力集中区变化相关，应力集中程度大的区域更易发生岩爆。相关研究成果对岩爆位置偏转预警及防治具有一定借鉴和参考意义。

Abstract

The Bayu tunnel is a controlled project in Nyingchi-Lhasa section of the Sichuan-Tibet railway. Rockbursts happen frequently

and rockburst locations are different in adjacent areas during the construction process. By using the microseismic monitoring system

the evolution laws of rock mass fracture were observed in situ during the process of rockburst location deflection. In addition

the reasons for the deflection of the rockburst locations were discussed. The results showed that the microseismic information was distributed unevenly on both sides of rockburst location deflection. Meanwhile

all the microseismic activities (the number of events

energy and apparent volume) deflected with the deflection of rockburst location

which indicates that they have an obvious spatial correlation. The evolution laws of apparent stress and excavation damaged zones of rock mass in the deflection location reveal that the deflection of rockburst location is related to the change of local stress concentration area

and the rockburst more easily occurs in the area with larger stress concentration. The results provide significant references for the warning and prevention of the deflection of the rockburst locations.

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