Rockburst prediction technology combining rock mass structure analysis and electromagnetic emission monitoring—a case study of Uzbekistan Kamchik tunnel
LIU Chengyu1，2，LI Hongjun3，YU Shiwei1，FAN Zuohong1，LIN Wei1
(1. College of Environment and Resources，Fuzhou University，Fuzhou，Fujian 350116，China；2. Research Center of Geological Engineering，Fuzhou，Fujian 350116，China；3. China Railway Tunnel Bureau Group Co.，Ltd.，Guangzhou，Guangdong 511458，China)
Abstract：The prediction of rockbursts during the construction of underground caverns is of great significance to ensure the safety of construction workers and to arrange the construction progress rationally. In this paper，a rockburst prediction method combining rock mass structure analysis and electromagnetic emission monitoring is proposed. In the process of implementation，the possibility of rockburst is preliminarily judged by the observation of the excavation face and its nearby rock mass structure，the potential rockburst area is then monitored by using portable electromagnetic emission meter，and finally the possibility and intensity of rockburst can be further predicted based on the changes of the electromagnetic emission energy and pulse. The developed method，comprehensively considering the rock mass structure conditions of rockburst occurrence as well as the energy conversion and rock micro-fracture frequency during the process of rockburst，is easy to be mastered and applied by field technicians，and has proved to feasible for rockburst prediction during the construction of underground caverns. Taking the Central Asia's longest tunnel—Uzbekistan Kamchik tunnel as an example，the rockburst prediction method，including rock mass structural conditions of rockburst，key monitoring positions and method of electromagnetic emission，the electromagnetic emission interpretation indexes and reference value of rockburst，is systematically introduced.
刘成禹1，2，李红军3，余世为1，范佐洪1，林 炜1. 岩体结构分析与电磁辐射监测相结合的岩爆预测技术——以乌兹别克斯坦卡姆奇克隧道为例[J]. 岩石力学与工程学报, 2020, 39(2): 349-358.
LIU Chengyu1，2，LI Hongjun3，YU Shiwei1，FAN Zuohong1，LIN Wei1. Rockburst prediction technology combining rock mass structure analysis and electromagnetic emission monitoring—a case study of Uzbekistan Kamchik tunnel. , 2020, 39(2): 349-358.
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2020, Vol. 39 
