黑石岭隧道围岩岩爆灾害的研究  

Research on Surrounding Rockburst of Heishiling Tunnel

作　　者：周兴国[1] 高永涛[1] 卢宏建[1] 韩晓强[2] 

机构地区：[1]北京科技大学土木与环境工程学院,北京100083 [2]河北省地矿局第五地质大队,河北唐山063000

出　　处：《防灾减灾工程学报》2010年第4期435-441,共7页Journal of Disaster Prevention and Mitigation Engineering

基　　金：教育部重点项目(105016)资助

摘　　要：地应力环境与围岩力学属性是隧道工程中引发岩爆的两大决定性因素。为了研究黑石岭隧道开挖过程中围岩岩爆灾害的潜在威胁及其表现规律,通过对岩爆里程段的现场采样、运用Kaiser效应法测量原岩应力和室内岩石力学实验,探讨了工程区内白云岩的岩性特征及其破坏规律,并基于强度理论和冲击能指标分析了发生岩爆的可能性及其发生方式。分析得知,该工程区内岩爆的潜在威胁较大,尤其是测点1和测点2处发生强岩爆的可能性最大,须在工程开挖过程中加强防治。In-situ stress and rock mechanical properties are two decisive factors of rockburst caused by underground tunnel excavation. In order to research the potential threat and the law of rockburst in Heishiling Tunnel excavation process, based on scene sampling in rockburst area, in-situ stress measurement by Kaiser effect method and indoor rock mechanical experiment, we investigated the mechanical properties and failure law of dolomite rock in project area. Then, based on the strength theory and the impacting energy index, we analyzed the possibility of rockburst and the way of rockhurst occurrence, and provided a theoretical basis for prediction and control of rockburst. Conclusions show that the potential threat of rockburst in the area is significant. In particular, strong rockburst is likely to occur in measuring point 1 and 2. We should do our best to prevent and deal with the strong rockburst in excavation process.

关 键 词：岩石力学 岩爆 强度理论 冲击能指标 

分 类 号：TU457[建筑科学—岩土工程]