摘要
东非大裂谷火山、地震、断层移动和地裂缝等地质作用活跃,严重威胁隧道安全,有必要研究裂谷内山岭隧道地质灾害破坏。通过系统分析东非大裂谷山岭隧道地质灾害风险源,建立了4类22项风险评价指标体系以及裂谷内山岭隧道地质灾害风险熵权可拓物元方法评价方法,开发了相应的风险安全可视化程序,得到东非大裂谷山岭隧道地质灾害破坏等级,提出了相应风险控制措施。运用该模型得到东非大裂谷内马铁路2号隧道地质灾害破坏等级为S4,对此风险控制措施可为提高抗隧道震设防烈度,进行隧道抗断层、抗震和抵抗火山作用综合研究设计,严格把控隧道施工质量,进行裂谷地质活动和隧道安全监测,及时进行隧道地质灾害预警,同时制定隧道地质灾害处置和救援预案。研究结果可对类似工程地质灾害风险评价和控制研究提供参考。
The active geological processes of the Great Rift Valley of East Africa,such as volcanos,earthquakes,fault movement and ground fissures,seriously threaten the safety of mountain tunnels,so it is necessary to study the geological disaster damage of mountain tunnels in the Great Rift Valley.This paper systematically analyzes the risk sources of geological disasters of mountain tunnel in the Great Rift Valley in East Africa,establishes the risk assessment index system with 4 categories-22 items and the entropy weight matter-element extension evaluation method for the geological disaster risk of the mountain tunnel in the Rift Valley,then develops the corresponding risk safety visualprogram,obtains the damage level of geological disasters of the tunnel in the Great Rift Valley in East Africa,and puts forward the corresponding risk control measures.The research results show that the damage level of geological disaster of tunnel No.2 of Malaysia railway in the Great Rift Valley is S4.The risk control measures are suggested such as the improving of tunnel seismic fortification intensity,comprehensive design of tunnel for anti-fault,anti-seismic and anti-volcanic action,the strict control of tunnel construction quality,the early warning and monitoring of geological disasters in tunnels,and the tunnel geological disaster treatment and rescue.The research results of this paper can provide reference for similar engineering geological hazard risk assessment and control research.
作者
尉德新
曾旻
吴荣
李沛
彭述权
樊玲
李文如
WEI Dexin;ZENG Min;WU Rong;LI Pei;PENG Shuquan;FAN Ling;LI Wenru(CCCC First Harbor Engineering Co.,Ltd.,Tianjin 300461,China;CCCC Tianjin Port Engineering Institute Co.,Ltd.,Tianjin 300222,China;School of Resources and Safety Engineering of Central South University,Changsha 410083,China)
出处
《华南地震》
2021年第3期18-25,共8页
South China Journal of Seismology
基金
国家自然科学基金项目(51508579,51674287)。
关键词
东非大裂谷
山岭隧道
地质灾害
熵权可拓物元方法
风险控制
Great Rift Valley of East Africa
Mountain tunnel
Geological disaster
Entropy weight matterelement extension method
Risk control
