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浙江苍岭隧道岩爆工程地质特征分析与防治措施研究
引用本文:汪琦,唐义彬,李忠.浙江苍岭隧道岩爆工程地质特征分析与防治措施研究[J].力学学报,2006,14(2):276-280.
作者姓名:汪琦  唐义彬  李忠
作者单位:1. 石家庄铁路职业技术学院,石家庄050043; 2. 中国铁道建筑总公司第十五工程局隧道公司,洛阳471000; 3. 石家庄铁道学院土木分院,石家庄050041
摘    要:根据在浙江苍岭隧道施工中发生的岩爆,通过现场地质观测资料,具体地分析了其形成的规模、位置、诱发因素以及地质条件,从地质工程的角度,对岩爆发生地段隧道的岩石组成、地质构造、地应力特征以及地下水情况进行了探讨,发现在苍岭隧道施工中发生岩爆的岩石具有岩体结构面发育适中、弹性模量大、P波波速高、地质构造简单、现代水平构造应力强且主压应力轴σ1大角度相交于隧道中轴线和地下水不发育的特征,并在此基础上,提出了掌子面喷水、布设释放地应力锚杆、减少隧道壁聚能结构等有效的岩爆防治措施。

关 键 词:岩爆  工程地质特征  防治措施  苍岭隧道
收稿时间:2004-12-27
修稿时间:2005-12-09

ENGINEERING GEOLOGICAL CHARACTERISTICS AND PREVENTION MEASURES FOR ROCK BURSTS IN CANGLING TUNNEL,ZHEJIANG PROVINCE
WANG Qi,TANG Yibin,LI Zhong.ENGINEERING GEOLOGICAL CHARACTERISTICS AND PREVENTION MEASURES FOR ROCK BURSTS IN CANGLING TUNNEL,ZHEJIANG PROVINCE[J].chinese journal of theoretical and applied mechanics,2006,14(2):276-280.
Authors:WANG Qi  TANG Yibin  LI Zhong
Institution:1. Shijiazhuang Institute of Railway Technology,Shijiazhuang050041; 2. The Tunnel Company of the Chinese Fifteenth Railway Construction Company,Luoyang471000; 3. Shijiazhuang Railway Institute,Shijiazhuang050043
Abstract:Rock bursts occurred during the construction of Cangling Tunnel.The field geological investigation was conducted.Examinations were further carried out on the size,location,inducing factors and geological conditions of the rock bursts.The rock conditions,the geological structures,the ground stress characteristics and the groundwater conditions of the rock burst zones were assessed using the engineering geology methods.It was found that the rock where bursts occurred had the following features:(a) good developed structural planes,(b) high elastic modulus,(c) high velocity of P wave,(d) simple geologic structures,(e) large current horizontal tectonic in-situ stresses,(f) the direction of the major compressive in-situ stress intersecting with the tunnel alignment axis at a large angle,as well as(g) poorly developed groundwater.Based on the investigation,the effective measures for preventing rock burst are proposed.These measures include watering on the heading face,installing bolts for releasing the in-situ stresses and reducing the tunnel wall structures that can reserve tunnel deformation energy.
Keywords:Rock burst  Engineering geology  Prevention measures  Cangling tunnelling
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