摘要
指出了我国现行高速公路隧道设计中采用的围岩分级方法的缺陷,提出在施工阶段通过对隧道围岩进行勘探和测试,并对其结果进行综合分析,在此基础上对隧道围岩进行动态分级,并以广贺高速公路文坑隧道YK73+830断面为例,通过对其掌子面处围岩进行地质雷达探测、点荷载试验和声波测试,结果表明实际的围岩级别与设计阶段的不符,从而对其进行调整。
The paper points out the flaws of the way for classification of surrounding rock in the highway tunnel design,and poses to explore and test the surrounding rock during the construction stage and analyze its result,then conduce dynamic classification of the tunnel surrounding rock.Giving an example of YK73＋830 section of Wenkeng tunnel in Guanghe expressway,through carrying geological radar detection,point-load trial and sound wave test on the surrounding rock of heading face,its results show that the actual surrounding rock is not agree with which was designed,thus revises the designed grade.
出处
《西部探矿工程》
CAS
2011年第7期190-192,195,共4页
West-China Exploration Engineering
关键词
公路隧道
围岩
动态分级
highway tunnel
surrounding rock
dynamic classification
