摘要
陕北砂泥(页)岩中的水工隧洞由于所处的区域构造稳定、地震烈度低,因此构造简单,地层近水平,砂泥(页)岩呈互层结构,岩石一般为中硬岩和软岩。隧洞的变形破坏主要表现为顶拱的拉张弯曲变形和崩塌及拱脚的崩塌滑移变形,一般自稳性较好。笔者根据调查资料和经验,提出对该类水工隧洞围岩的加固意见。
Sand-shale in hydraulic tunnel of north Shaanxi are general middle hard rock and soft rock due to the regional tectonic stability, low seismic intensity, simple structure and horizontal layer. The deformation failure of the tunnel mainly presented as bending deformation and avalanche at the arch top and avalanche slip deformation at the arch foot,the selfstability is usually good. The suggestions on surrounding rock reinforcement have been put forward by the author according to the investigation data and his own experience.
出处
《资源环境与工程》
2009年第5期736-738,共3页
Resources Environment & Engineering
关键词
陕北砂泥岩
水工隧洞
变形特征
加固意见
sand-shale in north Shaanxi
hydraulic tunnel
deformation feature
reinforcement suggestion
