尕狼禅隧道软弱破碎带围岩施工技术  

Construction technique for weak surrounding rocks in Galongchan Tunnel

作　　者：赵宏[1] 唐晓强 牛富生[1] 

机构地区：[1]同济大学地下建筑与工程系,上海200092 [2]中国石油天然气华东勘察设计研究院岩土工程公司,山东青岛266071

出　　处：《工程勘察》2013年第6期33-37,共5页Geotechnical Investigation & Surveying

摘　　要：对于软弱破碎围岩隧道的开挖施工需要综合采用预报、支护、监测等综合技术进行处理,本文以尕狼禅隧道的施工方案为例,介绍了软弱破碎围岩的处理技术,并对隧道CRD开挖方案进行了分析。尕狼禅隧道由于围岩条件较差,多处为V类围岩,因此开挖采用CRD工法进行施工。超前支护综合采用了多种支护技术,在开挖和支护方面采用的CRD技术使得隧道稳定性得到了保证。在监测方面采用比较先进的无接触法测量围岩变形。这些施工技术对于大断面软弱围岩隧道具有现实指导意义。The prediction, supporting and monitoring should together be taken account for the excavation of the weak surrounding rock tunnel. Taking the construction plan of Glongchan Tunnel as the example, the treatment process of the weak surrounding rock tunnel is presented, and the excavation scheme for the tunnel is analyzed. The CRD method is applied for Galongchan Tunnel due to the bad conditions of the surrounding rocks which rank to the V-type rock. In the advanced supporting method the multiple support techniques and CRD method are adopted during the process of the excavation, and the support stability is successfully solved. The deformation of the tunnel surrounding rocks can be obtained by using the fairly advanced technique, the non-contact measurement method. All the construction techniques for the soft and weak rock tunnels with large cross section are of the practical guiding significance to the design of the project.

关 键 词：隧道 CRD 软弱围岩 超前支护 无接触量测 

分 类 号：TU457[建筑科学—岩土工程] U455.49[建筑科学—土工工程]