盾构隧道施工中地下溶、土洞处理技术

The Treatment Technology of the Earth Cave and Karst Cave Underground in the Construction of Shield Tunnel

在城市地下轨道建设中,地下溶、土洞的存在和发育对隧道的建设和运营造成较大的风险,因此必须对地下溶、土洞进行处理。本文结合工程实例,明确了盾构隧道施工中溶、土洞处理的目的与范围,从地质勘探、溶、土洞处理措施以及注浆工艺等方面详细介绍了溶、土洞处理的施工技术,并对溶、土洞处理的效果进行检测分析,保证盾构隧道施工的安全。本文就盾构隧道穿越溶、土洞区域难题,提出了处理措施,以指导类似施工。

In the construction of urban underground rail, that existence and development of soil-hole are a big risk to construction and operation of the tunnel, so must be dissolved on the ground. In this paper, through an engineering example, it points out the purpose and scope of soil cave treatment in the shield tunnel, from geological exploration, soil cave treatment measures, grouting technology and other aspects, the construction technology of the earth cave and karst cave treatment, the last of the solution, test analysis of the effects of treatment to ensure the safety of tunnel construction. In this paper, aim at shield tunnel through the earth cave and karst cave, proposed to deal with measures to guide similar to the construction.