不良地质条件下洞室开挖方案比选及施工要点研究  

Study on the Comparison and Selection of Cavern Excavation Schemes and Construction Key Points under Unfavorable Geological Conditions

作　　者：魏强强 Wei Qiangqiang(Gansu Investigation Design Institute of Water Conservancy and Hydropower,Lanzhou,China)

机构地区：[1]甘肃省水利水电勘测设计研究院有限责任公司,甘肃兰州

出　　处：《科学技术创新》2023年第14期137-140,共4页Scientific and Technological Innovation

摘　　要：甜水堡调蓄引水工程1#隧洞段线共设置3座支洞进行辅助施工作业,施工过程中发现1#隧洞中3#支洞位置所处工程地质条件较差,淤泥层强度较小且涌水量较大,根据现场实际情况需重新安排施工方案,为确保施工方案满足开挖需求,本文着重考虑工程造价、工期安排以及施工难度等方面,对三个地下洞室开挖方案进行比选,得出施工时应按照方案二中的2#线路掘进方案进行。本文分析过程可为后续针对不良地质条件的洞室开挖方案比选工作提供借鉴。Tianshuibao water diversion project 1#tunnel section line set up a total of 3 branch holes for auxiliary construction operations,during the construction process found that the location of the 3#branch cave in the 1#tunnel is located in the poor engineering geological conditions,the strength of the silt layer is small and the water inflow is large,according to the actual situation of the site need to rearrange the construction plan,in order to ensure that the construction plan meets the excavation needs,this paper focuses on the project cost,construction period arrangement and construction difficulty,etc.,the three underground cavern excavation schemes are compared,and the construction should be according to 2#in the scheme 2#The line boring scheme was carried out.The analysis process in this paper can provide reference for the subsequent comparison of cavern excavation schemes for adverse geological conditions.

关 键 词：不良地质 水利工程 地下洞室开挖 施工方案比选 

分 类 号：TV512[水利工程—水利水电工程]