水电工程造价预测分析中隧洞超挖超填率计算方法探究  

Research on Calculation Method of Tunnel Over-excavation Rate and Overfill Rate in Hydropower Engineering Cost Estimation

作　　者：张志川 袁上丰 Zhang Zhichuan;Yuan Shangfeng(Power China Chengdu Engineering Corporation Ltd.,Chengdu 610072,China)

机构地区：[1]中国电建集团成都勘测设计研究院有限公司,四川成都610072

出　　处：《工程造价管理》2025年第1期81-87,共7页Engineering Cost Management

摘　　要：水电工程造价预测分析时,不同断面面积隧洞超挖率以及不同断面面积、衬砌厚度隧洞超填率不明确,这给工程造价编制造成不确定性。在对相关规程规范研究基础上,文章提出了圆形、城门洞形隧洞超挖率以及直接衬砌、喷锚支护后衬砌隧洞超填率的计算方法,给出了计算公式,并进行了验证。结果表明:提出的计算方法切实可行,计算公式可操作性强,可用于水电工程造价预测分析中隧洞超挖率、超填率的计算。The tunnel over-excavation rate of different cross-sectional areas and the tunnel overfill rate of different sectional areas and lining thicknesses is unclear in hydropower engineering cost estimation,which causes uncertainty in the preparation of project costs.On the basis of the study of the relevant procedures and norms,the calculation method of the over-excavation rate of round tunnel and tunnel with gate layout and the overfill rate of round tunnel and tunnel with gate layout with directly lining or lining after anchor spray support is proposed.In addition,the calculation formula is given,which is verified by normative data.The proposed calculation method is feasible and the calculation formula is highly operable,which can be used in the calculation of tunnel over-excavation rate and overfill rate in hydropower engineering cost estimation.

关 键 词：水电工程 造价预测分析 城门洞形隧洞 超挖率 超填率 

分 类 号：F426[经济管理—产业经济] TU-9[建筑科学]