摘要
高压输水隧洞作为有效调送水资源的基础设施在调水工程中得到广泛运用,浅埋高压输水隧洞运营期间在高内水压作用下,存在混凝土衬砌开裂的风险.本文以杭州市千岛湖配水工程为背景,采用控制变量法,利用Abaqus建立有限元模型,针对不同隧洞埋深、不同地下水位以及不同围岩类别下的引水隧洞模型进行渗流应力耦合分析,探究衬砌在不同外界条件下的应力响应.研究结果表明,隧洞埋深大、地下水位高、围岩等级高等有利因素影响下,衬砌内侧最大拉应力较小,隧洞衬砌开裂风险较低.
High-pressure water diversion tunnels, as an effective way to transfer water are constantly being designed and built. Shallow water diversion tunnel for high pressure has cracking risks on concrete lining due to high water pressure acting on it. Based on the Qiandaohu Diversion Engineering Project, a model which contains both soil and lining was created using the software Abaqus for the finite element calculation for different tunnel depths, different groundwater levels and different classes of surrounding rocks to simulate the tunnels across different places. In the shallow areas, deeper the tunner, the higher the groundwater table and better the rock, the smaller the maximum tensile stress on the lining,the safer the lining will be.
出处
《三峡大学学报（自然科学版）》
CAS
2017年第2期34-38,共5页
Journal of China Three Gorges University：Natural Sciences
基金
国家自然科学基金项目(51309086)
中央高校专项科研基金(2016B08114)
关键词
浅埋
引水隧道
衬砌
shallow buried
water diversion tunnel
lining
作者简介
通信作者：倪小东（1981-），男，副研究员，主要从事渗透变形方面的教学研究工作．E—mail：lulingxd@126．com
