CAJ | 학술논문

在长江流域水下大直径盾构隧道的施工经验较少，面临长江水文、地质条件等诸多技术挑战，尤其是在江底高水压、浅覆土、大冲刷条件下盾构隧道掘进和环境安全问题至关重要。文章针对南京纬三路过江通道工程实例，通过引入多波束河床监测技术，对隧位河床水下地形、流速进行了全方位三维动态实测，并结合历史资料进行了河床冲刷阶段性的预测研究。采用多波束河床监测技术，实现了水下盾构隧道的超前水文、地质预报，为盾构隧道掘进的风险控制提供了技术保障。
재장강류역수하대직경순구수도적시공경험교소，면림장강수문、지질조건등제다기술도전，우기시재강저고수압、천복토、대충쇄조건하순구수도굴진화배경안전문제지관중요。문장침대남경위삼로과강통도공정실례，통과인입다파속하상감측기술，대수위하상수하지형、류속진행료전방위삼유동태실측，병결합역사자료진행료하상충쇄계단성적예측연구。채용다파속하상감측기술，실현료수하순구수도적초전수문、지질예보，위순구수도굴진적풍험공제제공료기술보장。
Many technical challenges related to hydrological and geological conditions were encountered during construction of large-diameter underwater shield tunnels in the Yangtze River basin due to lack of experience in these areas, especially regarding high water pressure, a shallow overburden and servere erosion conditons. Using the Weisan Road river-crossing tunnel as an example, multi-beam bathymetry-based riverbed monitoring tech-nology is used to take a three-dimensional dynamic measurement of the underwater topography and flow rate and to forecast the staged riverbed erosion condtions based on historical data. With the multi-beam bathymetry-based riverbed monitoring technology, advanced prediction of the hydrological and geological conditions of the underwa-ter shield tunnel is achieved, which provides technical support for the risk control of the shield tunnel.