摘要
河床冲刷深度对穿河隧道的安全埋深设计至关重要。埋深不足会导致隧道运行安全和河道行洪安全受到威胁,而埋深过深会造成不必要的投资浪费。以珠三角网河区穿河隧道为例,基于河道地质和水文条件,对河床演变趋势进行深入分析,并采用规范推荐及业内常用的冲刷深度计算公式进行详细计算。通过对计算结果的比较分析,确定了合理的河道冲刷深度取值,为类似工程提供了参考依据。
The scouring depth is very important for the embedded depth design of cross-river tunnel.The shallow embedded depth of the tunnel may affect the safety of tunnel and flood.If the tunnel is embedded too deep,the investment will be wasted.Take the cross-river tunnel in the Pearl River Delta as an example,on the basis of the geological and hydrological conditions and analysis of riverbed evolution,the scouring depth is calculated by using the formula,recommended by the standard and commonly used.The results are compared and analyzed to determine the scouring depth.The analysis results can be used as reference for similar projects.
作者
文丽
Wen Li(Guangdong Hydropower Planning&Design Institute Co,.Ltd,Guangzhou 510635,China)
出处
《吉林水利》
2024年第7期41-46,共6页
Jilin Water Resources
关键词
冲刷深度
穿河隧道
网河区
河床演变
Scouring depth
Cross-river tunnel
Channel network system
Riverbed evolution
