武汉汉江过江隧道河床演变及最大冲深预测  

Fluvial process and prediction of maximum erosion depth of riverbed in tunnel location across Hanjiang River

作　　者：岳红艳[1] 谷利华[1] 张杰[1] 

机构地区：[1]长江科学院河流所,湖北武汉430010

出　　处：《人民长江》2010年第6期35-39,共5页Yangtze River

摘　　要：分析了汉江第一越江隧道工程段(黄金口-南岸嘴)近期河道演变特点和隧址断面多年实测冲淤变化规律,同时,结合河工模型试验和水沙数学模型计算成果,预测了不利水文条件下隧址断面河床的最大冲深。成果表明:在相同不利水沙组合条件下,河工模型和数学模型模拟的隧址断面河床最深点高程在定性上基本一致,河床最低点高程分别为-0.10、-0.23 m。经与地质勘测资料对比分析可知,预测最深点高程基本合理,可为设计部门提供重要的参考依据。We mainly analyze the characteristics of recent fluvial process and regularity of erosion and deposition of riverbed in the section from Huangjinkou to Nan＇anzui. We predict the maximum erosion depth of riverbed in the tunnel location under the adverse flow and sediment condition using mathematical and physical models. The results of mathematical model are consistent with those of physical model under the same flow and sediment condition. The maximum elevation values of the lowest point of ri- verbed are -0.10 m and -0.23 m respectively. The comparison of research results with the geologic drilling data shows that the predicted maximum erosion depth is reasonable, which can be referred by the design department.

关 键 词：河床演变 隧址 最大冲深 数学模型 河工模型 

分 类 号：U45[建筑科学—桥梁与隧道工程]