bed armoring

Research and Implementation of Dynamic Updating and Spatial Analysis of Yangtze River Riverbed;

长江河床动态更新及空间分析的研究与实现

Author especially mentions the application of soundless breaking agent to break rock in riverbed to ensure the safety and reliability of construction.

对玉门沟油库穿越河床段输油管道从施工准备到施工方法上进行了详细论述 ,并对施工的整个过程由修筑临时道路到管道沟槽开挖。

According to the calculation results of general erosion of riverbed of bridge,this paper analyzes the impact of the main parameters in the formula to general erosion,gives the scope of application and defects of that formula,and proposes a suggestion on determination of general erosion depth.

根据桥位河床的一般冲刷计算成果,分析计算公式中主要参数对一般冲刷的影响,指出公式的适用范围和不足,提出确定一般冲刷深度的建议。

Observation and analysis of the river bed scour behind the third dam of Gutianxi;

古田溪三级大坝下游河床冲刷原型观测与分析

This paper studied the formation of recent three strata underlying the river bed in the reaches from Taiqian of Henan to Weishan of Shandong according to the stratigraphic analysis and soil tests.

通过地层分析和室内土工试验等方法,研究了黄河下游河南台前至山东位山河段近代河床下伏的三层地层的成因,研究结果表明:上部黄色砂壤土层系1855a黄河铜瓦厢发生大改道后黄河新近冲洪积沉积物;中部黑色粘土层为湖积沉积物;下部黄色壤土层系古黄河冲洪积沉积物。

Based on analysis about the situation of exploiting sand in recent ten years and the field data of river topography in recent thirty years in Fuyang reach of Fuchun River,the authors find that massive and irregular exploiting sand from the river bed has caused new problems.

根据钱塘江富春江富阳河段近 1 0年的采砂情况和近 30年的河道实测资料分析 ,发现大规模和无序采砂使得河床严重变形 ,纵剖面形成过度下凹型形态 ,影响到河势稳定。

Measurement in situ of streambed hydraulic conductivities in the Platte River, Nebraska;

美国内布拉斯加州普拉特河河床沉积物渗透系数的现场测定

Measurement of streambed hydraulic conductivity and anisotropy analysis;

河床水力传导度及其各向异性的测定

This paper designed experiment installation to study the environmental behaviors of NH~+_4N in the vertical river bank filtration system.

27 mg/L的氯化铵溶液为淋滤液,模拟氨氮在垂向河床中的渗滤过程,来探讨氨氮在垂向河床渗滤系统中的环境行为,借以了解河床渗滤系统对氮污染的净化机理。