介绍长江口深水航道治理一期工程北导堤袋装砂堤心斜坡堤的设计与施工。
The design and construction of the sloping- faced north leading dike with bagged- sand core for the 1st phase of the Yangtze Estuary deepwater channel regulation project are introduced.
此种新型护坡结构可避免传统混凝土预制板护坡的某些弊端，为砂堤护坡工程提供了具有实用价值的推广方案。
This new kind of slope protection can avoid some defects of traditional concrete prefabricated components and is worth of being spread in grit slope protection.
由于砂垫层的应力扩散作用，加筋砂垫层减小了堤底的不均匀沉降。
Because of the stress diffusivity, reinforced sand blankets decreased the differential settlement on the bottom of the embankment.
分析了曲堤油田防砂及解堵过程中的经验教训及要解决的关键技术问题；
This thesis chiefly analyses the experience and lessons in the course of sand exclusion and plugging removing in quit oilfield.
主要沉积微相为水下分流河道、河口坝、远砂坝、席状砂、天然堤、决口扇等。
The main sedimentary microfacies comprise distributary channel, mouth bar, distal bar, blanket sand, natural levee and crevasse splay.
在研究区识别出水下分流河道、河口砂坝、水下堤泛沉积、分流间湾四种微相。
Recognize four kinds of microfacies in research area, including underwater distributive river course, estuarine bar, etc.
均质各向同性砂砾石堤基渗漏涌砂可归纳为完整井和非完整井模型。
The seepage and boiling of sand on the uniform isotropic gravel base of dam can be reduced to completely penetrating well and nonpenetrating well model.
当三层堤基浅砂层较薄时，将发生深层管涌破坏，管涌破坏区涉及浅砂层及下部砂砾石层，其宽度和深度较双层堤基大，出口涌砂量也较多。
But for triple stratum foundation, if the top sand layer is relatively thin, piping is vertical. The damage zones are large in width and depth that expand to the sand layer and gravel layer.
上述阶地、沙嘴和湖岸堤的沉积物主要由磨圆度和分选性较好的砂或砂砾石组成。
The land spit and lake terrace are formed by the sand and grit which have good polish and select.
天然堤、决口扇、溢岸砂多为含泥粉砂、粉砂质泥和纯泥，很难成为有效储层。
The natural levee, crevasse splay and overbank sand are difficult to be effective reservoir for their content of mud-bearing silt, silty mud and unmixed mud.
天然堤、决口扇、溢岸砂多为含泥粉砂、粉砂质泥和纯泥，很难成为有效储层。
The natural levee, crevasse splay and overbank sand are difficult to be effective reservoir for their content of mud-bearing silt, silty mud and unmixed mud.
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