block cross-section 中文意思是什麼
block cross-section
解釋
塊料截面-
In this thesis, first, reasons and factors for the stability of loose rock dams were summarized according to the field surveys and certain expert ' s experiences. then, researches on block stability problems were reviewed, and according to the relationship between grain size and incipient velocity, it is found that the block weight is in direct proportion to 6 - 9 power of incipient velocity, and 50 % increase of the velocity will result in about 40 times change of the block weight. after that, experiments were conducted in a flume, focusing on the relationship between incipient velocity and some main factors including block weight, water depth over the dam, cross - section size, block material and river bed material
本文首先根據散拋石壩損毀情況的現場調查資料，結合有關專家多年的整治經驗，總結出壩體的損毀原因及影響因素；對現有塊體穩定性的研究成果進行回顧和總結，並針對散拋石壩的直接損毀現象，結合山區河流的水流、地形特點，利用塊體粒徑與起動流速的關系，提出塊體穩定重量與起動流速高次方成正比的概念，流速50的增長可能導致塊體穩定重量接近40倍的變化；通過二維變坡水槽試驗，研究了壩體穩定的主要影響因素，包括塊體重量、壩頂水深、斷面尺寸、塊體材料（塊石和卵石兩種） 、護底等，結果表明對于山區河流，試圖僅僅通過增加壩體單個塊體重量或斷面尺寸來提高壩體穩定性效果甚微；最後，根據西部地區的自然、經濟、交通等條件，提出可以採用柔性混凝土鉸鏈體等一類整體性較好的護面層作為散拋石壩的防沖毀措施，以期取得良好的工程效果。 -
A study on the structural deformation of a special dam body with a comprehensive analysis method is presented, by taking section 33 of the qingtongxia dam as an example. the dam block is located at the abutment on the right bank, like an “ earth - retaining wall ”, whose cross section is “ high - heeled shoe ” sheped. because of the special structure and load condition, its deformation toward the downstream is large. deep research of its deformation law is conducted, and analysis of the special structure, the boundary condition of this dam block is performed, and the physical genesis of the large deformation of the dam block is revealed
以青銅峽大壩33壩段為例，提出應用綜合分析法研究特殊壩體結構的變形規律.該壩段位於右岸壩頭，類似一「擋土墻」 ，斷面形狀如「高跟鞋」 .由於結構及受力條件特殊，產生了向下游的較大變形.本文應用綜合分析法（多種模型分析、結構計算等）對其變形規律進行了全面的分析研究，並重點對該壩段的特殊結構和邊界條件進行深入分析研究，弄清了該壩段向下游有較大變形的物理成因
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