In this paper, some characteristics of flow movement and sediment transport are analyzed by using the flume experiment data. the cross section of compound channel can be divided into four regions : the undisturbed region in main channel, the interactive region between channel and plain, the undisturbed region in flood plain and the boundary region. in the undisturbed regions, the distribution of longitudinal velocity along the depth has the feature of lograithmic. whereas, in the interactive region, the longitudinal velocity does not obey the logarithmic distribution law, but it can expressed as a revised logarithmic function by using a wake function. on the basis of the kinematic equation the velocity distribution of transverse velocity is obtained. in the boundary region, the longitudinal velocity obeys the law of parabolic distribution. furthermore, according to the simplified diffusion equation, the transverse distribution of sediment concentration in the interactive region is deduced. the analysis is in good agreement with the measured data
本文根據漫
灘水流的運動特點,將漫
灘水流的復式斷面分為主槽平衡區、
灘槽交互區、
灘地平衡區及邊壁區等4個區,並給出了各區寬度的經驗公式.根據
灘槽交互區垂線流速分佈的變化特點,提出了附加
尾流函數的對數流速分佈公式.在簡化水流運動方程和泥沙擴散方程的基礎上,對
灘槽交互區內垂線平均流速及含沙量沿橫向分佈進行了理論分析,提出了反映
灘槽水流動量交換強度的橫向渦量粘性系數及橫向擴散系數的表達式,得到了漫
灘水流垂線平均流速及含沙量沿橫向分佈的解析解,並與實測資料吻合較好
Beach honey final contest is getting close
本年度沙
灘寶貝評選活動終于接近
尾聲了!
Improvement to hong kong stadium, improvement to hong kong squash centre, improvement to lai chi kok park sports centre, improvement to western park sports centre, improvement to shek kip mei park sports centre, improvement to siu sai wan sports ground, improvement to stanley main beach water sports centre, improvement to tseung kwan o sports centre and improvement to king s park hockey ground
香港大球場改善工程香港壁球中心改善工程荔枝角公園體育館改善工程西區公園體育館改善工程石硤
尾公園體育館改善工程小西灣運動場改善工程赤柱正
灘水上活動中心改善工程將軍澳體育館改善工程及京士柏曲棍球場改善工程
Shanwei city has rich natural resources. in the districts under its jurisdiction, there are 17 species of 6 kinds of minerals, of which tin, granite, kaolin, pyrite, glass sand and mineral water are of high quality and quantity, worth exploration and use
汕
尾市有礦產資源6類17種,其中錫礦、硫鐵礦、花崗巖、石英沙、高嶺土及礦泉水等量多質優,具有良好的開發利用價值;沿海可供海水養殖的淺海
灘塗面積3
This paper analyzes ordinary accidents and effective disposal measures of the tailing dam, introduces the engineering concrete example of high pressure jer grouting techniqe, which has been adopted by province of disposing seepage of the tailing dam in yun - nan
摘要介紹了雲南王家
灘鐵礦蘆灣箐
尾礦壩存在故隱患,採用高壓定噴技術構築內防滲墻,對基礎壩進行止漏和加固處理,消除隱患這一工程實際問題。
The afcd has started to deploy artificial reefs at outer port shelter and long harbour to help protect these important nursery areas and enhance fisheries resources
署方開始在外牛
尾海及大
灘海水域敷設人工魚礁,以保護這兩個重要魚類育苗區和增加香港水域的漁業資源。
Friday, july 27, 2001 the executive council has authorised the deployment of artificial reefs in outer port shelter and long harbour to help protect important nursery areas and enhance fisheries resources
行政會議通過在外牛
尾海及大
灘海水域敷設人工魚礁的建議,以保護這兩個重要的魚類育苗區和增加香港水域的漁業資源。
" with the completion of the second phase artificial reef deployment in nursery and spawning grounds in long harbour and outer port shelter, we are confident that fisheries resources in these areas and nearby areas will keep increasing, " the spokesman said
署方已完成大
灘海和外牛
尾海兩個魚類產卵和育苗場的人工魚礁敷設工程,我們有信心在這兩個地區及其鄰近水域的漁業資源會持續增加。
Environmental cleaning expenses for houlung shiwei beach, waihpu harbor, and tunghsiao chiumaoyuan beach
后鎮水
尾海水浴場外埔漁港通宵鎮秋茂園之海
灘環保凈
灘費用14 , 400
Sheung ko tan street, chung mei village, tsing yi
青衣涌
尾村上高
灘街
" the proposed areas for deploying artificial reefs in outer port shelter and long harbour are important nursery and spawning grounds. selection of these areas, after extensive consultation, is supported by some environmental groups, the sai kung north rural committee and the majority of non - trawl fishers that operate there, " the spokesman said
漁護署提議在外牛
尾海及大
灘海敷設人工魚礁的地點均為重要的產卵及育苗場。經廣泛諮詢后,這兩個建議的地點均獲環保團體、西貢北鄉事委員會及大多數在區內作業的非拖網漁民支持。
The first phase, with 28, 000 cubic metres of artificial reefs deployed in yau chau tong and hoi ha wan marine parks, was completed in 1999. " the second phase, which involves deployment of artificial reefs in two known spawning and nursery grounds in long harbour and outer port shelter, commenced in september 2001. about 129, 000 cubic metres were deployed in the two areas, " an afcd spokesman said today ( october 25 )
漁護署發言人今日(十月二十五日)表示:第二期工程在二一年九月展開,署方在大
灘海和外牛
尾海兩個已知的重要魚類產卵和育苗場,敷設體積約十二萬九千立方米的人工魚礁。
Bodily form optimum for bottom branch pipe in tail water surge chamber of goupitai hydropower station
構皮
灘水電站
尾水調壓室底部岔管體型優化
A moonlight strollw on the beach sounds like a great way to end the evening
在灑滿月光的海
灘上散步,以次作為這個晚上的結
尾曲,這聽起來很棒。
Margaritas, the two of us on a beach alone, sunset
喝雞尾酒,就我們兩個在海灘上看日落