【摘要】：水力插板透水丁壩是一種新型丁壩。以水力插板透水丁壩群、井柱樁透水丁壩群和實(shí)體丁壩群為研究對(duì)象進(jìn)行動(dòng)床模型試驗(yàn)。先測(cè)定各丁壩壩前和壩后各5 cm橫斷面上測(cè)點(diǎn)的流速,再用每個(gè)測(cè)點(diǎn)的流速算出平均流速,通過(guò)對(duì)比橫斷面的平均流速來(lái)判斷各丁壩群減緩流速的差異性,并詳細(xì)分析和解釋其減緩流速差異性產(chǎn)生的機(jī)理。研究發(fā)現(xiàn):水力插板透水丁壩群和井柱樁透水丁壩群流速的減少率和減少量同實(shí)體丁壩群相比,分別提高了34%,23%和107%,84%。流速減緩會(huì)影響丁壩的局部沖刷和壩后淤積,再對(duì)各丁壩群附近的地形進(jìn)行測(cè)量,并用surfer8.0繪制了各丁壩群附近的地形圖。結(jié)果發(fā)現(xiàn):實(shí)體丁壩群的局部沖刷情況最為嚴(yán)重,壩后淤積范圍最小;水力插板透水丁壩群的局部沖刷情況最不嚴(yán)重,壩后淤積范圍最大;井柱樁透水丁壩群的局部沖刷情況和壩后淤積范圍介于兩者之間。
[Abstract]:Hydraulic plug plate permeable spur dike is a new type of dike. The dynamic bed model tests were carried out with hydraulic plug plate permeable spur dike group, well column pile permeable spur dike group and solid spur dike group as research objects. The velocity of measured points in front of each spur dam and 5 cm after dam was measured, then the average velocity of velocity was calculated by using the velocity of each measuring point, and the difference of deceleration velocity of each group of spur dikes was judged by comparing the average velocity of cross section. The mechanism of slowing the difference of velocity is analyzed and explained in detail. The results show that the velocity reduction rate and decrease amount of hydraulic plug plate permeable spur dike group and well pillar pile permeable spur dike group are increased by 3423% and 107%, respectively, compared with that of solid dike group. The local scour and siltation behind the spur dike will be affected by the slow flow velocity. The topography near each spur group is measured and the topographic map near the spur dike group is plotted by surfer8.0. The results show that the local scour of solid groin group is the most serious, and the area of sedimentation behind dam is the smallest, the local scour of hydraulic plug plate permeable spur dike group is the least serious, and the area of sedimentation behind dam is the largest. The local scour of well pile permeable spur dam group and the sedimentation range behind the dam are between them.
【作者單位】： 新疆農(nóng)業(yè)大學(xué)水利與土木工程學(xué)院;
【基金】：國(guó)家自然科學(xué)基金項(xiàng)目(51469032) 新疆高�？蒲杏�(jì)劃項(xiàng)目(XJEDU2013I12) 新疆水利水電工程重點(diǎn)學(xué)科基金資助項(xiàng)目(xjzdxk-2010-02-12)
【分類號(hào)】：TV863

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