海州灣沙灘修復(fù)整治效果研究
發(fā)布時(shí)間:2018-04-05 05:34
本文選題:西墅 切入點(diǎn):沙灘養(yǎng)護(hù) 出處:《南京師范大學(xué)》2015年碩士論文
【摘要】:沙灘作為經(jīng)久不衰的旅游休閑資源受到民眾的追捧。沿海經(jīng)濟(jì)的大規(guī)模開(kāi)發(fā)導(dǎo)致海岸帶水動(dòng)力變化,海岸帶地貌也隨之改變。江蘇省海州灣擁有省內(nèi)稀缺的基巖砂質(zhì)岸段,發(fā)育多個(gè)小規(guī)模海濱浴場(chǎng),但受到海岸工程建設(shè)的影響,多個(gè)沙灘發(fā)生退化。海州灣西墅灣地區(qū)原為海濱浴場(chǎng),東西連島西大堤竣工后改變?yōu)硟?nèi)水動(dòng)力條件,導(dǎo)致浴場(chǎng)淤積深厚、泥化報(bào)廢。近年來(lái)西墅周邊新城區(qū)建設(shè)和海州灣海洋公園成立為西墅沙灘修復(fù)提供了機(jī)會(huì)。西墅沙灘修復(fù)整治工程以沙灘修復(fù)為重點(diǎn),輔以景觀設(shè)計(jì)和基礎(chǔ)設(shè)施建設(shè),將西墅沙灘打造為新城區(qū)公共休閑海灘、高檔居住區(qū)外環(huán)境以及市政道路附屬綠道公園。為了解修復(fù)沙灘的演變過(guò)程,自2014年8月至2015年3月共開(kāi)展了三次沙灘地形測(cè)量和沉積物采樣。不同時(shí)期的地形資料對(duì)比分析表明,西墅沙灘經(jīng)過(guò)人工填沙修復(fù)后,沙灘地形處于變化過(guò)程中,8月到11月人工填沙區(qū)中部向海淤進(jìn),而東西岬角略有侵蝕;11月至次年3月間,受冬季較強(qiáng)水動(dòng)力作用,填沙區(qū)整體發(fā)生向岸侵退,與竣工后地形基本相吻合,沙灘地形整體較穩(wěn)定,且在自我調(diào)整中不斷適應(yīng)當(dāng)?shù)厮畡?dòng)力,人工填沙區(qū)高程3-6m的灘面基本穩(wěn)定。人工填沙區(qū)以砂質(zhì)沉積物為主,填沙區(qū)和自然岸灘交界處沉積物為粉砂質(zhì)砂,且范圍隨時(shí)間不斷擴(kuò)大,表明人工填沙養(yǎng)護(hù)以后,部分砂質(zhì)受潮汐波浪作用流失到自然灘面,使得自然灘面區(qū)砂質(zhì)含量升高,但砂質(zhì)岸灘總體依然較穩(wěn)定。地形對(duì)比和沉積物粒度分析表明,西墅沙灘修復(fù)工程總體效果良好,沙灘形態(tài)和砂質(zhì)品質(zhì)較穩(wěn)定,景觀多樣性增加,公共基礎(chǔ)設(shè)施更完善,但工程竣工后的管理仍要加強(qiáng),定期進(jìn)行灘面垃圾清理工作,維護(hù)修復(fù)總體效果。
[Abstract]:Beach as a lasting tourist leisure resources by the public.The large-scale development of coastal economy leads to the hydrodynamic change of coastal zone and the change of coastal geomorphology.The Haizhou Bay of Jiangsu Province has the scarce bedrock sandy shore section in the province, and has developed many small scale beach baths, but under the influence of the coastal engineering construction, many beaches have been degraded.The area of Xishu Bay in Haizhou Bay used to be a beach beach. After the completion of the west embankment of the east and west islands, the hydrodynamic conditions in the bay were changed, which resulted in the deep deposition of the bathhouse and the scrapping of mud.In recent years, the construction of new urban area around the villa and the establishment of Haizhou Bay Ocean Park provide opportunities for the restoration of Xishu beach.The Xishu beach restoration and renovation project focuses on the beach restoration, with landscape design and infrastructure construction. The Xishu beach is made into a public leisure beach in the new urban area, the outer environment of the upscale residential area and the green road park attached to the municipal road.To understand the evolution of beach restoration, three beach topographic surveys and sediment samples were conducted from August 2014 to March 2015.The comparative analysis of topographic data in different periods shows that the beach topography is in the process of change after artificial sand filling and restoration, the middle part of the artificial sand filling area silts into the sea from August to November, and the east and west headland is slightly eroded; from November to March of the following year,Due to the strong hydrodynamic effect in winter, the whole sand filling area is invaded and retreated to the shore, which basically coincides with the topography after completion, and the beach topography is stable, and adapts to the local hydrodynamic force in self-adjustment.The beach surface with a height of 3-6 m in artificial sand filling area is basically stable.The artificial sand filling area is dominated by sandy sediment, and the sediment at the junction between the sand filling area and the natural shoal is silty sand, and the range is expanding with time, which indicates that after artificial sand filling and conservation, part of sand is lost to the natural beach surface by tidal wave action.The sand content in the natural beach area is increased, but the sandy shoal is still stable.Terrain comparison and sediment granularity analysis show that the overall effect of Xishu beach restoration project is good, the sand beach shape and sand quality is stable, the diversity of landscape is increased, the public infrastructure is more perfect, but the management after the completion of the project should be strengthened.Regular beach surface garbage cleaning work, maintenance and repair of the overall effect.
【學(xué)位授予單位】:南京師范大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2015
【分類號(hào)】:P748
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