發(fā)布時間：2018-02-02 09:28

  本文關(guān)鍵詞： 護坡 抗沖蝕能力 加筋草皮 背水坡 越浪 土工織物　出處：《水利水運工程學(xué)報》2016年01期 　論文類型：期刊論文

【摘要】：在臺風(fēng)和寒潮等極端事件條件下海堤背水坡易受到越浪和溢流的侵蝕作用,海堤背水坡的保護越來越受到重視;同時人們對海岸工程也提出了更多的生態(tài)和景觀要求。加筋草皮作為一種新興的護坡方式,發(fā)揮了土工織物防沖固草和草根系固土的作用,既提高了植被護坡的抗水力侵蝕能力,也滿足生態(tài)功能。為研究背水坡加筋草皮的護坡性能,基于室內(nèi)水槽試驗,探究了不同加筋草皮方式在背水坡遭受高速持續(xù)水流沖刷和越浪水體斜向沖刷兩種作用下抗侵蝕性能。試驗結(jié)果表明:不同方式的加筋草皮抗侵蝕有差異,抗侵蝕性能由強到弱為三維土工網(wǎng)墊與土工格柵聯(lián)合加筋、三維土工網(wǎng)墊土工格柵天然草皮。相同流量下卷破波斜向沖刷作用下較持續(xù)水流正向沖刷破壞更為強烈。
[Abstract]:Under the conditions of extreme events such as typhoon and cold tide, the backwater slope of seawall is easy to be eroded by surpassing waves and overflow, and the protection of backwater slope of seawall is paid more and more attention. At the same time, more ecological and landscape requirements have been put forward for coastal engineering. As a new way of slope protection, reinforced turf plays the role of geotextile anti-scour and grass root system. It not only improves the hydraulic erosion resistance of vegetation slope, but also meets the ecological function. In order to study the slope protection performance of backwater slope reinforced turf, based on indoor flume test. In this paper, the anti-erosion performance of different reinforced turf under the action of high speed and continuous water flow on backwater slope and oblique erosion of overflowing water was investigated. The results showed that there were differences in erosion resistance between different ways of reinforced turf. The anti-erosion performance from strong to weak is three dimensional geotextile mesh cushion and geogrid combined reinforcement. Three-dimensional geotextile net cushion geogrid natural turf. Under the same flow rate, the damage is stronger than that of continuous flow under the action of oblique scouring of broken wave.
【作者單位】： 河海大學(xué)水文水資源與水利工程科學(xué)國家重點試驗室;河海大學(xué)港口海岸與近海工程學(xué)院;
【基金】：國家自然科學(xué)基金資助項目(51309092) 江蘇省自然科學(xué)基金資助項目(BK20130833)
【分類號】：U656.314
【正文快照】： 1研究背景海堤是為防御風(fēng)暴潮水和波浪對防護區(qū)的危害而修筑的堤防工程,是沿海地區(qū)人類生命及財產(chǎn)安全的重要屏障,海堤的潰決和破壞將導(dǎo)致嚴重后果。風(fēng)暴潮越過堤防和防洪墻后產(chǎn)生沖刷,隨后導(dǎo)致堤防和防洪墻破壞和決口。由強風(fēng)暴引起的特大海岸災(zāi)害中,很大一部分海堤潰決都是，

本文編號：1484190