海堤背水坡加筋草皮抗冲蚀能力试验研究

发布时间：2018-02-02 09:28

  本文关键词： 护坡 抗冲蚀能力 加筋草皮 背水坡 越浪 土工织物　出处：《水利水运工程学报》2016年01期 　论文类型：期刊论文

【摘要】：在台风和寒潮等极端事件条件下海堤背水坡易受到越浪和溢流的侵蚀作用,海堤背水坡的保护越来越受到重视;同时人们对海岸工程也提出了更多的生态和景观要求。加筋草皮作为一种新兴的护坡方式,发挥了土工织物防冲固草和草根系固土的作用,既提高了植被护坡的抗水力侵蚀能力,也满足生态功能。为研究背水坡加筋草皮的护坡性能,基于室内水槽试验,探究了不同加筋草皮方式在背水坡遭受高速持续水流冲刷和越浪水体斜向冲刷两种作用下抗侵蚀性能。试验结果表明:不同方式的加筋草皮抗侵蚀有差异,抗侵蚀性能由强到弱为三维土工网垫与土工格栅联合加筋、三维土工网垫土工格栅天然草皮。相同流量下卷破波斜向冲刷作用下较持续水流正向冲刷破坏更为强烈。
[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.
【作者单位】： 河海大学水文水资源与水利工程科学国家重点试验室;河海大学港口海岸与近海工程学院;
【基金】：国家自然科学基金资助项目(51309092) 江苏省自然科学基金资助项目(BK20130833)
【分类号】：U656.314
【正文快照】： 1研究背景海堤是为防御风暴潮水和波浪对防护区的危害而修筑的堤防工程,是沿海地区人类生命及财产安全的重要屏障,海堤的溃决和破坏将导致严重后果。风暴潮越过堤防和防洪墙后产生冲刷,随后导致堤防和防洪墙破坏和决口。由强风暴引起的特大海岸灾害中,很大一部分海堤溃决都是，

本文编号：1484190