特拉锚垫防护下土质岸坡的抗波浪侵蚀能力研究  

Wave erosion resistance of soil bank slope under protection of terra block mat

作　　者：曾施雨 彭力 王硕 付旭辉[4] ZENG Shiyu;PENG Li;WANG Shuo;FU Xuhui(Changjiang Chongqing Harbor and Waterway Engineering Investigation and Design Institute,Chongqing 401147,China;Changjiang Yichang Waterway Engineering Bureau,Yichang 443003,China;Hebei University of Water Resources and Electric Engineering,Cangzhou 061016,China;Chongqing Jiaotong University,Chongqing 400074,China)

机构地区：[1]长江重庆航运工程勘察设计院,重庆401147 [2]长江宜昌航道工程局,湖北宜昌443003 [3]河北水利电力学院,河北沧州061016 [4]重庆交通大学,重庆400074

出　　处：《水运工程》2024年第3期82-86,共5页Port & Waterway Engineering

基　　金：国家重点研发计划项目(2018YFB1600400);交通运输部重点水运科技项目(KY2021-02)。

摘　　要：三峡库区消落带水土流失造成局部河段河势明显变化,影响船舶通航安全。波浪侵蚀是库区岸坡水土流失的主要原因之一。为进一步探索库区消落带岸坡的有效防护技术,开展水槽试验研究新型生态护坡结构特拉锚垫的抗波浪侵蚀能力,采用针测法测量计算土壤侵蚀程度和压力传感器测量波浪压力。结果表明,相较于裸土无防护情况下,不同工况下的特拉锚垫防护段的相对侵蚀量仅为19.71%~35.89%;在波高4 cm、周期1.37 s的波浪作用下,特拉锚垫均对波浪有不同程度的减弱作用,其中坡度25°时,减弱作用最明显,波浪压力减小20.46%。特拉锚垫具有较好的抗波浪侵蚀能力,可用于实际工程进一步开展研究。The water and soil erosion in Three Gorges Reservoir area fluctuation zone has caused significant changes in the river regime in some sections,affecting the safety of ship navigation.Wave erosion is one of the main causes of soil erosion on the bank slopes of the reservoir area.To further explore effective protection technologies for the bank slope of the reservoir area s fluctuation zone,a flume test is conducted to study the wave erosion resistance of a new ecological slope protection structure,the terra block mat.The degree of soil erosion is calculated through needle measurement and wave pressure is measured by pressure sensors in this test.The results indicate that compared to the unprotected bare soil,the relative erosion of the protective section of the terra block mat under different working conditions is only 19.71%to 35.89%.Moreover,under the action of waves with a wave height of 4 cm and a period of 1.37 s,the terra block mat has varying degrees of weakening effect on the waves,with the most obvious weakening effect at a slope of 25°,and the wave pressure decreases by 20.46%.The terra block mat has good resistance to wave erosion and can be used for further research in the practical engineering.

关 键 词：特拉锚垫 波浪侵蚀 侵蚀强度 

分 类 号：U617[交通运输工程—船舶及航道工程]