加筋麦克垫在护滩工程中的应用及施工质量控制

在长江下游马当南水道航道整治工程中,洲滩下游段守护首次采用了新型的加筋麦克垫。普通三维网垫在抵抗水流冲蚀应用时,通常在防护性能发挥到极限前,就会出现材料破坏(如撕裂)的情况。根据马克菲尔集团与美国犹他州立大学的试验研究,发现通过高强度钢丝网加筋的三维网垫,其材料自身抵抗破坏的性能有显著提高,能够保证材料的冲蚀防护性能得以发挥。除此之外,其自身的稳定性也是保证防护性能的关键。针对加筋麦克垫质量轻的特点,在基床整平、网垫锚固以及搭接绞合等方面进行了严格的施工质量控制,保证加筋麦克垫在护滩工程中首次应用就取得了良好的防护效果。

Application and construction quality control of Macmat-R in beach protection project

Macmat-R was first applied to the beach protection of Madangnan Waterway Regulation Engineering of the Yangtze River. The normal geomat is frequently damaged before its protection performance limit is reached, when applied in the water erosion control. According to the research of Maccaferri Group and Utah State University, when geomat is reinforced with wire mesh, the damage resistance can be significantly improved and the performance of the geomat can be fully played. Apart from this, the beach protection also depends on the stability of Macmat-R. Due to the light weight of the Macmat-R, the quality control on the bed flattening, intermediate pinning, overlay and lacing should be kept strictly. A satisfactory effect has been achieved at the very first application.