Influence of weft yarn diameter on runoff erosion control performance of woven geomesh

ABSTRACT

The performance of geomeshes used in runoff erosion control application is expected to improve as weft yarn diameter increases. In this study coir and jute geomeshes with different weft yarn diameter are subjected to runoff erosion tests in zero infiltration and soil infiltration conditions (i.e. without and with soil), at three different slope angles of 15°, 30º and 45°. Germination test is performed according to ASTM standard D 7322, using earthen pots and wheat seeds. Increased weft yarn diameter results in improved performance of coir and jute geomeshes at all slope angles and soil-infiltration conditions, due to increased storage volume, except coir geomesh at steeper slope angles. In germination test, increase in weft yarn diameter results in improved average number of roots; but, the percentage of vegetation and average length of roots are found to reduce.

摘要

随着径径的增加，用于径流侵蚀控制应用的土工网性能有望得到改善。在这项研究中，椰壳纤维和黄麻土工网格与不同的纬纱直径为零的入渗和土壤入渗条件下径流冲刷试验（即没有和土壤），在15°三倾斜角度不同，30和45°º。发芽试验是根据ASTM标准D 7322，使用砂锅和小麦种子进行的。增加纬纱直径结果改进的椰壳纤维和黄麻土工网格的性能在所有的坡度和土壤入渗条件下，由于增加了存储容量，除了地理网格在陡峭的坡角棕。在发芽试验中，纬纱直径的增加，使根的平均数量增加，但植被的百分比和根的平均长度被发现减少。

KEYWORDS:

• Geomesh
• weft yarn diameter
• runoff erosion
• erosion control performance
• soil-infiltration conditions
• germination test

关键词:

• 关键词
• 土工网
• 纬纱直径
• 径流侵蚀
• 防蚀性能
• 土壤入渗条件
• 发芽试验

Acknowledgments

The authors are grateful to MHRD, New Delhi, India.