XIAO Jian-fang,ZHANG Hong-jiang,JIANG Yu-lin,et al.The Characteristics of Detritus Erosion of Spoil Ground of the West of Hurong Expressway[J].Research of Soil and Water Conservation,2007,14(03):121-123.
沪蓉西高速公路弃土场渣体侵蚀特征——以宜(昌)至长(阳)段为例
- Title:
- The Characteristics of Detritus Erosion of Spoil Ground of the West of Hurong Expressway
- Keywords:
- expressway; spoil ground; detritus erosion; gully erosion
- 分类号:
- U411;S157
- 摘要:
- 随着我国高速公路的迅速发展，由此形成的水土流失已成为突出的环境问题.为探讨高速公路建设期间弃土场渣体侵蚀规律，在沪蓉西高速公路宜长段Ⅰ标区弃土场布设观测小区进行定位观测和分析研究.结果表明：(1)降雨量与弃土场渣体侵蚀量呈显著的正相关关系.在不考虑影响坡面渣体侵蚀其它因素前提下，随降雨量的增大，渣体侵蚀量逐渐加大.(2)研究区堆渣体沟蚀发生严重，局部坡面渣体侵蚀量高达92 848 t/km2.调查发现沟深下切深度基本在40 cm以内，受坡面汇水面积影响，从坡上到坡脚，堆渣侵蚀量逐渐加大.
- Abstract:
- The fast development of expressway has led to serious soil erosion and water loss,which has become the outstanding environment problem.An observation plots is allocated in the spoil ground in Hurong west expressway so as to study the characteristics and process of detritus erosion during the construction of expressway.The result shows as following.The prepicitation and the erosion intention present a significantly positive relation.The more the prepicitation is,the stronger the intension of soil erosion is without taking other factors into consideration.(2)Gully erosion is serious in the experimental area,of which the amount of detritus erosion can reach 92 848 t/km2.It is found the erosion length is almost within 40 cm,which is increasing from the top slope to the bottom slope based on the size of the catchment.
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备注/Memo
收稿日期:2006-5-24
基金项目:交通部西部交通科技项目"公路与生态工程技术研究(20033182233)"的部分研究内容
作者简介:肖建芳(1981- )，女，北京林业大学水土保持学院在读硕士生;