Theory and practices of Indian bunding technology-graded bunds

Bund is a low-cost engineering measure used worldwide to prevent soil erosion.Graded bund is the main type of bunding technology,which is built on a graded contour line with a pre-determined longitudinal grade in order to discharge runoff water from this area.As one of the earliest countries widely using the bunding technology,India's bunding technology is relatively perfect.This paper introduced the characteristics,applicability,the main application areas of graded bunds in India,expounded the computation method of important parameters such as height and cross-sectional area of graded bund,volume of earthwork and cost of construction; in addition,demonstrated the calculation process of parameters through practical case; and also briefly introduced operating hints and points for attention in field construction,which would be expected to enlighten and promote the design and extension of the bund technology in China in the future.