Research on the Rainwater Erosion Prevention Mechanism of Earthen Sites with Origin

Abstract

Purposes Origin software was adopted to study the mechanism and final effects of rainwater erosion prevention of Earthen Sites with bare soil and herbs in Western Wall of Jinyang Ancient City. Methods The data analysis method of field artificial simulation rainfall experiment through the software of Origin was used to compare the effects of the underlying surface layer on the runoff and sediment producing processes on the slope surface at different times. Findings Pre-runoff interception Q0 of Fresh Herbs was negatively correlated with runoff starting time T0. And Q0 was in descending order of Dry Herbs, Fresh Herbs, and Bare Soil. Sediment producing coefficient Csy and sediment producing intensity Isy of Fresh Herbs were positively correlated with rainfall intensity Irf. Runoff coefficients Cro and Csy were in descending order of Bare Soil, Dry Herbs, and Fresh Herbs. By forming a mud surface, exposed earthen sites were less affected by rainwater infiltration, making them suitable for arid climate zones. By strengthening anti-erosion, herbal earthen sites reduced soil surface erosion, making them suitable for semi-arid and semi-humid climate areas. Conclusions Origin analysis confirms that herbal plants have a significant effect on improving the anti-erosion of earthen sites. The phenomenon of herbs covering is beneficial to the protection of local earthen sites in Shanxi. However, when extreme sustained heavy rainfall occurs between September and October, further research is needed to determine whether herbal plants are suitable or not for covering earthen sites.

Keywords

• origin software
• earthen sites
• heavy rainfall
• erosion
• rainwater
• herbs