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EVALUATION OF SLOPE STABILIZATION METHODS (US 40 BERTHOUD PASS).
| 题名： | EVALUATION OF SLOPE STABILIZATION METHODS (US 40 BERTHOUD PASS). |
| 作者： | Banovich-M; Outcalt-W |
| 关键词： | Altitude-; Cut-slopes; Erosion-control; Erosion-control-mats; Fabrics-; Fertilization-Horticulture; Geocells-; Mulches-; Plant-growth; Plants-; Rainfall-; Roots-; Runoff-; Sandy-soils; Seeding-; Slopes-; Soil-stabilization; Tackifiers-; Test-sections; Topsoil- |
| 摘要： | In 1995 US 40 on the west side of Berthoud Pass had several cut and fill slopes that were the result of 1960s erosion control practices. Snowmelt runoff and severe spring and summer rain storms frequently washed away the easily eroded sandy soil, preventing vegetation from establishing itself on the slopes. Originally, sixteen different products, including erosion control mats, mulches and tackifiers, were to be tested for this study. The steep slopes and the severe weather at the site cause rapid erosion of exposed soils and would provide enough area to test several products. However, the severe conditions limited the plant cover established during the first growing season, so the slopes were re-seeded and fertilized several times during the subsequent years. Because the re-seeding and additional fertilization were done using standard materials and methods, no data were available on the performance of the mulches, tackifiers, and germination enhancers. Therefore, this report evaluates only the soil containment products used in three test sections of zone 1 and three test sections of zone 2. The fertilizers, tackifiers, and mulches originally used for this study are not evaluated. Based on observations of the surface conditions and quantities of plant material on the slopes: (1) It appears that all of the blankets and cellular confinement products provide reinforcement to the scarp forming area of the cut slopes; and (2) All of the cellular confinement materials and soil retention blankets were successful in holding and reinforcing the plants' root systems. This study found that all of the blankets and geocell products evaluated were effective in reducing erosion in this high-altitude environment. Any of the products tested will help to prevent the loss of the topsoil and to aid plant growth. |
| 总页数： | 2002/07. pp20 (5 Phot., 1 Tab., 1 Ref., 2 App.) |
| 报告类型： | 科技报告 |
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