[PDF][PDF] Soil erosion study of exposed highway construction slopes and roadways
B Anderson, DB Simons - Transportation Research Record, 1983 - onlinepubs.trb.org
B Anderson, DB Simons
Transportation Research Record, 1983•onlinepubs.trb.orgThe quantities of sediment produced from construction slopes and roadways are
determined, and a methodology to assist in the determination of these quantities is
presented. During the study a portable rainulator was fabricated and applied to collect water
runoff and soil erosion data from forest logging roads in northern California. The data
collection program was conducted on 10 representative soils in the study area and included
testing of cut slopes, fill slopes, road surfaces, and undisturbed sites above the roadway …
determined, and a methodology to assist in the determination of these quantities is
presented. During the study a portable rainulator was fabricated and applied to collect water
runoff and soil erosion data from forest logging roads in northern California. The data
collection program was conducted on 10 representative soils in the study area and included
testing of cut slopes, fill slopes, road surfaces, and undisturbed sites above the roadway …
The quantities of sediment produced from construction slopes and roadways are determined, and a methodology to assist in the determination of these quantities is presented. During the study a portable rainulator was fabricated and applied to collect water runoff and soil erosion data from forest logging roads in northern California. The data collection program was conducted on 10 representative soils in the study area and included testing of cut slopes, fill slopes, road surfaces, and undisturbed sites above the roadway. The data were analyzed and used as input to a simple mathematical model. Additional input parameters were estimated and the model was calibrated. The mathe· matical model was found to reproduce accurately measured values of water and sediment yield from the roadways. After the mathematical model was calibrated, a procedural guide and an interactive program were developed. Both can be used to assist the forest planner in determining the sediment produced from different roadway geometries and in assessing roadway design alternatives.
Erosion resulting from the construction and use of highways is a problem that continues to plague highway planners and designers. The sediment generated during and after construction is often excessive unless proper erosion control measures are taken. These measures, which should be incorporated in every roadway design, vary in nature from vegetative to structural methods for controlling erosion. In selecting the optimum roadway design, it is necessary to estimate the erosion that will be generated as a result of the design. Hence, methods or procedures for determining these erosion quantities are essential to the selection process. A recent study conducted by Colorado State University for Region 5 of the us Forest Service (1) culminated in the development of two methods for estimating water and sediment yield from roadways of different designs. The study included (a) selection of a mathematical model to simulate the erosion processes,(b) a field data collection program to
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