The National Academies Press

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Pages 54-57

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From page 54... ... 54 CHAPTER SEVEN CONCLUSIONS AND KNOWLEDGE GAPS CONCLUSIONS This report presented information on cost-effective and sustainable road slope stabilization techniques, with a focus on shallow or near-surface slope stabilization and related erosion control methods used on low-volume roads. To document the state of the practice, a comprehensive literature review was conducted, followed by a survey and interviews. Read the entire page →
From page 55... ... 55 Appropriate water management may be the key to preventing slope failures. It is critical to develop a water management plan that identifies where the water is coming from, how the water interacts with the soil and topography of the site, where the water will go, and how much water is on site. Read the entire page →
From page 56... ... 56 In addition to soil bioengineering, there are many other cost-effective and sustainable slope stabilization techniques that do not necessarily incorporate vegetation; these are grouped in the reinforced soil slope section. This section covers the use of retaining walls, geosynthetics, and other artificial and/or nonbiodegradable slope stabilizers. Read the entire page →
From page 57... ... 57 • Independent testing of the effectiveness and appropriate applications for geogrids and geotextiles • Development of a suite of standard test methods for erosion-control products • Methods to determine when a slope is on the verge of failure, and preventive actions (which are more costeffective than reactive measures) • Cost-benefit analysis, predictive models, and performance evaluation criteria for each technique • Definition of the life expectancy of each technique and actual capability of products • Analysis techniques and understanding of pin piles • Effects of overdigging • Behavior of cut slopes in frozen soils and freeze/thaw issues on new slopes • Evaluation of erosion prediction models Vegetation and Ecology • A complete record of root establishment timing, spatial distribution, and contribution to slope stability for different climates and soil compositions. Read the entire page →

From page 54...

... 54 CHAPTER SEVEN CONCLUSIONS AND KNOWLEDGE GAPS CONCLUSIONS This report presented information on cost-effective and sustainable road slope stabilization techniques, with a focus on shallow or near-surface slope stabilization and related erosion control methods used on low-volume roads. To document the state of the practice, a comprehensive literature review was conducted, followed by a survey and interviews.

Read the entire page →

From page 55...

... 55 Appropriate water management may be the key to preventing slope failures. It is critical to develop a water management plan that identifies where the water is coming from, how the water interacts with the soil and topography of the site, where the water will go, and how much water is on site.

Read the entire page →

From page 56...

... 56 In addition to soil bioengineering, there are many other cost-effective and sustainable slope stabilization techniques that do not necessarily incorporate vegetation; these are grouped in the reinforced soil slope section. This section covers the use of retaining walls, geosynthetics, and other artificial and/or nonbiodegradable slope stabilizers.

Read the entire page →

From page 57...

... 57 • Independent testing of the effectiveness and appropriate applications for geogrids and geotextiles • Development of a suite of standard test methods for erosion-control products • Methods to determine when a slope is on the verge of failure, and preventive actions (which are more costeffective than reactive measures) • Cost-benefit analysis, predictive models, and performance evaluation criteria for each technique • Definition of the life expectancy of each technique and actual capability of products • Analysis techniques and understanding of pin piles • Effects of overdigging • Behavior of cut slopes in frozen soils and freeze/thaw issues on new slopes • Evaluation of erosion prediction models Vegetation and Ecology • A complete record of root establishment timing, spatial distribution, and contribution to slope stability for different climates and soil compositions.

Read the entire page →

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