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Slope Stabilization and Repair Solutions for Local Government Engineers

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Date Created
2017
Report Number
2017-17
Description
The purpose of this project is to create a user-friendly guide focusing on locally maintained slopes requiring reoccurring maintenance in Minnesota. This study addresses the need to provide a consistent; logical approach to slope stabilization that is founded in geotechnical research and experience and applies to common slope failures. Authors used input from Minnesota county engineers; case studies from site investigations throughout the state; and a parametric study of slope stability modeling parameters to develop stabilization recommendations. The project;beginning in September 2015; consisted of four primary research phases. In Task 1; researchers identified slopefor furtherer analysis via a survey sent to each county engineering department in the state. Responses provided site investigation locations. Researchers conducted site investigations and developed case studies to analyslope stabilizationion methods. Task 2 involved performing a literature review to identify slope stabilization methods. In Task 3;laboratory testing characterized soil properties from case study sites. Additionally; limit equilibrium method (LEM)models were developed for each slope to investigate different stabilization methods in a parametric study. In Task 4;modeling and analysis results were summarized for distribution to local government engineers. The target audience ofthe guide is county or local municipal engineers who do not have specialized geotechnical engineering experience. Theresearch does not address slope stability issues of the scale that require local municipalities to hire geotechnical engineering specialists. Authors intend the deliverable to assist with efficient stabilization of common recurring slopefailures along roadways.

Slope Stabilization Guide for Minnesota Local Government Engineers

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Date Created
2017-06
Report Number
2017-17G
Description
This user guide provides simple, cost‐effective methods for stabilizing locally maintained slopes along roadways in Minnesota. Eight slope stabilization techniques are presented that local government engineers can undertake using locally available materials and equipment. These methods are the result of a research effort that analyzed recent slope failures in Minnesota. The recommendations are based on input from Minnesota county engineers; case studies from site investigations within the state; and slope stability analysis, including limit equilibrium methods. This guide is based on information provided in Slope Stabilization and Repair Solutions for Local Government Engineers, which presents the results of a Minnesota Local Road Research Board research project on slope stabilization methods. Detailed information about the research project along with complete descriptions of the field sites is available in the report. Local government engineers are encouraged to reference the report when using this guide.