This chapter begins with a brief synopsis of landslide repair methodologies developed over the past 70 years. Early attempts at stabilizing slopes focused on em-placement of toe buttresses and inclusion of subdrainage. As earthwork equipment became larger and more capable, the removal and recompaction of entire slide masses became commonplace. Over the past decade, geotextile and geomembrane products have become available that can significantly alter the options for repair, especially under conditions of restricted access or poor weather. In the balance of the chapter, I seek to introduce the reader to some of these products and to case histories of ways in which they have been combined to effect novel solutions to slope stability problems.
Figures & Tables
Provides a variety of case histories, methodology to help identify, quantify, and mitigate landlsides, and legal cases affecting engineering geology. Part I provides basic information to aid in assessing geologic hazards related to compound landslides, surficial slope failures, and causes of distress to residential construction. Includes changes in the law relating to geologic investigations and disclosure of geotechnical information. Part II is a cross section dealing with recent significant landslides related to a single storm, intense rainfall, possible errors in the identification of and development on an existing or paleolandslide, and the use of pumping wells and horizontal drains to dewater slope failures. Also discusses how proper installation and use of drains prevent paleolandlsides from causing damage to modern facilities.