Landslides: Investigation and Mitigation. Chapter 10 - Subsurface Exploration

The subject of this chapter is subsurface exploration. The subsurface investigation program identifies potential problem areas and defines the features involved in an existing landslide. Following a discussion of what an appropriate subsurface exploration program includes and the initial planning of a subsurface investigation, each of the following subsurface exploration methods are examined: reconnaissance methods; surface-based geophysical methods; test and core borings; borehole logging; and field testing, including specialized sampling from test pits, adits, and shafts. Remaining sections of this chapter examine the treatment of samples and cores, investigation of groundwater conditions, and data presentation.