Sinkhole investigation methods: the next step after special publication no. 57

Abstract

Presently, there is no standard method required by the Florida statutes in a sinkhole investigation. However, most investigators follow the recommendations found in the Florida Geological Survey, Special Publication No. 57 (SP 57). This paper expands on the information in SP 57 by providing specific geophysical, geotechnical and structural recommendations that should be considered in sinkhole investigations. In particular, attention is directed at developing an understanding of the interaction of a building with the subsurface, how an investigation should be conducted to obtain this crucial information, and how the investigative process is interactive: as new information is developed, previous assumptions need to be reexamined in light of the new data. In addition, recommendations are made for the various steps to be taken in a subsurface investigation. Using the recommendations found in this manuscript, sinkhole investigations can become more standardized and comprehensive thereby gaining more agreement among investigators in the outcome of the investigation.