DO GEOTECHNICAL ENGINEERS NEED EXPERT SYSTEMS

The author reviews expert systems for geotechnical engineers and the future role of such systems in engineering practice is reviewed. Five cases where expert systems could be applied are identified: capturing, replicating and distributing expertise; fusing the knowledge of many experts; managing complex problems and amplifying expertise; managing knowledge; and gaining a competitive edge. Understanding ground conditions is more of an art than a science due to the complexity and natural variability of geological materials, and major problems can occur where critical ground conditions are not recognised, or a significant feature not appreciated. Experience is often more important than design rules and formulae. Possibly the best use of expert systems would be as an assistant to an experienced engineer, particularly in the assessment of large amounts of data which may not be in the main specialisation of the engineer. Expert systems exist to assist with the location of petroleum resources and assist in the task of mineral exploration. A number of systems are available to deal with the judgement and uncertainty present in the assessment of the acceptable magnitude of risk structure due to earthquakes. Useful systems need to be user friendly and be able to deal with qualitative and quantitative data. (TRRL)