A Retrospective Evaluation of the Progress of Computer Monitored Grouting

Real time electronic monitoring has become standard for rock grouting. By the early 1980s, its use had already become a reality, but in only a few places worldwide. From the earliest work using paper chart recorders, to the introduction of the personal computer, through to use of the present, sophisticated, parallel multi-hole computer recording software, real-time monitoring has evolved significantly over the last 30 years. This paper tracks the history of the development of the techniques and gadgetry, and explores the trials and tribulations experienced along the way. The issues that resulted in nearly a 10 year gap between original introduction of electronic monitoring methods and general acceptance by those originally skeptical of its advantages are explored, highlighting the immense benefits that have been achieved in improving rates of constructability of grout curtains, and with better quality. Some insights for future advances are then suggested.