Spotlight on sonic log analysis

In the early stages of ASIMS’ development, the acoustic scanner interpretation report included a brief sonic log analysis section to highlight rock strength and the pressure of possible massive units, incorporating the finely tuned Seedsman Geotechnics uniaxial and unconfined compressive rock strength (UCS) regression that effectively accentuates lower strength rocks.

Fast forward a few years, ASIMS expanded the sonic log analysis to include a detailed rock strength index (RSI) and a more comprehensive massive unit identification process, and so began the ‘Analysis of Sonic Log’ report.

Most sites these days have established their empirical relationship between sonic transit time however ASIMS’ detailed RSI data highlights potential zones of compressive roof failure, areas where roadways may experience floor heave, and whether there is sufficient roof support. Identification of massive units within the overlying strata will typically indicate where the coal seam roof may experience period loading. Massive units aren’t always confined to sandstone intervals – massive siltstone and claystone units have been found in unexpected locations and can be easily overlooked. ASIMS’ sonic log analysis highlights all possible massive units, regardless of lithology.

ASIMS’ winning combination of acoustic scanner interpretation and analysis of sonic logs provides high quality, high confidence data for mine planning and mitigation of geological hazards.

Check out our website https://mbgs.com.au/our-services/asims/ or contact us at https://mbgs.com.au/contact-us/