The presentation focused on how sonic drilling can significantly improve geotechnical investigations of tailings storage facilities (TSFs) in Kazakhstan by enabling reliable, representative sampling of loose and saturated tailings. It explained the limitations of conventional drilling methods, such as poor sample recovery, sample disturbance, and borehole instability, and how these issues undermine laboratory results and design decisions.
The presentation highlights the principles of sonic drilling, its suitability for unconsolidated, water‑saturated materials, and the types of investigations possible in sonic boreholes (e.g., tube sampling, SPTs, piezometer installation, hydraulic testing).
The talk outlined both the technical advantages (better data quality, higher confidence in design, faster and more efficient drilling) and disadvantages (higher cost, reduced effectiveness in very hard rock, limited local availability) and concluded that, despite the higher unit cost, the method offers strong value and important opportunities for safer, more reliable TSF design and management in Kazakhstan.
