www.valenza-engineering.com 381_R_04_Rev 0 OGNZL_WUG_Phase1_Conceptual_Mitigation 35 6.3. GROUTING SEQUENCE AND SCENARIOS 6.3.1. APPLICATION The installation of monitoring instruments, probing, grouting and dewatering is likely to be undertaken predominantly from permanent centralised locations underground and developed in sequence with the mine planning. Instrument installation and treatment will be completed from underground chambers (developed from exploration cuddies) and will support ongoing monitoring and treatment activities. These chambers will be designed to target key pathways and will allow for specific monitoring and grouting (curtain grout) to be placed as required. Pre-grouting development will target shafts, drives and stopes. Where required, specific drives will need to be developed in anticipation to allow sufficient time for dewatering to occur before the actual mine development under the pre-grouting configuration. Figure 6-4: Typical grouting pattern for tunnel sections (after Grouting Specialists) Figure 6-5: Grouting and Instrumentation completed from Underground Chambers developed in conjunction with the Declines and Drives
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