DEWATERING - Rockwater - Hydrogeological & Environmental Consultants

WHY THIS SERVICE?

Mines that intersect significant aquifers require pumping from bores or sumps to limit the ingress of groundwater to the workings. Open-cut mines commonly need dewatering ahead of mining to ensure pit-floor workability and pit-wall stability.

Dewatering is also performed in construction projects, and in wheatbelt towns of Western Australian that are adversely impacted by rising water tables and secondary salinity.

Mining of the groundwater is an important, but commonly overlooked, perquisite to mining of the orebody.

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A SERVICE OFFERED FROM START TO FINISH

Rockwater has installed dewatering bores in a variety of environments and materials, including:

sedimentary basins;
fractured crystalline bedrock;
weathered crystalline bedrock;
vuggy chert, dolomite and banded iron-formation;
calcrete; and
lamproite associated with diamond pipes

Rock conditions are often challenging, involving the use of diverse drilling techniques, such as air- hammer, dual rotary, reverse flush, and air- and mud-rotary.

Geophysical surveys
RC exploration
Drilling and bore construction
Test-pumping
Core logging
Packer testing
Down-hole CCTV surveys

OFFICE PROCEDURES & OUTCOMES

Design of dewatering systems
Tender documentation
Risk assessments
Health and safety procedures
Analytical modelling of pumping test data

Numerical flow modelling for dewatering and drawdown prediction
Final void modelling
Water balance modelling
Groundwater licence operating strategies
Aquifer evaluation and assessment reports
Monitoring and other regulatory compliance reports

Projects in Dewatering

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