Explore PRCS’s surface exploration and laboratory investigation work for the Nikachu Hydropower Project, covering the surge shaft, pressure shaft, powerhouse, and tailrace tunnel in Bhutan.
Name of the Client:
Druk Green Power Corporation
Project Description:
Core Drilling & Rotary Drilling, Index Rock properties, Natural Water Content, Porosity, Unit Weight, Specific Gravity/Absorption Test, Sonic Velocity Test, Petro graphic Analysis, Unconfirmed Compression Test (With and without strain measurement), Triaxial Compression Test, Direct Shear Test and indirect Tensile Strength Test.
Scope of work:
Drilling carried out by using required size bits in soft and weathered rocks and NX size bits in hard rock formation. Drill runs have not exceeded 3 m in length and the core removed from the drill holes as after as may be.
Rotary drilling is done in a most extensive and common technique employed for detailed exploration to know the condition of soil and rock. Water Tightness of the bedrock is determined by conducting water pressure/permeability tests. The Data included:
- Project identifications, boring number, location, data of start of boring.
- Coordinates of the location.
- Elevation of the ground surface, angle from horizontal.
- Depth to ground water and raising or lowering of level. Elevation which drilling fluid returns was partially or totally lost.
- Length of each core run and length or percentage of the core recorded.
- Rock Quality Designation.
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