Details: core drilling in rock including overburden using hydraulic feed rotary drill and double tube core barrel with diamond bit including collection of core samples, maintaining continuous record of core recovery/ rqd, keeping the cores in wooden core boxes, transporting to laboratory, providing cap on top on completion of drilling, all complete as per the specification and instruction of the engineer in charge. nx size drill hole (total 5 no. of holes of varying depth at different locations in project area). upto 20 m depth from 20m to 40 m depth. from 40 m to 60 m depth from 60 m to 80 m depth from 80 m to 100 m depth from 100 m to 120 m depth from 120 m to 140 m depth from 140 m to 160 m depth from 160 m to 180 m depth from 180 m to 200 m depth from 200 m to 220 m depth above 220 m depth. recovery of cores @ 80 % of total drilling. excavation of exploratory drift at right bank of dam axis (total length 50 m) size 2.2. x 1.5 m. providing support system wherever required, all complete as p
Sector: Generation