Brno – holding at Královky, engineering-geological and hydrogeological survey

Exploration by 9 engineering-geological  and 5 hydrogeological core holes with total drilling depth  300m drilled by core bit  HVS 482  and ADBS.
Hydrogeological core holes  are cased by perforated PVC case DN 125 mm  with screwed joint; hole annular areas filling by sorted gravel 1,4/4 mm grade; cement-bentonite seal on the top part of hole.  Engineering-geological holes with  275/220/175 mm dimeter cased by PVC case DN 125 mm with screwed joint and mudpan, annular space filling by sorted gravel of 1,6 – 4 mm grade; bentonite seal on the top part of hole.

09/ 2017