Geotechnical drilling
site Preparation
1. initial preparation
a. Position the tent / work site in a safe place of potency: 1) Fall twigs, tree branches or dried. 2)
Flooded water because of the location of the tent / work lower elevation point of the drill
b.Position the zinc core sample place to store the correct position so easily split core sample is
placed on top of zinc (do not need to be inverted and will create confusion)
c.Be sure to give all sides a safety timber zinc (where cores) so as not to be scratched (safety). So
also when zinc is used as a protective roof corebox, as much as possible all the edges of zinc
wrapped with duct tape (insulation).
d.Corebox for storage, as much as possible avoid direct sunlight spotlight, especially corebox who
have full / photographed
e.Make sure the work area is not in the area / tilted position so that the potential for "slippery" or
slip / fall. Setting wastewater must be considered, as well as water from drilling activities so as
not to inundate the work area / road vehicles.
2. during Drilling
(Keep in your mind), remember the absolute agreement that whenever and wherever, Bottom position of sample / core is always to the right of you.
Determine recovery and RQD
Remember that the total length of each line corebox = 105 cm, so you can sample cores bilan intact / not broken, length> 1 meter, then we have to cut core sample just over 1 meter and do not need to be filled to the full line corebox, because it means that long 1 line core would be 1.05 meters or 105 centimeters.
To determine the depth of the core sample, must be considered the closest distance to the edge corebox sample when the sample is in the position corebox
sampling:
1. initial preparation
a. Position the tent / work site in a safe place of potency: 1) Fall twigs, tree branches or dried. 2)
Flooded water because of the location of the tent / work lower elevation point of the drill
b.Position the zinc core sample place to store the correct position so easily split core sample is
placed on top of zinc (do not need to be inverted and will create confusion)
c.Be sure to give all sides a safety timber zinc (where cores) so as not to be scratched (safety). So
also when zinc is used as a protective roof corebox, as much as possible all the edges of zinc
wrapped with duct tape (insulation).
d.Corebox for storage, as much as possible avoid direct sunlight spotlight, especially corebox who
have full / photographed
e.Make sure the work area is not in the area / tilted position so that the potential for "slippery" or
slip / fall. Setting wastewater must be considered, as well as water from drilling activities so as
not to inundate the work area / road vehicles.
2. during Drilling
(Keep in your mind), remember the absolute agreement that whenever and wherever, Bottom position of sample / core is always to the right of you.
Determine recovery and RQD
Remember that the total length of each line corebox = 105 cm, so you can sample cores bilan intact / not broken, length> 1 meter, then we have to cut core sample just over 1 meter and do not need to be filled to the full line corebox, because it means that long 1 line core would be 1.05 meters or 105 centimeters.
To determine the depth of the core sample, must be considered the closest distance to the edge corebox sample when the sample is in the position corebox
sampling:
- Make sure you are on the right bottom sample
- When cutting the sample to be careful. Find a place cut off the runway rather hard to cut when the sample is not curved so easily broken
- Photo sample by first setting up the form photos. When the mem-core sample photo or corebox, avoid no shadows or in part subject to the conditions of light and partly dark
- Sample with plastic wrap, put the arrow towards the bottom and then wrap, then wrap again with aluminum foil and also given the direction of the arrow bottom, after it was confirmed by duct tape (insulation). Inserted into the gutter last dilakban and when the excess length of plastic gutter that first cut to length sample. Sometimes the sample is longer than the existing gutter, if so then make sure always wrapped with paper / waste paper at both ends of the sample, and then tied up with duct tape, label it with the sample and the sample depht No. borehole, as much as possible made label both sides of the sample so that if one one deleted / damaged, we still have a label next section
- Never forgotten, samples were taken every day to camp and store rooms close
- Corebox that have been photographed, that is scheduled to be brought back to camp
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