| Summary: | Soil movement occurs and causing the landslide in Indonesia. Inclinometer is tool for
monitoring the activity of soil movement that occurs in subsurface. PT. Total E&P Indonesie use
inclinometer for monitoring soil movement on Senipah pipeline. In Senipah area, East Kalimantan,
that located in Formation of Kampungbaru (Tpkb) is composed of quartz sandstone intercalation with
clay and silt. However, the area of inclinometer installation is dominated by sandy CLAY and silty
CLAY. The method on using inclinometer installation is drilling activity to create a borehole. Soil
investigation was conducted during the installation, there are sampling method, insitu soil test, and
laboratory test. The sampling methods are core sample, undisturbed sample, and SPT sample.
Standard Penetration Test (SPT), visual classification (soil description), pocket penetrometer test, and
torvane test are included in Insitu tests. Laboratory tests are water content, density, motorvane, and
triaxial. The main steps for inclinometer installation are setting up the casing of inclinometer into the
borehole, determining direction inclinometer casing to the potential direction of soil movement, and
grouting gap between inclinometer casing and borehole. Inclinometer readings use some additional
tools, there are probe, reel, and PC field. The principle of inclinometer reading is to read the soil
movement every 0.5 meters. The data generated of inclinometer reading is a graph that showing the
state of the soil movement based on its depth. The advantage of this inclinometer tool is interpreting
the failure plane that located when there is a significant difference of soil movement within a certain
depth.
Keywords: Landslide, Inclinometer, Senipah, Soil Investigation
|
|---|