INVESTIGATION OF LANDSLIDE

INVESTIGATION OF LANDSLIDE

Picture :  Investigation of Landslide

Soil investigation is an attempt to obtain information for the planning of underground civil building foundation. Soil investigation must reach a depth where the soil provide or contribute to a decrease in the carrying capacity is due to the structure to be built. Soil investigation include, among others, land drilling, soil sampling, field testing, laboratory testing and observation of groundwater. Depth of investigation depends on the type structure, Soil type, the initial forecast the kind of foundation that will be used.

Accuracy in soil testing is needed. Especially in determining the groundwater, because the data obtained to plan the foundation is affecting the planning foundation, and can lead to errors in analyzing the stability of the soil.

Some ways to do for soil investigation is to test pits (Test-pit), Drill hand (Hand Auger), Drill Wash (Wash Boring), Investigations by washing (Wash Probing), and Drill Play (Rotary Drill).

The investigation aims to test hole determines the condition of the soil layers carefully. This method makes it possible to identify the soil directly, clearly know the density and soil water conditions in the field. Testing is usually done on the test pits important places of a building, such as the location of the column.

A hand drill testing is relatively simple and easy to do. Investigations with a hand drill is often used in the construction of highways, railways apai, and terbanga field. However, these tools can not be done on sandy soil. Hand drill can be used to probe reaches a maximum depth of 10 meters.

Drill washing is done with water penyemprotkan twirling casing. This tool is used to take samples disturbed, and can not be used on rocky soil types. Laundering investigation is basically the same as the drill wash, but the goal is to find a meeting between soft soil with solid ground. Such investigations often be done at the port development projects.

Rotary drill used on any type of soil. This tool can investigate solid and rocky soil to a depth of 40 meters. This tool can also be used on sandy soil. The way the device can be used without using the casing pipe (casing) .


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