Changes

Hand auger - driven wells

175 bytes added, 02:45, 17 July 2012

no edit summary

{{stub}}

[[Image:drilling icon.png|right]]

[[Image:Point and well screen.jpg|thumb|right|250px| Point and well screen]]

The driven well can only achieve a penetration of only 1-2 meters into the water table because of the compacting resistance of the sand. The depth can be increased to about 10 meters using an engine driven power tool. However, the type of formation (of the aquifer, permeable or not permeable) can not be determined at this depth because no soil samples can be taken. This may affect the well yield. It is not possible to install a gravel pack around the well screen.

 {{procontable | proborder="1" cellpadding="5" cellspacing="0" align="center"|-! width="50%" style="background:#efefef;" | Advantages! style="background:#ffdead;" | Disadvantages|-| valign="top" | - The driven well can be used in combination with augers in collapsing sand layers.<br>| convalign= "top" | - The driven well can only achieve penetration of 1-2 meters into the water table<br>|}} 

[[Image:Self made point and well screen.jpg|thumb|right|250px| Self made point and well screen]]

• ← Older edit
• Newer edit →

Winona

Akvopedia-spade, akvouser, bureaucrat, emailconfirmed, staff, susana-working-group-1, susana-working-group-10, susana-working-group-11, susana-working-group-12, susana-working-group-2, susana-working-group-3, susana-working-group-4, susana-working-group-5, susana-working-group-6, susana-working-group-7, susana-working-group-8, susana-working-group-9, susana-working-group-susana-member, administrator, widget editor

30,949

edits