摘要 |
<p>The mobile draining arrangement is used for lowering ground water level. The mobile unit is connected horizontally for local draining in ground water area. This draining system is used in places where inserts cannot be driven into the ground vertically. The mobile unit avoids expensive pneumatic arrangements and temporary draining of saturated ground is ensured. It has a draining element consisting of a combined filter system with thick walled, perforated enclosing tubular shells. This holds a slotted filter and a vacuum filter tube is held in the shell centre. The space between shell, central tube and slotted filter is filled with filter gravel. The vacuum filter tube is connected to a pump.</p> |