| 摘要 |
<p>The soil material is removed to form a slot (58) in the ground (64), and a hardenable material is introduced into the slot to form a slotted wall element. Two cables (26) are tensioned between the erosion apparatus (30) and a support device (14). The positions of two vertically spaced-apart cable points (42) of the cables are measured by a measuring device (40), through angle and range measurements. The determined positions of cable points are used for determining the position of erosion apparatus in the ground. An independent claim is included for an arrangement for creating slotted wall element in ground.</p> |
