| 摘要 |
<p>An apparatus, for allowing control of liquid level on a site, comprising a hollow stake body comprising lateral openings for allowing liquid thereinto when the apparatus is positioned into the ground, a stake tip at one end and a hit plate receiver at an opposite end. A method for controlling liquid level on an excavation site comprising positioning the apparatus at one location on the site, positioning a hit plate on the apparatus, repeatedly hitting the hit plate until at least one opening is below ground at a liquid control depth, removing the hit plate and installing a pump for pumping liquid accumulated in the apparatus. A mesh construction, for use with the apparatus, comprising a first punctured cover, a second punctured cover and a mesh assembly, comprising at least one filtration mesh, sandwiched between the first and the second punctured covers for allowing liquid therethrough.</p> |
