| 摘要 |
A method and apparatus for use of a trenching or digging box which incorporates de-watering equipment that draws water into the lowermost portions of the box and pumps the water out of the box. This de-watering equipment can be retrofit into existing trench boxes by modification of the existing blade or lowermost portion of the box or the addition of a blade or lowermost portion. Slots or perforations in the blade portion or lower portions filter debris in the first instance. Additional or alternative filtering can be accomplished by lengths of perforated or slotted pipes inside the walls of the trench box, especially near the lower portions. Water can be drawn from either or both ends of the trench box. Attachments can be used to focus de-watering and specific areas of concern. De-watering can be from one or both of the side walls of the trench box. |
