Method and apparatus for improved trench box de-watering

a trench box and box body technology, applied in the field of trench box dewatering methods and apparatuses, can solve the problems of limiting the mobility and placement of equipment used, reducing the excavation cost, and increasing the excavation cost of providing these wells, so as to reduce the excavation cost, increase the excavation cost, and slow down the excavation.

Inactive Publication Date: 2014-03-13
BESSINGER THADDEUS JAMES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0003]Excavation for trenches often must involve removal of water from the trench, especially where certain soil and gravel stratus would result in an accumulation of water near the surface of the ground at depths less than the bottom of the trench, but also as a result of inclement weather during trenching operations. Previously, several methods for such “de-watering” have been used. For example, wellpoint methods typically involve drilling or boring at a plurality of positions adjacent to and surrounding the trench and pumping water our of the ground to prevent that water from flowing into the trench. However, providing these wells is a significant additional excavation cost and expands the necessary “footprint” or work space needed for the trench. Also, when the trench box “moves” or is dragged to a new trench location along the path of the drainage piping, for example, the wells have to be redrilled at the new locations. Further, the well heads create restrictions in the mobility and placement of equipment used in the excavation and construction project.
[0004]Alternatively (or in addition), it has been suggested to use pumps and various hoses to remove water from the interi

Problems solved by technology

Excavation for trenches often must involve removal of water from the trench, especially where certain soil and gravel stratus would result in an accumulation of water near the surface of the ground at depths less than the bottom of the trench, but also as a result of inclement weather during trenching operations.
However, providing these wells is a significant additional excavation cost and expands the necessary “footprint” or work space needed for the trench.
Further, the well heads create restrictions in the mobility and placement of equipment used in the excavation and construction project.
However, such equipment can get in the way of fu

Method used

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  • Method and apparatus for improved trench box de-watering
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  • Method and apparatus for improved trench box de-watering

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Embodiment Construction

[0024]FIGS. 1 and 2 show a representative trench or digging box 10 having a left side wall or panel 12 and a right side wall or panel 14 which are spaced apart at each end of the walls by structural tubes or spreader 16. The interior of the trench for working purposes is the area between side walls 12 and 14. Preferably, the bottom portion of each side wall includes a blade or tapered portion 18. The top of the trench box would normally be open, so as to allow persons and excavation equipment and / or construction equipment to enter the trench box, and the bottom of the trench box would typically rest of the exposed dirt, clay, rock and / or filtering gravel, according to the particular application, with blade 18 at the point of further penetration of the ground.

[0025]The present invention involves placing the de-watering equipment inside of the trench box structure itself, rather than inside the trench bounded by the trench box or spaced about the outside of the trench box area. In a g...

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Abstract

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.

Description

FIELD OF INVENTION[0001]The present invention relates to trench or “digging” boxes for excavation work, and, more particularly, to de-watering methods and apparatus for use in connection with such digging boxes.BACKGROUND AND SUMMARY OF THE INVENTION[0002]Excavation work, such as to lay drainage piping, communication lines, roadside service conduits, and the like, and to otherwise aid in construction projects, frequently involves creating a trench in the ground surface which extends several feet deep. Four to twenty foot deep trenches are not uncommon. To prevent the sides of the trench from collapsing inward while the excavation work is in progress or while the trench is in use for placement of structures therein, trench or digging boxes have been used. These boxes are typically comprised of two rigid steel side panels held apart and in fixed relationship by a plurality of steel tubes at the ends of the panels. Various such trench boxes are known, but examples can be found at the i...

Claims

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Application Information

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IPC IPC(8): E02D19/22
CPCE02D19/22Y10T137/0318Y10T137/85978
InventorBESSINGER, THADDEUS JAMES
OwnerBESSINGER THADDEUS JAMES