Resources Contact Us Home
Method for underground excavation

Image Number 2 for United States Patent #5678957.

A method for underground excavation below an area, without opening the area above the excavation, the method comprising constructing at least a pair of diaphragm walls, the walls being at two opposite sides of the area and extend substantially from the surface area to beneath the lowest level of the excavation. Either prior or after constructing the walls, a plurality of tunnels are bored under the surface area, with the tunnels extending from one diaphragm wall of a pair to another and having a diameter allowing them to accommodate one or more cables. Then, the one or more cables are inserted through the tunnels, and tensioned with their ends anchored to two diaphragm walls of a pair and excavating is performed between said diaphragm walls and beneath the cables.

  Recently Added Patents
Real-time pricing of shipping vendors
Defensin polynucleotides and methods of use
Discharge lamp comprising coated electrode
Electronic time stamping apparatus for use with an inground transmitter
Quaternary chalcogenide wafers
Dynamic facsimile transcoding in a unified messaging platform
  Randomly Featured Patents
Rotating vessel for recreational activities
COX1-interacting proteins and use thereof
Articles with retractable traction elements
Semiconductor device
Apparatus and method for cooling films coated in a vacuum
Magnetic encapsulated toner compositions
Apparatus for producing rubber mixtures
Flame-resistant polymer compositions
Health-care e-commerce systems and methods