Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Method for transitioning between Ziegler-Natta and metallocene catalysts in a bulk loop reactor for the production of polypropylene
Deceleration dependent shift control
System and method for ranking content and applications through human assistance
Combined high and low frequency stimulation therapy
Editing device and editing method
Method and apparatus for exercise monitoring combining exercise monitoring and visual data with wireless internet connectivity
Key management using quasi out of band authentication architecture
  Randomly Featured Patents
Master cylinder
Color image-forming machine and method of forming a correction table therefor
Multi-metal oxide catalyst and method for producing (meth)acrylic acid by using the same
Filtering device for dispensing and filtering from samples
Papermaking sludge recovery process and apparatus
Carboxyalkylureido cephalosporins
Laser control circuit and laser module
Disposable absorbent article including an elasticized area
Working apparatus
Stripline laser having composite electrodes