Blasting Near Underground Utilities
Blasting Near Underground Utilities
(OP)
Is anyone aware of any regulations or rules of thumb on how close to existing underground pipelines blasting should be allowed. We have an existing 12" sewer force main which is about 8 feet from where a contractor is preparing to blast for a new 18" trunk sewer. The gravity sewer will be about 10 feet deep while the adjacent force main is 3 feet deep.





RE: Blasting Near Underground Utilities
RE: Blasting Near Underground Utilities
RE: Blasting Near Underground Utilities
RE: Blasting Near Underground Utilities
monitor settlement, peak particle velocity, energy ratio and airblast pressures. Put limits on these such that only small charges can be used.
RE: Blasting Near Underground Utilities
RE: Blasting Near Underground Utilities
Use a series of test blasts if possible to determine the area of overbreak. If this is not possible, use the smallest charge diameter possiblw with really tight blast patterns.
Frank Lucca M.I.Exp.E.
www.terradinamica.com
RE: Blasting Near Underground Utilities
Unfortunately I dont remember the name of such chemical and that should not be hard to find out.