DYNAMIC PORE PRESSURE PROPAGATION IN SAND.
Abstract
A study was made of pore pressure in sand subjected to a blast overpressure. Results indicated that the lower the permeability of the soil and the shorter the duration of the positive phase of load, the greater the attenuation of the pore pressure at depth. Results also indicated that the attenuation of the pore pressure at depth is not significantly affected by the magnitude of the overpressure. The influence of moisture content on attenuation was not consistent in the experiment. An attenuation relationship has been developed to represent the experimental results and similar data from other sources. Velocity of pore pressure propagation was found to increase with increasing permeability, decreasing duration of overpressure, and increasing degree of saturation. It was not significantly affected by the magnitude of the overpressure. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1969
- Accession Number
- AD0682937
Entities
People
- Daniel G. True
Organizations
- Naval Facilities Engineering Service Center