Location
San Diego, California
Presentation Date
30 Mar 2001, 1:30 pm - 3:30 pm
Abstract
A field liquefaction test was conducted in Delta, B.C., Canada. The target layer was a loose sandy silt between the 10 and 12 m depth. The test layer was instrumented with two triaxial accelerometers, dynamic and static pore pressure transducers, and Sondex tubes to measure vertical ground strain. An array of boreholes was drilled around the instrument cluster and charged with explosives. Delays were introduced to the detonation sequence in order to generate multiple blast pulses. The cyclic loading from the blasting generated a series of shear and compressive strain pulses. We consider that shear strain dominates residual pore pressure rise and that shear strain amplitudes can be induced by blasting similar to those caused by an earthquake. In this way, the susceptibility of the ground to pore pressure generation caused by cyclic shear straining and post-liquefaction deformations of the ground are tested. Details of methods used to estimate shear strains induced by the blasting process are described.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
4th International Conference on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
Publisher
University of Missouri--Rolla
Document Version
Final Version
Rights
© 2001 University of Missouri--Rolla, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
Document Type
Article - Conference proceedings
File Type
text
Language
English
Recommended Citation
Gohl, W. B.; Howie, J. A.; and Rea, C. E., "Use of Controlled Detonation of Explosives for Liquefaction Testing" (2001). International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics. 6.
https://scholarsmine.mst.edu/icrageesd/04icrageesd/session09/6
Included in
Use of Controlled Detonation of Explosives for Liquefaction Testing
San Diego, California
A field liquefaction test was conducted in Delta, B.C., Canada. The target layer was a loose sandy silt between the 10 and 12 m depth. The test layer was instrumented with two triaxial accelerometers, dynamic and static pore pressure transducers, and Sondex tubes to measure vertical ground strain. An array of boreholes was drilled around the instrument cluster and charged with explosives. Delays were introduced to the detonation sequence in order to generate multiple blast pulses. The cyclic loading from the blasting generated a series of shear and compressive strain pulses. We consider that shear strain dominates residual pore pressure rise and that shear strain amplitudes can be induced by blasting similar to those caused by an earthquake. In this way, the susceptibility of the ground to pore pressure generation caused by cyclic shear straining and post-liquefaction deformations of the ground are tested. Details of methods used to estimate shear strains induced by the blasting process are described.
