ISSN: 1945-7545
CODEN: GTJODJ
Page Count: 10

Blast-Induced Liquefaction of an Alluvial Sand Deposit

Charlie, WA
Professor and geotechnical engineering program leader, Colorado State University, Fort Collins, CO

Jacobs, PJ
Geotechnical engineer, Stone and Webster Engineering Corp., Englewood, CO

Doehring, DO
Professor and head, Colorado State University, Fort Collins, CO

Abstract

A series of six different explosive charges ranging from 0.0045 to 9.06 kg were detonated at a depth of 3 m below a sand island in the South Platte River, northeast Colorado. Pore pressure, particle velocity, and residual pore pressure were measured at several locations. Liquefaction was induced in the dense, saturated, coarse sand at a depth of 3.0 m when peak compressive strain exceeded 0.01%, peak particle velocity exceeded 0.16 m/s, or at scaled distances less than 3 m/kg^⅓. No residual pore pressure was induced at a peak compressive strain less than 0.002% at peak particle velocity less than 0.03 m/s, or at scaled distances greater than 16 m/k^⅓.

Keywords:
liquefaction, sand, blast, explosive, pore pressure, particle velocity

Paper ID: GTJ10220J
DOI: 10.1520/GTJ10220J
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