Underground opening damage from earthquakes

Influence of seismic parameters on the performance of underground structures

“…Sharma & Judd (1991) further updated the previous database and concluded that no damage or minor damage occurred for PGA less than 0.15 g, which can be shown by Figure 3.…”

Analogues to features and processes of a high-level radioactive waste repository proposed for Yucca Mountain, Nevada

“…The latter variable increases as earthquake magnitude increases and as distance from the epicenter decreases. Sharma and Judd (1991) also noted that openings in a solid medium behaved better than those in unconsolidated material. They also suggested that their dataset is biased toward damage occurring because "there must be literally hundreds of other instances where no damage occurred but observations were not documented" (Sharma and Judd, 1991, p. 275).…”

“…Sharma and Judd (1991) for example, studied the susceptibility of underground facilities to damage and observed that damage decreases with depth and increases with increasing PGA. The latter variable increases as earthquake magnitude increases and as distance from the epicenter decreases.…”

Natural Analogue Synthesis Report

“…272-275) examined damage trends of underground facilities to seismic effects in an effort to aid future design of such facilities. They created a database consisting of 192 reported underground observations from 85 earthquakes throughout the world (Sharma and Judd 1991 [154505], p. 275). To examine the influence of seismic effects on underground openings, they used the measure of PGA that may be expected to occur at the surface directly above the underground location.…”