Study on the Safety Evaluation Method of Life-Saving Passage in Building Ruins under the Action of Aftershock

Table 9

The probability percentage p′ (%) of the secondary collapse of the life-saving passage.

Aftershock	4.0–4.4	4.5–4.9	5.0–5.4	5.5–5.9	6.0–6.4	6.5–6.9	7.0–7.4	≥7.5
p′	0	0	10.7	21.4	35.7	57.1	71.4	85.7