Study on Construction and Optimization of the Life-Saving Passage in Building Ruins Based on Numerical Simulation Method

Table 5

Timing test of breach rescue technology.

No	Equipment type	Breach object	Breach direction	Size of breach hole	Number of testers	Breach type	Proficiency	Average time (T)
1	Electric, internal combustion, and cutting machine	Single floor, 120 mm thick reinforced concrete floor slab, double row reinforcement, longitudinal reinforcement diameter 16 mm, stirrup diameter 8 mm	Vertical breach	1.2 m in diameter	3	Safe breach	Skilled	81′33″
2							Unskilled	126′50″
3						Quick breach	Skilled	64′41″
4							Unskilled	87′46″
5		Double floor, 120 mm + 120 mm thick reinforced concrete floor slab, double row reinforcement, longitudinal reinforcement diameter 16 mm, stirrup diameter 8 mm	Vertical breach	1.2 m in diameter	3	Safe breach	Skilled	185′22″
6							Unskilled	282′43″
7						Quick breach	Skilled	148′55″
8							Unskilled	203′38″
9		120 mm thick masonry wall	Horizontal breach	1.2 m in diameter	3	Safe breach	Skilled	45′05″
10							Unskilled	55′17″
11						Quick breach	Skilled	33′24″
12							Unskilled	46′22″
13		240 mm thick masonry wall	Horizontal breach	1.2 m in diameter	3	Safe breach	Skilled	60′18″
14							Unskilled	72′26″
15						Quick breach	Skilled	51′30″
16							Unskilled	63′47″
17		370 mm thick masonry wall	Horizontal breach	1.2 m in diameter	3	Safe breach	Skilled	85′41″
18							Unskilled	98′21″
19						Quick breach	Skilled	74′57″
20							Unskilled	86′11″