Stability Analysis of Blasting Excavation for High Rock Slope of Highway Reconstruction and Expansion

Table 3

Accumulated displacement change before and after blasting (unit: mm).

Position	Top of the slope				Third-grade platform				Second-grade platform
Point number	01	02	03	04	05	06	07	08	09	10	11	12
Before blasting	11.2	10.0	10.3	10.6	10.8	10.5	11.1	11.1	4.1	3.2	3.0	4.1
After blasting	12.3	10.9	11.2	11.8	12.3	12.1	12.7	12.5	5.8	5.1	4.9	5.8
Displacement difference	1.1	0.9	0.9	1.2	1.5	1.6	1.6	1.4	1.7	1.9	1.9	1.7
Average value	1.025				1.525				1.8