Study on the Vibration Effect of Short Footage Blasting Load on Surrounding Rock-Support Structure of Tunnel

Table 1

Physical and mechanical parameters of the surrounding rock.

Grade of the surrounding rock	Elastic modulus E (KN/m^2)	Poisson’s ratio	The angle of internal friction	Volumetric weight ρ (KN/m^2)	Cohesiveforces c (KN/m^2)
V	1.3 × 10^6	0.40	20	16	150