Application of Fiber Grating Sensing in Similar Model Impact Tests of Underground Engineering

Table 1

Similarity ratio values.

Parameters	Unit	Ratio of similitude	Relations	Reduced scale
Density	kg/m^3			1
Size	m			50
Peak stress	MPa			50
Compressive strength	MPa			50
Tensile strength	MPa			50
Modulus of elasticity	MPa			50
Poisson’s ratio	/			1
Time	s			7.07
Speed	m/s			7.07
Strain				1