Experimental Study on Overlying Strata Movement Characteristics and Distributed Optical Fiber Characterization of Stope

Table 1

Basic parameter table of 3D physical similarity model.

Item	Parameter	Item	Parameter
Length	360 cm	Width	200 cm
Height	200 cm	Excavation steps	54 steps
Thickness of coal seam	10 cm	Single excavation distance	5 cm
Geometric similarity ratio	1 : 200	Excavation time interval	0.5 h
Similarity ratio of bulk density	1.56 : 1	Stress similarity ratio	380 : 1