Mining-Induced Strata Movement of Open-Pit Final

Strata and surface movement induced by mining under open-pit final slope is a huge 8 threat to mine safety. Physical model test is an important method to study mining-induced strata 9 and surface movement laws. Because of rock joints predominantly control rock mass deformation 10 and failure, thus physical model test leaving out of consideration of rock joints is difficult to reflect 11 the influence of rock joints on rock mass deformation. Therefore, this paper presents a three12 dimensional physical model test considering simplified dominant rock joints. This test process 13 includes the design of testing equipment, the construction of physical model with dominant rock 14 joint sets, conduction of mining and deformation monitoring. And mining under eastern final slope 15 of Yanqianshan iron mine was selected as a case to study the behavior of mining-induced strata and 16 surface movement. 17