Model Test Study on Overburden Failure and Fracture Evolution Characteristics of Deep Stope with Variable Length

<div>The three-dimensional mining model of working face with variable length. (a) Forward knife handle working face. (b) Reverse knife handle working face.</div>

Advances in Civil Engineering

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Figure 1

Figure 1: Model Test Study on Overburden Failure and Fracture Evolution Characteristics of Deep Stope with Variable Length 