Xuanping Gong

Study on Fracture Propagation Behavior of Composite Directional Fracturing with Prefabricated Crack and Control Holes in Coal Seams

In order to achieve the goal of changing the direction of cracks and actively relieving pressure to increase permeability in local areas, and to prevent excessive stress concentration and areas with poor anti reflection effect in coal seams, this paper proposes a method of coordi...