Figure 5
Soil section and soil pressure of the 1st–3rd phase test. (a–c) The 1st–3rd phase section fracture. (a-1, b-1, and c-1) The 1st–3rd phase horizontal stress. (a-2, b-2, and c-2) The 1st–3rd phase vertical stress. Horizontal distance: the preset fracture position is 0 points, the hanging wall is positive, and the footwall is negative. Vertical distance: the bottom plate of the footwall is 0 points, and the distance toward the top of soil layer is positive. Fracture f1-1: the first fracture in process of the first phase. Soil pressure: The compressive stress is positive, and the tension stress is negative.
