Figure 7
Fissure width of different roughness rock. (a) The high JRC rock fissure. h1 and h2 is the fissure width on a smooth surface and the turning point of the fissure. (b) The local enlarged drawing of the high JRC rock fissure. (c) The low JRC rock fissure. (d) The local enlarged drawing of the low JRC rock fissure, where h3 is the fissure width. h2 > h1 > h3. h1, h2, h3 are measured perpendicular to the fracture walls.
