Analysis of Strata Behavior Process Characteristics of Gob-Side Entry Retaining with Roof Cutting and Pressure Releasing Based on Composite Roof Structure

Figure 8

Roof lithology and division of the 8304 working face in Tashan Coal Mine: 1, 2, … , 6 are the six roof lithologic peepholes located at footage 0 m, 100 m, 200 m, 300 m, 400 m, and 550 m of the working face, respectively.