Research on Plastic Zone Evolution Law of Surrounding Rock of Gob-Side Entry Retaining under Typical Roof Conditions in Deep Mine

Figure 2

Numerical analysis model of deep gob-side entry retaining with typical roof conditions. (a) Numerical model 1-gob-side entry retaining with thin immediate roof, (b) numerical model 2-gob-side entry retaining with thick immediate roof, (c) numerical model 3-gob-side entry retaining with thick-hard roof, and (d) numerical model 4-gob-side entry retaining with the compound roof.

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