Research Article

Study on the Stability of the Coal Seam Floor above a Confined Aquifer Using the Structural System Reliability Method

Table 2

Calculation results of the median safety factor of stability of the water-resistant floor.

ParameterFirst type of failure modeSecond type of failure mode
Mining failureIntrusionCombined mode involving mining and intrusionTensile failureShear failure

Median safety factor of K2.7051.7501.9251.7442.645