Research Article
Study on the Stability of the Coal Seam Floor above a Confined Aquifer Using the Structural System Reliability Method
Figure 9
Relationship between the position of key strata and reliability probability. (a) Failure modes of intrusion type and the combined type of mining failure and intrusion and (b) mining failure, shear and tensile failure of key strata, and failure mode of the system.
(a) |
(b) |