Research Article
Study on the Stability of the Coal Seam Floor above a Confined Aquifer Using the Structural System Reliability Method
Figure 7
Relationship between variation coefficient of random variables and reliability probability. (a) Failure modes of intrusion type and the combined type of mining failure and intrusion and (b) mode of mining failure, shear and tensile failure in key strata, and system failure.
(a) |
(b) |