Accounting for joints effect on the failure mechanisms of shallow underground chalk quarries

作者：Rafeh F; Mroueh H^*; Burlon S

来源：Computers and Geotechnics, 2015, 69: 247-261.

DOI：10.1016/j.compgeo.2015.05.008

• Failure mechanisms
• Joints
• Numerical modeling
• Strength reduction technique
• Theory of multi-mechanisms
• Underground quarries

Unexploited chalk quarries in North France and its region constitute a risk of damage on both people and constructions. This work aims to study the mechanical behavior of the cavities affected by presence of joints and fractures in the chalk layers. First, an oriented yield criterion based on the theory of multi-mechanisms is developed to account for the presence of double joint sets. Then, a shear strength reduction approach is integrated in this joint model and implemented to study the mechanical stability state of these quarries. This provides some provisions about the effect of joint characterization on strain profiles and failure mechanisms in chalk quarries.

• 出版日期2015-9