Ichnofabric analysis displays a rising significance on accurate environmental interpretation of sedimentary units in oil-bearing basin and precise recognition of depositional disconuities.
Orebodies in sedirmentary rock hosted Au deposits are discrete hypogene and epigenetic masses usually hosted in a fault zone, breccia mass, or lithologic bed or unit.
Huang 21 firstly developed a simplified LBSM with shearing and rotation springs on the Winkler foundation, considering the discontinuous deformations at circumferential joints.
Then, Zhang 22 proposed an improved simplified LBSM with shearing and rotation springs on the Winkler foundation, which could simulate the discontinuous deformation at joints.
I now came to realize why most of his stories were coming from the past and not necessarily present continuous, but it was always referring to the past.
However, the settlement curves of these two typical continuous beam models (Timoshenko and Euler-Bernoulli) are smooth and differentiable, failing to describe the discontinuous features of shield tunnel settlement.
However, the predicted tunnel settlement curves from EB-W and TM-V are smooth and continuous, which fail to capture the discontinuous deformation at joints between rings.
Furthermore, it is worth noting that the curve based on this proposed method reflects discontinuous deformation at joints, manifesting as the non-smooth feature of the curve.
It can accurately reveal the discontinuous deformation behavior of shield tunnels, compared with LECM, and can account for the soil-spring stiffness under the condition of tunnel settlement.