Discussion on Loading Problem in Physical and Numerical Simulation of Strata Movement
XU Jia-lin
QIAN Ming-gao
MA Weng-ding
ZHAO Hai-yun
Abstract：Based on the key strata theory in ground control, the problem and principle of simplifying the overlying strata as uniform load on the top of the model in physical and numerical simulation of strata movement were discussed through physical modeling experiments and numerical simulation calculations using softwares UDEC and FLAC. The results show that if there exists a key stratum in the omitted strata, it will lead to the distortion of the distribution of load and the simulation result of key strata fracture interval to simplify these strata as uniform load. In that case, only the strata above the main key stratum can be simplified as uniform load, and the equivalent load to the omitted strata should be calculated on the basis of the key strata location in the omitted strata and its fracture characteristics.
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Publication Date：2001-05-02
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 252-255 )