The back analysis of initial stress is usually based on measured stress values, but the measuring of
initial stress demands substantial investment. Therefore, amounts of underground engineering have no measured
initial stress data, such as tunneling engineering. Focusing on this problem, a new back analysis method which
does not need measured initial stress data is developed. The fault is assumed to be caused by initial load, the
displacement discontinuity method (DDM) which considered non-linear fault is adopted to establish a numerical
model of the engineering site, and the multivariable regression analysis of the initial stress field around the faults
is carried out based on the fault throw. The result shows that the initial stress field around the faults is disturbed
significantly, stress concentration appears in the tip zone, the regressive fault throw matches the measured values
well, and the regressive initial stress field is reliable.
LI Ke1,2* (李 科), WANG Ying-yi3 (王颖轶), HUANG Xing-chun2,3 (黄醒春)
. Regression Analysis of Initial Stress Field Around Faults Based on Fault Throw by Displacement Discontinuity Method[J]. Journal of Shanghai Jiaotong University(Science), 2013
, 18(4)
: 474
-478
.
DOI: 10.1007/s12204-013-1423-0
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