To evaluate the influence of swelling rock humidity-stress field on surround rock deformation and secondary stress state，firstly，based on the incrementaltheory，swell rock humidity stress field elastoplastic constitutive model was established. And the numerical difference scheme was deduced. Secondly，based on the FLAC3D secondary development program module，the humidity-stress field constitutive model was coded. The algorithm flowchart and several case techniques were provided. Thirdly，the humidity stress field elastoplastic constitutive model was tested in an engineering example，by comparing its results with traditional Mohr-Coulumb model. Results showed that the humidity stress field model performed better，and visible improvement in detecting changes of surround rock deformation and secondary stress state caused by swelling force. The validation of the humidity stress field constitutive model was verified.
王 凯，刁心宏. 膨胀岩湿度应力场本构模型二次开发研究[J]. 岩石力学与工程学报, 2015, 34(S2): 3781-3792.
WANG Kai，DIAO Xinhong. SECONDARY DEVELOPMENT STUDY OF SWELLING ROCK HUMIDITY STRESS FIELD CONSTITUTIVE MODEL. , 2015, 34(S2): 3781-3792.
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2015, Vol. 34 
