考虑干湿循环路径的粉砂质泥岩力学特性及本构模型

成辉,付宏渊,曾铃,于晓伟,罗锦涛,刘杰

Mechanical properties and constitutive model of silty mudstone considering drying-wetting cycle path

Hui CHENG,Hongyuan FU,Ling ZENG,Xiaowei YU,Jintao LUO,Jie LIU

表 2 不同干湿循环路径作用下粉砂质泥岩损伤模型参数

Tab.2 Parameters of silty mudstone damage model under different drying-wetting cycle paths

$ {\sigma _3} $/kPa w/% n m0 r0 $ {\sigma _3} $/kPa w/% n m0 r0 10 — 0 0.0166 2.3883 30 10 5 0.0133 2.7119 30 — 0 0.1904 3.1341 30 10 10 0.0264 2.6889 90 — 0 0.1012 3.3757 30 10 20 0.0224 2.5899 10 5 5 0.1528 2.6359 90 10 5 0.0359 3.1221 10 5 10 0.0165 2.2553 90 10 10 0.0286 2.9375 10 5 20 0.0511 2.1880 90 10 20 0.1454 3.0475 30 5 5 0.0410 2.8725 10 15 5 0.0215 2.3597 30 5 10 0.2205 3.1156 10 15 10 0.0473 2.2364 30 5 20 0.0611 2.7584 10 15 20 0.0176 1.9490 90 5 5 0.2272 3.5124 30 15 5 0.0176 2.7627 90 5 10 0.1705 3.3536 30 15 10 0.0624 2.7566 90 5 20 0.0960 3.1828 30 15 20 0.1174 2.6693 10 10 5 0.1095 2.4711 90 15 5 0.1056 3.2852 10 10 10 0.0225 2.2875 90 15 10 0.0674 3.1364 10 10 20 0.2069 2.3850 90 15 20 0.0574 2.8579