黏岩复合地层中盾构掘进引起的超欠挖分析
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齐永洁,蒋熠诚,周建,章伟康,张迪,魏纲
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Analysis of overexcavation and underexcavation caused by shield tunneling in clay and rock composite stratum
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Yongjie QI,Yicheng JIANG,Jian ZHOU,Weikang ZHANG,Di ZHANG,Gang WEI
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| 表 1 细观参数标定结果 |
| Tab.1 Microscopic parameter calibration results |
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| 细观参数 | R/mm | φ | ρ/(kg·m−3) | Ec/MPa | kn/ks | Tσ/kPa | Sσ/kPa | μ | μw | $\bar \sigma_{\mathrm{c}}$/ MPa | $ \bar c $/MPa | $ \bar \phi $/(°) | | ⑤1粉质黏土 | 8.7~9.7 | 0.55 | 1900 | 5 | 1.5 | 0.5 | 0.2 | 0.5 | 0.2 | — | — | — | | ⑥1淤泥质黏土 | 8.7~9.7 | 0.48 | 1900 | 5 | 1.5 | 15.0 | 12.5 | 0.5 | 0.2 | — | — | — | | ⑦1粉质黏土 | 8.7~9.7 | 0.48 | 1900 | 5 | 1.5 | 6.0 | 4.0 | 0.5 | 0.2 | — | — | — | | 硬岩层 | 8.7~9.7 | 0.4 | 3000 | 7000 | 7 | — | — | 0.5 | 0.3 | 41.5 | 40 | 40 | | 弹性膜 | 6.16 | — | 2000 | 7 | 1.5 | 1×10297 | 1×10297 | 0.7 | — | — | — | — |
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