钢管桩-注浆加固盾构换刀区稳定性分析
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戴治恒, 张孟喜, 魏辉, 顾婕, 张晓清
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Stability Analysis of Shield Cutter Replacement Ground Reinforced with Steel Pipe Pile-Grouting
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DAI Zhiheng, ZHANG Mengxi, WEI Hui, GU Jie, ZHANG Xiaoqing
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表1 地层土体力学性质
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Tab.1 Mechanical properties of strata
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| 地层类型 | 土层名称 | 厚度/m | 弹性模量/MPa | 内摩擦角/(°) | 黏聚力/kPa | 泊松比 | 重度/(kN·m-3) | | 全风化地层 | 素填土 | 9.0 | 2.5 | 7.0 | 12.0 | 0.20 | 19.0 | | 粉质黏土 | 8.0 | 36.2 | 20.0 | 10.6 | 0.25 | 19.0 | | 全风化砂岩 | 15.5 | 60.0 | 23.1 | 9.6 | 0.32 | 20.0 | | 强风化砂岩 | 7.5 | 70.0 | 32.5 | 2.0 | 0.28 | 21.0 | | 中风化砂岩 | 20.0 | 80.0 | 35.0 | 3.0 | 0.27 | 23.0 | | 上软下硬地层 | 素填土 | 2.0 | 2.5 | 7.0 | 12.0 | 0.20 | 19.0 | | 粉质黏土 | 24.0 | 36.2 | 20.0 | 10.6 | 0.25 | 19.0 | | 全风化二长花岗岩 | 26.0 | 108.8 | 21.3 | 18.2 | 0.32 | 21.0 |
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