双线平行顶管上跨地铁盾构隧道施工环境影响实测分析
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应宏伟, 姚言, 王奎华, 张昌桔
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Observed Environment Response Caused by Construction of Double-Line Parallel Pipe Jacking Crossing over Metro Shield Tunnels
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YING Hongwei, YAO Yan, WANG Kuihua, ZHANG Changju
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表1 土层物理力学参数
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Tab.1 Physical and mechanical parameters of soils
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| 地层编号 | 地层名称 | h/m | w/% | a1-2/ MPa-1 | ES1-2/MPa | 直剪固快 | kh×104/
(cm·s-1) | kv×104/
(cm·s-1) | | c/kPa | φ/(°) | | ②-1 | 黏质粉土 | 1.6 | 28.1 | 0.21 | 8.75 | 9.1 | 27.8 | 3.1 | 2.7 | | ②-2 | 砂质粉土 | 3.0 | 26.5 | 0.17 | 10.38 | 7.5 | 28.8 | 5.2 | 4.9 | | ④-1 | 砂质粉土 | 8.2 | 26.1 | 0.16 | 10.88 | 8.0 | 29.4 | 4.4 | 3.6 | | ④-2 | 砂质粉土 | 14.0 | 26.0 | 0.17 | 10.64 | 8.7 | 27.7 | 6.5 | 5.8 | | ④-3 | 粉土夹黏性土 | 18.6 | 28.6 | 0.21 | 9.53 | 10.9 | 26.5 | 2.8 | 1.8 | | ④-5 | 粉质黏土夹粉土 | 24.5 | 34.5 | 0.43 | 4.60 | 24.6 | 14.3 | — | — | | ⑤-1 | 淤泥质黏土 | 33.8 | 44.2 | 0.74 | 3.24 | 11.7 | 9.5 | — | — |
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