Figures of the Article
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Schematic diagram of grout filling and location of feature points
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Stress conditions of element body at feature points A and B
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Forces on backfill grouting of shield tunnel
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Decomposition of stress state near shield tail
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Compaction fracture diffusion model for backfill grouting of shield tunnel in low permeability strata
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Schematic diagram of fracture diffusion model for backfill grouting in shield tunnel
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Fracturing intervals under different lateral pressure coefficients
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Fracturing angles under different lateral pressure coefficients
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Fracturing intervals under different depths of shield tunnel
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Fracturing angles under different buried depths
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Relationship between diffusion distance and grouting pressure difference (elasticity modulus)
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Relationship between diffusion distance and grouting pressure difference (grout viscosity)
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Relationship between diffusion distance and channel width (elasticity modulus)
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Relationship between diffusion distance and channel width (viscosity)
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Circumferential fracturing diffusion front of shield tunnel
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Grout-oozing process of shield tunnel
Tables of the Article
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Parameters of shield tunnel
管片外半径/m 盾尾间隙厚度/m 隧道埋深/m 4.725 0.16 12 -
Parameters for layout of synchronous grouting holes
参数 注浆孔序号 1 2 3 4 5 6 位置/(°) 35 90 145 215 270 325 注浆压力/kPa 230 200 230 340 370 340 -
Other parameters
浆液密度/(kg·m-3) 浆液黏度/(Pa·s) 环厚δ/m 2190 2 0.0216 截面流量/(m3·s-1) 土体抗拉强度/
kPa侧压力系数 4.3453×10-4 40 0.5
