Scheme of set-up for infiltration tests

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Scheme of set-up for infiltration tests

2023, 45(9): 1878-1887.

Permeability characteristics of filter cake and pressure transfer on face during slurry shield tunnelling .

Figures of the Article

Tables of the Article

矿物成分	含量/%
Al_2.9Fe_0.04H₂K_0.86Mg_0.06Na_0.1O₁₂Si₃	22
Na_0.499Ca_0.491(Al_1.488Si_2.506O₈)	19
Na_9.9K_3.46Ca_3.52Al_15.9Si_56.1O₁₄₄(H₂O)_44.68	15
Al₃CaH₁₀KO₁₇Si₃	14
SiO₂	11
Al₂Si₄O₁₀(OH)	10
Al2(Si₂O₅)(OH)₄	9

Mineral contents of bentonite

土体类型	粒径/ mm	相对密度/ %	孔隙比	渗透系数/ (m·s^-1)
细砂	< 0.5	90	0.67	0.0017
中砂	0.5~1	90	0.69	0.0276
粗砂	1~2	90	0.69	0.0570

Physical properties of three types of sand

泥浆浓度/ (g·L^-1)	土体类型
泥浆浓度/ (g·L^-1)	细砂	中砂	粗砂
40	×	×	×
50	〇	×	×
60	〇	×	×
70	〇	〇	×
注：〇表示有泥膜形成，×表示无泥膜形成。

Thicknesses of slurry-infiltrated soil for various tests

泥浆浓度/ (g·L^-1)	土体类型
泥浆浓度/ (g·L^-1)	细砂	中砂	粗砂
40	5	32	35
50	3.5	30	35
60	2.5	23	35
70	1.5	17	33

Final infiltration distances for various tests 单位：cm