基于改进滤失试验的泥水盾构动态泥膜渗透特性研究

魏纲,朱彦华,尹鑫晟,丁智,崔允亮

Analysis of dynamic filter cake permeability characteristics of slurry shield based on modified fluid loss test

Gang WEI,Yan-hua ZHU,Xin-sheng YIN,Zhi DING,Yun-liang CUI

表 2 泥浆的基本性质

Tab.2 Basic properties of slurry

泥浆型号 mb/g 材料 Mr/103 (mmmw−1)/% μs/s vm/s ρ/(g·cm−3) τy/Pa μ/(mPa·s) S/(mL·(2g)−1) d85/mm SL1 50 — — 0 16 30 1.03 0.15 1.50 12.0 0.033150 SL2 70 — — 0 17 31 1.035 0.16 1.90 12.0 0.030580 SL3 50 APAM 25000 1 253 472 1.03 8.94 33.65 18.9 0.047820 SL4 50 CPAM 16000 1 19 38 1.03 0.10 5.80 15.9 0.135110 SL5 50 PAA-Na 1.2 1 19 34 1.03 0.51 3.40 16.6 0.069890 SL6 50 PAA-Na 15 1 22 40 1.03 1.28 6.05 18.3 0.066940 SL7 50 CMC 41 1 23 41 1.03 2.20 9.15 15.2 0.059670 SL8 50 CMC 57 1 264 291 1.03 32.04 63.35 17.3 0.050940 SL9 50 CMC-Na 8 1 31 51 1.03 2.96 19.40 15.3 0.063560 SL10 50 PAA-Na 1.2 2 20 36 1.03 0.87 5.95 17.3 0.044890 SL11 50 PAA-Na 15 2 23 38 1.03 3.12 6.45 19.1 0.087200 SL12 50 CMC 41 2 29 51 1.03 3.73 7.75 15.9 0.049960 SL13 50 CMC-Na 8 2 114 163 1.03 19.21 56.50 16.0 0.070220 SL14 50 QT — 13.7 17 31 1.10 0.2 3.50 12.9 0.043574 SL15 50 QT — 13.7 49 114 1.10 8.64 34.95 16.5 0.077433 SL15 50 CMC-Na 8 1 49 114 1.10 8.64 34.95 16.5 0.077433