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发明公开
CN110437812A 一种盾构带压进仓用浆液及其制备方法 无效 - 驳回

一种盾构带压进仓用浆液及其制备方法
摘要：
本发明公开了一种盾构带压进仓用浆液及其制备方法，旨在解决制备一种在海水环境中具有良好稳定性，较低的滤失量，可用于盾构带压进仓时形成不透水泥膜的浆液的技术问题。该盾构带压进仓用浆液，以重量百分比计，由以下原料制备而成：钠基膨润土9%~16%，羟丙基甲基纤维素HPMC0.25%~0.58%，消泡剂0.25%~0.66%、余量为水。本发明盾构带压进仓用浆液具有良好的稳定性，能够抑制海水对浆液的离析作用，在海水渗入浆液的情况下，浆液仍然能保持稳定。
摘要（英）：

The invention discloses slurry used for pressurized excavation chamber entering in shielding and a preparation method thereof, in order to solve a technical issue of preparing slurry which has good stability and low filter loss in a seawater environment and which can form a water-impermeable mud film during pressurized excavation chamber entering in shielding. The slurry is prepared from, by weight, 9-16% of sodium bentonite, 0.25-0.58% of hydroxypropyl methylcellulose (HPMC) and 0.25-0.66% of a defoamer, with the balance being water. The slurry has good stability, can suppress slurry segregation caused by seawater, and can remain stable in the case of seawater infiltration into the slurry.

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