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A platform for research: civil engineering, architecture and urbanism
Green slurry for slurry shield construction of water-rich broken stratum and preparation method of green slurry
The invention provides green slurry for slurry shield construction of a water-rich broken stratum and a preparation method of the green slurry. The green slurry comprises the following components in parts by mass: 1000 parts of clear water, 130-170 parts of natural clay, 130-155 parts of bentonite, 3-6 parts of a dispersing agent and 40-70 parts of a green additive, wherein the green additive is maltodextrin and the anhydrous sodium carbonate serving as dispersing agent. The preparation method comprises the following steps: adding clear water into natural clay and bentonite while stirring to obtain a mixture; controlling the specific gravity of the mixture to be 1.11 to 1.13; sequentially adding a green additive and a dispersing agent into the mixture while stirring, controlling the standard funnel viscosity to be 24-26 s and the pH value to be 8-10, and continuously stirring the mixture to obtain the product. The obtained green mud is good in performance and low in cost, parameters such as viscosity, specific gravity, filtration loss and pH value of the green mud can meet engineering index requirements, and the green mud has certain popularization value.
本发明提供了一种用于富水破碎地层泥水盾构施工的绿色泥浆及其制备方法，所述绿色泥浆包括如下质量份数组分：清水1000份、天然粘土130～170份、膨润土130～155份、分散剂3～6份，以及绿色添加剂40～70份；其中，绿色添加剂为麦芽糊精；分散剂为无水碳酸钠。所述制备方法包括如下步骤：搅拌下向天然粘土与膨润土中加入清水，得到混合物；将所述混合物比重控制在1.11～1.13；搅拌下向混合物中依次加入绿色添加剂和分散剂，将苏式漏斗粘度控制在24～26s，pH值控制在8～10，继续搅拌即得。所得绿色泥浆性能良好、成本低廉，其粘度、比重、滤失量以及pH值等参数均能满足工程指标要求，具有一定的推广价值。
Green slurry for slurry shield construction of water-rich broken stratum and preparation method of green slurry
The invention provides green slurry for slurry shield construction of a water-rich broken stratum and a preparation method of the green slurry. The green slurry comprises the following components in parts by mass: 1000 parts of clear water, 130-170 parts of natural clay, 130-155 parts of bentonite, 3-6 parts of a dispersing agent and 40-70 parts of a green additive, wherein the green additive is maltodextrin and the anhydrous sodium carbonate serving as dispersing agent. The preparation method comprises the following steps: adding clear water into natural clay and bentonite while stirring to obtain a mixture; controlling the specific gravity of the mixture to be 1.11 to 1.13; sequentially adding a green additive and a dispersing agent into the mixture while stirring, controlling the standard funnel viscosity to be 24-26 s and the pH value to be 8-10, and continuously stirring the mixture to obtain the product. The obtained green mud is good in performance and low in cost, parameters such as viscosity, specific gravity, filtration loss and pH value of the green mud can meet engineering index requirements, and the green mud has certain popularization value.
本发明提供了一种用于富水破碎地层泥水盾构施工的绿色泥浆及其制备方法，所述绿色泥浆包括如下质量份数组分：清水1000份、天然粘土130～170份、膨润土130～155份、分散剂3～6份，以及绿色添加剂40～70份；其中，绿色添加剂为麦芽糊精；分散剂为无水碳酸钠。所述制备方法包括如下步骤：搅拌下向天然粘土与膨润土中加入清水，得到混合物；将所述混合物比重控制在1.11～1.13；搅拌下向混合物中依次加入绿色添加剂和分散剂，将苏式漏斗粘度控制在24～26s，pH值控制在8～10，继续搅拌即得。所得绿色泥浆性能良好、成本低廉，其粘度、比重、滤失量以及pH值等参数均能满足工程指标要求，具有一定的推广价值。
Green slurry for slurry shield construction of water-rich broken stratum and preparation method of green slurry
用于富水破碎地层泥水盾构施工的绿色泥浆及其制备方法
ZHOU ZHONG (author) / LI FAN (author) / ZHANG CHENGCHENG (author) / CHEN YUN (author) / DING HAOHUI (author) / LIU ZHUANGZHUANG (author) / GAO WENYUAN (author)
2020-05-19
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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