A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Slurry suitable for shield construction of water-rich stratum
The invention relates to a slurry suitable for shield construction of a water-rich stratum. The slurry comprises a liquid A and a liquid B, the liquid B comprises water glass and water, every 0.75 m <3> of the liquid A comprises the following components of, by mass, 120-130 kg of cement, 385-395 kg of medium sand, 250-260 kg of fly ash, 40-50 kg of bentonite, and 395-405 kg of water. According to the slurry, the problem that the slurry is easy to wash and dilute due to long initial setting time is effectively solved, the initial setting time of the slurry is shortened by optimizing the proportion of the slurry, the slurry is prevented from flowing into a soil bin, the back of a duct piece is fully grouted, the phenomena of upward floating, leakage and the like of the duct piece are avoided, the construction quality is improved, and the construction cost is reduced.
本发明涉及一种适用于富水地层的盾构施工浆液，该浆液包括A液和B液，该B液包括水玻璃和水，A液每0.75m3的各组分质量比如下：水泥120‑130kg；中砂385‑395kg；粉煤灰250‑260kg；膨润土40‑50kg；以及水395‑405kg。本发明有效地解决了浆液初凝时间长容易被冲刷稀释的问题，通过优化浆液的配比，以加快浆液的初凝时间，防止浆液流入土仓，使得管片背后注浆饱满，避免出现管片上浮、渗漏等现象，提高施工质量，降低施工成本。
Slurry suitable for shield construction of water-rich stratum
The invention relates to a slurry suitable for shield construction of a water-rich stratum. The slurry comprises a liquid A and a liquid B, the liquid B comprises water glass and water, every 0.75 m <3> of the liquid A comprises the following components of, by mass, 120-130 kg of cement, 385-395 kg of medium sand, 250-260 kg of fly ash, 40-50 kg of bentonite, and 395-405 kg of water. According to the slurry, the problem that the slurry is easy to wash and dilute due to long initial setting time is effectively solved, the initial setting time of the slurry is shortened by optimizing the proportion of the slurry, the slurry is prevented from flowing into a soil bin, the back of a duct piece is fully grouted, the phenomena of upward floating, leakage and the like of the duct piece are avoided, the construction quality is improved, and the construction cost is reduced.
本发明涉及一种适用于富水地层的盾构施工浆液，该浆液包括A液和B液，该B液包括水玻璃和水，A液每0.75m3的各组分质量比如下：水泥120‑130kg；中砂385‑395kg；粉煤灰250‑260kg；膨润土40‑50kg；以及水395‑405kg。本发明有效地解决了浆液初凝时间长容易被冲刷稀释的问题，通过优化浆液的配比，以加快浆液的初凝时间，防止浆液流入土仓，使得管片背后注浆饱满，避免出现管片上浮、渗漏等现象，提高施工质量，降低施工成本。
Slurry suitable for shield construction of water-rich stratum
适用于富水地层的盾构施工浆液
CHEN SHIGUANG (author) / LI NIANGUO (author) / TANG LIXIAN (author) / TANG GAOHONG (author) / LI HAI (author) / CHEN XIAOYU (author) / HUANG TIANYU (author)
2021-04-30
Patent
Electronic Resource
Chinese
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