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Grouting technology for water tank leakage stoppage

Hits: 712 19:50:35, June 3, 2019 source: Jiangsu Xinda high altitude Engineering Co., Ltd

News Abstract: grouting is the most important technology in the water tank leakage stoppage technology. It is necessary to select the appropriate amount of slurry and inject the appropriate grouting materials to maximize the grouting effect, so as to meet the requirements of water tank leakage stoppage, and the slurry dosage needs to be estimated.

stay Plugging of pool The most important technology in the technology is grouting technology. It is necessary to select the appropriate amount of slurry and inject the appropriate grouting materials to maximize the grouting effect, so as to meet the requirements of water tank leakage stoppage. Therefore, it is necessary to estimate the amount of slurry.
When the water leakage of the pool is small, and the method of water injection can be used to calculate the actual water injection, and the grouting amount can be calculated according to the following relationship.
Q=(av1+v2)*d
Where q is the dosage of slurry (kg);
V1 -- actual injected water volume (M3);
V2 -- slurry volume of ground connecting pipeline (M3);
A -- coefficient (usually 1.1-1.3);
D -- specific gravity of slurry (kg / m3)
When the concrete crack has good connection with the soil layer (or inside the structure), and the water leakage of the pool is large, and the actual water injection volume cannot be measured, the grouting pressure can be used for water inflow, and the water consumption per unit time and the gel time for preparing the slurry can be calculated to estimate the slurry consumption, and the relationship is as follows:
Q=(av1t+v2)*d
Where q is the dosage of slurry (kg);
V1 -- actual injected water volume (M3);
T -- gel time of slurry;
Volume of slurry in ground pipeline (V2);
D -- specific gravity of slurry (kg / m3)
A -- coefficient (usually 1.1-1.3);
Note: t-grouting time, but must be less than gel time
The grouting pressure refers to the construction pressure required to overcome the field layer resistance at the leakage part of the pool and ensure the necessary seepage range of the slurry. It can neither be too high nor too small. Generally, the pressure higher than the underground water pressure of 0.5-1kg/cm2 is selected as the grouting pressure. According to the actual situation of the water tank leakage stoppage project, the grouting pressure of 1.1-1.5 kg / cm2 is adopted for the platform layer, and 0.9-1.2 kg / cm2 for the station hall layer.

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