Cement Slurry Plugging Law and Optimal Plugging Flow Rate at a High Hydraulic Gradient
نویسندگان
چکیده
With the continuous development of coal and rock mass engineering, water inrush grouting has become an urgent problem in engineering disaster management. Herein, a theoretical model optimal plugging flow rate was established, comparative analysis performed based on results indoor tests. The particle incipient velocity defined as rate. effects hydrodynamic velocity, water-cement ratio, pressure, fracture aperture cement slurry were studied, threshold obtained for verification. Results showed that, at high hydraulic gradient, effect grout mainly affected by pressure (listed order importance). When low, difference deposition thickness large under different water–cement ratios pipe diameters. increased, influence various factors decreased. Through experimental values, pure 0.5–0.55 m·s−1 conditions, error between values less than 0.1 m·s−1, which confirmed rationality proposed model.
منابع مشابه
Normal saline and mucous plugging.
cialist in the medical critical care/pulmonary unit at Christiana Care Health System in Newark, Delaware. history of smoking along with chronic respiratory diseases such as cystic fibrosis, chronic obstructive pulmonary disease, asthma, and bronchiectasis. Other patient-related factors that may contribute include smoking, immobility, sedation, muscle weakness, and dehydration. A mucous plug occ...
متن کاملPlugging Side-Channel Leaks with Timing Information Flow Control
The cloud model’s dependence on massive parallelism and resource sharing exacerbates the security challenge of timing side-channels. Timing Information Flow Control (TIFC) is a novel adaptation of IFC techniques that may offer a way to reason about, and ultimately control, the flow of sensitive information through systems via timing channels. With TIFC, objects such as files, messages, and proc...
متن کاملPlugging Into Energy Market Diversity
In North America, electricity prices exhibit both temporal and geographic variation—the later exists due to regional demand differences, transmission inefficiencies and generation diversity. Using historical market data, we characterize the variation and argue that existing distributed systems should be able to exploit it for significant economic gains. We consider pricing in cloud computing sy...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Advances in Civil Engineering
سال: 2021
ISSN: ['1687-8086', '1687-8094']
DOI: https://doi.org/10.1155/2021/6696229