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.

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ژورنال

عنوان ژورنال: Advances in Civil Engineering

سال: 2021

ISSN: ['1687-8086', '1687-8094']

DOI: https://doi.org/10.1155/2021/6696229