基于浆液黏度时空变化的水平裂隙岩体注浆扩散机制

doi:10.13722/j.cnki.jrme.2014.0958

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Abstract Double liquid grouting mode of fast curing grouts leads to spatial uneven distribution of viscosity in diffusion region of slurry. Regarding fast curing grouts as Bingham liquid of time-dependent Behavior，in stationary water environment，diffusion process of slurry in horizontal crack is studied. Considering spatial uneven distribution of viscosity，theoretical model of grouting in horizontal crack at constant grouting rate is established. Space-time distribution equation of viscosity and pressure in diffusion region of slurry is derived，and the influence mechanism of grouting time and grouting diffusion radius on grouting pressure is obtained. Comparing with result when spatial distribution of viscosity is even，it is essential that considering spatial uneven distribution of viscosity. Predefining the spatial distribution function of viscosity in numerical model，numerical simulation of crack grouting process considering spatial uneven distribution of viscosity is realized. Comparing theoretical analysis，numerical simulation and test results，rationality of theoretical analysis and numerical simulation is verified. It is hoped that the results will be constructive to grouting parameters determination in practical engineering.

Key words： time-dependent behavior of viscosity spatial uneven distribution of viscosity crack grouting Bingham fluid numerical simulation

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2014.0958 OR https://rockmech.whrsm.ac.cn/EN/Y2015/V34/I6/14

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