New Algorithm for Simulating Grout Diffusion and Migration in Fractured Rock Masses
Publication: International Journal of Geomechanics
Volume 20, Issue 3
Abstract
It is of crucial importance to develop an efficient numerical method to investigate the mechanism of grout diffusion and migration in fractured rock masses. However, most existing models only concentrate on the grout flow in a single fracture and most existing algorithms for large-scale fracture networks have high computational cost. A new dynamic diffusion and migration algorithm for grout was proposed and applied to the two-dimensional fracture network in this paper. Based on the geometric relationship between the fracture network nodes, an effective and feasible generation method of the connectivity matrix was proposed to realize the digitization of the topological structure of the fracture network. Finally, the Fracture Networks Grouting Diffusion Program (FNGDP) was developed to visualize the entire process of grout diffusion and migration in fracture networks. Compared with other algorithms, the proposed algorithm can realistically simulate the grouting process and greatly reduce computing time.
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Acknowledgments
This work was financially supported by National Natural Science Foundation of China under Grant Nos. 51774267 and 41807250, the Youth Innovation Promotion Association CAS of China under Grant No. 2017377, the National Key Basic Research Program of China under Grant Nos. 2015CB058102 and 2014CB046903, and the China Postdoctoral Science Foundation Program under Grant Nos. 2019T120686 and 2017M622515. The anonymous reviewers are deeply acknowledged for reviewing this article and giving their valuable comments.
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Published In
International Journal of Geomechanics
Volume 20 • Issue 3 • March 2020
Copyright
©2019 American Society of Civil Engineers.
History
Received: Jan 18, 2019
Accepted: May 23, 2019
Published online: Dec 20, 2019
Published in print: Mar 1, 2020
Discussion open until: May 20, 2020
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