This paper shares the experience of China Three Gorges Corporation in intelligent grouting management for dam foundation reinforcement. An intelligent grouting control system called intelligent grout control hub with intelligent management (iGHM) was introduced to realize one-button closed-loop intelligent control of cement grouting by its robust grouting control models, novel grouting facilities, and intelligent online monitoring approaches. In this system, the grouting period (t) is intelligently divided into three zones and five phases based on the product of grouting pressure (P) and unit grouting rate (Q), which provide quantitative criteria for the grouting process control. Innovative grouting facilities (e.g., intelligent non-grading slurry tank, intelligent pressure control system, and central hub for grouting data management) and an intelligent grouting management cloud platform are subsequently incorporated to monitor, analyze, and evaluate grouting data online for efficient digital grouting management. Its application of consolidation grouting and high-pressure curtain grouting at the Baihetan Hydropower Station demonstrates that this intelligent grouting system could improve grouting quality with promising applications in similar projects.
Q. X. Fan, Z. L. Wang, J. R. Xu, et al. Study on deformation and control measures of columnar jointed basalt for Baihetan super-high arch dam foundation. Rock Mech Rock Eng, 2018, 51: 2569–2595.
P. Lin, X. X. Zhu, Q. B. Li, et al. Study on optimal grouting timing for controlling uplift deformation of a super high arch dam. Rock Mech Rock Eng, 2016, 49: 115–142.
M. Özçelik. Foundation consolidation grouting applications in Deriner dam and hydroelectric power plant (Artvin, Turkey). Bull Eng Geol Environ, 2014, 73: 493–498.
R. Glossop. The invention and development of injection processes Part I: 1802–1850. Géotechnique, 1960, 10: 91–100.
R. Glossop. The invention and development of injection processes Part II: 1850–1960. Géotechnique, 1961, 11: 255–279.
Wei P, Lin P, Peng H, et al. Analysis of cracking mechanism of concrete galleries in a super high arch dam. Engineering Structures, 2021, 248: 113227.
T. J. Shamu, L. C. Zou, U. Håkansson. A nomogram for cement-based rock grouting. Tunn Undergr Sp Tech, 2021, 116: 104110.
J. Y. Rafi, H. Stille. Applicability of using GIN method, by considering theoretical approach of grouting design. Geotech Geol Eng, 2015, 33: 1431–1448.
D. A. Bruce. Rock grouting for dams and the need to fight regressive thinking. Geotech News, 2011, 29: 23–30.
M. El Tani. Grouting rock fractures with cement grout. Rock Mech Rock Eng, 2012, 45: 547–561.
B. Stille, H. Stille, G. Gustafson, et al. Experience with the real time grouting control method. Geomech Tunn, 2009, 2: 447–459.
R. E. Müller. Monitoring of pumping tests and grouting operations. Rock Mech Rock Eng, 1984, 17: 51–59.
O. Minemura, N. Sakata, S. Yuyama, et al. Acoustic emission evaluation of an arch dam during construction cooling and grouting. Constr Build Mater, 1998, 12: 385–392.
P. Persoff, G. J. Moridis, J. A. Apps, et al. Evaluation tests for colloidal silica for use in grouting applications. Geotech Test J, 1998, 21: 264–269.
D. I. Harris, R. J. Mair, J. P. Love, et al. Observations of ground and structure movements for compensation grouting during tunnel construction at Waterloo station. Géotechnique, 1994, 44: 691–713.
Y. J. Chen, S. I. Zhang. Test embankment dam of fracture grouting. J Geotech Eng, 1989, 115: 1668–1672.
D. Gouvenot. State of the art in European grouting. Proc Inst Civ Eng—GR, 1998, 2: 51–67.
C. Butrón, G. Gustafson, Å. Fransson, et al. Drip sealing of tunnels in hard rock: A new concept for the design and evaluation of permeation grouting. Tunn Undergr Sp Tech, 2010, 25: 114–121.
H. Stille, G. Gustafson, L. Hassler. Application of new theories and technology for grouting of dams and foundations on rock. Geotech Geol Eng, 2012, 30: 603–624.
J. Tinoco, A. G. Correia, P. Cortez. Application of data mining techniques in the estimation of the uniaxial compressive strength of jet grouting columns over time. Constr Build Mater, 2011, 25: 1257–1262.
The support by China Three Gorges Corporation is acknowledged for providing access to its construction sites. This research was funded by the National Natural Science Foundation of China (No. 51979146) and the China Three Gorges Corporation Research Program (No. BHT/0774). The authors also thank Dr. Zuyu Chen (academician of CAS) from China Institute of Water Resources and Hydropower Research for his comments that greatly improve the quality this manuscript.
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