A nomogram for cement-based rock grouting

Shamu, Tafadzwa John; Zou, Liangchao; Håkansson, Ulf

doi:10.1016/j.tust.2021.104110

Cited by 9 publications

(3 citation statements)

References 37 publications

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“…Traditional grouting techniques were primarily based on experience and manual operations wherein the grouting quality mainly relied on the professional expertise of individual teams who execute the work [4,5]. Advancement has been made in recent decades to enhance grouting efficiency and eliminate the risks caused by malfunctioning during the operation [6,7]. These may be reviewed as the following:…”

Section: Introductionmentioning

confidence: 99%

Cement grouting online monitoring and intelligent control for dam foundations

Fan

Jiang

Wang

et al. 2023

Journal of Intelligent Construction

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Keywordsdam foundation reinforcement intelligent grouting control model intelligent slurry preparation real-time monitoring Baihetan Hydropower StationThis 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.

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Section: Introductionmentioning

confidence: 99%

Cement grouting online monitoring and intelligent control for dam foundations

Fan

Jiang

Wang

et al. 2023

Journal of Intelligent Construction

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“…Esta falta de formación contribuye al analfabetismo o dificultad entre ingenieros, científicos y profesionales en la construcción más básica y la interpretación de nomogramas. Aunque en la actualidad la nomografía no es común, hay una cantidad significativa de documentación técnica y científica (Bouso & Martínez-Pagán, 2023;Nicoletti et al, 2022;Shamu et al, 2021;Ulas et al, 2018), libros, folletos de especificaciones de maquinaria o catálogos de fabricantes, en los que se presentan muchas relaciones matemáticas bajo nomogramas (Yepes, 2022.…”

Section: Introductionunclassified

Competencias analógicas en un mundo digital. Nomogramas en el proceso de aprendizaje de la ingeniería

Yepes,

Martínez-Pagán,

Blight

et al. 2023

In-Red 2023 - IX Congreso Nacional De Innovación Educativa Y Docencia en Red

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Los nomogramas son una herramienta matemática antigua y eficiente para resolver problemas complejos. Se trata de una representación gráfica de una función matemática que permite resolver ecuaciones sin necesidad de realizar cálculos manuales exhaustivos. Aunque las calculadoras electrónicas han relegado su uso, los nomogramas todavía tienen ventajas en la docencia de la ingeniería, especialmente en cálculos repetitivos y en la representación en dos dimensiones de múltiples variables de entrada y respuesta. Además, los nomogramas son útiles en el manejo de distintos sistemas de unidades, reducen la probabilidad de errores de magnitud y son robustos a fallos. Se ha probado el uso de estas herramientas en estudiantes de grado y posgrado en diversas ingenierías. Posteriormente, se realizó una encuesta en escala Likert que demuestra que los estudiantes tienen un gran interés en estas herramientas y encuentran que son útiles en el proceso de aprendizaje de la ingeniería. A pesar de que un 78,4 % de los encuestados no habían utilizado nomogramas, el 86,5 % cree que esta herramienta analógica permite una buena interpretación del fenómeno cuando hay muchas variables y que los profesores deberían utilizarla en la docencia.

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“…In recent decades, scholars have done a lot of research on slurry. Li et al [31] proposed an SDS method to consider the space-time evolution characteristics of slurry viscosity, which describes the slurry diffusion and settlement behavior in the dynamic water of cracks, and realizes the visualization of the slurry diffusion process. Considering the effect of shear rate on the Bingham model, Shamu et al [32] proposed a new design framework to consider the length of slurry propagation.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of the Diffusion of Fissure Slurry at High Temperature

et al. 2022

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Deep-buried tunnel at high-ground temperature is prone to the sudden surge of water when crossing the water-rich formation, resulting in casualties and economic losses. Slurry injection is a common and effective method of governance for addressing this issue. However, there has been little research into pulping at high-ground temperature, with most of the existing research focusing on room temperature conditions. We studied two kinds of slurry commonly used in grouting, cement slurry and cement-sodium silicate slurry. Indoor testing was used in this paper to clarify the effect of temperature on slurry viscosity, and numerical simulation was used to study slurry diffusion in flat cracks at different temperatures. The results showed that in a hydrostatic environment, the spread rate of slurry was independent of temperature and type of slurry. For the same kind of slurry, the higher the temperature, the greater the maximum slurry pressure. The higher the temperature in a flow environment, the faster the slurry diffusion. As the temperature rised, the grouting pressure required for crack sealing decreased at first then rises. In a flow environment, the sealing effect of cement-sodium silicate slurry was superior to that of cement slurry.

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A nomogram for cement-based rock grouting

Cited by 9 publications

References 37 publications

Cement grouting online monitoring and intelligent control for dam foundations

Cement grouting online monitoring and intelligent control for dam foundations

Competencias analógicas en un mundo digital. Nomogramas en el proceso de aprendizaje de la ingeniería

Numerical Simulation of the Diffusion of Fissure Slurry at High Temperature

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