Jet grouting: mathematical model to predict soilcrete column diameter - part I Online publication date: Tue, 10-Mar-2015
by Babak Nikbakhtan; Derek Apel; Kaveh Ahangari
International Journal of Mining and Mineral Engineering (IJMME), Vol. 6, No. 1, 2015
Abstract: Predicting soilcrete column diameter in jet grouting operations is one of the challenging tasks of engineers. By being able to determine the diameters, number of required columns and their spacing needed for activities such as cut off walls, soil improvement and slope stability activities can be calculated. However, there is no precise method to calculate and design the diameter before the operations. Therefore authors attempt to present a mathematical model using sum of squared-deviations (SSDs) method to estimate the diameter of soilcrete created by triple fluid jet grouting system. To do so, the actual data where soilcrete diameters have been measured, is used to prove and test the mathematical model. The effective jet grouting operational parameters that impact the diameter have been determined according to literature review of previous studies. On the basis of the results of modelling, the presented equation can predict soilcrete diameters with error range of 3-20%.
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