Ground treatment by grout injection

摘要

Chemical grout injection is a popular method for improving the stability and reducing the permeability of alluvial soils, but it is not always clear if the methodology adopted in a particular application of the practice represents the most efficient or cost-effective option.rnIt is possible, however, to use simple formulae to aid in the selection of injection parameters and to understand their inter-relationship, as well as to optimise injection spac-ings and times with respect to injection source dimensions and insitu permeability. A better understanding of these parameters can help when it comes to calculating the real cost of an injection programme and how to modify a scheme in progress to gain the best result.