Model Test on Grouting Properties of Alluvial Filler Soil

Due to the complexity and untraceability of grouting process underpinning slurry diffusion law, current study on properties alluvial filler soil lags behind engineering application. Therefore, model tests, including a laboratory test dynamic penetration test, are developed in this investigate law strength characteristics soil. Through excavation model, pattern can be observed precisely. Then an approach proposed for estimating shear growth is verified by tests. In addition, assess volume, analytical considering shrinkage coefficient developed. The good agreement between data results shows that method effectively estimate increase amount. show generally first filled fractured along interface rock mainly horizontally, with widths 0.3~6.0 cm. curves radius versus distance from hole wavelike relationship all directions (i.e., horizontal, up, down).