The Pullout Mechanical Properties of Shrub Root Systems in a Typical Karst Area, Southwest China

Roots play a major role in reinforcing and stabilizing soil. The pullout mechanical characteristics of soil reinforcement slope protection the root systems dominant shrub species (Pyracantha Geranium) were estimated by in-situ tests karst area, which roots pulled out from to reliably test pulling force. goals this study discover properties areas try analyse impact system on landslide control. F–s curves multipeak with noticeable main peak double peaks. showed linear increasing trend at initial stage drawing decreased rapidly after reaching peak. inserted into rock cracks secondary fluctuations later drawing, stimulated tensile efficiency more effectively. Field situ results indicate that tree fail progressively rather than simultaneously. maximum force had relationship increase thickness disproportionate number broken roots. displacement was different between two concentrated 5–15 cm 5–25 for Pyracantha Geranium, respectively. Geranium 1.29 times Pyracantha, strong resistance. We concluded distribution affected cracks, while positive effects force, all is helpful understanding effect landslides areas.