Study on the Influencing Factors of Grouting Anchorage for Self-Drilling Bolts in Sandy Pebble Strata

Applied Sciences, Год журнала: 2025, Номер 15(11), С. 5888 - 5888

Опубликована: Май 23, 2025

To investigate the anchoring performance of self-drilling anchors in gravel-cobble strata, this study conducted indoor orthogonal tests based on soil grouting experiments to simulate actual construction conditions. The influence fine particle content, pressure, and water-cement ratio parameters was analyzed. Additionally, a simulation model developed using PFC2D 5.0 numerical software examine effects drilling speed, grout viscosity diffusion radius through single-factor experimental schemes. results demonstrate that: content exerts most significant impact performance, with higher reducing peak pullout resistance; exhibits positive correlation pressure but negative speed viscosity, having strongest influence, followed by speed; pattern follows gradually decreasing trend along direction, while increases at diminishing rate elevated pressure; when ranges from 83.3 833.3 mPa·s, decreases 72%; multivariate regression analysis indicates power function relationship between these three parameters.

Язык: Английский

Characteristics and mechanisms of water-sand gushing disaster in clay aquiclude-confined aquifer composite strata: An experimental study

Engineering Geology, Год журнала: 2025, Номер unknown, С. 108158 - 108158

Опубликована: Май 1, 2025

Язык: Английский