DOI: 10.11799/ce201606015
Broken Surrounding Rock Layered Grouting Process and Application
HU Li-ming
JIA Yong-qiang
CHEN Hong-xu
Abstract：Aiming at the complex process and poor effect of common grouting process, a layered grouting process is proposed. The surrounding rock is divided into shallow zone and deep zone according to the different diffusion ways of slurry. Along with the new double-fluid grouting material and tube combination, single-hole layered grouting with single-material is achieved, simplifying the construction process. The results show that: Layered grouting process divides the surrounding rock into shallow zone and deep zone by the boundary of complete vadose zone, shallow zone mainly uses filling grouting, while deep zone uses penetrating and fracturing grouting; the new grouting material is large-range adjustable, and benefit to achieve layered grouting; compared with common grouting segment, the convergence of ribs and roof-floor decreases to 33?8% and 30%, severe deformation position of the roadway in front of working face is reduced from 45m to 20m, the reinforcement effect is obvious.
Keywords：layered grouting processshallow zonedeep zonenew double-fluid grouting materialbroken surrounding rock
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 48-50 )