High-pressure Anchorage Injection Active Control Comprehensive Technology for Deeply Buried Soft Rock Roadways with Large Deformation and Engineering Practice
Abstract：To address the problem of large deformation in deeply buried soft rock roadways under high stress, where anchor rods and bolts continue to move closer, this study analyzes the staged deformation mechanism of anchoring structures in deeply buried soft roadways. It reveals the principle of staged active control through high-pressure anchorage injection in deeply buried soft rock roadways. A single-component, rock-friendly, coal-friendly, and dual-component early-strength nano-modified inorganic-organic composite high-performance grouting material was developed. A large-tonnage, high-pressure hollow grouting anchor rod and grouting bolt were researched and developed, forming a comprehensive technology for high-pressure anchorage injection active control of large deformation roadways in deeply buried soft rock. The technology was applied in engineering practices in coal roadways and rock roadways at the Kouzidong mine's deep shaft. The research results show that the key comprehensive technology of high-pressure anchorage injection active control can effectively solve the problem of controlling large deformation in deeply buried soft roadways.
Machine-generated Keywords：
Publication Date：2025-07-30
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：8( 27-34 )