DOI: 10.11799/ce202512008
Zoning control technology for roadways in burnt rock based on fracture development characteristics
LONG Yan
FAN Gangwei
SUN Jianfeng
ZHU Peng
ZHU Yaqiang
YUE Xin
Abstract：Burnt rock exhibits fractured structure,well-developed fissures,and strong water-bearing capacity,making it a critical factor in controlling the surrounding rock of roadways in shallow coal seams in western China.Based on the actual engineering conditions of the burnt rock zone in the lower 11 coal seam exposed by the+1710 return air cross-cut in Yushuling Coal Mine,we employed methods such as field measurement and numerical simulation to establish a fissure density zoning system for roadway surrounding rock to identify its disaster evolution mechanism,and proposed targeted zonal control countermeasures and support optimization schemes.The results indicate that the fissure density of burnt rock exposed by roadways can be categorized into three zones:intact zone,fissured zone,and fractured zone.The corresponding support systems focus on cable bolt densification,grouting reinforcement,and combined shed support,respectively,achieving an integrated zonal control mode of support-reinforcement-protection.
Keywords：surrounding rock controlburnt rockzoning supportshallow coal seamnumerical simulation
Publication Date：2025-12-20
Online Publishing Date：2026-01-29(First online date of this platform, not the publication date of the document)
Pages：7( 56-62 )