DOI: 10.11799/ce202601013
Rockburst prevention technology in development headings based on the three-zone loading theory
KONG He
TAN Huawen
TAN Guolong
TIAN Guoqing
ZHANG Zehui
Abstract：To address the challenge of rockburst prevention in development headings under the coupled effects of large mining depth,fault structures,and lateral stress from goafs,we employed a combined approach of theoretical analysis,field measurement,and engineering back-analysis.We systematically investigated the mine pressure behavior in development headings and proposed comprehensive rockburst prevention measures of"drilling-blasting+reverse heading advancement+targeted reinforcement support,"achieving safe excavation in areas of coupled high stress concentration.The research results show that,based on estimates from the"three-zone loading"theory,the maximum static load on the development heading is 45.67 MPa,and the peak lateral abutment pressure from the goaf is located 60 m from the goaf.Microseismic monitoring data indicate that microseismic events mainly occur within 30 m of the roof and floor.Microseismic events within 30 m from the roof account for 40%of the total energy and 38%of the frequency.This horizon primarily corresponds to a 13.4 m thick medium sandstone located 23.6 m above the coal seam roof,providing a basis for optimizing roof fracturing parameters guided by key strata theory.The back-analysis results of microseismic data show stress accumulation at 55～80 m from the 3lower101 goaf,which is generally consistent with the 60 m peak location calculated by the three-zone loading theory.
Keywords：three-zone loadingrockburstdevelopment headingcoupled superpositionmicroseismic monitoringdrilling-blasting combinationkilometer-deep mine
Publication Date：2026-01-20
Online Publishing Date：2026-03-10(First online date of this platform, not the publication date of the document)
Pages：7( 101-107 )