CAJ | 학술논문

为解决华丰煤矿－1100 m水平风井联络巷变形持续时间长、变形量大、难支护的问题，结合巷道围岩地质条件和巷道变形破坏特征，设计了以钢管混凝土支架为主的复合支护方案：支架断面为圆形，支架主体钢管采用φ219mm×8mm无缝钢管，充填C40混凝土，辅助锚网喷和围岩注浆加固。而后，利用FLAC3D 对支护效果进行模拟分析，结果表明：巷道支护稳定后顶底板最大移近量为90mm，两帮移近量为80mm，围岩变形得到有效控制。最后，将复合支护技术成功应用于工程现场，充分证明基于钢管混凝土支架的复合支护能够有效控制巷道围岩变形，保证巷道的长期稳定。
위해결화봉매광－1100 m수평풍정련락항변형지속시간장、변형량대、난지호적문제，결합항도위암지질조건화항도변형파배특정，설계료이강관혼응토지가위주적복합지호방안：지가단면위원형，지가주체강관채용φ219mm×8mm무봉강관，충전C40혼응토，보조묘망분화위암주장가고。이후，이용FLAC3D 대지호효과진행모의분석，결과표명：항도지호은정후정저판최대이근량위90mm，량방이근량위80mm，위암변형득도유효공제。최후，장복합지호기술성공응용우공정현장，충분증명기우강관혼응토지가적복합지호능구유효공제항도위암변형，보증항도적장기은정。
In order to solve the supporting difficult problem of long-term and large deformation of air-shaft connection roadway at -1100 m level in Huafeng Colliery , considering surrounding rock geological condition and roadway deformation and damage characteris -tics, combined supporting scheme which took concrete filled steel tube support as main supporting pattern was designed .Supporting section shape was circle.219mm×8mm seamless tube filled by C40 concrete was applied, assisted by anchored mesh and injection and grunting for reinforcement.FLAC3D numerical simulation results showed that maximum roof and floor convergence was 90mm, two-side convergence was 80mm after supporting reached stable , and surrounding rock deformation was controlled effectively .Field application of the supporting system fully proved that the combined supporting system could effectively control surrounding rock deformation and make roadway keeping long-term stable.