巷道支护钢纤维喷射混凝土三轴荷载试验  

Triaxial Load Test of Steel Fiber Shotcrete for Mine Gateway Support

作　　者：张贵国[1] 陈辉[1] 张亚英[1] 

机构地区：[1]北京工业职业技术学院,北京100042

出　　处：《煤炭科学技术》2011年第7期14-16,34,共4页Coal Science and Technology

摘　　要：为了探索矿山巷道支护工程中经常使用的钢纤维混凝土在三轴荷载作用下的力学性能,通过岩石三轴试验机,对钢纤维混凝土试件进行了各种不同条件下的三轴试验,试验数据统计分析认为,钢纤维混凝土的最佳体积率为1.5%-2.0%,同时,总结出了钢纤维混凝土在三轴荷载作用下的极限抗压强度与围压的关系公式,围压越大,钢纤维混凝土的极限抗压强度越大,塑性越好。In order to discover the mechanics performances of the steel fiber concrete under the triaxial load effect which often applied to the mine roadway support.with the rock triaxial testing machine,the triaxial test under the different conditions was conducted on the steel fiber concrete specimens.The statistics and analysis of the test data showed that the optimum volume rate of the steel fiber concrete would be about 1.5%-2.0%.Meanwhile,the paper summarized the relationship formula between the ultimate compressive strength and the surrounding pressure of the steel fiber concrete under the triaxial load effect.The higher surrounding pressure,the higher ultimate compressive strength of the steel fiber concrete would be and the plasticity would be better.

关 键 词：钢纤维混凝土 三轴荷载 应力应变曲线 抗压强度 

分 类 号：TD353.5[矿业工程—矿井建设]