| 摘要 |
PURPOSE: A reaction device for rockbolt pull-out test is provided to reduce time and labor required for equipment setting, while achieving improved accuracy of test result. CONSTITUTION: A reaction device(100) comprises a reaction plate(20a) having a central hole and an upper pressure column(28) coupled between a reference bottom plate and a coupling hole; a dial gauge(30) including a variable type measurement unit(32) coupled to a rockbolt(10), a guide rod(34) linked to the variable type measurement unit, and a gauge; an adjustment rockbolt(40) penetrating through the coupling hole of the reaction plate and coupled through an adjust screw(42), and which adjusts height of the reaction plate; an expansion sample rockbolt(50) coupled to the exposed end of the rockbolt through a coupling(52); an intermediate plate(60) having a central hole and a lower pressure column(66) coupled to the edge of the intermediate plate, and which is coupled to the expansion sample rockbolt with a predetermined spacing from the coupling; a hollow hydraulic cylinder(70) connected to the intermediate plate; and a bearing plate(80) contacting the hollow hydraulic cylinder, and which is coupled to the expansion sample rockbolt through an adjust screw(82).
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