VIBRATING WIRE TYPE SHOTCRETE STRESSMETER WITH SENSOR PROTECTIVE BOX

摘要

PURPOSE: A vibrating wire type shotcrete stressmeter with sensor protective box is provided to protect the stress sensor against the outside shotcrete. CONSTITUTION: A radial sensor part and a tangential sensor part are installed in an armor protective box(10) having four hermetic surfaces, a first side(20) having a hole on a center thereof so that a radial sensor head part(30) is protrusively installed thereon and extended to both sides wider than the other sides of the armor protective box so that a plurality of grooves(40) are formed on the extended part to fix the armor protective box on a rock and etc., a second side(50) symmetrically opposite to the first side and having a screw groove to couple fix an end of the radial sensor part on the armor protective box, a third side(70) perpendicular with the first side and having a hole on a center thereof so that a tangential sensor head(80) is protrusively installed thereon and a fourth side(90) symmetrically opposite to the third side and having a screw groove to couple and fix an end of the tangential sensor part on the armor protective box and a hole to draw out a cable(110) to an outside of the armor protective box.