WATERPROOF STRUCTURE OF VIBRATION ABSORBER FOR REDUCING AND ISOLATING BLAST VIBRATION IN DOWNTOWN AREA

摘要

The waterproof structure of the blast vibration damping material according to the present invention inserted into a line drilling hole formed to prevent the blasting vibration is transmitted to the outside, the dustproof material inserted in the longitudinal direction in the line drilling hole; A tarpaulin provided to completely surround at least the bottom of the dustproof material; And one or more compression bands for compressing the tarpaulin toward the outer surface of the dustproof material. The waterproof structure is provided with an upper tarpaulin to completely wrap the upper end of the dustproof material; And an upper compression band for compressing the upper tarpaulin toward the outer surface of the dustproof material, or the tarpaulin may be configured to seal the lower part, to cover the entire dustproof material, and to seal the upper end by a knot. A predetermined amount of filler is filled between the outer circumferential surface of the dustproof material and the inner circumferential surface of the line drilling hole to press the outer circumferential surface of the dustproof material to prevent the dustproof material from rising by buoyancy.;Line Driller, Tarpaulin, Dustproof Material, Filling