Structure of slackening type blasting mat

Abstract

The present invention relates to a structure of slackening type blasting mat comprising a steel plate member having thickness capable of bearing a blasting pressure of explosive inputted to blasting hole; an elastic member which is fixedly attached by bolt along bottom edge of said steel plate member and isolating what blasting noise and blasting gas and flying away material of explosive inputted into each blasting hole of blasting region are discharged out to exterior; and a weight reinforcing member which is welded to top surface of said steel plate member in a structure as grid window frame, and which is made of steel frame material having heavy weight capable of bearing a blasting pressure.

Dependencies are inferred from the claim text.