EP 4310440 A1 20240124 - EXPLOSIVE LOADING METHOD, AND DETONATION-USE EXPLOSIVE MOUNTING BODY
Title (en)
EXPLOSIVE LOADING METHOD, AND DETONATION-USE EXPLOSIVE MOUNTING BODY
Title (de)
SPRENGLADUNGSVERFAHREN UND SPRENGBEFESTIGUNGSKÖRPER ZUR VERWENDUNG
Title (fr)
PROCÉDÉ DE CHARGEMENT D'EXPLOSIF ET CORPS DE MONTAGE D'EXPLOSIF À USAGE DE DÉTONATION
Publication
Application
Priority
- JP 2021044971 A 20210318
- JP 2022011032 W 20220311
Abstract (en)
Provided is an explosive loading method that enables smooth loading of a detonation-use explosive into a blasting hole drilled into a working surface of a tunnel in a tunnel blasting process. This explosive loading method includes: a step in which a loading rod holds a detonation-use explosive mounted body as a result of inserting the distal end of the loading rod into a hollow section of the detonation-use explosive mounted body which is formed by mounting a detonation-use explosive on the inside of the rear end of a cylindrical holding body so that a hollow section remains; and a detonation-use explosive loading step in which the detonation-use explosive mounted body held by the distal end of the loading rod is loaded into the blasting hole. The front end of the cylindrical holding body of the detonation-use explosive mounted body is provided with a spindle-shaped guide part that has a shape which is tapered toward the distal end of the detonation-use explosive mounted body.
IPC 8 full level
CPC (source: EP)
E21D 9/006 (2013.01); F42D 1/08 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
EP 4310440 A1 20240124; JP WO2022196572 A1 20220922; WO 2022196572 A1 20220922
DOCDB simple family (application)
EP 22771320 A 20220311; JP 2022011032 W 20220311; JP 2023507066 A 20220311