Piston-type explosive loading and blasting structure and method for hard rock cable pit

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United States of America Patent

PATENT NO 11988494
APP PUB NO 20240068790A1
SERIAL NO

17954766

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Abstract

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Provided is a piston-type explosive loading and blasting structure for a hard rock cable pit. The structure includes a first-step cut provided at a center of an excavation section and second-step cuts provided on a periphery of the first-step cut; and piston-type explosive loading structures are used for explosives in the first-step cut and the second-step cuts. According to the piston-type explosive loading structures in the present disclosure, due to plastic plugging of stemming and fixed elastic plugging of two disc steel plates, time of energy such as stress waves and explosive gas generated after the explosives explode acting on surrounding rocks is obviously prolonged, rock mass is fully broken, and loose blasting is formed without throwing.

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Patent Owner(s)

Patent OwnerAddress
CHINA RAILWAY 18 BUREAU GROUP CO LTD300222 LIULIN HEXI DISTRICT TIANJIN TIANJINCITY TIANJINCITY 300222

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Sun, Jinshan Tianjin, CN 3 0
Zhang, Xiangping Tianjin, CN 10 11
Zhang, Xin Tianjin, CN 895 4200

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