Water pressure-blasting coupling pre-splitting top-cutting pressure relief device

• Main Authors: DONG YALUN, ZHAO ZIHAO, ZHANG JIANQIANG, LU CAIPING, CHENG GE, CHENG CHUANCHAO, LYU RUIXIANG, BAI LINGUO
• Format: Patent
• Language: Chinese; English
• Published: 19.01.2024
• Subjects: AMMUNITION; BLASTING; EARTH DRILLING; FIXED CONSTRUCTIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; MINING; MINING OR QUARRYING; WEAPONS

The utility model relates to a water pressure-blasting coupling pre-splitting top-cutting pressure relief device. In order to fill the blank in the prior art, the water pressure-blasting coupling pre-splitting top-cutting pressure relief device comprises an energy-gathered blasting pipe, a front partition plate, a rear partition plate, explosives and a detonator are arranged in the energy-gathered blasting pipe, the water pressure-blasting coupling pre-splitting top-cutting pressure relief device further comprises a water pressure fracturing pipe, the front end of the water pressure fracturing pipe is closed, the rear end of the water pressure fracturing pipe is fixedly connected with the front end of the energy-gathered blasting pipe, and a flow guide pipe is arranged in the water pressure fracturing pipe. A plurality of radial branch pipes are arranged at the front part of the flow guide pipe, the radial branch pipes are communicated with the jet holes in the outer circumference of the hydraulic fracturing