公开(公告)号：US20250154868A1

公开(公告)日：2025-05-15

申请号：US18425890

申请日：2024-01-29

Applicant: Taiyuan University of Technology

Inventor： Guorui Feng ,  Xiaoze Wen ,  Jun Guo ,  Ruipeng Qian ,  Wenbo Huang ,  Jie Zhang ,  Wenming Feng ,  Zi Wang ,  Xu Zhang

IPC: E21C41/18 ,  E21C37/18

Abstract: An electric-pulse fracturing device for hard roof of coal mine based on a self-sealing water bag and an using method thereof are provided. The device includes a power switch, a charging power supply, a current limiting protection resistor, an energy storage capacitor and a high-voltage electric pulse switch connected in sequence. The energy storage capacitor is connected with an end of a gas gap switch, an other end of the gas gap switch is connected with an assembled self-sealing water bag high-voltage electric pulse electrode structure through a high-voltage cable, and the electrode structure is fixed through an assembly rod. The self-sealing water bag high-voltage electric pulse electrode structure includes a self-sealing water bag and an electrode structure capable of focusing shock wave energy, and the number of the self-sealing water bag high-voltage electric pulse electrode structure depends on fracturing effect.