Inventor
SONG DAZHAO
CN4 patents
Patents
4 patentsUS10884154B2Jan 5, 2021
Monitoring and forewarning method for coal-rock dynamic disasters based on electromagnetic radiation and earth sound
UNIV BEIJING SCIENCE & TECHNOLOGY2 citations67
US11567230B1Jan 31, 2023
Direction-finding and positioning system of electromagnetic emission of coal or rock fracture
UNIV BEIJING SCIENCE & TECHNOLOGY3 citations65
US11043101B2Jun 22, 2021
Multi-system, multi-parameter, integrated, comprehensive early warning method and system for coal and rock dynamic disaster
UNIV BEIJING SCIENCE & TECHNOLOGY2 citations64
US11397236B2Jul 26, 2022
Method of locating coal-rock main fracture by electromagnetic radiation from precursor of coal-rock dynamic disaster
UNIV BEIJING SCIENCE & TECHNOLOGY1 citations53