On the afternoon of April 29, the National Coal Mine Safety Administration (NCMSA) held a video conference on determining the production capacity of severely damaged Mines. He Manchao, professor of CUMTB and academician of Chinese Academy of Sciences, was invited to deliver a speech in the main venue. About 255 staff members from 23 provincial departments of Emergency Management, Safety Administrations, Energy Administrations and other relevant departments attended the meeting.

AcademicianHe Manchao reported a survey of 30 typical rock burst mines in China in 2019. Through a large number of research data and experiments,he proposed that reducing the mining speed and scientifically verifying the production capacity are the scientific choices for the prevention and control of rock burst under the current mining system;Gob-side entry retention by roof cuttingis an important measure to prevent rock burst and realize safe mining.