Rock burst prevention based on dissipative structure theory

• Published in: International journal of mining science and technology 2012-03, Vol.22 (2), p.159-163
• Main Authors: Song, Dazhao, Wang, Enyuan, Li, Nan, Jin, Mingyue, Xue, Shipeng
• Format: Article
• Language: English
• Subjects: Dissipative structure; Electromagnetic radiation; Entropy change; RAS; Rock burst prevention; 岩爆; 岩石破裂; 有序结构; 熵方程; 耗散结构理论; 防治工程; 预防
• ISSN: 2095-2686
• DOI: 10.1016/j.ijmst.2011.08.004

Dynamic collapses of deeply mined coal rocks are severe. In order to explore new ideas for rock burst pre- vention, the relationship between entropy equations and dissipative structure was studied, and a con- cept-rock burst activity system （RAS） was proposed and its entropy was analyzed. The energy features of RAS were analyzed, and the relationship between electromagnetic radiation （EMR） intensity E and dis- sipated energy Ud was initially established. We suggest that rock burst normally happens only when d1S - 〈〈 -des in RAS; RAS is the dissipative structure before collapse, and after which it become a new orderly structure, i.e., a ＂dead＂, a statically orderly structure. We advanced that the effective way to prevent rock burst is to introduce entropy to the system for it keeps the system away from the dissipative structure. E and Ud of RAS are positively related, which is used as a bridge between dissipative structure theory and rock burst prevention engineering applications. Based on this, and using the data of rock burst prevention for working face No. 250205up of Yanbei coal mine, an engineering verification for the dissipative struc- ture of RAS was carried out. which showed good results.