Four-element connection number based set pair analysis for underground goaf risk evaluation
The disposal of underground goaf is a problem of technological difficulty in the mining field in China. A large underground goaf without disposal poses a potential danger of sudden large-scale roof fall. A regular safety assessment of an underground goaf is among necessary measures to insure safe production in underground mines where the openstopping method is adopted. So the assessment of underground goaf has their special reality and important significance. The goaf is a dynamic and complex diversification process along with the working-face removing. There are many factors influencing underground goaf risk evaluation, and their relative essentialities are different. Underground goaf risk evaluation is a complicated uncertainty system issue. Based on the set pair analysis (SPA), a new model for underground goaf risk evaluation was established by four-element connection number in the paper. And an applied example was studied with more satisfactory results. Compared with the other evaluation methods, this model is perfect, the evaluating result is more reasonable and its resolving power is higher. The obtained results were consistent with the practical condition. It is confirmed that the four-element connection number evaluation on underground goaf risk is feasible.
underground goaf risk evaluation model fourelement connection number set pair analyasis (SPA)
Fanxiu Li
College of Chemical and Environmental Engineering Yangtze University Jingzhou Hubei, China
国际会议
2011 International Conference on Security Science and Technology(ICSST 2011) (2011年安全科学与技术国际会议)
重庆
英文
225-228
2011-01-21（万方平台首次上网日期，不代表论文的发表时间）