Rock burst risk and its real-time warning cloud picture technique
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摘要: 采用拋物線型隸屬函數分別建立了基于應力值和應力變化速度的沖擊危險性指數計算公式,利用最大隸屬度原則計算多因素沖擊危險性指數,使用云圖的方式全面、直觀地反映工作面支承壓力及沖擊危險性的空間分布規律,最終建立了基于云圖的沖擊危險性預警系統.該系統已在全國20多個具有沖擊危險性的煤礦得到應用,并取得良好的效果.Abstract: Two rock burst risk index functions were built based on stress and stress change rate respectively by using a parabolic membership function model. The burst risk index with multiple factors was calculated under the maximum membership degree principle. The spatial distributions of bearing pressure and burst risk of the working face were demonstrated comprehensively and directly by cloud pictures. Finally a cloud-based risk early warning system was obtained. This system had been applied in more than 20 coal mines with risk bursts and achieved good results.
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Key words:
- rock bursts /
- risk assessment /
- real time systems /
- monitoring
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