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- Title
爆破地震条件下露天煤矿防洪坝动力响应分析.
- Authors
杨汉宏; 周永利; 李胜林
- Abstract
In order to prevent castblasting Heidaigou surface mine safety mine flood control dam damage, finite element numerical simulation technology based on FLAC3D,it was established in anhydrous conditions and calculation scheme of water conditions under the two conditions of Xigeben safety and stability of flood control dam, safety parameters were determined by field monitoring and numerical simulation, the establishment of the dynamic response model under the condition of surface mine flood control dam blasting vibration, studies the mechanism of flood control dam dynamic response, the blasting vibration wave frequency and the risk of lateral critical damage threshold velocity.The results showed that the most unfavorable to the maximum flood control dam frequency response of the structure 2 Hz; the dam in the cast blasting, corresponding to the dam transverse wave direction threshold velocity was 24 cm/s, vertical threshold speed was 13 cm/s;under the condition of water, throwing blasting, the damage threshold of lateral critical speed was 9.6 cm/s.
- Publication
Coal Science & Technology (0253-2336), 2017, Vol 45, Issue 12, p30
- ISSN
0253-2336
- Publication type
Article
- DOI
10.13199/j.cnki.cst.2017.12.006