尾矿库渗流溃坝模型试验研究尾矿库渗流溃坝模型试验研究
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第28卷第5期 2019年10月
doi： 10. 3969/j. issn. 1005-7854. 2019. 05. 003
矿冶
MINING & METALLURGY
尾矿库渗流溃坝模型试验研究
Vol. 28, No. 5 October 2019
杨玉婷王光进艾敏赵怀刚 许志发 杨安银
(昆明理工大学国土资源工程学院，昆明650093)
分级现象。以上研究成果能为矿山的防灾减灾提供理论基础。
关键词：尾矿库；渗流破坏；溃坝过程；溃口发展；尾砂沉积
中图分类号：TD926. 4
文献标志码：A
文章编号：1005-7854 (2019) 05-0015-06
Experimental study on dam break model of seepage in tailings reservoir
YANG Yu-ting WANG Guang-jin Al Min ZHAO Huai-gang XU Zhi-fa YANG An-yin
(Faculty of Land Resources Engineering, Kunming University of Science and Technology, Kunming 650093, China)
在自重作用下发生沉降和垮塌，并向上游呈牵引式发展，随后库内水流漫过坝顶垮塌部分的最低点，导致溃口的形成，坝体破
坏模式由逆向牵引破坏向溢流侵蚀破坏转变；在溃坝的不同时刻溃口发展是不同的，初中期以下切为主，后期以横向展宽为
主；由于水流的分选作用，下泄泥砂在坝体下游的沉积随演进距离的增加，表现出由粗到细的规律，且不同位置出现了粒径的
Abstract： Based on the engineering background of a tailings reservoir in Yunnan, a self-made tailing reservoir dam-breaking experimental device was used to carry out dam-breaking model test and analyze the dam-breaking process9 the development of the dam burst, and the law of sediment deposition under the seepage failure. The results show that the movable particles in the voids are taken away by the permeated water flow? causing the initial percolation channels to build up and expand, forming a concentrated flow channel, and the overflow and swamping occurred at the dam overflow point. With the expansion of the concentrated seepage passage of the dam body, the saturated dam at the upper part of the outfall point will settle and collapse under the action of its own weight, and the upstream dam body will develop into a traction type, and then the water flow in the reservoir will reach the lowest point of the collapsed part of the dam roof, and lead to the formation of a breach, the dam failure mode of dam collapse from reverse traction damage to overflow erosion damage. The development of the breach is different at different times of the dam-break. On the early and middle stages9 the development of the breach is mainly below the cut, and the later it is the horizontal broadening. Due to the sorting effect of water flow? the deposition of silt in the lower reaches of the dam body increases with the evolution distance, showing a coarse-to-fine sedimentary rule, and a grading phenomenon of particle size appears at cHfferent positions. The above research results can provide a theoretical basis for mine disaster prevention and mitigation. Key words: tailings reservoir； seepage failure； dam-break process； dam burst development； tail sand deposition
源自文库
摘 要：以云南某尾矿库为工程背景，采用自制的尾矿库溃坝试验装置，开展尾矿库室内堆(溃)坝模型试验研究，分析在
渗流破坏情况下尾矿库溃坝过程、溃口发展、下泄泥砂沉积规律。结果表明：空隙中的可动颗粒被渗出水流带走，造成初始渗
流通道建立并扩大，坝肩中部出现“砂流溢出”和“沼泽化”现象；随着坝体集中渗流通道的扩展，出渗点位置上部饱和坝体
doi： 10. 3969/j. issn. 1005-7854. 2019. 05. 003
矿冶
MINING & METALLURGY
尾矿库渗流溃坝模型试验研究
Vol. 28, No. 5 October 2019
杨玉婷王光进艾敏赵怀刚 许志发 杨安银
(昆明理工大学国土资源工程学院，昆明650093)
分级现象。以上研究成果能为矿山的防灾减灾提供理论基础。
关键词：尾矿库；渗流破坏；溃坝过程；溃口发展；尾砂沉积
中图分类号：TD926. 4
文献标志码：A
文章编号：1005-7854 (2019) 05-0015-06
Experimental study on dam break model of seepage in tailings reservoir
YANG Yu-ting WANG Guang-jin Al Min ZHAO Huai-gang XU Zhi-fa YANG An-yin
(Faculty of Land Resources Engineering, Kunming University of Science and Technology, Kunming 650093, China)
在自重作用下发生沉降和垮塌，并向上游呈牵引式发展，随后库内水流漫过坝顶垮塌部分的最低点，导致溃口的形成，坝体破
坏模式由逆向牵引破坏向溢流侵蚀破坏转变；在溃坝的不同时刻溃口发展是不同的，初中期以下切为主，后期以横向展宽为
主；由于水流的分选作用，下泄泥砂在坝体下游的沉积随演进距离的增加，表现出由粗到细的规律，且不同位置出现了粒径的
Abstract： Based on the engineering background of a tailings reservoir in Yunnan, a self-made tailing reservoir dam-breaking experimental device was used to carry out dam-breaking model test and analyze the dam-breaking process9 the development of the dam burst, and the law of sediment deposition under the seepage failure. The results show that the movable particles in the voids are taken away by the permeated water flow? causing the initial percolation channels to build up and expand, forming a concentrated flow channel, and the overflow and swamping occurred at the dam overflow point. With the expansion of the concentrated seepage passage of the dam body, the saturated dam at the upper part of the outfall point will settle and collapse under the action of its own weight, and the upstream dam body will develop into a traction type, and then the water flow in the reservoir will reach the lowest point of the collapsed part of the dam roof, and lead to the formation of a breach, the dam failure mode of dam collapse from reverse traction damage to overflow erosion damage. The development of the breach is different at different times of the dam-break. On the early and middle stages9 the development of the breach is mainly below the cut, and the later it is the horizontal broadening. Due to the sorting effect of water flow? the deposition of silt in the lower reaches of the dam body increases with the evolution distance, showing a coarse-to-fine sedimentary rule, and a grading phenomenon of particle size appears at cHfferent positions. The above research results can provide a theoretical basis for mine disaster prevention and mitigation. Key words: tailings reservoir； seepage failure； dam-break process； dam burst development； tail sand deposition
源自文库
摘 要：以云南某尾矿库为工程背景，采用自制的尾矿库溃坝试验装置，开展尾矿库室内堆(溃)坝模型试验研究，分析在
渗流破坏情况下尾矿库溃坝过程、溃口发展、下泄泥砂沉积规律。结果表明：空隙中的可动颗粒被渗出水流带走，造成初始渗
流通道建立并扩大，坝肩中部出现“砂流溢出”和“沼泽化”现象；随着坝体集中渗流通道的扩展，出渗点位置上部饱和坝体