| 曾晟,周杰,孙冰.急降雨对尾矿堆积子坝溃坝影响的试验研究[J].南华大学学报(自然科学版),2018,32(1):15~18, 39.[ZENG Sheng,ZHOU Jie,SUN Bing.Experimental Study on the Influence of EmergencyRainfall on the Tailings Stacking Dam[J].Journal of University of South China(Science and Technology),2018,32(1):15~18, 39.] |
| 急降雨对尾矿堆积子坝溃坝影响的试验研究 |
| Experimental Study on the Influence of EmergencyRainfall on the Tailings Stacking Dam |
| 投稿时间：2018-01-20 |
| DOI： |
| 中文关键词: 边坡工程 堆积子坝 溃坝 降雨量 相似模拟试验 |
| 英文关键词:slope engineering stacking dam dam break rainfall similar simulation test |
| 基金项目:湖南省研究生科研创新项目(CX2016B435) |
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| 摘要点击次数: 901 |
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| 中文摘要: |
| 为探究尾矿堆积子坝在不同降雨量作用下的溃坝反应,以湖南某尾矿堆积子坝中尾砂为试验材料,采用自制的尾矿子坝溃决破坏试验装置,探究尾矿在下游运移的长度和淹没高度与降雨的关系.试验结果表明:1)不同降雨工况下,尾砂下游运移长度和淹没高度呈现不同状态.在距离原子坝较远处,随降雨量的增加,溃坝运移距离和淹没高度都相应增加.2)试验中降雨强度取0、20、40、60和80 mm/h,近坝体部位降雨强度为60 mm/h时对子坝危害最严重,较远处降雨强度为80 mm/h时对下游危害严重.3)近坝体处,降雨强度为0和20 mm/h时淹没高度较接近,降雨强度为40 mm/h和80 mm/h较接近;稍远处降雨强度60 mm/h和80 mm/h较接近.研究成果为急降雨导致尾矿子坝呈现不同的破坏状态,进而溃坝这一灾害的演进提供参考,对加强子坝防护,增加坝体整体安全等级措施方面提供依据. |
| 英文摘要: |
| In order to explore the tailings stacking dam response in different rainfall and the relationship between the length of the downstream migration,the height of the submergence and the rainfall,the destructive testing device of tailings dam was developed.And the experiment used tailings sand in a tailings stacking dam in Hunan.The experimental results show that:1) under different rainfall conditions,the length of the downstream migration and the height of the submergence are different.At the distance from the tailings dam,the migration distance and the submerged height of the dam increase correspondingly with the increasing rainfall.2) the intensity of rainfall in the test is 0,0,40,0 and 80 mm/h.Near the dam,the most serious hazard to sub dam is when the rainfall intensity is 60 mm/h.When the rainfall intensity is 80 mm/h,it damages the downstream seriously.3) the submergence height is closer near the dam when the rainfall intensity is 0 and 20 mm/h.The submergence height is closer near the dam when the rainfall intensity is 40 mm/h and 80 mm/h.The submergence height is closer far away from the dam when the rainfall intensity is 60 mm/h and 80 mm/h.The research provides a reference for the evolution of tailings dam break due to the sudden rainfall.It provides a basis for strengthening the protection of sub dam and increasing the safety level of the dam. |
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