水利学报2016，Vol.47Issue(2)：229-235,7.DOI:10.13243/j.cnki.slxb.20150749
尾矿库坝体溃决演进规律的模型试验研究
Experimental model study on dam break and evolution law of tailings pond
摘要
Abstract
According to the practical project, the tailings pond model was set up based on a self-devel⁃oped dam-break model test system. The dam-break model test was carried out under the continuous rise of saturation line caused by the failure of drainage system in the tailing pond. In the tests, the dam break and evolution process of the tailings pond was observed and measured by the dam displacement measuring device, and the dam-break pattern and dam-failure mechanism were discussed. The results show that the type of dam break belongs to the reversed-stream and traction failure, and the dam break process can be approximately divided into three stages:(1) tension cracks appeared by the dam surface swamping,(2) soil flow failure and local collapse failure, and (3) extensive collapse failure and landslide failure. The first two stages are the induced phases of the collapse and landslide failure. Before soil flow failure the cracks appeared on the surface of the dam and the seepage water overflow from the dam. If the effective measure can be carried out to reduce the saturation line at first time,the extensive soil flow will be avoid⁃ed. The collapse and landslide failure has the characteristics of larger break body and shorter duration, which is difficult to prevent. Comparison of the model test results with the numerical results and the proto⁃type observed data,it is showed that the model test results are in well agreement with the others. The mod⁃el test method in this paper could be used to predict and inverse the dam break process of tailings ponds.关键词
尾矿库/坝体溃决/模型试验/流土破坏/滑坡破坏Key words
tailings pond/dam break/model test/soil flow/landslide failure分类
建筑与水利引用本文复制引用
张力霆,齐清兰,李强,张少雄,刘玉博..尾矿库坝体溃决演进规律的模型试验研究[J].水利学报,2016,47(2):229-235,7.基金项目
河北省自然科学基金项目（E2013210115）；河北省重点学科建设经费资助 （）
