尾矿溃坝砂流流动特性及规律模型试验研究
发布时间：2019-02-08 20:24
【摘要】：为提高尾矿库区下游的防灾减灾能力,以北京首云铁矿和尚峪尾矿库为例,开展物理模型试验研究,探究砂流体积分数、溃口形态及下游坡度对溃坝砂流流动特性及规律的影响。试验结果表明,随着溃坝砂流体积分数的增大,砂流到达堆积深度峰值时间越长,峰值就越大;随着溃坝口门的增大,砂流到达堆积深度峰值时间越短,峰值越大,溃口就越大,砂流在下游演进运动的范围就越广,砂流覆盖面积也越大;随着库区下游坡度的增大,砂流到达堆积深度峰值时间越短,峰值越小,下游坡度对砂流演进运动过程及覆盖面积影响也较小。
[Abstract]:In order to improve the ability of disaster prevention and mitigation in the lower reaches of tailing reservoir, taking the Tongyu tailings reservoir of Shouyun Iron Mine in Beijing as an example, a physical model test study was carried out to explore the integral number of sand fluid. The influence of burst shape and downstream slope on flow characteristics and law of dam break sand flow. The experimental results show that with the increase of the integral number of dam break sand fluid, the longer the sand flow reaches the peak value of accumulation depth, the greater the peak value will be. With the increase of dam break gate, the shorter the peak time of sand flow to the accumulation depth, the bigger the peak value, the larger the burst, the wider the range of sand flow evolution and the larger the sand flow coverage area. With the increase of downstream slope, the time of sand flow reaching the peak value of accumulation depth is shorter and the peak value is smaller, and the influence of downstream slope on sand flow evolution and coverage area is also small.
【作者单位】： 西南科技大学环境与资源学院;固体废物处理与资源化省部共建教育部重点实验室;东北大学资源与土木工程学院;
【基金】：国家自然科学基金资助(51004014) 四川省安全监管局(四川煤监局)安全生产科技项目(scaqjgjc_stp_20150011)
【分类号】：TD926.4
本文编号：2418762
[Abstract]:In order to improve the ability of disaster prevention and mitigation in the lower reaches of tailing reservoir, taking the Tongyu tailings reservoir of Shouyun Iron Mine in Beijing as an example, a physical model test study was carried out to explore the integral number of sand fluid. The influence of burst shape and downstream slope on flow characteristics and law of dam break sand flow. The experimental results show that with the increase of the integral number of dam break sand fluid, the longer the sand flow reaches the peak value of accumulation depth, the greater the peak value will be. With the increase of dam break gate, the shorter the peak time of sand flow to the accumulation depth, the bigger the peak value, the larger the burst, the wider the range of sand flow evolution and the larger the sand flow coverage area. With the increase of downstream slope, the time of sand flow reaching the peak value of accumulation depth is shorter and the peak value is smaller, and the influence of downstream slope on sand flow evolution and coverage area is also small.
【作者单位】： 西南科技大学环境与资源学院;固体废物处理与资源化省部共建教育部重点实验室;东北大学资源与土木工程学院;
【基金】：国家自然科学基金资助(51004014) 四川省安全监管局(四川煤监局)安全生产科技项目(scaqjgjc_stp_20150011)
【分类号】：TD926.4
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