【摘要】：為提高尾礦庫區(qū)下游的防災(zāi)減災(zāi)能力,以北京首云鐵礦和尚峪尾礦庫為例,開展物理模型試驗研究,探究砂流體積分?jǐn)?shù)、潰口形態(tài)及下游坡度對潰壩砂流流動特性及規(guī)律的影響。試驗結(jié)果表明,隨著潰壩砂流體積分?jǐn)?shù)的增大,砂流到達(dá)堆積深度峰值時間越長,峰值就越大;隨著潰壩口門的增大,砂流到達(dá)堆積深度峰值時間越短,峰值越大,潰口就越大,砂流在下游演進(jìn)運動的范圍就越廣,砂流覆蓋面積也越大;隨著庫區(qū)下游坡度的增大,砂流到達(dá)堆積深度峰值時間越短,峰值越小,下游坡度對砂流演進(jìn)運動過程及覆蓋面積影響也較小。
[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.
【作者單位】： 西南科技大學(xué)環(huán)境與資源學(xué)院;固體廢物處理與資源化省部共建教育部重點實驗室;東北大學(xué)資源與土木工程學(xué)院;
【基金】：國家自然科學(xué)基金資助(51004014) 四川省安全監(jiān)管局(四川煤監(jiān)局)安全生產(chǎn)科技項目(scaqjgjc_stp_20150011)
【分類號】：TD926.4

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