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在研究矿山排土场滑坡泥石流的危害时,模型试验能够较为准确地预测泥石流危害的影响范围。以四川盐源平川铁矿排土场为原型,应用相似试验原理建立该排土场某一滑坡体的试验模型,进行滑坡泥石流试验。试验中泥石流在距离排土场滑坡体下游3.6 m处停止堆积运动,泥深最大值为4 cm(断面1),最小值在为0.5 cm(断面3),但是泥深的变化呈现出一定的波动性,各断面的泥深并非到达最大值后就持续减小。根据相似试验的预测,平川铁矿排土场下游的部分重要设施会受到滑坡泥石流的破坏,确定了危害影响范围,评估了排土场下游设施可能的受灾程度。
When studying the hazards of landslide debris flow in mine dump, the model test can predict the influence range of debris flow hazards more accurately. Taking the Yichuan Huanchuan iron ore dump of Sichuan Province as a prototype, a test model of a landslide body in the dump site was set up based on the similarity test principle, and the landslide debris flow test was carried out. In the experiment, the debris flow ceased to accumulate at a distance of 3.6 m from the downstream of the dump site. The maximum mud depth was 4 cm (section 1) and the minimum was 0.5 cm (section 3). However, the mud depth showed a certain change Volatility, mud depth of each section does not reach the maximum value continues to decrease. According to the prediction of similar tests, some important facilities downstream of the Pingchuan iron ore dump will be damaged by landslide debris flow, the scope of the damage will be confirmed, and the possible damage degree of the downstream facilities of the dump will be evaluated.