通过理论分析，建立了喷淋冷却与自然排烟耦合作用下火灾烟气层沉降的理论预测模型，并开展了相应的实验，把实验结果作为输入参数代入模型，得到了不同实验条件下烟气层的沉降结果。结果表明，喷淋冷却与自然排烟耦合作用下，烟气沉降速度相差很小；喷淋作用后，烟气层最终沉降高度降低；随着压力的增大，烟气层最终沉降高度相差较小。

A mathematical model was developed for predicting smoke filling combined with sprinkler cooling and natural smoke exhaust. Experiments were carried out to validate the model, with experimental results, smoke filling characteristics are obtained. Results showed that smoke filling velocity combined with sprinkler cooling and natural smoke exhaust has a very small difference; the final height of smoke reduces with sprinkler cooling; for the range of pressure studied in the present investigation, we found only a small effect of pressure on the final height of smoke.

李思成（1977－），男，山东郓城县人，中国人民武装警察部队学院讲师，主要从事建筑火灾预防与控制研究工作