提出了正态分布无边界扩散模式粉尘浓度预测法，介绍了广州体育馆爆破拆除时的降尘措施，即清理积尘、楼面蓄水、预湿墙体、屋面敷水袋、建筑外设高压管网喷水、搭设防尘排栅和直升机投水弹并产生下向风流等综合防尘技术，实施后减轻了粉尘危害。

A series of technical measurements for dust-laying in demolition blasting of building of a sport center in Guangzhou are introduced in this paper. The comprehensive measurements involve clearage of surface dust, storing up water on floors, moistening walls, water bags on roof, high pressure sprinking water film, smoke controlled by dust barreir and helicopter ventilation. Forecasting dust with diffusion model of normal distribution and non-border was proposed. Harm of dust pollution to urban district has been reduced ever since the application of the model.