目的研究氮封拱顶化工储罐“大小呼吸”过程中的职业危害特征。
Objective To study the occupational hazards characteristics in the process of big and small breathing loss on nitrogen sealed vault tank.
分析了爆破地震波的危害特征，提出砌体房屋的爆破震动破坏机理及模型。
The paper analyse hazards characteristics of blasting seismic and propose blasting vibration model and the failure mechanism of masonry structure.
从工程实际出发，讨论了软土地基上相邻建筑物相互影响的危害特征、影响因素、间隔距离。
The mutual effect of neighborhood building on the soft ground, mainly about risk characters, influence factors and interval distance was discussed.
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