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本文阐述了在震害预测中采用分块抽样方法的一般原理，对于确定抽样样本总额的方法和样本总额在分块抽样中的理想分配进行了讨论。文中以乌鲁木齐市钢筋混凝土房屋的震害预测为对象，说明了分块抽样法的实际应用及其对于随机抽样法的优越性。文中对采用逐栋调查和分块抽样调查所得到的震害预测结果进行了对比，论证了这一抽样方法的可行性。
This paper describes the general principle of using block sampling in earthquake damage prediction and discusses the method of determining the total sample size and the ideal allocation of sample size in block sampling. In this paper, the earthquake damage prediction of reinforced concrete houses in Urumqi is taken as an example, and the practical application of block sampling method and its superiority to random sampling method are illustrated. The paper compares the prediction results of earthquake damage obtained by using the survey of each building and the block sampling survey, and demonstrates the feasibility of this sampling method.