在本年度有色金属第一期中,看到了“分层崩落采矿法中假顶合理厚度的初步分析”一文。我对其某些地方有些不同看法,兹提出讨论如下,希同志们指正。(一)作者利用模型试验,所导出的关于冲击力的经验公式(见原文第8页左倒1行),由于忽视了在应用模型法时,对于模型与实物力学性质相似的基本要求,以力学性质不相似的模型所得出的关于冲击力的计算公式,直接运用到生产实际中去,是不够恰 In the first phase of non-ferrous metals this year, I saw the article entitled “A Preliminary Analysis of the Rational Thickness of Fake Roofs in the Hierarchical Caving Mining Law”. I have some different views on some of these places. I am going to discuss the following and hope my comrades correct me. (1) The author’s empirical formula on impact, derived from the model test (see page 8, left and right), neglects the basic requirements for the similarity of the model and the physical mechanics in applying the model method to It is not enough to directly apply the formula for calculating the impact force obtained from the model with dissimilar mechanical properties to the actual production