摘要
三心拱巷道断面的图形决定于三要素ｆ、Ｒ、ｒ．常规三心拱图形Ｒ和ｒ均由于小数位数太多而难于记忆，也不便于作图．为此，对Ｒ和ｒ的取值稍加改进，使得三要素ｆ、Ｒ、ｒ均能用比较简便易记的式子来表达，方便作图，并使改进后的图形仍然与常规三心拱图形十分接近，仍然保持三心拱巷道断面的基本特点．改进后，不但没有影响巷道拱部的结构强度，甚至还会使得巷道拱轴更合理．
The figuration of triple arched roadway sections is dependent on three elemen-tary factrs,i.e.f,R and r, The common R and r values of the triple arched roadway are dif-ficult to be remembered due to a great number of their decimal places. This also causes trou-bles for drawing a diagram. Thereby an alteration in valuation of R and r is made for a sim-ple expression to f. R and r. The figure formed by the alteration comes very close to the pre-vious one while the basic features of the triple arched roadway sections is still unchanged.The alteration does not affect the structural strength of the arch of the roadway but have the arch axles more rational.
出处
《中国锰业》
北大核心
1995年第3期10-13,9,共5页
China Manganese Industry
