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在勾绘倾斜岩层地质界线时,是借助于岩层产状和地形地貌来绘制的.以往常用的如“相同相反,相反相同”以及“V型”法则等,对不同比例尺的地质测量工作,有时容易出错,且从理论上也无从查正.因而我们在填图中改用余切法.实践证明,此法对编绘不同性质的结构面的构造线也是适用的.一余切法原理图解余切原理如图1所示,从图中易知AC=H·ctgα式中AC为等截距(AC=CE=…);
When drawing the geologic boundary of inclined rock strata, it is drawn by means of rock formation and topography.Generally speaking, the same commonly used methods such as “the same on the contrary, the opposite” and the “V-shape” Measurement work is sometimes error-prone, and theoretically impossible to correct, so we use the cut method in the mapping. Practice has proved that this method for the construction of structural lines of different nature of the line is also applicable. Cut principle diagram The principle of cut is shown in Figure 1, from the figure easy to understand AC = H · ctgα where AC is equal to the intercept (AC = CE = ...);