看了“地質与勘探”1958年第十九期呂宝善同志介紹的老硐素描方法,觉得有欠妥和不足之处,我們願結合我矿斜井的素描提出改进和补充意見。一、硐子拐彎处用直线隔断的問题原文介紹“……硐子不同方向的各段仍在横綫隔断后画直的,並不跟着硐子的方向在图上画成弯弯曲曲的形状……”。这样虽然簡单方便,但会产生图和 After reading the sketch drawing method of the progenitor introduced by Comrade Lv Baoshan in the 19 th, 1958, Geological and Prospecting, we would like to propose improvements and additions in light of the sketches of mine inclined shafts. First, the cave corner with a straight line cut off the problem The original introduction “... ... Cave in different directions of the various sections of the horizontal line is still straight after the cut off, does not follow the direction of the cave in the picture drawn into a curved shape ... ”. Although this is simple and convenient, but will produce maps and