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为解决井下巷道断面形状的测定费力费时问题,研制了具有运算机能并可在现场直接得到测定结果的机械式断面积测定仪。测定仪由带微处理机的运算部分和测定部分组成,可精确测定巷道断面积和周长。 1.测定原理测定仪的测定部分是利用从仪器中心伸出来的旋转臂和通过该臂中心引出来的测定线,每转一定角度,即可测定出仪器中心和巷道帮壁之间的距离(如图1所示)。
In order to solve the problem of laborious and time-consuming determination of cross-sectional shape of underground roadway, a mechanical cross-sectional area measuring instrument that has the computing function and can directly obtain the determination result in the field was developed. The measuring instrument consists of an arithmetic part with microprocessor and a measuring part, which can accurately measure the area and perimeter of the roadway. 1. Measuring principle The measuring part of the measuring instrument utilizes the rotating arm extending from the center of the instrument and the measuring line drawn out through the center of the arm. Each time a certain angle is measured, the distance between the center of the instrument and the wall of the roadway can be measured As shown in Figure 1).