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我们在施工直孔时,常用氢氟酸测斜法测量钻孔顶角.但对测斜玻璃管的度量存在问题.不同操作者划出的刻痕和量出的高差出入很大.去年,我们设计了一种利用校正台直接读数的装置.其结构是:由铜套筒和铜制调节螺杆两部分组成.其套筒d_1同校正台仪器筒内径一样大小,使之能装进仪器筒并能在其内转动(但不能有较大间隙).d_2与氢氟酸测斜保护器内径一致,以能装进测斜玻璃管为适宜.鉴于玻璃管刻痕高低不一,可用调节螺杆加以调节.使用时,只要在玻璃管里装入比刻痕稍低、带颜
In the construction of straight holes, we use the hydrofluoric acid tilt measurement method to measure the angle of the borehole. However, there are problems with the measurement of the inclinometer glass tube. Different operator’s marks and measured heights are very different. Last year We designed a device that uses the calibration table to read directly. Its structure is composed of a copper sleeve and a copper adjusting screw. Its sleeve d_1 is the same size as the inner diameter of the calibration table so that it can be loaded into the instrument. The cylinder can rotate within it (but can’t have bigger gap). D_2 is the same as the inner diameter of the hydrofluoric acid inclinometer protector, so it is suitable to be able to fit into the inclinometer glass tube. In view of the different grades of the glass tube, adjustment is available. The screw is adjusted. When used, as long as the glass tube is slightly lower than the score