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目前我国观测拱坝水平位移的导线是安装在白山拱坝廊道中的精密边角导线。由于廊道中旁折光影响较大,很难指望测角精度能进一步提高。据此,研制了精密弦矢导线的有关设备。与精密边角导线相比,精度有较大提高。文中较详细地介绍了弦矢导线的布置,多种仪器设备。重点介绍了精度能达到0.03mm的G05铟瓦测距仪。
At present, the guide wire for horizontal displacement of arch dam in our country is the precision corner wire installed in the gallery of Baishan arch dam. As the corridor next to the larger impact of refraction, it is difficult to expect the angle accuracy can be further improved. Accordingly, the development of precision chord guide wire related equipment. Compared with the precision corner wire, the accuracy is greatly improved. In this paper, a more detailed introduction of the chord vector wire arrangement, a variety of equipment. The G05 indium tile range finder with the precision of 0.03mm is mainly introduced.