吊锤线摆动对竖井联系测量精度的影响及对策

Impact of vertical line swing on precision of connection surveying in shaft and its countermeasure

通过竖井进行地下工程施工,必定要向地下传递坐标和方位角,这种联系测量工作必须利用在竖井中设置的吊垂线,因此吊垂线的摆动成为坐标或方位角传递的主要误差来源。论文首先分析了由吊垂线的摆动而产生的坐标和方位角传递误差,然后根据吊垂线摆动与阻尼摆动相类似的特点,分析了阻尼摆动的数学特征,提出了通过观测吊垂线的几个连续摆动峰值计算其平衡位置的方法,并进一步说明了在一井定向工作中吊垂线平衡位置的确定方法。通过试验证明,提出的方法精度可靠、操作方便。

In underground construction, coordinates and azimuth angles must be transferred to underground through shaft, so vertical lines must be set in the shaft, then the vertical line swing brought main error in connection surveying. In this paper, the errors of coordinates and azimuth angles brought by vertical line swing were analyzed, then according to the comparability of vertical line swing and damping swing, and based on the mathematical feature of damping swing, the calculation method of balancing position by observing some serial swing peeks of vertical lines was introduced, and then the determination method of balancing position for swing vertical line in single shaft orientation was elaborated. Practice proved that the method was high-precision and easy-operation.