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近几年来，随着施工工艺的不断改进，许多工程在施工中采用了液压滑模。由于施工的连续性，要求测量工作能及时、准确地控制建筑物的中心线。采用传统的经纬仪投点，在实测中存在一些问题，因此，我们提出用倒锤法测量来控制建筑物的中心线。先后在某铁矿东副井、西副井的液压滑模施工中试用，效果良好。现以西副井施工测量为例介绍如下。
In recent years, with the continuous improvement of construction technology, many projects in the construction of hydraulic sliding mode. Due to the continuity of construction, measurement work is required to control the centerline of the building timely and accurately. Using traditional theodolites to cast points, there are some problems in the actual measurement. Therefore, we propose to control the center line of the building by the hammer-down method. Successively in a iron mine East vice, West vice wells hydraulic sliding mode construction trial, the effect is good. Now the west side of the well construction survey as an example described below.