数字化水准仪应用于跨断层水准测量的性能分析

The Performance Analysis of Leveling Across Fault with Digital Level

跨断层水准观测是一种高精度的测量工作,对水准仪的精度、稳定性等方面提出了较高的要求,因此仪器老化所产生的仪器性能衰减成为行业内普遍关注的问题。本文分析了Trimble DiNi12型数字水准仪在整个生命周期中的第1年、第4年和第7年的产出数据,结果表明这种数字水准仪在使用的前期性能衰减快,中后期可保持相对稳定的状态。Trimble DiNi12型数字水准仪与Leica DNA03型数字水准仪分别投入使用的第1年内测段往返测闭合差表明,Trimble DiNi12型水准仪所能达到的实际精度优于Leica DNA03型水准仪。进一步分析可知,Trimble DiNi12型水准仪在稳定性上也有一定优势,这和实际的使用情况相符。

The Leveling across fault observation is a kind of high precision measurement which puts forward higher requirements on the accuracy and stability of the level gauge. Therefore, the performance attenuation caused by the instrument aging has become a common concern in the industry. In this paper, the output data of Trimble DiNi12 electronic level gauge in the whole life cycle in the first year, the fourth year and the seventh year are analyzed. The results show that the performance of the digital level decays quickly in the early stage and can keep relatively stable in the middle and late stage. In the first year after respectively being put into used, the closure difference between Trimble DiNi12 and Leica DNA03 of the inner test section in the first year indicates that the actual accuracy achieved by the Trimble DiNi12 is superior to Leica DNA03. Further analysis shows that the Trimble DiNi12 also has certain advantages in stability, which is consistent with the actual use.