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地表负荷改变对地倾斜观测的影响虽有一些实例,但大负荷量试验尚无先例。我们通过佘山台倾斜仪南面的蓄水池抽水进行了大负荷试验,结果表明,负荷改变对倾斜观测量的影响达0.034角秒左右。观测结果与理论分析结果基本一致。
Although there are some examples of the influence of surface load change on the ground tilt observation, there is no precedent for the large load test. We conducted a large-scale load test by pumping water from the reservoir south of the Sheshan platform tiltmeter. The results show that the influence of the load change on the tilt observation is about 0.034 arcseconds. Observations and theoretical analysis of the results are basically the same.