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金县台钢管基岩标与土层标对比观测资料的补充研究表明,钢管基岩际是一种稳定性较好的水准标石.在排除地下水等干扰、提高成果精度等方面都比土层标有较大的优点.该台水准测线附近存在地表形变漏斗的迹象.台站东西向水准高差的趋势性变化,可能与复盖层内地下水位的变化或抽用地下水有关.
Supplementary studies on contrast data of rock and soil standard between Jinxiantai steel pipe foundation and soil stratum show that the interbed of steel pipe is a kind of standard rock with good stability, which is better than that of soil layer in eliminating the interference of groundwater and improving the precision of the result There is a sign of greater merit in that there is evidence of surface deformation funnels near the leveling line.The trend of the horizontal elevation of the east-west level of the station may be related to the change of groundwater level in the overburden or the pumping of groundwater.