【摘要】：根據(jù)某高速鐵路隧道貫通后二等水準(zhǔn)測(cè)量數(shù)據(jù),分別對(duì)正常水準(zhǔn)面不平行、重力異常未改正及改正后的數(shù)據(jù)進(jìn)行閉合差統(tǒng)計(jì)、平差計(jì)算對(duì)比,提出了在緯差較大的高海拔山區(qū)進(jìn)行兩項(xiàng)改正的必要性。以后續(xù)的CPⅢ高程建網(wǎng)測(cè)量為例,驗(yàn)證了進(jìn)行兩項(xiàng)改正之后二等水準(zhǔn)測(cè)量控制點(diǎn)高程的正確性。
[Abstract]:According to the secondary leveling data of a high speed railway tunnel, the closed difference statistics of the normal leveling plane, the uncorrected gravity anomaly and the corrected data are carried out respectively, and the adjustment calculation is compared. It is necessary to carry out two corrections in high altitude mountain areas with large latitude difference. As an example, the CP 鈪，

本文編號(hào)：2388702