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1、四等水准测量Stillwatersrundeep.流静水深流静水深,人静心深人静心深Wherethereislife,thereishope。有生命必有希望。有生命必有希望“后后-后后-前前-前前”观测法观测法后视尺后视尺前视尺前视尺下丝读数下丝读数下丝读数下丝读数1.7431.7431.7431.743上丝读数上丝读数上丝读数上丝读数1.3151.3151.3151.315中丝读数中丝读数中丝读数中丝读数1.5291.5291.5291.529中丝读数中丝读数中丝读数中丝读数6.2146.2146.2146.214下丝读数下丝读数下丝读数下丝读数1.1131.1131.1131.113上丝读
2、数上丝读数上丝读数上丝读数0.6850.6850.6850.685中丝读数中丝读数中丝读数中丝读数0.8990.8990.8990.899中丝读数中丝读数中丝读数中丝读数5.6865.6865.6865.686四等水准测量数据四等水准测量数据测测站站编编号号点号点号后后尺尺前前尺尺下丝下丝上丝上丝下丝下丝上丝上丝后视距后视距前视距前视距视距差视距差d(m)d(m)方向方向及尺及尺号号水准尺读数水准尺读数 ( m)黑面黑面红面红面K+黑黑-红红平均平均高差高差(m)备备注注K1=4.687K2=4.787四等水准测量记录四等水准测量记录(1)(5)(2)(6)(9)(10)(11)(12)后后前前后后-前前(3)(7)(4)(8)(15)(16)(13)(14)(17)(18)121.7431.31542.8 0.00.6250.06256.3-1.11.1130.68542.8 0.01.0340.46057.4-1.1后后1前前2后后-前前后后2前前1后后-前前1.5290.899+0.6306.2145.686+0.5280.3660.747-0.3815.1515.434-0.283+2 0+2+0.6290+20+2-0.3820BM1TP1TP1BM2四等水准测量的主要技术依据四等水准测量的主要技术依据