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时间:2019-08-01
《导线内业计算和水准内业计算习题》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、习题BM1BM2-3.001m1.4km6.3km3.5km1.719m-4.740mHBM1=163.751mHBM2=157.732mPQ例题:方位角的推算123459513065128122123012345已知:α12=300,各观测角β如图,求各边坐标方位角α23、α34、α45、α51。解:α23=α12-β2±1800=800α34=α23-β3±1800=1950α45=2470α51=3050α12=300(检查)等精度观测一个三角形的三个内角α、β、γ,已知测角精度为20″,(1)求三角形角度闭合差的中误差。(2)若将闭合差平均分配到三个角上,
2、求经改正后的三角形各内角的中误差。在相同的观测条件下,对某段距离测量了五次,各次长度分别为:121.314m,121.330m,121.320m,121.327m,121.335m。试求:(1)该距离算术平均值;(2)距离观测值的中误差;(3)算术平均值的中误差;(4)距离的相对误差。今用钢尺丈量得两段距离:S1=60.25m±6cm,S2=80.30m±7cm,S3=102.50m±8cm,距离S4=(S1+S2+S3)/3,分别计算S4的距离值、中误差和相对误差。从图上量得点M的坐标XM=14.22m,YM=86.71m;点A的坐标为XA=42.34m,YA=85.00m。试计算M、
3、A两点的水平距离和坐标方位角。例题:附合导线的计算124.08164.10208.5394.18147.44ABCDXB=1230.88YB=673.45XC=1845.69YC=1039.9843171241600180133617822301934400181130020454301803248B1234CAB567CD8图表:附合导线坐标计算表点号转折角(右)改正后转折角方位角边长D(米)坐标增量(米)XY改正后增量(米)XY坐标(米)XY点号AB5678CD1801336178223019
4、34400181130020454301803248124.08164.10208.5394.18147.44B5678C1230.88673.451845.691039.98+8+8+8+8+8+8180134417822381934408181130820454381803256111901124317124160043032844405030564229433444856+90.66+116.68+178.85+81.79+146.92+84.71+115.39+46.70+107.23+12.38738.33+614.90+366.41+614.81+366.53x=+0.09
5、y=0.12=x+y=0.150²²K==<D1490012000-2-2-2-1-2+2+3+3+2+2+12-9+90.64+116.66+178.83+81.78+146.90+84.73+115.42+107.26+46.72+12.40+614.81+366.531321.521438.181617.011698.79758.18873.60980.861027.5811190024理=11190112=测理=48容=406=98115.10100.09108.3294.3867.85A1234XA=536.27mYA
6、=328.74mA1484318A12341122224970300105170610146241233006K==<D1400012000例题:闭合导线坐标计算表点号转折角(右)改正后转折角方向角边长D(米)坐标增量(米)XY改正后增量(米)XY坐标(米)XY点号A1234A19703001051706101462412330061122224+12+12+12+12+124843181314006206224828436123410554484318485.47+0.09-0.08x=+0.09y=
7、0.08=x+y=0.120²²5395900理=5400000=测理=60容=405=8954000009703121051718101463612330181122236115.10100.09108.3294.3867.58+75.93-66.54-97.04+23.80+63.94+86.50+74.77-48.13-91.33-21.89-2-2-2-2-1+2+2+2+
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