GPS控制测量技术总结.doc

四川路桥集团叙永至古蔺高速公路A合同段第四分部 控制测量技术总结A合同段第四分部二0一三年七月二十一日目录1概述1.1工程概况1.2 技术规范1.3 技术依据2测量实施2.1 测量准备2.2 控制点选点2.3 控制点埋设2.4、数据采集2.5、数据传输2.6、预处理2.7、基线解算2.8、GPS网平差3提交资料附件1 控制点成果表附件2 控制点示意图附件3 平差报告附件4 控制点点之记附件5 GPS观测手薄四川路桥集团叙永至古蔺高速公路A合同段第四分部控制测量技术总结1、 概述1.1、工程概况 叙永（震东）至古蔺（二郎）高速公路A合同段第四分部地处德耀镇集美村四组至德耀镇集美村1组之间，里程为K9+670K15+819，全长6146米。该段地形属于盆周山区向云贵高原北部过度地带，整个区域内地形复杂、山势陡峭、沟谷纵横。标段范围内有桥梁、路基、隧道、涵洞等工程，为了方便以后施工需要依据业主提供的已知控制点在标段范围内布设施工控制网。范围内大部分为水田旱地，呈台阶状，大部分控制点只能布设于旱地田埂边。测区范围内只有有一条土质机耕道贯穿，机耕道路面窄，路面质量差，交通不方便；另外由于地形复杂为测量选点增加了难度，测量通视条件较差，因此不宜采用导线测量和三角测量，宜采用GPS静态测量进行首级控制测量。整个标段呈带状分布，里程较短，面积较小，可以视作平面，对控制点进行了三维无约束平差、二维约束平差和高程拟合。1.2、技术规范全球定位系统（GPS）测量规范 (GB/T 18314-2009)公路全球定位系统( GPS) 测量规范（JTJ_T_066-1998）1.3、技术依据 根据业主提供的G09、G10、T55-1、T55-3进行GPS控制测量，其中G09、G10、T55-3在解算时将平面坐标和高程一并带入解算，T55-1则只将平面坐标带入解算。平面坐标系为业主提供的工程坐标系（北京54坐标系、中央子午线为105、投影面高程0米），高程基准为1985年国家高程基准。 根据要求，本次GPS静态控制测量的首级控制为四级GPS控制测量，然后根据首级控制点利用RTK技术采集施工控制点的坐标和高程，采集施工控制点时不少于30秒。2、 测量实施2.1、测量准备 1、人员配备测量技术员4人，路桥隧技术员4人，中海达HGO平差软件。2、仪器设备 中海达导航技术公司的华星A8共2套5台，2台工作用车，控制点桩位开挖及埋设工具。2.2 控制点选点 A合同段第四分部范围内水田、旱地较多，且地势陡峭，选点难度较大，均按照下列要求进行选点：1、 每2公里至少要有2个GPS点通视；2、 控制点点位有利于采用其它测量方法扩展和联测；3、 点位应选在基础稳定，并易于长期保存的地点。4、 点位要便于安置GPS接收设备和全站仪操作，视野开阔，视场内没有高度角大于15的成片障碍物，否则应绘制点位环视图；5、 点位附近没有强烈干扰卫星信号接收的物体。点位距大功率无线电发射源（如电视台、微波站等）的距离应不小于400m；距220Kv以上电力线路的距离应不小于50m；6、 点位应利于公路勘测放线与施工放样，且距路线中心线不宜小于50m,并不大于300m。对于大型桥梁、互通式立交、隧道等还要考虑加密布设控制网的要求。根据现场地形及沿线工程分布特征，共布设首级控制点16个，施工控制点8个。2.3、控制点埋设 按照业主的要求共布设了首级控制点16个，施工控制点8个，均用开挖工具现场开挖成型，然后现场用混凝土浇筑而成。混凝土桩上部为3030cm，下部为4040cm，长50cm，其中心点位置用刻有十字标记的16钢筋进行标识，钢筋长45cm，具体形状见下图。2.4、数据采集 4个已知控制点，16个首级控制点，共20点，投入4台GPS，每次测量4个点，一个时段完成后移动2台GPS到下面待测量控制点上，依次类推。每次测量时间至少60分钟。采集的数据则自动记录在GPS接收机的内存模块里；在测量时测量技术员需记录每站的起止时间以及量取天线斜高，同时现场填写点之记及GPS测量手薄。2.5、数据传输 在测量的当天晚上，用专用数据线将GPS接收机和计算机连接，将存储在GPS内存模块里静态测量数据文件拷贝至计算机，并根据仪器编号命名并存储。2.6、预处理 将数据传输到计算机时确定数据文件格式为中海达导航专用数据格式ZHD，然后将所有数据文件导入中海达HGO平差软件中并输入每站的站名及天线斜高。2.7、基线解算在基线解算时要先剔除观测时信号间断引起的数据，星座变化引起整周未知数增加的数据。待基线向量检查合格后再进行基线向量网平差。2.8、GPS网平差 平差后求得各GPS点之间的相对坐标差、高程差，加上基准点的坐标高程，求得各GPS点的坐标以及高程。具体计算参数及误差分析详见附件3平差报告。3、提交资料：技术总结1份 附件1 控制点成果表点号XYH点之记G093106056.343 563184.921 1101.921 混凝土桩G103105492.187 563495.186 1098.598 混凝土桩GF13105669.783 563602.732 1060.232 混凝土桩GF23105737.354 563763.919 1035.167 混凝土桩GF33105521.322 564198.476 1029.010 混凝土桩GF43105628.942 564441.695 1018.012 混凝土桩GF53105538.329 564729.216 1025.509 混凝土桩GF63105581.376 565152.784 1008.891 混凝土桩GF73105593.659 565658.958 964.337 混凝土桩GF83105443.671 565921.716 970.102 混凝土桩GF93105443.410 566273.277 947.646 混凝土桩GF103105470.285 566924.535 940.589 混凝土桩GF113105293.117 567173.135 970.880 混凝土桩GF123105696.987 567448.567 852.783 混凝土桩GF133105550.943 567870.821 929.626 混凝土桩GF143105428.098 568554.215 1046.183 混凝土桩GF153105203.750 568892.119 951.256 混凝土桩GF163105463.275 569716.208 813.657 混凝土桩T55-13106152.998 569666.502 717.090 刻石T55-33105683.494 570133.622 725.356 混凝土桩附件2 控制点示意图附件3 平差报告叙古高速A合同段第四分部 GPS控制网平差报告1 坐标系统 1.1 坐标系统名称 北京541.2 基准参数 椭球长半轴a6378245.0000椭球扁率f1/298.300000001.3 投影参数 M0=1.00000000投影比率H=0.0000投影高Bm=0投影面的平均纬度B0=0:00:00.00N原点纬度L0=105:00:00.00E中央子午线N0=0.0000北向加常数E0=500000.0000东向加常数2 三维无约束平差 2.1 平差参数 基准WGS-84迭代次数2参考因子9.52自由度992.2 自由网平差坐标 站点纬度/中误差经度/中误差高程/中误差中误差(度:分:秒)(m)(度:分:秒)(m)(m)(m)G0928:04:00.29978N0.0016105:38:35.04713E0.00191069.28370.00320.0040G1028:03:41.92441N0.0015105:38:46.29764E0.00161065.98820.00260.0033GF128:03:47.67358N0.0014105:38:50.26990E0.00131027.61420.00210.0028GF1028:03:40.60648N0.0011105:40:51.85124E0.0011907.99420.00220.0027GF1128:03:34.80722N0.0011105:41:00.91677E0.0010938.29500.00200.0025GF1228:03:47.87386N0.0011105:41:11.08410E0.0010820.18020.00200.0025GF1328:03:43.05320N0.0021105:41:26.51389E0.0016897.03120.00310.0041GF1428:03:38.93706N0.0015105:41:51.50898E0.00121013.59640.00240.0030GF1528:03:31.58775N0.0017105:42:03.83326E0.0016918.68190.00280.0036GF1628:03:39.86174N0.0017105:42:34.05963E0.0016781.07380.00290.0037GF228:03:49.84032N0.0013105:38:56.18470E0.00131002.54690.00210.0028GF328:03:42.74861N0.0012105:39:12.05300E0.0012996.40200.00200.0026GF428:03:46.20153N0.0012105:39:20.97913E0.0011985.39950.00190.0025GF528:03:43.20821N0.0011105:39:31.48832E0.0010992.90190.00180.0023GF628:03:44.53173N0.0011105:39:47.00493E0.0011976.28340.00180.0023GF728:03:44.84089N0.0011105:40:05.53996E0.0011931.73140.00180.0024GF828:03:39.92269N0.0010105:40:15.13007E0.0009937.50450.00160.0021GF928:03:39.85124N0.0010105:40:28.00160E0.0009915.05010.00160.0021T55-128:04:02.27198N0.0018105:42:32.38668E0.0017684.47460.00330.0041T55-328:03:46.93475N0.0018105:42:49.38929E0.0017692.76460.00310.00393 二维约束平差 3.1 平差参数 迭代次数3参考因子26.6037x(north)平移-2.5559 my(east)平移-31.3128 m比例1.0001241356m旋转1.4666 s3.2 平面距离平差值 起点止点北向(x)/中误差东向(y)/中误差平距中误差相对误差(m)(m)(m)(m)GF2G10-245.16650.0022-268.73330.0024363.76390.00331: 110306GF3-216.03190.0027434.55630.0023485.29270.00361: 136164GF6GF3-60.05470.0029-954.30840.0023956.19620.00371: 255258GF712.28220.0034506.17350.0033506.32250.00471: 106853GF9GF7150.24820.0032-614.31910.0028632.42580.00421: 149510GF12253.57680.00341175.29000.00261202.33430.00431: 279593GF14GF12268.88880.0041-1105.64800.00281137.87460.00491: 230852GF1635.17710.00331161.99350.00331162.52580.00471: 248448T55-3GF16-220.21860.0021-417.41380.0020471.94340.00291: 163109GF2G09318.98950.0022-578.99830.0024661.05480.00331: 200163GF4-108.41110.0026677.77520.0022686.39070.00341: 201845GF6GF447.56610.0028-711.08960.0022712.67870.00361: 198569GF8-137.70580.0027768.93140.0026781.16480.00371: 209865GF9GF80.26010.0029-351.56120.0026351.56130.00391: 89602GF11-150.29340.0033899.85830.0025912.32290.00411: 220263GF14GF11-134.98140.0042-1381.07970.00281387.66030.00511: 274248GF15-224.34790.0033337.90450.0033405.60010.00461: 87239T55-3GF15-479.74360.0024-1241.50270.00221330.97070.00331: 405824GF2GF1-67.57070.0021-161.18760.0020174.77770.00291: 60284GF6GF5-43.04730.0021-423.56780.0019425.74960.00281: 149687GF9GF1026.87490.0031651.25780.0026651.81210.00401: 161464GF14GF13122.84470.0058-683.39330.0038694.34660.00691: 100034T55-3T55-1469.50400.0004-467.12000.0004662.29530.00051: 1257322G10G09564.15600.0003-310.26500.0003643.84500.00041: 1716420GF3GF4107.62080.0020243.21880.0018265.96550.00271: 97673GF7GF8-149.98800.0029262.75790.0028302.55270.00401: 75334GF12GF11-403.87020.0031-275.43170.0021488.84950.00381: 129715GF16GF15-259.52500.0026-824.08890.0026863.98830.00371: 235832G10GF1177.59570.0023107.54570.0025207.62060.00341: 61593GF3GF1148.46110.0027-595.74400.0024613.96380.00361: 169905GF517.00740.0028530.74070.0022531.01310.00361: 147172GF7GF5-55.32950.0034-929.74130.0032931.38620.00471: 198503GF10-123.37320.00381265.57680.00361271.57610.00521: 243076GF12GF10-226.70190.0035-524.03230.0027570.96720.00441: 128691GF13-146.04420.0061422.25470.0037446.79740.00711: 62557GF16GF1387.66760.0062-1845.38680.00461847.46800.00771: 239500T55-1689.72260.0021-49.70620.0020691.51140.00291: 238114G09GF1-386.56030.0023417.81070.0025569.20530.00341: 168580GF4GF140.84030.0026-838.96280.0023839.95630.00351: 238638GF5-90.61340.0028287.52180.0022301.46240.00351: 85433GF8GF594.65850.0028-1192.49920.00261196.25020.00381: 316906GF1026.61480.00351002.81890.00331003.17210.00481: 209869GF11GF10177.16830.0035-248.60050.0027305.27170.00441: 69560GF13257.82600.0062697.68640.0037743.80150.00721: 102808GF15T55-1949.24760.0024774.38270.00221225.04680.00331: 3729813.3 平面坐标 站点北向(x)/中误差(m)东向(y)/中误差(m)中误差(m)误差椭圆E(m)F(m)ET(度:分:秒)G093106056.3430*563184.9210*G103105492.1870*563495.1860*GF13105669.78270.0023563602.73170.00250.00340.00250.002369:56:32GF103105470.28530.0046566924.53450.00400.00610.00470.0039161:29:59GF113105293.11700.0045567173.13500.00370.00580.00460.0036169:45:18GF123105696.98720.0044567448.56670.00370.00570.00450.0036163:03:31GF133105550.94300.0062567870.82140.00450.00770.00630.0044166:40:25GF143105428.09830.0034568554.21470.00320.00470.00350.0031145:52:23GF153105203.75040.0024568892.11930.00220.00330.00250.0021149:04:12GF163105463.27540.0021569716.20820.00200.00290.00220.0019139:20:09GF23105737.35350.0022563763.91930.00240.00330.00250.002271:24:37GF33105521.32160.0031564198.47570.00300.00430.00310.002926:18:05GF43105628.94240.0030564441.69450.00290.00410.00300.002823:16:52GF53105538.32900.0037564729.21630.00320.00490.00370.0032159:48:05GF63105581.37630.0037565152.78410.00330.00490.00380.0032158:51:10GF73105593.65850.0044565658.95760.00390.00590.00450.0039162:37:30GF83105443.67050.0040565921.71550.00350.00540.00410.0035165:45:56GF93105443.41040.0043566273.27670.00360.00560.00430.0036166:20:57T55-13106152.9980*569666.5020*T55-33105683.4940*570133.6220*4 高程拟合 4.1 平差参数 迭代次数2参考点G09拟合方程H = H0 + A + B * x + C * yA32.6373B(北斜坡)46.647 ppmC(东斜坡)-3.851 ppm4.2 高程拟合坐标 站点高程(m)高程中误差(m)G091101.9210G101098.5980GF11060.23190.0021GF10940.58900.0022GF11970.88040.0020GF12852.78330.0020GF13929.62570.0031GF141046.18250.0024GF15951.25620.0028GF16813.65680.0029GF21035.16700.0021GF31029.01030.0020GF41018.01170.0019GF51025.50880.0018GF61008.89060.0018GF7964.33710.0018GF8970.10210.0016GF9947.64620.0016T55-1717.08980.0033T55-3725.3560附件4 控制点点之记附件5 GPS观测手薄