云溪路（華南路~大觀路）土建工程一標(biāo)段

水準(zhǔn)、導(dǎo)線復(fù)測(cè)報(bào)告

一、工程概況
　　1.地理位置
　　云溪路一標(biāo)段位于廣州天河區(qū)東北部，華南植物園南面，道路西起華南快速路西側(cè)中科院廣州化學(xué)研究所與廣州有色金屬研究院之間，與現(xiàn)有道路接順，東至華南植物園南門口（現(xiàn)有云溪路）。主線全長(zhǎng)1.2公里，互通立交匝道包括A、B、C、D、E、F、G、H、I、J、L、M匝道的全部工程量，匝道總長(zhǎng)約4.4公里。內(nèi)含三座主線橋、七座匝道橋、一座人行天橋、一條車行道涵、一條人行道涵。
　　2. 坐標(biāo)及高程系統(tǒng)
　　根據(jù)設(shè)計(jì)說(shuō)明，本標(biāo)段平面控制采用廣州城建坐標(biāo)系統(tǒng)，高程采用廣州市城建高程系統(tǒng)。
　　

二、設(shè)計(jì)提交數(shù)據(jù)及交樁情況
　　設(shè)計(jì)單位共提供I07、I08、I09、I10、I11、I13、I14、七個(gè)I級(jí)控制點(diǎn)和I07、I08、I09、I10、I11五個(gè)四等水準(zhǔn)點(diǎn)，其中I09、I10兩個(gè)點(diǎn)在全封閉的華南快速路邊，不能進(jìn)入，因此實(shí)際能夠使用的只有I07、I08、I11、I13、I14五個(gè)點(diǎn)。
　　10月 12 號(hào)由業(yè)主牽頭組織了四方人員（廣園市政建設(shè)有限公司、遼寧省城鄉(xiāng)建設(shè)規(guī)劃設(shè)計(jì)院、廣州建筑工程監(jiān)理有限公司和廣州第一市政工程有限公司）進(jìn)行現(xiàn)場(chǎng)交樁，由于控制點(diǎn)均布設(shè)于砼路面上，保存完好，因此現(xiàn)場(chǎng)即辦理好交接手續(xù)。

　　三、控制點(diǎn)復(fù)測(cè)
　　1. 導(dǎo)線點(diǎn)復(fù)測(cè)
　　交接樁后，我單位（廣州第一市政工程有限公司）立即組織人員：XXX、XXX、XXX等人，于11月12~14日三天時(shí)間，對(duì)已交接樁五個(gè)導(dǎo)線點(diǎn)進(jìn)行邊、角復(fù)測(cè)。

在導(dǎo)線點(diǎn)復(fù)測(cè)時(shí)，我單位使用經(jīng)檢定合格的SOKKIA全站儀，型號(hào)SET2110,導(dǎo)線點(diǎn)測(cè)量全部按一級(jí)導(dǎo)線測(cè)量精度要求進(jìn)行四測(cè)回邊角觀測(cè)，為滿足施測(cè)通視要求，在I08至I13之間增設(shè)了I08-1、I08-2兩個(gè)轉(zhuǎn)點(diǎn)，采用附合導(dǎo)線法進(jìn)行測(cè)量。
　　以I07～I08為起始邊、I08為起算點(diǎn)，附合至I14～I11，經(jīng)四測(cè)回邊角測(cè)量，導(dǎo)線全長(zhǎng)【S】＝899.809m，計(jì)算方位角閉合差為fβ=36.7”，平均角度改正值7.33”，縱坐標(biāo)差fx＝-0.011m；橫坐標(biāo)差fy＝0.035m，全長(zhǎng)閉合差fs＝0.037m，相對(duì)閉合差k＝1:24537＜允許閉合差1:15000，故采用簡(jiǎn)易平差法，可滿足精度要求。                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
　　2.  水準(zhǔn)點(diǎn)復(fù)測(cè)
　　設(shè)計(jì)單位共提供三個(gè)水準(zhǔn)點(diǎn)，其中I07、I08、I11在本標(biāo)段附近，本標(biāo)對(duì)07、I08、I11進(jìn)行了復(fù)測(cè)。
　　在水準(zhǔn)點(diǎn)復(fù)測(cè)時(shí)，我單位使用經(jīng)檢定的蘇光DSZ2自動(dòng)安平水準(zhǔn)儀，按照四等水準(zhǔn)測(cè)量要求標(biāo)準(zhǔn)進(jìn)行往返測(cè)量。通過(guò)自I07、I08至I11實(shí)際測(cè)量，路線總長(zhǎng)：往測(cè)1804m，返測(cè)1804m，實(shí)測(cè)誤差為10mm，小于四等水準(zhǔn)允許誤差±12√L =16.1mm，因此采用簡(jiǎn)易平差法進(jìn)行平差，精度滿足《施工測(cè)量規(guī)范》要求。
　

　附件：

1、          附合導(dǎo)線計(jì)算成果表

2、          附合水準(zhǔn)平差計(jì)算表

3、          全站儀檢定證書(shū)

4、          水準(zhǔn)儀檢定證書(shū)

                                    廣州市XXXXXX工程有限公司

                                     XXX項(xiàng)目經(jīng)理部

                                       2009年    月   日