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水下沉管施工

FABURIQI:2020-12-24    RENQI:1123    LANMU:CHENGUANANZHUANG

水下沉管施工

水下沉管施工

WOGONGSIYONGYOUYIPIGAOSUZHIDEZHUANYEQIANSHUIYUAN,JINNIANLAIDUOCIWANCHENGGEXIANGZHONGTEDARENWU。RU:WENZHOUYONGZHONGSHUIXIACHENGUANDEPUSHE;NINGBOBEILUNDIANCHANGCHENJINGXIACHENFENGDIJIANZHUANG;ZHEJIANGKUAHAIDAQIAOSHUIXIAGANGGUANZHUANGQIEGE;SHANGHAIFENGXIANWUSHUICHANGBENGFANGJIANSHE;HUZHOUQUWUSHUIGUANWANGJIANSHE;NINGBOXIANGSHANDIANCHANGKOUDULOUDENG。WOGONGSIZAISHIGONGZHONGZHUZHONG、JIANGJIUXINYU、ZUNSHOUHETONG、QUEBAOANQUAN。ZHEIXIEGONGCHENGWEIWOGONGSIYINGDELEDADANWEIDEGAODUZANYANGHEXINFU。 JICAOKAIWASHI,YAOYOUZHUANRENDUIYIWAJICAOJINXINGZIJIAN,JICAOZHOUXIAN、KUANDU、SHENDU、PINGZHENGDU、POBIYINGBENFUHESHEJIYAOQIU,BINGJILUBEICHA。JICAOKAIWAWANCHENGHOU,JISHITONGZHIYEZHUJIJIANLIGONGCHENGSHIJINXINGYANSHOU,TIGONGWANZHENGDEJICAOSHIGONGYANSHOUZILIAO,YANSHOUHEGEHOUFANGKEJINXINGXIAYIGONGXUSHIGONG。

PIAOFUPUSHEFAFENWEISHUIMIANPIAOFUTUOHANGHESHUIXIAPIAOFUTUOHANGFA。GUANDAOZAIANSHANGHUOHAITANZUZHUANGCHENGSHEJIYAOQIUDEGUANDUANZHANGDU,ZAIGUANDUANDESHIDANGWEIZHIFUTONG,GUANDUANLIANGDUANHANSHANGFENGTOU,RANHOUJIANGGUANDUANHUAFANGHUOTUOYINXIASHUI。SHUIMIANTUOHANGLIYONGFUTONGSHIGUANDUANPIAOFUZAISHUIMIAN。WOMENXIAOBIANJIULAIJININJIESHAOSHUIXIAANZHUANGQIANSHUIZUOYE,XIWANGTONGGUOWOMENDEJIESHAORANGNINDUIGUOHEGUANDAOSHUIXIAANZHUANGDANWEI/FANGAN/DENGWENTIYOUGENGSHENRUDELEJIE。ZAIQIANSHUIZUOYEZHONG,QIANSHUIRENYUANYIDINGYAOZHUYISHUXISHIYONGGEZHONGQIANSHUIBAGONGZUODESHENGSHIYONGGUIDINGYIJISHIXIANYUEHAODELIANLUO,YOUQISHIZAISHENSHUI、JILIU、GUANDAO、SHUIKUZHONGGONGZUODESHIHOUBIXUXISHENG,YIBEIZAIFASHENGGUZHANGDESHIHOU,KEYITONGGUOSHENGCHUANDI,ZHEIYANGCAINENGSHUIXIAGONGZUODEXING。XIAMIANJIUGENSUIWOMENSHUIXIAGONGCHENGYOUXIANGONGSIDEZHUANJIAYITONGLAIKANYIXIAXIANGGUANDENEIRONGJIANJIEBA。

其大部分管线安装均位于水下,因此均为水上、水下施工作业,需依靠大型船舶设备、潜水员和专业施工人员精心组织施工,才能保证工程和施工作业安全。江河海底等部位水下管道的铺设安装摘要:介绍了水下沟槽开挖的及其优缺点;管道水下铺设的几种的优点比较及注意事项。航道基槽开挖:采用定位桩挖泥船进行施工,施工中采取先挖两边,后挖中间;开挖方向由中间向两边,由两边向中间;施工船舶由纵向到横向的进行开挖。由于航道两边的土方较高,施工船舶无法靠边,在施工的开始时期,无论在南岸或北岸,挖泥船纵向顺靠在航道的内挡,贴近滩涂插桩定位,运泥驳船停靠在外挡,从航道中心向岸边进行土方开挖,并在距运泥驳船15m以外设立施工浮标。挖机从一侧开挖,180度后将泥装进运泥驳船的船舱内,这样可以减小航道占用量。

沟槽开挖与支护(一)分层开挖及深度(1)人工开挖沟槽的槽深超过3m时应分层开挖,每层的深度不超过2m.(2)人工开挖多层沟槽的层间留台宽度:放坡开槽时不应小于0.8m,直槽时不应小于0.5m,安装井点设备时不应小于1.5m.(3)采用机械挖槽时,沟槽分层的深度按机械性能确定。控制措施:

①基槽挖泥施工前应做好标志设置工作,包括挖泥基槽的纵向标及断面标。立标时应注意标志位置的选取要合理并且方便施工。

②KAIWAZHONGYAOYANGEANZHAOSHEJIDUANMIANCHICUNYAOQIUSHIGONG,QINDUIBIAO、QINCESHUISHEN,TEBIESHIWACENGHUOWAZHIBIANXIANSHI,YAOKONGZHIKAIWAFANWEI,JIANGCHAOKUAN、CHAOSHENKONGZHIZHI。BENGONGCHENGJICAOSHENDUGUOSHEN,YINGCAIYONGGPSDINGWEI,CHAOSHENGBOSHENDUJIANCEYIJINXINGJICAOMIDIANJIANCE,DUJUEJICAOQIANDIANCHUXIAN。

③JICAOKAIWAHOUJISHIJINXINGGOUCAOJIDISHADIANCENGPAOTIANDENGHOUXUGONGXUSHIGONG,YIFANGJICAOHUIYU。




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