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height="110"/></a></dd><dd><a href='/uploadfile/image/201506/201458165357.jpg' rel="sexylightbox[group1]" title="油气工程水下作业施工"><img src='/uploadfile/image/201506/201458165357.jpg' width="146" height="110"/></a></dd><dd><a href='/uploadfile/image/case/2015071018080720720_ZYSG.jpg' rel="sexylightbox[group1]" title="油气工程水下作业施工"><img src='/uploadfile/image/case/2015071018080720720_ZYSG.jpg' width="146" height="110"/></a></dd><dd><a href='/uploadfile/image/201506/201458165556.jpg' rel="sexylightbox[group1]" title="油气工程水下作业施工"><img src='/uploadfile/image/201506/201458165556.jpg' width="146" height="110"/></a></dd> </dl> </div> <div class="content-width" style="background:#FFFFFF"><h1 style="text-align:center;"> <span style="font-family:'Microsoft YaHei';font-size:16px;">船舶</span><span style="font-family:'Microsoft YaHei';font-size:16px;"></span><span style="font-family:'Microsoft YaHei';font-size:16px;">水下打捞和</span><span style="font-family:'Microsoft YaHei';font-size:16px;"></span><span style="font-family:'Microsoft YaHei';font-size:16px;">水下切割</span><span style="font-family:'Microsoft YaHei';font-size:16px;">的方法</span> </h1> <p> <span style="font-family:'Microsoft YaHei';font-size:16px;"> 船舶水下打捞方法 ：沉船可用多种方法打捞，各种方法也可单独采用，也可几种方法联合采用，视具体需要而定。方法有：</span> </p> <p> <span style="font-family:'Microsoft YaHei';font-size:16px;">①封舱抽水打捞法。把沉船破口封堵后，将船内的水抽出，使船浮起，因封补严密困难，风浪大时难作业，故较少采用。</span> </p> <p> <span style="font-family:'Microsoft YaHei';font-size:16px;">②浮筒打捞法。用若干浮筒在水下充气后，借浮力将沉船浮出水面，此法浮力大而可靠，施工方便、安全。</span> </p> <p> <span style="font-family:'Microsoft YaHei';font-size:16px;">③船舶抬撬打捞法。用钢缆兜于沉船船底，用打捞船上的起重设备将沉船提起，打捞时一般要用两艘或多艘打捞船共同作业。这种方法在工程中用得较多.</span> </p> <p> <span style="font-family:'Microsoft YaHei';font-size:16px;">④泡沫塑料打捞法。将比重轻的闭孔泡沫塑料输入沉船舱内，排去海水，借泡沫浮力抬起船舶，此法免去在沉船底穿引钢缆的不便，且减少或免去封舱工作，也适应海上风浪下作业。</span> </p> <p> <span style="font-family:'Microsoft YaHei';font-size:16px;">⑤围堰打捞法。当船沉于水深较小的水域时，可筑堰于沉船的周围，抽出堰内的水，将沉船封补或修复，再灌水将船浮起后拆除围堰。</span> </p> <p> <span style="font-family:'Microsoft YaHei';font-size:16px;">⑥充气排水打捞法。是向沉船舱内打入压缩空气而排出水体，使沉船浮起。</span> </p> <p> <span style="line-height:1.5;font-family:'Microsoft YaHei';font-size:16px;">一、水下打捞施工步骤：</span> </p> <p> <span style="line-height:1.5;font-family:'Microsoft YaHei';font-size:16px;"> 1、水下切割前准备工作 </span> </p> <p> <span style="line-height:1.5;font-family:'Microsoft YaHei';font-size:16px;"> (1)、在作业平台船上搭设一个吊力达2.5T的扒杆，稳住被切割的位置，防止被切割部位的突然脱落，以免造成对潜水员的伤害。 </span> </p> <p> <span style="line-height:1.5;font-family:'Microsoft YaHei';font-size:16px;"> (2)、根据研究确定切割的位置，先进行水下切割位置的除锈、清淤工作，提高水下切割的效率。</span> </p> <p> <span style="line-height:1.5;font-family:'Microsoft YaHei';font-size:16px;">(3)、水下清淤利用潜水员到切割部位采用高压水枪，水枪的工作压力为 10—15kg，利用高压水枪射出的高压水枪冲刷淤泥，形成一定的稠密泥浆沉淀底部，然后利用吸泥器将泥浆排除距沉船位置10米外。以免泥浆继续沉淀在沉船上。</span> </p> <p> <span style="line-height:1.5;font-family:'Microsoft YaHei';font-size:16px;"> 二 水下沉船打捞具体实施：</span> </p> <p> <span style="line-height:1.5;"><span style="font-family:'Microsoft YaHei';font-size:16px;"> (1)、</span><span style="font-family:'Microsoft YaHei';font-size:16px;">采用直流弧焊机,焊机容量应该≥400A,保证地线连接可靠,切割回路形成应合理；</span></span> </p> <p> <span style="line-height:1.5;font-family:'Microsoft YaHei';font-size:16px;"> (2)、水下切割的操作。由于受水下工作环境影响属于悬空位置，如果直接切割会给在悬空状态下的潜水员造成很大的危险行，切割效率也低，</span> </p> <p> <span style="line-height:1.5;"><span style="font-family:'Microsoft YaHei';font-size:16px;"> (3)、</span><span style="font-family:'Microsoft YaHei';font-size:16px;">因此首先应使潜水员稳定住身体，制作一个吊篮，让潜水员在吊篮中进行操作。潜水员下潜至切割作业点后，处于同割线平行的位置。切割开始前，应先整理好供气管，信号绳，氧气管及切割电缆设备，应注意不要使它们处于熔渣流动的线路上，以免被烧坏。</span></span> </p> <p> <span style="line-height:1.5;"><span style="font-family:'Microsoft YaHei';font-size:16px;"> (4)、</span><span style="font-family:'Microsoft YaHei';font-size:16px;"></span><span style="font-family:'Microsoft YaHei';font-size:16px;">水下切割时，为了防止割断的沉船板块砸伤潜水员，应在切割前，在被要割断的沉船板块上，用平台的扒杆吊住。</span></span> </p> <p> <span style="line-height:1.5;"><span style="font-family:'Microsoft YaHei';font-size:16px;"> (5)、</span><span style="font-family:'Microsoft YaHei';font-size:16px;"></span><span style="font-family:'Microsoft YaHei';font-size:16px;">然后进行切割，在切割的同时不要将沉船板块完全割断。应在边缘处留下一点未割金属，以确保起吊前不会自由移动。</span></span> </p> <p> <span style="line-height:1.5;"><span style="font-family:'Microsoft YaHei';font-size:16px;"> (6)、</span><span style="font-family:'Microsoft YaHei';font-size:16px;"></span><span style="font-family:'Microsoft YaHei';font-size:16px;">待潜水员整好切割装备，并撤离水面，或躲到其他安全的地方以后，再启动吊力，将留下的一小部分金属拉断，吊出水面。</span></span> </p></div> <div id="text" class="text"> <div class="fanye2"> <a class="fl" href="/Case/Showcase.asp?id=13" title="水厂河床水下地形测量">上一组</a><a class="fr" href="/Case/Showcase.asp?id=15" title="水厂涉水工程施工">下一组</a></div> </div> </div> </div> <div class="w_280 fr"> <div class="box"> <div class="title tubiao_C">案例分类 <span>Case Nav</span></div> <ul class="list_2"> <li><a href="/Case/?id=1" title="水电水下作业">水电水下作业</a></li><li><a href="/Case/?id=2" 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