目录TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc329328343"目录PAGEREF_Toc329328343\h1HYPERLINK\l"_Toc329328344"1.编制依据PAGEREF_Toc329328344\h3HYPERLINK\l"_Toc329328345"2.工程概况PAGEREF_Toc329328345\h3HYPERLINK\l"_Toc329328346"2.1工程概况PAGEREF_Toc329328346\h3HYPERLINK\l"_Toc329328347"2.2管道沿线自然条件PAGEREF_Toc329328347\h5HYPERLINK\l"_Toc329328348"2.2.1气象条件PAGEREF_Toc329328348\h5HYPERLINK\l"_Toc329328349"2.2.2区域地质构造条件PAGEREF_Toc329328349\h5HYPERLINK\l"_Toc329328350"2.2.3水文地质PAGEREF_Toc329328350\h5HYPERLINK\l"_Toc329328351"2.2.4地层和岩土特征PAGEREF_Toc329328351\h5HYPERLINK\l"_Toc329328352"2.2.5土壤对钢结构的腐蚀性评价PAGEREF_Toc329328352\h5HYPERLINK\l"_Toc329328353"3.施工组织及部署PAGEREF_Toc329328353\h5HYPERLINK\l"_Toc329328354"3.1施工组织机构图PAGEREF_Toc329328354\h5HYPERLINK\l"_Toc329328355"3.2施工任务划分PAGEREF_Toc329328355\h6HYPERLINK\l"_Toc329328356"4.工程施工方案PAGEREF_Toc329328356\h6HYPERLINK\l"_Toc329328357"4.1管道施工程序PAGEREF_Toc329328357\h6HYPERLINK\l"_Toc329328358"4.2主要工序施工方案PAGEREF_Toc329328358\h8HYPERLINK\l"_Toc329328359"4.2.1线路交桩PAGEREF_Toc329328359\h8HYPERLINK\l"_Toc329328360"4.2.2测量放线PAGEREF_Toc329328360\h8HYPERLINK\l"_Toc329328361"4.2.3作业带平整PAGEREF_Toc329328361\h10HYPERLINK\l"_Toc329328362"4.2.4防腐管运输PAGEREF_Toc329328362\h11HYPERLINK\l"_Toc329328363"4.2.5布管PAGEREF_Toc329328363\h14HYPERLINK\l"_Toc329328364"4.2.6管沟开挖PAGEREF_Toc329328364\h15HYPERLINK\l"_Toc329328365"4.2.7清口、坡口加工PAGEREF_Toc329328365\h17HYPERLINK\l"_Toc329328366"4.2.8管道组对PAGEREF_Toc329328366\h19HYPERLINK\l"_Toc329328367"4.2.9预热、焊接与检验PAGEREF_Toc329328367\h20HYPERLINK\l"_Toc329328368"4.2.10补口与补伤PAGEREF_Toc329328368\h24HYPERLINK\l"_Toc329328369"4.2.11下沟作业PAGEREF_Toc329328369\h26HYPERLINK\l"_Toc329328370"4.2.12管沟回填和地貌恢复PAGEREF_Toc329328370\h28HYPERLINK\l"_Toc329328371"4.2.13管道连头碰死口PAGEREF_Toc329328371\h29HYPERLINK\l"_Toc3293283