天然气管道涉路工程(定向钻穿越)安全评价报告

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1、目录1概述...................................................................................................................11.1工程概况.................................................................................................11.2工程地质情况..........................................

2、...............................................21.2.1地质情况.............................................................................................21.2.2水文、气象情况.................................................................................31.3评价依据.........................

3、........................................................................41.4评价内容..................................................................................................51.5评价经过...........................................................................................

4、......52总体评价...........................................................................................................63评价意见与建议...............................................................................................63.1穿越方案核查............................................

5、..............................................63.1.1交叉角度与穿越方式..........................................................................63.1.2管道埋深、长度及尺寸......................................................................73.1.2.1管道埋深............................................

6、..............................................73.1.2.2管道长度........................................................................................103.1.2.3管道尺寸........................................................................................113.2结构验算.....................

7、...........................................................................123.2.1荷载计算............................................................................................123.2.2钢管强度验算....................................................................................17

8、3.2.3管壁厚度....................................................