海底缆线的磁力探测方法与实践  

The Method and Practices of the Submarine Pipelines Detection Using Magnetometers

作　　者：裴彦良[1,2] 梁瑞才[1,2] 郑彦鹏[1,2] 韩国忠[1,2] 李正光[1,2] 

机构地区：[1]国家海洋局第一海洋研究所,青岛266061 [2]海洋沉积与环境地质国家海洋局重点实验室,青岛266061

出　　处：《地球物理学进展》2012年第5期2226-2232,共7页Progress in Geophysics

基　　金：863计划项目(编号:2009AA093401和2007AA09Z319)

摘　　要：在路由调查过程中,为保证海底光缆工程新建过程中已敷设的缆线安全,必须准确测得新建光缆的路由以及与它们交叉点的位置,进而采取一些必要的保护措施.本文回顾了海底缆线磁法探测的历史,介绍了探测原理和测线布设方法,通常海底缆线磁力探测测线,一般垂直于已敷设缆线布设,并以路由交汇点为中心布设3～5条测线,测线长度1km,测线间距200m.文中给出了探测中需要使用的磁力仪、定位仪、测深仪等仪器设备的技术要求和推荐配置.另外,通过采取适当降低船速和在磁力传感器附件适当配重等手段,提高测量精度.在此基础上,结合亚美光缆中国段路由磁力调查的工程实例,对应用磁力仪探测海缆的探测过程、磁测资料处理和解释方法进行了分析和总结,绘制了AAG路由与某海底光缆交汇点的磁力探测成果图件.最后,给出了几次典型工程实践的探测成功率统计.多次工程实践表明,磁力探测方法对于海底缆线的探测具有很好的效果.磁力探测是海底缆线探测不可或缺的方法手段之一.Along with the economic development, the submarine pipeline engineering has been expanded rapidly in recent years. During the route survey, in order to ensure the safety of the submarine pipelines which have been paved before, we must detect the well and truly positions of the intersections between the new and old submarine pipeline routes, then the safeguards can be carried out. The retrospect of the submarine pipelines detection using magnetometers is introduced briefly in this paper firstly, and the operational principle and method such as information prepared and survey lines arrangement are explained, namely in general, the magnetic detecting lines of the submarine pipeline should plumb the route direction existent already, 3~ 5 detecting lines are perfect, which distributing to both sides of the intersections, and the central line had better thrill through the intersection, lkm length is designed for every line, and the space between lines is 200m in general. The characters of survey apparatus, including magnetometer, position system, echosounder, are elaborated and available types are list. In order to improve the survey precision, we can reduce the vessel speed and increase the weight In combination with the detection practice in the AAG Asia America Gateway project, this paper discusses the survey procedure, data process and analysis, giving a suit of magnetic survey achievement charts. The engineering practice show that the magnetic detection is effective method for tile submarine pipeline engineering. We suggest that the magnetic detection be one of the effective ways for the submarine pipeline engineering.

关 键 词：海底缆线 磁力 探测 方法 实践 

分 类 号：P318[天文地球—固体地球物理学] P738[天文地球—地球物理学]