天然气水合物垂直缆地震系统设计与试验  

Design and Experiment of Vertical Cable Seismic System for Gas Hydrate

作　　者：陈晨 黄建宇[1,2] 伍忠良[1,2] 

机构地区：[1]国土资源部海底矿产资源重点实验室,广州510075 [2]广州海洋地质调查局,广州510075

出　　处：《电子技术（上海）》2018年第2期34-37,33,共5页Electronic Technology

基　　金：国家重点研发计划(英文为National Key R&D Program of China)资助;项目编号:2017YFC0307706

摘　　要：天然气水合物垂直缆是构成立体化地震观测系统的手段之一。利用垂直缆可以实现广角、宽频、三维地震采集,易识别多次波,适用于局部探测及非常规成像。文章从多节点水听器阵列电缆、阵列电缆结构、阵列电缆技术方案、水下密封插件和采集站总体设计这几个方面详细介绍了系统的组成,通过试验获得了天然气水合物立体探测地震数据,数据显示了集中式数字垂直缆仪器灵敏度较高,能够辨识不同容量震源的激发信号,符合仪器设计要求。Gas hydrate vertical cable is one of the means to form a three-dimensional seismic observation system. Wide angle, broadband and 3D seismic acquisition can be realized by using vertical cable, which is easy to identify multiple waves, and is suitable for local detection and non-conventional imaging. In this paper, the composition of multi node hydrophone array cable, array cable structure, array cable technical scheme, underwater sealing plug-in and the overall design of acquisition station are introduced in detail, three-dimensional seismic data of gas hydrate are obtained by experiment, and The data show that the centralized digital vertical cable instrument has high sensitivity and can identify the excitation signals of different capacity sources. It meets the requirements of the instrument design..

关 键 词：天然气水合物 垂直缆 立体探测 

分 类 号：P315.7[天文地球—地震学]