摘要
基于线性调频技术的Chirp声学浅剖仪系统,较好地解决了探测深度以及分辨率这两个最令人关心但又互为矛盾的问题。该浅剖仪系统主要由导航系统、信号控制系统、信号发射系统、信号接受系统以及测深系统等5部分组成,理论上,其纵向地层分辨率为十几厘米左右,最大探测深度在百米左右,具体视地层以及水质等条件而定。考虑到该系统的特殊性和复杂性,对其关键操作进行了较为详细的描述。最后介绍了该系统在活断层调查、管线走向调查以及水底抛石调查等不同类型水域岩土工程勘察中的成功应用,表明其具有良好的应用前景。
The Chirp acoustic subbottom profile system based on the linear frequency modulation technology can solve two most important problems of geologic investigation in water areas,namely,depth and re-solution.This system consists of five parts： navigation system,signal control system,transmission system,signal receiving system and depth sounding system. The vertical resolution of the system is about 15cm and the maximum investigation depth is about 100m,both depending on the characteristics of stratum and water.Considering the specificity and complexity of the system,the key operation was introduced in details.Furthermore,applications of the system in active fault exploration,pipeline direction exploration and riprap exploration were presented in this paper.The results show that this acoustic subbottom profile system is available in shallow strata and structure investigation.
出处
《防灾减灾工程学报》
CSCD
2010年第2期216-221,共6页
Journal of Disaster Prevention and Mitigation Engineering
基金
国家"十五"重点项目中国数字地震观测网络项目之南京市活断层探测与地震危险性评价项目(1-4-10)资助
关键词
Chirp声学浅剖仪
水域地质调查
断层探测
线性调频技术
acoustic subbottom profile system
geologic investigation in water areas
fault exploration
linear frequency modulation technology
