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水下高程测量新方法初探
作者:李增军  
单位:中交第一航务工程局有限公司  
关键词:高程  水深测量  压强波动  谱分析  能量谱密度估计  水下构筑物 
分类号:U652.4
出版年,卷(期):页码:2009,33(3):10-12
摘要:
传统的水下构筑物高程测量方法是使用水准仪或GPS配合尺杆将绝对高程传递到水下待测点。当工程距岸较远、水深增大时,测深的误差显著增大、测量的工作时间大大延长、水上测量平台的搭建成本显著增加。为此开发了利用水压传感器测深的新方法,对于所面临的波浪影响问题进行了专题研究。从波浪理论出发,对水下固定点压强波动振幅同表面波高及固定点水深的函数关系进行了推导,得出了利用参考点和被测点压强波动振幅实测值计算被测点水深的方法,可作为实用阶段测量系统研究开发的基础和途径之一。
Traditional method to measure the elevation of underwater structures is to transmit the absolute elevation from the land-based control points to the underwater points to be measured by using leveling instrument or GPS together with leveling rod.When a project is far away from the coast with increased water depth,the sounding error increases significantly,working hours of surveying extend greatly,and the expenditure in construction of platforms for underwater surveys increases significantly.Therefore,a new method for sounding by using pressure sensor is developed and monographical study is made on the problem of wave impact.From the wave theory,the functional relationship between a fixed point on the underwater pressure fluctuant amplitude and surface wave height and water depth at a fixed point has been derived to obtain a method to calculate the water depth at a measured point by using the measured value of the reference point and measured point pressure fluctuations amplitude,which can be used as the foundation and approach for the research and development of measurement system at the practical phase.
基金项目:
交通部西部交通科技项目(200632800003-08)
作者简介:
参考文献:
[1]俞聿修.随机波浪及其工程应用[M].大连:大连理工大学出版社,1992. [2]李玉成,滕斌.波浪对海上建筑物的作用[M].北京:海洋出版社,2002. [3]徐长发,李国宽.实用小波分析[M].武汉:华中科技大学出版社,2004.
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