作　　者： ; ; ; ;

机构地区： 中交第四航务工程局有限公司

出　　处： 《现代隧道技术》 2012年第5期132-136,共5页

摘　　要： 声纳法是一种管节相对定位的测量方法,其测量不需要测量塔,测量精度不受隧道长度影响,能够快速高效地实现管节对接端的精确定位。文章从管节形态测量、仪器位置标定测量和现场定位测量等几个方面对声纳法管节沉放实时定位测量技术进行了分析研究,并根据超声波的传播原理和声纳法在国外沉管隧道工程的应用实例,分析了各种因素对声纳法定位测量精度的影响,给出了声纳法管节沉放实时定位测量的精度。 The sonar method is a relative positioning measurement method for immersed elements. This method requires no survey towers and the measurement accuracy is not relative to the length of the tunnel, so the accurate position of the immersed element end can be measured efficiently. In this paper, the sonar method based real-time positioning measurement techniques are presented in terms of the element shape measurement, calibration measurement of sonar equipment position, and field positioning measurement. Based on the propagation principle of ultrasonic waves and a case study of sonar methods applied in foreign immersed tunnels, the influence on sonar accuracy by various factors is discussed. Finally, the accuracy of the sonar method based real-time positioning measurements is given.

关 键 词： 管节沉放 定位测量 声纳法 形态测量 标定测量

领　　域： [建筑科学] [交通运输工程] [建筑科学] [交通运输工程]