基于改进MFO优化空间谱的埋地管道泄漏定位

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振动与冲击 ›› 2024, Vol. 43 ›› Issue (17) : 278-288.

论文

基于改进MFO优化空间谱的埋地管道泄漏定位

谢晓贤1，薛生1,2，郑晓亮3，王强3

作者信息 +

Leakage localization of buried pipeline based on improved MFO optimized spatial spectrum

XIE Xiaoxian1, XUE Sheng1,2, ZHENG Xiaoliang3, WANG Qiang3

Author information +

文章历史 +

摘要

现有管道泄漏声波定位法仅能提供泄漏所在区域。为实现区域内地下泄漏源的精确定位，基于地面均匀圆形阵列（Uniform Circular Array, UCA），提出选择性反向学习飞蛾火焰优化（Selective Opposition based Moth-Flame Optimization, SOMFO）结合双波谱的埋地管道泄漏定位方法。针对土壤P1波和S波共存且波速不明确等问题，构造地面UCA的双波谱函数，以其最大输出为优化目标，使用SOMFO寻优双波速度及泄漏源三维坐标共5个参数，并设计了多孔泄漏定位策略。搭建了埋地管道泄漏实验装置，通过互谱解卷绕相位的直线特性验证了P1波和S波的存在。实验结果表明，基于SOMFO优化双波谱的定位方法可准确估计波速及三维坐标，定位误差最大为0.066 m。此外，研究了多孔泄漏及寻优算法对定位精度的影响。与现有两种精确定位方法相比，新方法对单孔泄漏的定位精度分别提升9.68%和24.32%，多孔泄漏分别提升49.17%和61.15%。

Abstract

The existing acoustic-based pipe leak localization methods can only provide the region of leak. To accurately locate the underground leak in the leak region, based on the Uniform Circular Array (UCA) mounted on the ground, a localization method using Selective Opposition based Moth-Flame Optimization (SOMFO) and dual-wave spectrum was proposed. To address the issue of the presence of P1 and S waves in soils and the issue of indetermined velocities, the dual-wave spectrum function of the ground-mounted UCA was constructed and its maximum output was considered as the goal to optimize the five parameters, including the dual wave velocities and 3D coordinates of the leak, using SOMFO. The strategy for locating multiple leaks was also proposed. The experimental rig for buried pipe leak detection was built and the presence of P1 and S waves was proved using the straight-line behavior of the unwrapped phase of cross power spectrum. The results of localization tests indicate that the localization method based on SOMFO optimizing dual-wave spectrum can accurately estimate the velocities and 3D coordinates, with a maximum error of 0.066 m. Moreover, the influence of multi-leaks, and optimization algorithms on localization accuracy was analyzed. Compared with the two methods for precise localization, accuracy of the new method for locating single leak was improved by 9.68% and 24.32%, while that for multiple leaks was improved by 49.17% and 61.15%, respectively.

导出引用

谢晓贤1, 薛生1, 2, 郑晓亮3, 王强3. 基于改进MFO优化空间谱的埋地管道泄漏定位[J]. 振动与冲击, 2024, 43(17): 278-288

XIE Xiaoxian1, XUE Sheng1, 2, ZHENG Xiaoliang3, WANG Qiang3. Leakage localization of buried pipeline based on improved MFO optimized spatial spectrum[J]. Journal of Vibration and Shock, 2024, 43(17): 278-288

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