多孔泄漏间距对埋地燃气管道声源特性的影响  

Influence of porous leakage spacing on sound source characteristics of buried gas pipelines

作　　者：李尧斌[1,2] 张文玺 LI Yaobin;ZHANG Wenxi(School of Safety Science and Engineering,Anhui University of Science and Technology,Huainan 232001,China;State Key Laboratory of Deep Coal Mine Mining Response and Disaster Prevention and Control,Anhui University of Science and Technology,Huainan 232001,China)

机构地区：[1]安徽理工大学安全科学与工程学院,安徽淮南232001 [2]安徽理工大学深部煤矿采动响应与灾害防控国家重点实验室,安徽淮南232001

出　　处：《陕西理工大学学报(自然科学版)》2025年第2期30-36,共7页Journal of Shaanxi University of Technology:Natural Science Edition

基　　金：国家重点研发计划项目(2023YFC3009000);煤炭安全精准开采国家地方联合工程研究中心开放基金(EC20211012)。

摘　　要：基于管道泄漏多源监测试验平台,探究埋地燃气管道多孔泄漏的声源特性。以不同双泄漏孔间距、不同管道泄漏压强的埋地燃气管道泄漏声源试验,分析埋地管道泄漏的时频域特性、平均信号电平(ASL)、有效值电压(RMS)参数的规律特征。试验结果表明:声源幅值随着泄漏孔间距的增加,呈现先增加后减小的趋势;突出频响点与泄漏压力无明显关系,但频响点的幅值会随着泄漏压力的增加而增加,在21 kHz左右非常明显。ASL值和RMS值受检测距离的影响较小,利用ASL值和RMS值检测双泄漏孔间距更为准确。研究结果能够为埋地燃气管道泄漏监测与检测提供理论依据。Based on the multi-source monitoring experimental platform for pipeline leakage,the acoustic source characteristics of porous leakage in buried gas pipelines are investigated.Through experiments on the leakage acoustic sources of buried gas pipelines with different spacings between double leakage holes and different leakage pressures in the pipelines,the time-frequency domain characteristics and the regular features of parameters such as the average signal level(ASL)and the root mean square(RMS)of buried pipeline leakage are analyzed.The experimental results indicate that the amplitude of the acoustic source shows a trend of increasing first and then decreasing with the increase of the spacing between the leakage holes.The prominent frequency response points have no obvious relationship with the leakage pressure,but the amplitude of the frequency response points increases with the increase of the leakage pressure,which is particularly evident at around 21 kHz.The ASL value and the RMS value are less affected by the detection distance,and it is more accurate to detect the spacing between double leakage holes using the ASL value and the RMS value.This research can provide a theoretical basis for the monitoring and detection of leakage in buried gas pipelines.

关 键 词：燃气管道泄漏 声源特性 多孔泄漏 泄漏孔间距 

分 类 号：TE973.6[石油与天然气工程—石油机械设备]