基于浮标信号增强和动态探测污水管定位方法的探讨  

Discussion on Positioning Method of Sewage Pipe Based on Buoy Signal Enhancement and Dynamic Detection

作　　者：李兵 张海荣[2] 梁苗 LI Bing;ZHANG Hairong;LIANG Miao(Xuzhou Surveying&Mapping Institute,Xuzhou 221000,China;China University of Mining and Technology,Xuzhou 221116,China)

机构地区：[1]徐州市勘察测绘研究院有限公司,江苏徐州221000 [2]中国矿业大学,江苏徐州221116

出　　处：《城市勘测》2022年第6期171-174,共4页Urban Geotechnical Investigation & Surveying

摘　　要：超大埋深的非金属污水管线探测是行业内的难题。当污水管穿越河道、地下道、临近提升泵站等情况时,部分污水管深度可达6 m~12 m。此类污水井井口小、井脖长、井室大、井内污水浑浊且充满垃圾、漂浮物等,使用诸如量杆、L尺、地质雷达、管道CCTV检测设备等常规仪器设备,均不能有效探测。针对此类污水管线,本文提出了一种基于浮标信号增强和动态探测的污水管定位、定深方法,利用污水处于流淌状态的特性,流水将金属浮标卷冲进下游管道,增大目标体与周围介质的物性差异,从而增强被地面接收机接收到的电磁信号。为了验证方法的有效性开展了现场试验,对放入浮标与无浮标情况下的反射波剖面图进行了对比,结果表明该方法可以有效确定排水管道的平面位置和管道内水面至地表深度(以下简称测深),通过逐步延长浮标后的反射波剖面图,可以确定排水管线的走向。通过浮标信号增强和动态探测,该方法有效提高了探测深度和精度,有可能为超大埋深的非金属污水管线探测提供技术支撑。The detection of super deep non-metallic sewage pipeline is a difficult problem in the industry. When the sewage pipe crosses the river, underpass and near the lifting pump station, the depth of some sewage pipes can reach 6-12 meters. This kind of sewage well has small wellhead, long neck, large well chamber, turbid sewage in the well and full of garbage and floating objects. It can not be effectively detected by using conventional instruments and equipment such as measuring rod, L-ruler, geological radar, pipeline CCTV detection equipment and so on. Based on the difference between the electromagnetic signal of the sewage pipeline and the downstream water buoy, a method is proposed in this paper to enhance the dynamic detection of the sewage pipeline, which is based on the difference between the sewage pipeline and the downstream water buoy. In order to verify the effectiveness of the method, the field test is carried out, and the reflected wave profile with and without buoys is compared. The results show that this method can effectively determine the plane position of the drainage pipeline and the depth from the water surface to the surface in the pipeline(hereinafter referred to as sounding). By gradually extending the reflected wave profile after buoys, the direction of the drainage pipeline can be determined. Through buoy signal enhancement and dynamic detection, this method effectively improves the detection depth and accuracy, and may provide technical support for the detection of ultra deep non-metallic sewage pipelines.

关 键 词：管线探测 非金属管线 地质雷达 信号增强 动态探测 反射波剖面 

分 类 号：TU992.01[建筑科学—市政工程] P631[天文地球—地质矿产勘探]