超大口径PCCP管道的断丝监测研究

Study on Broken Wire Monitoring of Ultra-Large Diameter PCCP Pipeline

PCCP管道埋置于地下受到外界环境因素的影响,预应力钢丝可能会受到损伤或者腐蚀,当腐蚀到达一定程度后存在钢丝断裂的可能,断丝会导致管道强度显著降低,当断丝的数量达到一定程度时就存在爆管风险。断丝监测作为一种能及时发现工程安全隐患的有效途径,可以及时掌握工程运行状态,获取工程安全相关信息。目前,国内对于断丝监测的研究分析大部分仅限于理论和实验阶段,通过结合国内某超大口径PCCP工程具体运行情况,采集并对比分析不同管节的断丝监测数据,探讨造成管道断丝的影响因素,为管线维护与安全输水提供理论与技术参考。

PCCP pipeline is buried in the ground under the influence of external environmental factors,prestressed steel wire may be damaged or corroded,when the corrosion reaches a certain degree,there is the possibility of steel wire fracture,when the number of broken wire reaches a certain degree,there is the risk of pipe explosion.As an effective way to find out the hidden danger of project safety,broken wire monitoring can grasp the project operation status in time and obtain the relevant information of project safety.At present,the domestic for broken wires monitoring analysis mostly limited to theoretical and experimental stage,through a combination of ultra-large diameter PCCP domestic engineering concrete operation,broken wires of different pipe joint monitoring data,to explore the influence factors of pipeline caused by broken wires,maintenance and safety of the pipeline conveyance to provide theoretical and technical reference.