High-density polyethylene (HDPE) is commonly the material of choice for covered anaerobic lagoons (CAL) at wastewater treatment plants. The membrane floats on the wastewater, and hence is called a “floating cover”, and is used for odour control and to harvest the methane-rich biogas as a renewable resource to generate electricity. The floating cover is an expensive and high-value asset that demands an efficient methodology for the determination of a set of engineering quantities for structural integrity assessment. Given the dynamics of the anaerobic activities under the floating cover, the state of deformation of the floating cover is an engineering measurand that is useful for its structural health assessment. A non-contact measurement strategy is preferred as it offers practical and safety-related benefits over other methods. In collaboration with Melbourne Water Corporation (MWC), an unmanned aerial vehicle (UAV) assisted photogrammetry approach was developed to address this need. Following the definition of the appropriate flight parameters required to quantify the state of deformation of the cover, a series of periodic flights were operated over the very large floating covers at MWC’s Western Treatment Plant (WTP) at Werribee, Victoria, Australia. This paper aims to demonstrate the effectiveness and practicality of this inspection technique to determine the state of deformation of the floating covers measured over a ten-month period.

中文翻译：

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使用无人机摄影术对漂浮物进行远程监控

高密度聚乙烯（HDPE）通常是废水处理厂带盖厌氧泻湖（CAL）的首选材料。该膜漂浮在废水上，因此被称为“漂浮盖”，用于气味控制和收集富含甲烷的沼气作为可再生资源来发电。浮动覆盖物是一种昂贵且高价值的资产，需要一种有效的方法来确定用于工程完整性评估的一组工程量。考虑到漂浮盖下厌氧活动的动力学，漂浮盖的变形状态是工程测量值，可用于其结构健康评估。首选非接触式测量策略，因为它比其他方法具有实用和安全方面的好处。与墨尔本水务公司（MWC）合作，开发了无人机（UAV）辅助摄影测量方法来满足这一需求。在定义了量化覆盖物变形状态所需的适当飞行参数之后，在澳大利亚维多利亚州Werribee的MWC的Western Treatment Plant（WTP）的超大型浮动覆盖物上进行了一系列定期飞行。本文旨在证明该检查技术确定在十个月内测量的浮动覆盖物变形状态的有效性和实用性。在定义了量化覆盖物变形状态所需的适当飞行参数之后，在澳大利亚维多利亚州Werribee的MWC的Western Treatment Plant（WTP）的超大型浮动覆盖物上进行了一系列定期飞行。本文旨在证明该检查技术确定在十个月内测量的浮动覆盖物变形状态的有效性和实用性。在定义了量化覆盖物变形状态所需的适当飞行参数之后，在澳大利亚维多利亚州Werribee的MWC的Western Treatment Plant（WTP）的超大型浮动覆盖物上进行了一系列定期飞行。本文旨在证明该检查技术确定在十个月内测量的浮动覆盖物变形状态的有效性和实用性。