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首页> 外文期刊>Journal of Infrastructure Systems >Green Infrastructure for Highway Stormwater Management: Field Investigation for Future Design, Maintenance, and Management Needs
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Green Infrastructure for Highway Stormwater Management: Field Investigation for Future Design, Maintenance, and Management Needs

机译：公路雨水管理的绿色基础设施：对未来设计，维护和管理需求的现场调查

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Many types of structural stormwater best management practice (BMP) have been employed since the late 1990s in the hope of mitigating the impervious surface hydrology (indicated by, e.g., high runoff volume and peak flow rates, sewer and ditch runoff conveyance, and short time to peak flow) and deteriorating water quality due to land development and human activities. It is time to examine the status of the BMP deployment from an infrastructure perspective and reflect the best strategies for low-impact development (LID). This paper presents a 22-month field investigation for 279 structural BMPs and 227 major outfalls (defined as storm drain outfall pipes with an equivalent diameter of 91 cm or larger) along highways in Prince George's County, Maryland, an area that has LID BMP research and employment history for decades. This study offers a snapshot about the state and effectiveness of structural BMPs in mitigating highway runoff in this region. The results indicate that the majority of structural BMPs deployed along the regional highway system are infiltration trenches and stormwater ponds, both of which need extensive maintenance. Due to safety concerns for traveling vehicles, fast runoff conveyance and end-of-pipe treatment are sometimes required in highway systems, prompting challenges for the LID designs. Stormwater discharged from 51% of the major outfalls is not treated, indicating strong demands for stormwater green infrastructure expansion and retrofit. This paper identifies general problems and maintenance needs of different highway structural BMP designs as well as providing recommendations for improvement to engineers and highway administrators. (C) 2015 American Society of Civil Engineers.
机译：自1990年代后期以来，已采用了多种类型的结构性雨水最佳管理实践（BMP），以期减轻不透水的地表水文状况（例如，高径流量和高峰流量，下水道和沟渠径流输送以及短时间表示）峰值流量）和由于土地开发和人类活动而导致的水质恶化。现在该从基础结构的角度检查BMP部署的状态，并反映出低影响开发（LID）的最佳策略。本文介绍了在马里兰州乔治王子县的高速公路上对279个结构BMP和227个主要排水口（定义为当量直径91厘米或更大的暴雨排水口排水管）进行的为期22个月的现场调查，该地区已进行LID BMP研究和数十年的就业历史。这项研究概述了结构性BMP在缓解该地区高速公路径流方面的状态和有效性。结果表明，沿区域公路系统部署的大多数结构性BMP是渗透沟和雨水塘，这两个区域都需要大量维护。由于旅行车辆的安全问题，在高速公路系统中有时需要快速径流输送和管端处理，这给LID设计带来了挑战。未处理51％的主要排污口排放的雨水，表明对雨水绿色基础设施的扩展和改造有强烈的需求。本文确定了不同高速公路结构BMP设计的一般问题和维护需求，并为工程师和高速公路管理员提供了改进建议。 （C）2015年美国土木工程师学会。

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