生物保留第三部分:学习教益-定位问题和插件设计

尚未解决静坐问题,也许它会化为五大部件?静坐设计问题之一是液压级线 。从路由排水日中回调用于空间抓取坑和喉孔开口的方程?方程允许你估计排水量和顶宽度指定设计风暴 。这些方程仍然适用,我想对极低流可能更多考虑

图片中HGL太平面化,滤波床存储容量极小。因此流水流可冲穿设施并无法捕捉污染物。此外,斜坡小插件导致设施在存储容量使用前大量绕行。 在某些情况下,插件置入曲线路上超高端部分,径流完全达不到设施

While maybe not a concern for inlets design solely for the purpose of conveyance, the issue of careful grading is looking to be very important.  From personal observations, very small elevations differences between the edge of pavement and the edge of curb have a big impact on small flows, for which many of these BMPs are design to capture.  Frequently, the edge of asphalt is as little as 6 mm below the invert of the concrete inlet, or there is a small temperature gap between the asphalt and the edge of the curb.  Even these small differences will allow the low flow runoff to completely bypass the unit.  These are mostly construction and specification related issues but need to be addressed.

插件设计
插件设计是一个难解问题通常小口太小并允许绕行垃圾和垃圾或街叶堆积这些污染物成为并阻塞进入并绕行下游附属物垃圾和碎片有时塞进插口喉咙

归根结底,就是内插积沉积问题。当水穿插插口时,它的能量水平下降,重固态则下降垃圾和碎片积聚到此 液压效应建立沉淀物 直达径流从内部有效阻塞并绕行

某些有效设计技术允许更多插件存储容量,有时用内部流扩展器搭建沉积物前台以取定水并均衡分布于生物保留介质表面高载商路极有可能运输大粒子和重负载

The City of Portland has been gaining a lot of experience with different designs and figuring out what works and what does not.  Some innovative practices have been the result.  Since roads and parking lots are deemed car habitat, we need to consider issues such as traffic safety and parking.  The city found that in many cases an open curb design could be a bit of an issue.  In the photo below the lack of a wheel stop makes for some interesting parking.  The City developed a mountable wheel stop to address this problem.  Newer design are also more effective at capturing runoff, managing solids, etc.

下个月我计划切换媒体讨论,