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北京城市副中心启动20余个海绵城市改造项目

2018-09-18 09:56:05    新华网

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记者从北京市通州区海绵城市建设领导小组办公室了解到,作为全国第二批海绵城市建设试点城市,通州区海绵城市改造不断加速,近期20余个改造项目已全面启动。预计年底前,改造项目75%的雨水径流将会就地消纳和利用。

2016年,通州区被确定为全国第二批海绵城市建设试点,试点总规划面积19.36平方公里,西南起北运河,东至规划的春宜路,北至运潮减河。在此范围内的住宅小区、公共建筑、公园绿地、市政道路、河道将根据建设需求逐步进行相关改造。海绵城市建设内容包括人行道透水铺装、停车位透水铺装、雨水调蓄池、下凹绿地、植草沟、渗渠等景观设施。

武夷花园小区在今年汛期前完成改造,下雨时路面不再积水。该项目施工技术负责人徐翔说,雨水经过透水混凝土层层过滤净化后下渗,在回补地下水的同时,可以通过新建的盲管收集进调蓄系统;下大暴雨时,更多的雨水经过小区雨水花园中的溢流口,排入小区地下管网。工程还将种植耐水和耐旱性比较好的树种,提升景观环境。

今年年底前,通州试点改造区域的年径流总量控制率将达到75%,也就是年均总降雨量75%的雨水不会形成径流,实现小雨不积水、大雨不内涝的海绵城市建设目标。

根据计划,2020年,通州区20%建成区的面积将达到海绵城市建设要求;2030年,通州区80%建成区的面积将达到海绵城市建设要求,最终成为小雨不积水、大雨不内涝、水体不黑臭、热岛效应有缓解的具有较高“海绵度”的生态宜居城市。

原标题:北京城市副中心启动20余个海绵城市改造项目
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