玉溪海绵城市透水砖堵塞恢复方法研究
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摘要
针对云南玉溪海绵城市建设中透水铺装的情况,采用人工配制的SS溶液模拟降雨径流,探究不同的清洗方式对透水砖堵塞的恢复效果及对透水砖养护的影响,以延长透水砖的使用年限。12次堵塞/清洗实验结果表明,混合了柠檬酸钠的高压水清洗效果最佳,其次是普通高压水清洗、常压水清洗及使用毛刷清洗,透水系数分别维持在初始值的50%、36%、15%、0. 78%,毛刷刷洗几乎无效果。在湿润状态下清洗透水砖比干后再清洗效果更明显,透水系数分别维持在初始值的52%和36%。通过对清洗周期的分析,表明短期内频繁的清洗对透水性能的恢复有良好效果,但在长期使用中区别不大。
In view of permeable pavement in Yuxi sponge city construction in Yunnan,the artificially prepared SS solution was used to simulate rainfall runoff to explore the effects of different cleaning methods on clogging recovery and maintenance of permeable bricks,so as to extend their service life. After 12 times of clogging and cleaning experiments,the analysis showed that high pressure water cleaning with sodium citrate mixture had the best effect,followed by ordinary high-pressure water cleaning,normal pressure water cleaning and brush cleaning. Moreover, the water permeability coefficient was maintained at 50%,36%,15%,and 0. 78% of the initial value,respectively. In particular,brushing was almost useless. Cleaning the permeable bricks in wet state was more effective than drying,and the water permeability coefficient was maintained at 52% and 36%,respectively.Through the analysis of the cleaning cycle,it was shown that the frequent cleaning in the short-term had a good effect on the recovery of water permeability,but there was little difference in long-term use.
In view of permeable pavement in Yuxi sponge city construction in Yunnan,the artificially prepared SS solution was used to simulate rainfall runoff to explore the effects of different cleaning methods on clogging recovery and maintenance of permeable bricks,so as to extend their service life. After 12 times of clogging and cleaning experiments,the analysis showed that high pressure water cleaning with sodium citrate mixture had the best effect,followed by ordinary high-pressure water cleaning,normal pressure water cleaning and brush cleaning. Moreover, the water permeability coefficient was maintained at 50%,36%,15%,and 0. 78% of the initial value,respectively. In particular,brushing was almost useless. Cleaning the permeable bricks in wet state was more effective than drying,and the water permeability coefficient was maintained at 52% and 36%,respectively.Through the analysis of the cleaning cycle,it was shown that the frequent cleaning in the short-term had a good effect on the recovery of water permeability,but there was little difference in long-term use.
引文
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[5]尹洪军,彭颖.海绵城市设施及材料选型探讨[J].给水排水,2016,42(S1):250-254.Yin Hongjun,Peng Ying.Discussion on the selection of sponge city facilities and materials[J].Water&Wastewater Engineering,2016,42(S1):250-254(in Chinese).
[6]张朝辉,王沁芳,杨娟.透水混凝土强度和透水性影响因素研究[J].混凝土,2008(3):7-9.Zhang Zhaohui,Wang Qinfang,Yang Juan.Influence factors of compressive strength and permeability of pervious concrete[J].Concrete,2008(3):7-9(in Chinese).
[7]蒋玮,沙爱民,肖晶晶,等.多孔沥青混合料的空隙堵塞试验研究[J].建筑材料学报,2013,16(2):271-275.Jiang Wei,Sha Aimin,Xiao Jingjing,et al.Experimental study on the clogging of porous asphalt concrete[J].Journal of Building Materials,2013,16(2):271-275(in Chinese).
[8]王俊岭,刘栓,宋健,等.透水混凝土路面堵塞对径流水质控制影响试验研究[J].混凝土,2017(6):140-143.Wang Junling,Liu Shuan,Song Jian,et al.Experimental on the control effect of the blockage of pervious concrete pavement for runoff water quality[J].Concrete,2017(6):140-143(in Chinese).
[9]王建龙,许怀奥,黄涛,等.北京市道路沉积物的粒径分布及其污染特性研究[J].科学技术与工程,2018,18(3):9-14.Wang Jianlong,Xu Huaiao,Huang Tao,et al.The research of size distribution and pollution characteristics of road sediments in Beijing[J].Science Technology and Engineering,2018,18(3):9-14(in Chinese).
[10]莫文锐,田森林,黄建洪,等.百年一遇大旱后城区降雨径流污染时空差异与可生化性[J].地球与环境,2012,40(2):227-231.Mo Wenrui,Tian Senlin,Huang Jianhong,et al.Temporal-spatial distribution of pollution and biodegradability in precipitation runoff in urban area after the once-in-a-century drought[J].Earth and Environment,2012,40(2):227-231(in Chinese).
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[12]王志良,张永山.昆明年降雨量时间序列的混沌分析[J].华北水利水电学院学报,2011,32(2):8-10.Wang Zhiliang,Zhang Yongshan.Chaos analysis of time series of Kunming annual precipitation[J].Journal of North China Institute of Water Conservancy and Hydroelectric Power,2011,32(2):8-10(in Chinese).
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