摘要
透水性铺装地面是雨水利用的重要措施之一。该文通过建立透水砖铺装地面物理模型,采用3种透水砖铺装形式(垫层由不同厚度的无砂混凝土、碎石、中砂组合而成)和1种不透水砖铺装(对照),研究不同垫层结构的透水砖铺装地面在降雨条件下的产流与入渗规律。结果表明:3种透水砖铺装地面系统对地面产流均具有明显的削减作用;在模拟降雨强度为59.36 mm/h的情况下(相当6年1遇1h降雨量),无砂混凝土10 cm和石子15 cm垫层结构的入渗效果最优,此时无地面产流,其径流系数比不透水性铺装对照处理减小85%。
Three available porous pavement systems were studied to evaluate their infiltration capabilities oi precipitation. Experiments were conducted to simulate different kinds of porous pavements with different subbase materials in each of catchments, and the discharge volumes from each cell were monitored. The relationship between rainfall intensity, outflow and outflow duration was analyzed. Physical models were established in the laboratory. Results showed that all treatments of the porous pavements increased infiltration and decreased runoff. In all treatments, the optimum thickness of the porous pavement was 31-cm, which consisted of a 6-cm top layer of porous concrete and a 25-cm sub-base （10-cm concrete without sand and 15-cm aggregate base）. Under a rainfall rate of 59.36 mm/h, the runoff coefficient of treatment B is 0 while the coefficient of the impervious pavement is 0. 85.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2006年第9期100-105,共6页
Transactions of the Chinese Society of Agricultural Engineering
基金
教育部新世纪优秀人才支持计划(NCET-04-0127)
国家自然科学基金项目(50409013)
北京市优秀人才培养专项经费资助项目(20041D0200201)
