The results indicate that the perforated pavement and perforated rainwater drainage pipe system reduce run off and replenish underground water remarkably.
试验结果表明，采用透水铺盖面及渗透式雨水管道系统，对削减径流、补充地下水源有显著效果。
Safety the highly effective convenience drainage system may prevent the valley between roofs and the down - flow pipe damage guaranteed the roof does not tie the snow and ice the icicle.
安全，高效便利的排水系统可以防止屋顶天沟及下水管的损坏，保证屋顶不结冰雪、冰柱。
Compared with gravity drainage system, it has the advantages of small pipe diameter and installing space, non-sloped suspended pipe, less sewage connecting and underground pipes and etc.
与重力排水系统相比，具有管径小、管道安装要求空间小、悬吊管无坡度、下水道连接管和埋地管少等优点。
Safety the highly effective convenience drainage system may prevent the valley between roofs and the down-flow pipe damage guaranteed the roof does not tie the snow and ice the icicle.
安全，高效便利的排水系统可以防止屋顶天沟及下水管的损坏，保证屋顶不结冰雪、冰柱。
Air blower aeration was adopted in Shaoxing Wastewater Treatment Plant, where exist some disadvantages, such as the falling-off of blind lid from aerated pipe and malfunction of drainage system.
绍兴污水处理厂采用鼓风曝气，在运行过程中存在曝气管盲盖脱落现象，排水系统也存在缺陷。
WAB single riser drainage system is a special kind of single stand pipe drainage system which has been widely used in engineering practice in our country.
WAB型单立管排水系统属于管件特殊类单立管排水系统，在国内已广泛地应用于工程实际。
The article discusses the operation safety problems that the sewage pipe is leaked and the underground water source is polluted in the operation of the urban drainage system in Handan City;
该文论述了邯郸城市排水系统运行中存在的污水管道渗漏，污染地下水资源； 汛期道路和下穿立交桥下积水影响交通；
The physical model tests were performed to study the influence of pipe drainage system on soil permeability, groundwater level and slope residual downslide thrust.
为了研究管网渗流系统对土体渗透性能和地下水位以及边坡剩余下滑推力的影响，进行管网渗流系统的物理模拟试验。
Compared with gravity drainage system, it has the advantages of small pipe diameter and installing space, non-sloped suspended pipe, less sewage connecting and underground pipes and etc.
屋面雨水排水采用虹吸排水系统较重力排水系统，具有管径小、所需管道安装空间小、悬吊管道无坡度、下水道连接管和埋地管少等优点。
Pipe drainage system has big control of excluding agricultural groundwater and soil moisture and raise the utilization of land area.
暗管排水可以很好的控制排除农田地下水和土壤含水量，提高土地利用率。
The pipe filter must be shut down for cleaning and drainage regularly during its operation, and this usually interferes with the long-period operation of the equipment in the system.
管道过滤器在运行过程中必须定期停车清洗、排污，往往影响系统设备长周期运行。
The pipe filter must be shut down for cleaning and drainage regularly during its operation, and this usually interferes with the long-period operation of the equipment in the system.
管道过滤器在运行过程中必须定期停车清洗、排污，往往影响系统设备长周期运行。
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