some even lead to traffic

June 2009, 8, our correspondent DaiBing taken in chaoyang north road. (material photos)

From the municipal GuiHuaWei information displays that "Beijing urban rainwater drainage system planning and design standard research" has been in the recent passed the experts.

Reporters yesterday (11) contact Beijing urban planning and design of municipal institute ZhangXiaoXin, please his explanation of this study what bring to Beijing. In his description and in the coming years, citizens may gradually feel rain no longer seeper, road after heavy rains caused water plugging points less and less, landscape river water is more and more, even because rainwater concentration by using the residential area LuHuaOu irrigation cost reduction, property fee may reduce...

Rain is "resource" will be collected use

The reporter understands, in the new research fruits, the city while considering the plain, piedmont region and mountain area three types of terrain. Which is located in plain area of the urban core of rainwater will to supplement the river landscape water, the rain sank into underground supplement groundwater is given priority to, both large and small area greening greening irrigation, etc. And ecological underdeveloping rainwater utilization, mainly is the rainwater natural infiltration underground.

ZhangXiaoXin said, this city whether after modification of old drainage system, or newly built the drainage system, will be fully consider the rainwater collection and use, will rain as a valuable resource to use, which will help relieves water problems of Beijing. The rainwater collection means, is mainly introduced the landscape within the water, introducing inside the village 4-storey storage pools used for landscaping irrigation water into the city, or supplementary landscape water. Petrology,

Overpass seeper will be key cracked

Whether officials, or net friends draws the outline of "water", a map of this city show last year, when the city in at least 50 place seeper, jams for several hours.

Poor drainage water can cause, and evaluation of a drainage capacity index is "runoff coefficient", runoff coefficient refers to catchment area of rain water and certain ratio of rainfall, simply, is through the runoff coefficient, can see how much rain is not the ground directly absorb, and formed the water on the ground. ZhangXiaoXin say, because of the ground more city are hardening and surfacing and less land area, infiltration, resulting in urban rainwater weak ability JianSheOu comprehensive runoff coefficient tall.