Study On The Construction Management Of "Sponge City" In Ji' Nan

With the continuous development of the city and the continuous progress of urbanization, the contradiction between human and natural environment is becoming increasingly prominent, the building increased, green reduction, air pollution, water resource destruction, land desertification and hardening and other issues, not only seriously damaged the natural ecology of Pahang, lowers the city water, water purification ability, problem to increase the surface runoff, groundwater pollution and reduce the water level, flood disasters, river ecological deterioration."Sponge city" is a new concept, first proposed in our country in April 2012, "2012 low carbon city and regional development science and Technology Forum"; In December 12,2013, the general secretary Xi Jinping further emphasized in "working conference", "central towns, improve the city drainage system should give priority to the limited rainfall stay, plus more use of the forces of nature and drainage, construction of natural deposits, natural infiltration and natural purification of the sponge city". In support of the State Ministry of housing and urban construction, organize the preparation of the "sponge city" construction technology guide-low impact development of rainwater system (Trial) "," guide the promotion of demonstration by sponge City, permeability, stagnation, storage, net, exhaust and other measures will be 70% of the city's rainfall local consumption and make full use of. In order to better promote the "sponge city" construction, the state promulgated the "sponge city" pilot project in 2015, based on the strict review, selected the first batch of pilot city, the provincial capital of Shandong, Ji'nan is one of them. Up to now, there are more than and 130 cities have developed a more perfect "sponge city" construction program, and many other cities have begun to integrate into the "sponge city" theory in urban construction. "Sponge city", also called "water elastic city", it is the integration of a new generation of city stormwater management concept, make the city with good "flexibility" to deal with the change of natural environment and the flood and drought disaster. When it rains, it can absorb water, water, water, water, water, water can be "released" out of the storage of water and to use. The essence of "sponge city" is to carry out urban construction based on the ecological process of natural water in the protection area, to realize the urban construction and the natural resources environment, especially the harmonious coexistence of water resources and environment. The construction of "sponge city", we must adhere to ecological priority, "slow release row" and "source dispersion" control principle, in the premise of ensuring the safety of city drainage waterlogging, using the natural way and grass ditch, rain gardens, sunken green space for "green" artificial way to build and repair City sponge the accumulation of rainwater in city area, and the infiltration and purification, so as to achieve the recycling of rainwater resources and protect the ecological environment of the objective. Compared to the traditional urban construction mode, the construction of "sponge city", will be able to maximize the impact of urban construction on the ecological environment of the water. In order to speed up the pace of "sponge city" construction, realize the city construction science, ecology and sustainable development in Shandong, the capital city of Ji'nan city as an example, to study the "sponge city" construction and management mechanism, to explore the optimization countermeasures, hoping for the promotion and popularization of China's "sponge city", to provide a theoretical reference and practice some.ng for the promotion and popularization of our country sponge city construction, provide a reference.