The construction of underground common ditch and sponge city is a sustainable development concept put forward in recent years, which is in the exploration stage in urban construction. Many places in China don't know enough about the importance and urgency of sponge city, underground common ditch construction and sewage treatment. I don't know how to do it. Can it work the first time? Many people ask questions like this. At present, the relevant national systems are not perfect, it is difficult for local governments to introduce policies, and some places are afraid of difficulties, resulting in insufficient actions, insufficient implementation, and insufficient methods and measures to solve difficulties and problems.
Take the underground comprehensive pipe trench as an example. The investment of Gonggou project is huge, there is no guiding standard for sharing the input cost, and the construction standard is not uniform. In the construction of underground common ditch in some places, due to institutional reasons, most pipeline units implement vertical management, local pipeline enterprises lack the right to speak, and it is difficult to coordinate the work of entering the corridor and charging. The problems of thought and communication cast the first barrier to the construction of underground common ditch and sponge city.
Planning is difficult, and projects are difficult to implement.
Planning is the leader of construction and development. To build a good city, planning must go ahead. In many places, the responsibility of sponge city construction planning is unclear and the planning is slow. The reporter learned that the planning standards of cities that have completed underground pipeline planning are not high enough. The underground common ditch planning in many cities does not include all pipelines in the pipe gallery, and the sponge city planning does not effectively connect with the urban drainage and waterlogging prevention planning and the underground common ditch planning. In the old cities of major cities, the construction of underground common ditch and sponge city is affected by land requisition and demolition, relocation of existing pipelines, railway network, rail transit and other factors, so it is difficult to select the project path and area, and it is difficult to organize and implement. Planning and implementation problems pose a second obstacle.
Financing is difficult, PPP is difficult to operate.
Public expenditure in small and medium-sized cities is limited, so it is very difficult to raise construction funds. Although the country has vigorously promoted the PPP model to build comprehensive underground pipe gallery and sponge city construction projects, and issued a series of supporting policies, the rise of PPP model in China is still short, and there are few successful cases. On the one hand, the research on PPP mode is insufficient, the experience is insufficient, the procedure is complex, the operation cycle is long and the operation is difficult; On the other hand, using PPP mode to invest in construction, social capital is unwilling to contact and invest, so it is difficult to apply for special bonds or credit funds of policy banks to invest in construction. "A clever woman can't cook without rice" aptly describes the current predicament. The problem of funds has also become the third barrier for the construction of underground common ditch and sponge city. In order to break these three barriers and promote the construction of sponge city and underground common ditch, some areas in Hubei Province have actively explored. For example, on 20 16, Wuhan started to build an underground common ditch with a target task of 40 kilometers, and identified six projects: Tianhe Airport Phase III Project, Wuhan Central Business District, Donghu High-tech Optical Valley Center City, Dongxihu Wujiashan New City, Caidian Sino-French Ecological New City, and Zhushan Road Common Ditch in Economic Development Zone; In the project of Huangshi Garden Expo Park, rainwater utilization technology is combined with green landscape at the same time, and the concept of "sponge" is realized through measures and design means such as permeable pavement, grass planting ditch setting, covering soil for greening and sinking green space.
All localities should fully understand the necessity of promoting the construction of underground common ditches and sponge cities; According to the "Guiding Opinions of General Office of the State Council on Promoting Urban Construction and Common Ditch Construction" and "Guiding Opinions of General Office of the State Council on Promoting Sponge City" and other documents, combined with the overall urban planning, make overall plans on the ground and underground, and accelerate planning from a high starting point; In terms of capital operation, we should innovate the investment model, actively use the cooperation model of government and social capital, and actively strive for the support of national policy funds and special funds for projects; In the process of speeding up the construction progress, we should firmly establish quality consciousness, conscientiously implement the main responsibilities of construction, construction, design supervision and other parties, and ensure the quality of the project. Let the construction of underground common ditch and sponge city benefit the people as soon as possible.