【正文】 to billion yuan and kept a growth speed by 10% continuously for several years. And asset of the city increased from 361 billion yuans to billion yuans. Development of city construction in Dalian owns to land operation to a great extent. Dalian put firstly forwarded the slogan of City Operation and insisted on obtaining fund support necessary for city construction from land operation so as to realize value growth of city assets Along with the largescaled road and plaza constructions in past several years, cable application level of Dalian city has been raised rapidly. Unlike Land Fund Model of Shenzhen city, cable construction of Dalian city is mainly borne by power supply bureau and government provides grandinaid to some important road and plaza constructions. In past several years, responding to the request of municipal government, power supply bureau invested large amount of fund for grid rebuilding into cable construction. Along with the pletion of grid rebuilding, power cable construction also slowed down. Power supply bureau hopes to invest more on capacity expansion of power supply. Overhead wires of many roads has still not been buried underground even after the pletion of grid rebuilding. 第四部分 —— 大連34SINOTRUST新 華 信電力電纜入地推廣研究Power Supply Bureau of Dalian City: No ability to continue supporting the underground construction of overhead wiren At present, the rate of underground cable application in Dalian city has reached to 33% with the length about 13001800 km. All the underground cable adopt copper as the conductor. According to the power supply bureau in Dalian city, copper cable of excellent quality will be beneficial to the good quality of power supply. So they insisted on using copper cablen Underground construction of overhead wire is mainly the responsibility of power supply bureau and there are totally three types of fund resources: 4 One main part is the fund for grid rebuilding which is obtained through crediting. Up to 2023, power supply bureau in Dalian city has invested fund of 450 million yuans for underground construction of overhead wire. It is 60%70% of fund investment for whole underground construction of overhead wire4 Second part is the grandinaid provided by government for key engineering construction4 The third resource is the fund invested by users themselves. This fund is mainly used to the construction of new resident areas and institutional units n According to power supply bureau, they have had no ability to continue supporting the underground construction of overhead wire after pletion of rural grid rebuilding. They can only invest at most 10%20% by their current strength. They have no special requirement for construction method and are willing to receive any type of method which is as long as conforming to safety requirementn According to power supply bureau, their current burden is over heavy, deterioration of urban grid is serious and safety performance is lowered down. Therefore, they will first use the fund to the rebuilding of grid so as to resolve safety question. Underground construction of overhead wire should belong to beauty work of city construction. Principal part of the work should be the government. They hope that government could take the head to invest第四部分 —— 大連35SINOTRUST新 華 信電力電纜入地推廣研究Experiences of Dalian city: Whether a city can be given the treatment of infrastructure for underground construction of cable?n City construction of Dalian absorbed the successful experiences of city construction investment in foreign cities and constructed the famous Plaza City of which the public infrastructure construction and management experiences are valuable to be praised in whole country. For example:4 The method that price is determined by incremental cost is also used to charging public facilities. This method can realize reasonable resource distribution4 Social capital is regulated and controlled by financial fund. Government invests to construct 7 Facilities and 1 Plain, and introduce developer to undertake construction of surface buildings4 Largescaled scenery points and buildings are constructed through enlarging financial circulation and attracting foreign investment 4 Road and bridge are jointly developed through inviting tender, etc. n However, power cable construction in Dalian was not given the treatment similar to green land, road and bridge construction. Actually, power supply bureau bore the large part of expenditure. The truth shows that cable construction speed in Dalian has return to the lowest historical level of 10 km per year and there are still large number of overhead wire hanging over the skyn Dalian city has accumulated a lot of advanced experiences in concentrating social strength to construct public facilities. Suppose that cable construction is given the treatment of infrastructure and listed into construction system of infrastructure so as to share the burden of power supply bureau, the overhead wire in Dalian city may be eliminated earlier第四部分 —— 大連36SINOTRUST新 華 信電力電纜入地推廣研究Guangzhou: Though government has invested huge fund, overhead wires are still not buried underground Guangzhou city is now at the stage of rapid development. Governmental investment to city construction is over ten billion yuans each year. Road transportation work system based on frame of highway, main artery roads and secondary artery roads has basically formed Guangzhou municipal government concerns on city appearance and requests principally that overhead wire should be buried underground along with road construction. Both the government and power supply bureau share the half investment each other:4 Newly constructed road engineering in urban district adopts basically underground cable and no overhead wire appears any more. This fund is pr