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前三门大街,东起崇文门经前门、宣武门至西二环路,是横贯市中心区平行于长安街的交通干道(图1)。1970年地下铁道完工,地上修了宽阔的路面。路的南侧,由于护城河改为暗沟(盖板河),在道路与暗沟之间腾出一条宽17～37米的狭长空地。该处沿线为老城根,平房破旧,人口密集,生活设施短缺,急待改建。1975年,为了解决首
The former Sanmen Street is located in the east from Chongwenmen Qianmen and Xuanwumen to the West Second Ring Road. It is a traffic artery that runs through the downtown area and parallels Chang’an Avenue (Figure 1). In 1970, the underground railway was completed and a wide surface was built on the ground. On the south side of the road, because the moat was replaced by the ditch (covered river), a narrow open space 17 to 37 meters wide was vacated between the road and the ditch. Along the line is the old city roots, old cottages, dense population, living facilities shortage, anxious to be rebuilt. In 1975, in order to solve the first