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香港,面积为1000km~2,有人口近600万,可能要算是太平洋沿岸和世界上发展最快的地区中最有生气的一个城市,但是几乎80％的香港人都居住或工作在一个不到100km~2的范围内,成为世界上人口密度最高和最拥挤的城市之一。为了适应经济发展,香港对电力的需求也在日益增长,为满足这一要求,便提出在一个采用高架电缆非常需要空间的地方修建一座直径为4.8m,长5.7km的地下公用事业设备隧道(简称公用隧道),以使之成为香港岛配电网络系统的一部分。采用掘进机和预制混凝土法,可以从根本上降低嗓音、振动和粉尘,并可减少对公众造成的麻烦,而且也缩短了施工时间,节省了施工费用。本文将介绍在这种条件下这座公用隧道的规划、设计和施工情况。
Hong Kong, with an area of 1000km ~ 2 and a population of nearly 6 million, may be the most vibrant city on the Pacific coast and the fastest-growing areas in the world. However, almost 80% of Hong Kong people live or work in less than one place 100km ~ 2, making it one of the most populated and densely populated cities in the world. In order to meet the economic development, the demand for electricity in Hong Kong is also growing. To meet this requirement, a tunnel of underground utility equipment with a diameter of 4.8m and a length of 5.7km is required in a place where it takes much space to use overhead cables Referred to as public tunnels) to make it a part of Hong Kong Island’s distribution network system. The use of roadheaders and prefabricated concrete methods can radically reduce noise, vibration and dust, and reduce the public caused trouble, but also shorten the construction time and save construction costs. This article will introduce the planning, design and construction of this public tunnel under such conditions.