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赫尔辛基在过去１０年地下建设有相当大的增长，在１９８９年，该市已开发４５０万ｍ３地下空间。在八十年代平均每年地下建设速度约为３０万ｍ３。为了鼓励有计划地开发利用地下空间，该市已将地下开发纳入其城市规划系统。本文还叙述现用于赫尔辛基地下发展开发规划的一个高级岩土工程和地图信息系统。在芬兰首都，地下建设的容量和变化亦揭示了地下开发中行政管理和法律上的不足，由环境部建立的一个委员会已调查有关地下空间规划和建设许可方面现时的实际做法，并推荐制定地下空间利用所特有的规章制度。本文还叙述通过诸如上的改良和海岸地区填土等利用土地的建设来取得额外建设土地的“预建设”方法。
Helsinki has seen considerable growth in underground construction over the past 10 years. In 1989, the city had developed 4.5 million m3 of underground space. In the 1980s, the average annual underground construction rate was about 300,000 m3. To encourage the planned development and use of underground space, the city has incorporated underground development into its urban planning system. This article also describes a high-level geotechnical engineering and map information system currently used for development and development planning under the Helsinki site. In the Finnish capital, the capacity and changes in underground construction also revealed administrative and legal deficiencies in underground development. A committee established by the Ministry of the Environment has investigated the current practical practices in underground space planning and construction licensing and recommended the development of underground The unique rules and regulations for space use. This article also describes the “pre-construction” method for acquiring additional land for construction through the use of land, such as improvement and land reclamation on the coast.