Japan is one of the most earthquake-prone countries in the world. The Great East Japan Earthquake that struck on March 11, 2011 devastated a vast area centered on three prefectures in the Tohoku region (Fukushima, Miyagi, and Iwate), and there is said to be a more than 70% probability of a magnitude 7 earthquake striking Tokyo—the nation’s capital—within the next 30 years.

Under these circumstances, various measures are being considered for application to a range of facilities, transportation systems, and infrastructure in Japan in order to protect people’s lives and—at the very least—reduce damage in the event of an earthquake, but in reality no one can image the kind of situation that would unfold should an earthquake actually occur.

Sandwiched between Tokyo Station and the Imperial Palace in the center of Tokyo, the Otemachi, Marunouchi, and Yurakucho districts (known colloquially as the “Daimaruyu” area) comprise one huge business district where there is a concentration of representative Japanese companies—including major banks, trading companies, and newspapers—and Japan offices of foreign corporations. In addition to protecting human life, this area potentially faces another serious challenge in the event of a major earthquake—preventing disruption to the businesses operating within it.

In order to be able to do this, strengthening and redundancy of infrastructure such as energy, water, and heating and cooling systems are required. In order to achieve this strengthening and redundancy of energy, water, and heating/cooling infrastructure, utility and service tunnels for installing energy, water, and air-conditioning supply pipes are currently being constructed at a depth of 20–30 meters below ground in the Daimaruyu area. This paper provides an overview of the significance and purpose of this service tunnel construction as well as the project content.

日本是世界上地震最频繁的国家之一。2011 年 3 月 11 日发生的东日本大地震，以东北地区的三个县（福岛、宫城、岩手）为中心，大面积破坏，据说发生 7 级地震的概率超过 70%在未来 30 年内袭击日本首都东京。

在这种情况下，日本正在考虑将各种措施应用于日本的一系列设施、交通系统和基础设施，以保护人们的生命，并至少在发生地震时减少损失，但实际上没有如果地震真的发生，人们可以想象会出现什么样的情况。

大手町、丸之内和有乐町地区（俗称“大丸汤”地区）夹在东京站和东京市中心的皇居之间，是一个巨大的商业区，集中了包括主要银行在内的代表性日本公司、贸易公司和报纸——以及外国公司的日本办事处。除了保护人类生命之外，该地区还可能在发生大地震时面临另一项严峻挑战——防止在其中运营的企业受到干扰。

为了能够做到这一点，需要加强和冗余基础设施，如能源、水、加热和冷却系统。为了实现能源、水和供暖/制冷基础设施的强化和冗余，目前正在地下 20-30 米的深度建设用于安装能源、水和空调供应管道的公用设施和服务隧道。大丸汤地区。本文概述了本次服务隧道建设的意义和目的以及项目内容。