日本东京政府的计划人员展望在此以前更深的地下建设一系列工程：从更好的供水和供气系统．到开凿公路和高速火车隧道，应有尽有。日本田土厅一位官员说，新技术已经开辟了在下101m处建设的途径。此前，公共设施或地铁使用的隧道深度通常不超过11m。东京向地卜深处特之心挖掘的 The planners of the Tokyo government of Japan are looking forward to building a series of projects deeper underground here: from better water supply and gas supply systems. There are everything from cutting highways to high-speed train tunnels. An official from the Japan Lands Office said that the new technology has opened up a way to build at the next 101m. Previously, the depth of tunnels used by public facilities or subways usually did not exceed 11m. Tokyo excavated into the heart of the earth