洞穴——从微中子研究到地下空间规划

微中子研究需要很大很深的洞穴，以便在没有太多宇宙射线噪音的情况下捕获重要事件。大型的自然洞穴往往出现在喀斯特石灰岩地区，少数大型洞穴也会出现在矿区，而民用洞穴则被广泛用作发电站、火车站、仓库及其他用途。应力控制被认为是在洞穴深挖中消除巨大应力的普遍方法。如果能够在大型洞穴使用应力控制方法，我们就可以建造安全的洞室来进行微中子研究；从另一方面来讲，大而浅的洞穴也能解决城市规划的很多问题。

Caverns, from Neutrino Research to Underground City Planning

Neutrino research asks for very large and very deep caverns, to capture significant events without too much noise from cosmic rays. Large natural caverns occur in karstic limestones. Mining provides a few large caverns. Civil caverns have been extensively used worldwide for electricity generation, for railways stations, for storage, and more. Strain control is known as a general means for relieving extreme stresses around deep openings. If we can adapt strain control to large caverns, we shall build safe caverns for neutrino research. On the other hand, large shallow caverns will provide answers to many problems of city-planning.