本文首先对于膨胀岩中的隧道设计问题一般性地介绍了膨胀现象和膨胀机理,并着重介绍了硬石膏、泥灰岩和页岩的膨胀问题,继而说明如何测定膨胀特征值以及影响膨胀的因素。以此作为依据,进而详细说明采用的试验——分析——设计程序,以及减少隧洞围岩膨胀的一些设计要点,并举出若干工程实例以阐明膨胀的作用和设计方法的实际应用。 In this paper, the expansion design and expansion mechanism are generally introduced for the design of tunnels in swollen rock, and the expansion of anhydrite, marl, and shale is highlighted. Then, how to determine the expansion eigenvalue and the factors affecting the expansion are explained. . Using this as a basis, we will elaborate on the tests used—analysis—design procedures, as well as some design points to reduce the expansion of tunnel surrounding rocks. We will also provide some engineering examples to clarify the role of expansion and the practical application of design methods.