在任何比较重要的施工方案着手以前,基于可利用的现场资料和调查报告作出的各项设计均已完成。虽然标明有不同种类岩石的岩石支护细部的设计图纸已发给结构工程师,在实际施工中根据它来设置支护,但在隧道工程和洞库构筑物中仍有失误发生。在施工能按要求的速度继续进行以前,为了稳固影响施工的那部份岩体,宝贵的时间被浪费掉了,在本文中作者力图对设计图纸之外常会出现的问题提出分析解答。 All designs based on available field data and survey reports have been completed prior to any more important construction program. Although design drawings indicating the details of rock support for different types of rock have been sent to the structural engineer, support has been set according to the actual construction, but there are still some mistakes in the tunneling works and the structures in the tunnel. Before the construction can continue at the required speed, precious time is wasted in order to stabilize the part of the rock mass affected by the construction. In this paper, the author tries to give an analysis and answer to the problems that often appear outside the design drawings.