论文部分内容阅读
云峰工程的隧洞进水口,由于开挖的跨度和高度比較大,岩石又不甚完整,洞頂部分有斜交洞軸的断层通过,并将頂板岩石切成不稳定的楔形体,考虑到施工安全,故选定先衬砌頂板的方案,因而浇注混凝土时,必須采用先上后下的順序进行。我們称上下两块混凝土之間形成的頂縫为反縫,而反縫和下部的正缝之間的单独浇注块称为反縫浇注块,以下我們統称反縫。反縫的施工問題就因此而产生。
Due to the relatively large span and height of excavation and the incomplete rock, the tunnel inlet of Yunfeng project passes through the fault with oblique oblique hole axis and the top rock is cut into unstable wedge, taking into account Construction safety, it is selected first lined roof plan, so pouring concrete, you must use the order of the first to last. We say that the top seam formed between the upper and lower two concrete is the reverse seam, while the separate casting block between the reverse seam and the lower positive seam is called the reverse seam casting block. Hereinafter we will refer to the counter seam. As a result, the problem of reverse seam construction.