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Technology for Scaled Treatment of Karst in Tunnels on Yichang-Wanzhou Railway
Author(s): 
Pages: 68-72
Year: Issue:  8
Journal: Railway Standard Design

Abstract: 宜万铁路是目前国内外已建和在建工程中岩溶及岩溶水最发育、最复杂的工程,159座隧道中岩溶隧道占91座,采取结构措施处理的岩溶共1 088处,岩溶的类型主要分为暗河、管道、贫水溶洞、富水溶洞以及裂隙和断层,针对相同类型的岩溶,采取了规模化的处理措施,主要有注浆加固、溶腔防护加固、分水降压、释能降压、迂回绕避和隧底溶腔桩基、注浆、钢管桩、加强板、拱桥等溶腔处治技术.
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