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首页> 外文会议>International Conference on Geological Engineering >Early stage tunnel lining experimental study of Jinhuashan railway tunnel construction within soft and weak rock mass
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Early stage tunnel lining experimental study of Jinhuashan railway tunnel construction within soft and weak rock mass

机译：金华山铁路隧道施工早期隧道衬砌试验研究软弱岩体

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摘要

Polypropylene fiber reinforced concrete can improve the common concrete flexibility and it is beneficial for interaction between concrete lining structure and rock mass. The use of fiber reinforced concrete with wet sprayed concrete technique can improve the concrete lining structure construction quality and improve the rock mass self-bearing capacity. The wet-sprayed fiber reinforced concrete is first introduced in Jinhuashan railway tunnel early stage lining structure within soft and weak rock mass. The design of Jinhuashan railway tunnel lining structure using fiber reinforced concrete is introduced and the requirement of material used is explained. To evaluate the lining effect using wet-sprayed fiber reinforced concrete, the online monitoring method is used to measure the rock mass pressure and the concrete lining layer stress for both the experimental tunnel sections and comparison tunnel section. The monitoring data result shows that the rock mass pressure in experimental section is even distribution with lower rock mass pressure and lower concrete lining layer stress. The value of rock mass pressure and tunnel lining layer stress in comparison tunnel section is a little higher than that in experimental tunnel section. The experimental tunnel section using fiber reinforced concrete has good lining effect.
机译：聚丙烯纤维钢筋混凝土可以提高常见的混凝土柔性，有利于混凝土衬砌结构与岩体之间的相互作用。采用湿式喷涂混凝土技术的纤维钢筋混凝土可以提高混凝土衬砌结构施工质量，提高岩体批量交通能力。湿喷纤维钢筋混凝土首先在金华山铁路隧道早期衬砌结构中引进，柔软，弱岩体。介绍了利用纤维钢筋混凝土金花山铁路隧道衬砌结构的设计，并解释了所用材料的要求。为了评估使用湿喷纤维钢筋混凝土的衬里效应，在线监测方法用于测量实验隧道部分和比较隧道部分的岩体质量压力和混凝土衬砌层应力。监测数据结果表明，实验部分中的岩体压力甚至具有较低岩石质量压力和较低的混凝土衬砌层应力的分布。比较隧道部分中的岩石质量压力和隧道衬砌层应力的值比实验隧道截面略高。使用纤维钢筋混凝土的实验隧道段具有良好的衬里效果。

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