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首页> 外文期刊>Tunnelling and underground space technology >Model test to investigate waterproof-resistant slab minimum safety thickness for water inrush geohazards
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Model test to investigate waterproof-resistant slab minimum safety thickness for water inrush geohazards

机译：进行模型试验以研究防水板的最小安全厚度，以应对突水地质灾害

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摘要

The study of waterproof-resistant slab minimum safety thickness for water inrush geohazards is of great significance during the design and construction phase of tunnel engineering. Firstly, to obtain minimum safety thickness of rock wall of tunnel face, a simplified model for simulating the whole process of water inrush disasters is established. Then a three-dimensional (3D) model test system which can be applied to simulate water inrush geohazards, is researched and manufactured. Based on Yuelongmen tunnel of Chengdu to Lanzhou railway line in China as the engineering background, a series of large-scale geomechanical model test have been carried out. The effect of strata pressure, hydraulic pressure and waterproof-resistant slab thickness of surrounding rock on water inrush disaster is studied. Model test results show that minimum safety thickness increases with the increase of strata pressure and decreases with the increase of hydraulic pressure. Besides, there are two main destruction characteristics on tunnel face for water inrush disaster. One is the shear failure occurred at the center of tunnel face which accounts for most of the destruction form. The other is osmotic instability occurred at the edge of tunnel face. (C) 2016 Elsevier Ltd. All rights reserved.
机译：在隧道工程的设计和施工阶段，研究突水灾害的防水板最小安全厚度具有重要意义。首先，为了获得最小的巷道围岩安全厚度，建立了简化模型，模拟了整个突水灾害。然后研究和制造了可用于模拟突水地质灾害的三维模型测试系统。以我国成都市兰州铁路月龙门隧道为工程背景，进行了一系列大型岩土力学模型试验。研究了围岩地层压力，水力压力和防水层厚度对突水灾害的影响。模型试验结果表明，最小安全厚度随地层压力的增加而增加，随液压压力的增加而减小。此外，因突水灾害，隧道工作面有两个主要破坏特征。一种是在隧道工作面中心发生的剪切破坏，这是大部分破坏形式的原因。另一个是在隧道工作面边缘发生的渗透不稳定。 （C）2016 Elsevier Ltd.保留所有权利。

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  • 来源
  • 作者

    Jiang Hai-ming; Li Lang; Rong Xiao-li; Wang Ming-yang; Xia Yuan-pu; Zhang Zhi-cheng;

  • 作者单位

    PLA Univ Sci & Technol, State Key Lab Disaster Prevent & Mitigat Explos &, Nanjing 210007, Jiangsu, Peoples R China;

    PLA Univ Sci & Technol, State Key Lab Disaster Prevent & Mitigat Explos &, Nanjing 210007, Jiangsu, Peoples R China|Equipment Acad Rocket Force, Beijing 100085, Peoples R China;

    PLA Univ Sci & Technol, State Key Lab Disaster Prevent & Mitigat Explos &, Nanjing 210007, Jiangsu, Peoples R China;

    PLA Univ Sci & Technol, State Key Lab Disaster Prevent & Mitigat Explos &, Nanjing 210007, Jiangsu, Peoples R China;

    PLA Univ Sci & Technol, State Key Lab Disaster Prevent & Mitigat Explos &, Nanjing 210007, Jiangsu, Peoples R China;

    PLA Univ Sci & Technol, State Key Lab Disaster Prevent & Mitigat Explos &, Nanjing 210007, Jiangsu, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Water inrush; Minimum safety thickness; Tunneling;

    机译：突水;最小安全厚度;隧道;

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