| 岩溶隧道涌突水破坏模式分类及防突厚度研究 |
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| 引用本文： | 肖喜,赵晓彦,张巨峰,肖勇,莫培. 岩溶隧道涌突水破坏模式分类及防突厚度研究[J]. 工程地质学报, 2022, 30(2): 459-474. DOI: 10.13544/j.cnki.jeg.2021-0247 |
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| 作者姓名： | 肖喜 赵晓彦 张巨峰 肖勇 莫培 |
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| 作者单位： | ①.西南交通大学地球科学与环境工程学院，成都 611756，中国 |
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| 基金项目： | 国家自然科学基金;四川省科技厅科技计划项目 |
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| 摘 要： | 在岩溶山区进行隧址选择时,隧道与溶洞之间的防突岩体厚度是重要因素之一.在岩溶隧道修建过程中,若岩墙厚度保留过小,则岩溶水涌出造成安全事故、经济损失和工期延误.目前涌突水破坏分类较为笼统且大多忽略了隧道围岩的岩体结构对防突厚度的影响.本文首先从岩溶隧道围岩的结构类型、溶洞与隧道之间的相对大小和相对位置的角度进行涌突水破坏...
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| 关 键 词： | 隧道突水 破坏模式 防突厚度 |
| 收稿时间： | 2021-05-07 |
CLASSIFICATION OF WATER INRUSH FAILURE MODE AND ROCK THI-CKNESS FOR PREVENTING WATER INRUSH IN KARST TUNNELS |
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| XIAO Xi,ZHAO Xiaoyan,ZHANG Jufeng,XIAO Yong,MO Pei. CLASSIFICATION OF WATER INRUSH FAILURE MODE AND ROCK THI-CKNESS FOR PREVENTING WATER INRUSH IN KARST TUNNELS[J]. Journal of Engineering Geology, 2022, 30(2): 459-474. DOI: 10.13544/j.cnki.jeg.2021-0247 |
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| Authors: | XIAO Xi ZHAO Xiaoyan ZHANG Jufeng XIAO Yong MO Pei |
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| Affiliation: | ①.Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 611756, China②.China Railway Nineteenth Bureau Group Seventh Engineering Co., Ltd., Zhuhai 519000, China |
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| Abstract: | The thickness of rock mass for prevention of water inrush between tunnel and karst cave is one of the important factors in selecting a tunnel site in karst mountain area. In the process of karst tunnel construction,karst water gushing often leads to some accidents,economic losses or construction delay if the wall thickness is too thin. The classification of water inrush failure types is simple. Most classification studies ignore that the structure of tunnel surrounding rock can affect the thickness of rock mass for prevention of water bursting. This paper studies the inrush model in rock mass failure from three aspects: the structure type of surrounding rock of karst tunnel,the relative size and relative position between karst cave and tunnel. Then the failure modes can be subdivided into many mechanical models including beam model,rectangular or circular thin plate model,punching shear column model,wing crack tension through model,tension shear composite fracture model,bedding slip model. Finally,the different failure models are used to summarize the calculation formulas of the thickness of rock mass for prevention of water inrush. The findings can provide suggestions for tunnel route selection in karst area,and provide reference for predicting water inrush geological disasters during tunnel construction. |
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