| 宜万铁路野三关隧道“8.5”突水事故成因分析 |
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| 引用本文： | 邬立,万军伟,陈刚,赵璐.宜万铁路野三关隧道“8.5”突水事故成因分析[J].中国岩溶,2009,28(2):212-218. |
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| 作者姓名： | 邬立 万军伟 陈刚 赵璐 |
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| 作者单位： | 1. 中国地质大学研究生院,湖北,武汉,430074
2. 中国地质大学环境学院,湖北,武汉,430074 |
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| 摘 要： | 2007年8月5日宜(昌)万(州)铁路野三关隧道发生了重大的岩溶突水事故.在岩溶水文地质调查的基础上,对野三关隧道所处流域两个主要岩溶洼地以NaCl为示踪剂进行了充水水源和充水途径的示踪试验.两次示踪试验结果查明水洞坪岩溶洼地是"8.5"突水事故的主要水源,茅口组灰岩中发育的周家包暗河被F18断裂切割,将暗河水导入隧道形成突水事故.稻子坪的水在隧道突水段西以渗-涌水的形式进入隧道.水洞坪示踪实验得出二叠系栖霞-茅口组岩溶含水层中的地下水流速为50 m/h.稻子坪示踪试验得到茅口组灰岩含水层中的地下水流速为45.5 m/h;大冶组灰岩含水层中的地下水流速为10.8 m/h.本示踪结果为宜万铁路野三关隧道的后期恢复施工和防渗工作提供了依据,并为岩溶地区深埋隧道的设计和施工提供了试验和分析工作的实例参考.
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| 关 键 词： | 突水事故 岩溶水示踪试验 水力联系 野三关隧道 |
| 收稿时间： | 2008/4/21 0:00:00 |
Cause of the "8.5" water burst incident at Yesanguan tunnel along the Yi-Wan railway |
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| WU Li,WAN Jun-wei,CHEN Gang and ZHAO Lu.Cause of the "8.5" water burst incident at Yesanguan tunnel along the Yi-Wan railway[J].Carsologica Sinica,2009,28(2):212-218. |
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| Authors: | WU Li WAN Jun-wei CHEN Gang and ZHAO Lu |
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| Institution: | China University of Geosciences;China University of Geosciences,School of Environmental Studies;China University of Geosciences,School of Environmental Studies;China University of Geosciences |
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| Abstract: | Yesanguan Tunnel in Yichang-Wanzhou railway had a large-scale karst water inrush accident on August 5, 2007. Based on karst hydro geologic investigation, two tracing experiments with industry salt were carried out in the two main karst depressions in the study area. The tracing experiments prove that the Shuidongping karst depression is the main water source of the "5th, August" inrush accident, and the water runs to the tunnel along fault No.18 which cut off the Zhoujiabao underground river developed in the P1m limestone layer. And the experiments also prove that the water coming from Daoziping seeps and pours into the tunnel from the west part of the inrush incident. Besides, the flow speed of the groundwater lies between the two karst stratum P1m and T1d is calculated too. The flow speed of the groundwater in karst stratum P1m is 50 m/h based on the experiment in Shuidongping. The flow speed of the groundwater in karst stratum P1m is 45.5 m/h based on the experiment in Daoziping, and the flow speed of the groundwater is 10.8 m/h in karst stratum T1d. All the above provide scientific basis for the later restoration and reconstruction as well as the anti-infiltration engineer of the Yesanguan tunnel. This paper also gives reference for design and construction of deep buried tunnel in karst area. |
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| Keywords: | inrush accident tracing test of karst water hydraulic relationship Yesanguan tunnel |
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