| 毛坝向斜核部岩溶水绕轴径流的同位素示踪分析 |
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| 引用本文： | 高志友,尹观,蒋良文,侯明.毛坝向斜核部岩溶水绕轴径流的同位素示踪分析[J].地球学报,2004,25(2):165-169. |
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| 作者姓名： | 高志友 尹观 蒋良文 侯明 |
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| 作者单位： | 成都理工大学，四川成都，610059;成都理工大学，四川成都，610059;铁道部第二勘测设计院，四川成都，610031;桂林工学院，广西桂林，541004 |
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| 基金项目： | 铁道部“渝怀线圆梁山深埋特长隧道工程地质勘测” |
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| 摘 要： | 本文针对圆梁山隧道毛坝向斜段岩溶地下水问题，利用环境同位素及地下水氘过量参数示踪原理，探讨了该区深层岩溶水的形成、补给、循环交替等信息。结果表明，向斜核部的深部承压水，同时接受向斜东翼和西翼大气降水的补给。T1d含水层，受垂直入渗的影响较大；P2ω c含水层，受上覆地层水和向斜东翼层间水入渗的影响明显；P1q m含水层与上覆地层含水层不存在直接的水力联系，但受到来自F02断层和不整合面有限渗流的影响。向斜核部水的渗流方向是从两翼指向核部，且流速较慢，不存在绕轴迳流。
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| 关 键 词： | 同位素示踪 岩溶水 绕轴迳流 毛坝向斜 |
Isotopic Tracing Analysis of Round-Axis Flow of Karst Water in Maoba Syncline |
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| GAO Zhi-you,YIN Guan,JIANG Liang-wen and HOU Ming.Isotopic Tracing Analysis of Round-Axis Flow of Karst Water in Maoba Syncline[J].Acta Geoscientia Sinica,2004,25(2):165-169. |
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| Authors: | GAO Zhi-you YIN Guan JIANG Liang-wen and HOU Ming |
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| Abstract: | Aiming at solving the problem of karst groundwater in Maoba syncline of Yuanliangshan Tunnel,this paper deals with the formation,supply and cycling of the water by using the tracing theory of environmental isotope and deuterium excess (d-excess) parameter of groundwater. The result shows that the deep confined karst water is supplied by the water from both the east wing and the west wing of Maoba syncline. The T_1 d aquifer is mainly affected by the vertical seeping,the P_2 w+c aquifer is affected by water from the upper strata and the west wing of the syncline,and the P_1 q + m aquifer is affected by the water from F_ 02 fault and the finite seepage along the unconformable side instead of having direct hydraulic relations with the upper strata. The direction of flowing water in the syncline is from the wings to the core. The velocity of flow is slow,and there exists no round-axis flow. |
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| Keywords: | isotopic tracing karst water round-axis flow Maoba syncline |
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