| 确定大巴山隧道地下水年龄的逆统计模型 |
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| 引用本文： | 刘丹,贺鹏旭,李启彬.确定大巴山隧道地下水年龄的逆统计模型[J].铁道工程学报,2003(4):97-101. |
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| 作者姓名： | 刘丹 贺鹏旭 李启彬 |
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| 作者单位： | 1. 西南交通大学环境科学与工程学院,成都,610031
2. 铁道第一勘察设计院,兰州,730000 |
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| 摘 要： | 本文论述了地下水年龄计算的逆统计模型 (ISM)的原理与方法 ,并将该模型用于大巴山隧道地下水年龄估算。计算显示隧址区地下水平均年龄介于 4 5～ 75年之间 ,南坡 (5 5～ 75年 )高于北坡 (4 5～ 6 0年 )说明后者的水力传导性优于前者。该模型既考虑了基岩裂隙介质中地下水流普遍存在的水动力弥散作用的影响 ,又能使地下水年龄计算较之传统的同位素数学物理模型更为简便 ,具有实用价值。
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| 关 键 词： | 大巴山隧道 地下水年龄 逆统计模型 |
| 文章编号： | 1006-2106(2003)04-0097-05 |
AN INVERSE STATISTICAL MODEL FOR GROUNDWATER AGE IN DABASGAN TUNNEL AREA |
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| LIU Dan ,HE Peng-xu ,LI Qi-bin School of Envi.Sci. and Eng.,Southwest Jiaotong University, No. Surevy and Design Institute of Railways.AN INVERSE STATISTICAL MODEL FOR GROUNDWATER AGE IN DABASGAN TUNNEL AREA[J].Journal of Railway Engineering Society,2003(4):97-101. |
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| Authors: | LIU Dan HE Peng-xu LI Qi-bin School of EnviSci and Eng Southwest Jiaotong University No Surevy and Design Institute of Railways |
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| Institution: | LIU Dan 1,HE Peng-xu 2,LI Qi-bin 1 1 School of Envi.Sci. and Eng.,Southwest Jiaotong University, 2 No.1 Surevy and Design Institute of Railways |
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| Abstract: | The paper deals with the principle and method of an Inverse Statistical Model(ISM) for groundwater age,which is used to estimate at groundwater age in Dabashan Tunnel area.The calculation shows that the mean age in the area varies from 45 to 75 year,the longer in the south slope than the north slope,indicating the hydraulic conductivity of the latter over the former on average.The ISM not only involves hydrodynamic dispersion of groundwater occurred commonly in fractured bedrock medium,but also makes the calculation of groundwater age simple compared with the traditional isotope mathematic model,so that it is of practice value. |
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| Keywords: | dabashan tunnel groundwater age inverse statistical model |
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