| 坝基集中渗漏通道的温度场反分析与试验研究 |
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| 引用本文： | 陈亮,吴勇,陈建生.坝基集中渗漏通道的温度场反分析与试验研究[J].华东地质学院学报,2007,30(4):354-357. |
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| 作者姓名： | 陈亮 吴勇 陈建生 |
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| 作者单位： | 河海大学岩土工程研究所 江苏南京210098 |
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| 基金项目： | 国家自然科学基金“裂隙岩体渗流能量传递热源法及示踪理论研究”(50179009) |
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| 摘 要： | 渗漏是严重影响堤坝安全的主要形式,确定渗漏通道的位置是进行堤坝渗漏整治的前提和基础。温度场探测堤坝渗漏的研究是其中一种较便捷的方法,但是在理论上还需要进一步完善。在库水和地下水存在着温度差异的基础上,考虑堤坝发生集中渗漏后,渗漏通道中的地下水与周围土体进行热量交换,造成渗流通道附近地层温度发生改变,建立起温度场对渗漏通道的反演模型。在前人研究的基础上,考虑地温梯度的影响,可以建立有集中渗漏通道影响下的二维热传导方程,进而以现场测井的温度数据作为边界条件,对泛定方程进行求解,最终得到渗漏通道的位置。计算结果和实测结果的对比表明,通过温度场反推渗漏通道参数的方法是可行的。
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| 关 键 词： | 渗漏通道 热源法 地温梯度 测井 |
| 文章编号： | 1000-2251（2007）04-0354-04 |
| 收稿时间： | 2007-05-28 |
| 修稿时间： | 2007年5月28日 |
Study on Temperature Field Inverse Analysis and Experiment of Concentrated Leakage Passage in Dam Base |
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| CHEN Liang,WU Yong,CHEN Jian-sheng.Study on Temperature Field Inverse Analysis and Experiment of Concentrated Leakage Passage in Dam Base[J].Journal of East China Geological Institute,2007,30(4):354-357. |
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| Authors: | CHEN Liang WU Yong CHEN Jian-sheng |
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| Abstract: | Leakage is the main form which influences dyke safety severely,so to determine the position of the leakage passage is the precondition and base of dyke repair.Study on temperature tracing dam leakage is one of the convenient methods,but it needs further consummate on theory.Based on the temperature differences between reservoir water and underground water,after considering the concentrated leakage of the dam,heat exchanges between the underground water in leakage passage and the soil around,and this leads temperature altering in the stratum near leakage passage,and then model for temperature field inverse analysis of leakage passage can be established.Based on the previous work,considering the influence of ground temperature grads,planar heat conduction equation influenced by concentrated leakage passage can be established,boundary condition is based on temperature date of locale logging,solve the differential equation,the position of leakage passage can be derived finally.The contrast between the calculated results and surveyed indicates that determining the parameters of leaking passage by using inverse analysis through temperature field is viable. |
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| Keywords: | leakage passage temperature method ground temperature grads logging |
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