| 大透距电磁波CT法在电站坝基勘查中的应用 |
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| 引用本文： | 罗德建,高文利,郝忠友.大透距电磁波CT法在电站坝基勘查中的应用[J].物探化探计算技术,2007(Z1). |
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| 作者姓名： | 罗德建 高文利 郝忠友 |
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| 作者单位： | 中国地质科学院物化探研究所 中水东北公司工程勘查院 中国地质科学院物化探研究所 河北廊坊 吉林长春 河北廊坊 |
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| 摘 要： | 电磁波CT法在勘查岩溶方面大有可为。在西南某电站坝基勘查中,使用最新型的JW-5Q型大功率电磁波仪器和新版的处理软件,运用跨孔电磁波CT技术,在深180m的岩层中使用高频(30MHz)实现98m的透距,分别在左坝肩和右坝肩中所探查的二对钻孔间,清晰圈出岩溶的发育范围。所提交的资料已得到钻探、声波资料验证,为进一步施工提供了依据。
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| 关 键 词： | 跨孔 电磁波CT法 岩溶 |
AN APPLICATION OF CROSS BOREHOLE EM WAVE TOMOGRAPHY WITH LARGE T-R SPACING TO SITE INVESTIGATION OF DAM FOUNDATION |
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| LUO De-jian,GAO Wen-li,HAO Zhong-you.AN APPLICATION OF CROSS BOREHOLE EM WAVE TOMOGRAPHY WITH LARGE T-R SPACING TO SITE INVESTIGATION OF DAM FOUNDATION[J].Computing Techniques For Geophysical and Geochemical Exploration,2007(Z1). |
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| Authors: | LUO De-jian GAO Wen-li HAO Zhong-you |
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| Institution: | LUO De-jian1,GAO Wen-li1,HAO Zhong-you2 |
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| Abstract: | The cross-borehole EM wave tomography is a powerful tool for Karst investigation. With newly developed JW-5Q high power EM wave system and the new edition of soft ware, a cross borehole EM wave tomographic survey was successfully carried out for the dam foundation investigation of a hydroelectric station in southwest China, with a transmission distance of 98 m at a depth of 300 m at high frequency of 30 MHz. And the zones with Karst well developed were outlined on both the left and right sides of the dam. This result was confirmed by drilling and acoustic wave data. |
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| Keywords: | cross borehole EM wave tomography karst |
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