| 胶结充填体裂缝探地雷达探测与识别研究 |
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| 引用本文： | 赵奎,高忠,何文,王明,胡源.胶结充填体裂缝探地雷达探测与识别研究[J].金属矿山,2014,43(4):17-21. |
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| 作者姓名： | 赵奎 高忠 何文 王明 胡源 |
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| 作者单位： | 1.江西理工大学工程研究院，江西 赣州 341000；2.钨资源高效开发及应用技术教育部工程研究中心，江西 赣州 341000；3.江西理工大学资源与环境工程学院，江西 赣州 341000 |
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| 基金项目： | * 江西省科技支撑项目（编号：20121122040027）；江西省高校科技落地计划项目（编号：KJLD12027），江西省教育厅项目（编号：GJJ09250），江西省研究生创新专项资金教育厅项目（编号：YC2012-S096），江西理工大学校级科研课题（编号：jx xj12120）。 |
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| 摘 要： | 裂缝是影响胶结充填体顶板稳定性的重要因素之一，确定裂缝深度是进行胶结充填体顶板稳定性分析的前提条件。为此，进行了探地雷达探测胶结充填体顶板裂缝的研究。首先测定了胶结充填体的相对介电常数，讨论了探地雷达探测胶结充填体裂缝的可行性；其次基于异常点的雷达电磁波散射和波的叠加原理，得出了垂直裂缝雷达波响应特征为裂缝顶、底端对应的双曲线波组，并在正演模拟得到了验证；最后对某铜矿胶结充填体顶板裂缝进行探测，探测结果为一簇双曲线波组。研究表明：探地雷达可用于探测胶结充填体裂缝。
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| 关 键 词： | 胶结充填体 探地雷达 裂缝 正演模拟 现场试验 |
Research on Detection and Identification of Cracks in Cemented Backfill with Ground Penetrating Radar |
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| Zhao Kui,Gao Zhong,He Wen,Wang Ming,Hu Yuan.Research on Detection and Identification of Cracks in Cemented Backfill with Ground Penetrating Radar[J].Metal Mine,2014,43(4):17-21. |
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| Authors: | Zhao Kui Gao Zhong He Wen Wang Ming Hu Yuan |
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| Affiliation: | 1.Engineering Institute，Jiangxi University of Science and Technology，Ganzhou，341000，China；2.Engineering Research Center of High-efficiency Development and Application Technology of Tungsten Resources，Ministry of Education，Ganzhou，341000，China；3.Faculty of Resources & Environmental Engineering，Jiangxi University of Science and Technology，Ganzhou，341000，China |
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| Abstract: | The existence of cracks in cemented backfill roof is one of the main factors which influence the stability of roof.The determination of crack′s depth provides a precondition for the roof stability analysis.So ground penetration radar(GPR) technique is proposed to detect and indentify the cracks in cemented backfill.Firstly，the relative dielectric constant of cemented backfill was measured and the feasibility of crack detection using GPR was discussed.Then，based on the principle of radar and electromagnetic wave scattering and wave superposition at anomalies，it is obtained that the response characteristics of the radar wave is a hyperbolic wave group from the top to the end of vertical cracks，which was verified by the forward modeling.Lastly，detection on the roof cracks of cemented backfill for a copper mine was made，and the findings displayed as a hyperbolic wave group.The studies indicated that ground penetrating radar can be used to detect cracks in cemented backfill. |
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| Keywords: | Cemented backfill Ground penetrating radar(GPR) Crack Forward modeling Field test |
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