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| High density resistivity method for detecting grouting reinforcement quality of pipe jacking |
| Yu-Fei GONG1, Tian-Chun YANG1,2, Shao-Yu DONG1, Kai JIANG1 |
1. Resource Environment and Safety Engineering College of Hunan University of Science and Technology, Xiangtan 411201, China
2. Key Laboratory of Geotechnical Eengineering Stability Control and Health Monitoring of Hunan University of Science and Technology, Xiangtan 411201, China |
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Abstract In this paper, the high density resistivity method was applied to measure the compactness of grouting in a water reconstruction project in Xiangtan City, and its effectiveness was studied. The abnormal strata were determined according to data processing and image interpretation, and then in combination with the exploration results, the existence of groundwater-rich areas was detected and verified by excavation. The results show that the high density resistivity method has a very good detection effect in the measurement of pipe jacking compactness, and the low-resistivity anomaly area corresponds to the water-bearing undense area.
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Received: 04 January 2018
Published: 19 December 2018
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| 测线号 | 异常范围 | 备注 | | G01 | ① 剖面27~31 m(深度约7~12 m) | 顶管的水平位置在测线50 m、53.6 m附近 | | ② 剖面39~42 m(深度约9~10 m) | | G02 | ① 剖面44~55 m(深度约8~12 m) | | | ② 剖面60~67 m(深度约6.5~8 m) | | G03 | 44~56 m(深度约3~11 m) | 现场后期对高密度电阻率法测线G03上的异常进行了开挖查证 | | G04 | 48~52 m(深度约12~14 m) |
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