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The application of high density electrical resistivity method to the investigation of the distribution of slag accumulation in hydropower station |
Yi-Huang XU1, Zhen-Ping HUANG2,3( ), Zhi-Wei CHENG2,3, Shao-Bo CHEN4, Zhan-Ming CHEN1 |
1. Fujian Xianyou Pumped Storage Power Co., Ltd., Putian 351267, China 2. College of Environment and Resources, Fuzhou University, Fuzhou 350116, China 3. Fujian Provincial Universities Engineering Research Center of Geological Engineering, Fuzhou 350116, China 4. Fuzhou Branch of East China Engineering Co., Ltd., Fuzhou 350000, China |
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Abstract In the construction of large-scale hydropower stations, a large amount of waste slag is produced and is often deposited in the nearby site, thus forming a large scale waste accumulation body. Under the condition that the thickness and trend of the slag accumulation body are not ascertained, the excessive heap load will easily cause the collapse accident, so it is very important to investigate the distribution of the slag accumulation body. In this paper, the high density resistivity method was used as the main method, and the high density resistivity method was used to verify the abnormal area and key position of the electrical method. At the same time, drilling holes were arranged at the site for comparative analysis. The results show that the high density electrical processing results are in good agreement with the results of transient Rayleigh surface wave method and borehole data. Through this investigation, the authors basically detected the distribution of abandoned slag deposits. High density electrical method and transient Rayleigh surface wave method are effective methods for investigating slag deposits.
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Received: 27 July 2019
Published: 22 April 2020
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Corresponding Authors:
Zhen-Ping HUANG
E-mail: zhphuang@126.com
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Terrain and survey line layout
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Inversion resistivity profile of 3 survey lines
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Schematic diagram of surface wave measuring line and drilling arrangement
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面波 测线 | 所属电 法测线 | 电极区间 (始-终) | 测线长 /m | 道间距 /m | 偏移距 /m | 面波点 /个 | 1-1' | 测线2 | 33~30 | 23 | 1 | 8 | 3 | 2-2' | 测线2 | 26~23 | 23 | 1 | 10 | 3 | 3-3' | 测线2 | 21~15 | 46 | 2 | 10 | 5 | 4-4' | 测线3 | 4~10 | 46 | 2 | 10 | 5 | 5-5' | 测线3 | 23~26 | 23 | 1 | 8 | 3 |
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Layout parameter table of surface wave observation system
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The surface wave point frequency scatter diagram
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Comparison of borehole data and geophysical data at ZK1
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Comparison of borehole data and geophysical data at ZK2
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Comparison of borehole data and geophysical data at ZK3
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Profile distribution map of abandoned slag accumulation body in survey line 1
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