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| APPLICATION STUDY OF LOCATION DETECTION OF LEAKAGE PASSAGES IN DAM BY SLUG TEST |
| CHEN Jiansheng1，2，GAO Bin1，LI Tao3，HE Wenzheng1 |
| (1. Institute of Geotechnical Engineering，Hohai University，Nanjing，Jiangsu 210098，China；2. School of Earth Sciences and Engineering，Hohai University，Nanjing，Jiangsu 210098，China；3. Shenzhen Water Resources Planning and Design Institute，Shenzhen，Guangdong 518001，China) |
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Abstract It is the first time to detect the leakage channel of the dam by slug test；for that the slug test is used to get the permeability coefficient of a point. Based on the Ling?ao Reservoir project，the leakage channel of the dam is detected at the zone pile No. 0+250–295 after a series of slug tests. Using the method of temperature tracer method and detecting of electrical conductivity，it is found that the result is basically the same with the result gotten by slug test. After grouting to the zone of pile No. 0+275–295，there is an obvious effect through the reservoir water level and the flow rate of dam weir. So it demonstrates the correctness of the measuring result of slug test. There is great practical significance and broad application prospects for the application of slug test to detect the leakage passages and overhaul reinforcement of earth-rock dam and riverbank.
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Received: 10 October 2012
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2013, Vol. 32 
