Variation of Groundwater Level along the Section of Sha River to Yellow River of the Middle Route of South-to-North Water Diversion Project
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Abstract:
Groundwater problem is one of the three major technical problems during the construction of the Middle Route of South-to-North Water Diversion Project, and the dynamic variation of groundwater level along the diversion project is of great significance for ensuring the safety of the project. The groundwater levels in 22 monitoring wells along the section of Sha River to Yellow River of the Middle Route of South-to-North Water Diversion Project were measured during the wet and dry seasons from 2010 to 2012, and the long-term monitoring data of 11 national groundwater observation wells within the scope of 40 km along the section were collected. Based on the analysis of the monitoring data, the variation trend of groundwater level was stable in the section of Sha River to Yellow River of the Middle Route. However, due to the complexity of hydrogeological and engineering geological conditions along the section (Expansive soil drainage and wide distribution of perched water), groundwater is still likely to threaten the safety of project under the unfavorable conditions such as heavy rainfall.
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