| Wenzukou reservoir is located in the south of Pingan county of Qinghai province Sanhetownship HuangShui River’s secondary branch within the territory of Tianchong river,belongs to the type IV and other small (I) project, dam foundation rock mass is mainlycomposed of metamorphic sandstone. According to the engineering geological investigation,the main engineering geological problems of dam site for the coverage layer in damfoundation rock permeability and strong weathering layer is stronger, dam foundation andleakage around the dam is larger, dangerous dam foundation seepage stability problem. Damfoundation engineering geological conditions, through the analysis and evaluation based onthe monolayer permeability dam foundation seepage calculation formulas for calculating theleakage quantity, determine the boundaries of the permeable rate is less than5lu, namely thelower limit of seepage prevention, and according to related regulations determine the dambedrock anti-seepage scheme for curtain grouting, put forward distributed distance of2meters,grouting curtain depth into relatively impermeable layer5~10meters. By means of seepageprevention of dam foundation seepage calculation, meet the requirements of seepage control. |
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