Hadashan Project Earth Dam Sand Soil Vibroflotation Infilling Test Detection and Analysis
Yang Wei · Resources Environment & Engineering · 2009
Hadashan hydro-junction project locates in the downstream reach of second Songhua River,60 km from the junction of second Songhua River and Neng River,and the full length of the water retaining earth dam crest is 1 930.40 m.The peak ground shaking of the junction project area is 0.2 g,relevant seismic basic intensity is eight degree,and seismic fortification intensity of the earth dam is eight degree.In view of the sand foundation of water retaining earth dam section has a problem seismic liquefaction under water retention condition,so the sand under water retention condition foundation needs anti-liquefaction treatment,and a scheme of anti-liquefaction treatment is studied out as vibroflotation pile infilling.In order to choose reasonable parameter of construction technique,we choose representative section as test area for comprehensive analysis and rational evaluation.