Nghiên cứu sử dụng đất bồi lắng lòng hồ kết hợp xi măng để nâng cấp sửa chữa đập đất hồ chứa nước Lối Đồng tỉnh Hà Tĩnh
Abstract
Loi Dong reservoir is located in Ky Trinh ward, Ky Anh town in the east of Ha Tinh province. The reservoir was built in 1970 with the total catchment area of 1.15 km2, the height of 10m, the length of 825m, and the useful storage of 0.6 mil.m3. After more than 50 years of operation, this earth dam is now seriously damaged, degraded and faced many potentially incidents in the rainy and flood season; thus, it urgently needs to be upgraded and repaired. With the scarcity of earth embankment materials meeting technical requirements in the dam construction area, using alluvial soil in the reservoir bed as a repair material, upgrading the dam will bring great economic as well as social benefits.
The paper presents the results of research on the effects of cement on the mechanical properties of sedimentation soil in the Loi Dong reservoir, thereby proposes the appropriate cement ratio for sediment treatment. The sedimentation soil after being treated with cement is applied to repair and upgrade the earth dam of Loi Dong Reservoir, meeting the requirements of TCVN 8216: 2018.
