Phân tích tiến trình thấm và xói theo thời gian với dòng thấm ngang và đứng

Abstract

Hydraulic structures play an important role in our daily life such as energy supply, water supply, flood control… Underground erosion is one of the main causes of instability. in structures such as dams, dikes or earthen reservoirs. Foster et al. (2000) [1] performed statistics on 11192 large earth dams, out of 128 known earth dams, 46.1% were due to internal erosion, 48.4% were due to overflowing of the dam and 5.5% were due to slippage. The process of underground erosion can be divided into four types: seepage erosion, traction erosion, contact erosion and fine-grained erosion. The process of fine-grained erosion can cause important changes in the hydraulic and mechanical properties of the soil. In fact, the research model needs to be suitable for the structure and flow in the dam body. Therefore, the objective of the study will be to analyze the seepage and intenal erosion process with time of many layers specimens to ensure the safety assessment of hydraulic structures and to match the actual dam and dike structure.