Sử dụng bè cá như kè mỏ hàn đảo chiều dòng chảy để phòng chống xói lở trên hệ thống sông Cửu Long

Abstract

River bank erosion on the Mekong River system is currently a pressing issue in society, causing instability in the welfare of people living along the river, and also a not simple economical and technical problem. The content of the article introduces a new way of using the system of floating fish houses  that are currently being exploited quite a lot in the Mekong River as floating structures (fish cages) to reduce the impact flow to the shore, thereby minimizing river bank erosion. Successfully applying this solution both minimizes landslides, creates jobs and economy for the region, environment-friendly structure and low cost, can use state and social funds together. The calculation results show that the cages can be applied to the river sections to reduce flow rate and direct main flow pattern away from eroded bank. The size of fish boat has to be selected base on experience of fishery and flow reduction ratio (f), however, the flow reduction ratio should not be exceed 0,7 because it cause erosion infront of fish houses area.