Bước đầu nghiên cứu đặc điểm chất bồi lắng và khả năng giảm sóng bởi hệ thống thu hút cá trên sông

0 Người đánh giá. Xếp hạng trung bình 0

Tác giả: Công Thuận Nguyễn, Hữu Ngạn Trần

Ngôn ngữ: Vie

Ký hiệu phân loại:

Thông tin xuất bản: Khoa học Đất 2023

Mô tả vật lý: 60-64

Bộ sưu tập: Metadata

ID: 408241

Thêm vào giỏ Liên kết toàn văn

Hệ thống thu hút cá trên sông được người dân ở Đồng bằng sông Cửu Long áp dụng với mục đích chù yếu làm nơi cư trú cho động vật thủy sinh và sau đó thu hoạch chúng. Hệ thống này có thế được xem như công trình kè sinh học để bão vệ bờ sông, nhưng chưa được nghiên cứu và đánh giá. Nghiên cứu này được thực hiện nhằm đánh giá khả năng tích tụ chất bồi lẳng va giảm sóng cùa hệ thõng thu hút cá trên sông. Một hệ thồng thu hút cá với lục binh được trồng bên trong được xây dựng. Mức độ tích tụ và đặc điểm chất bồi lắng được xác định. Thêm vào đó, độ cao sóng sông ở bên ngoài và bên trong hệ thống được đo đạc. Kết quả cho thấy, với 30 ngày khảo sát, sự khác biệt về bồi lắng trầm tích giữa bên trong hệ thống và bên ngoài hệ thống là không có ý nghĩa. Tuy nhiên, hệ thống với lục binh có kha năng giảm chiều cao sóng sông 51,6 - 100% ở khoảng cách từ 4m từ khung ngoài cửa hệ thống. Nghiên cứu cho thấy tiềm năng ứng dụng hệ thống thu hút cá để giảm sóng ở bờ sông, kênh, rạch., Tóm tắt tiếng anh, The fish attractors in the rivers have been applied by people in Mekong River Delta with the main purpose of creating a habitat for aquatic animals and then harvesting them. The attractors can be considered as biological embankments to protect the riverbanks that have not been studied and evaluated yet until recently. The study was carried out to evaluate the sedimentation and river wave reduction by the attractors. Aattractor system with water hyacinth planted inside was built. The accumulation and characteristics of sediments were determined. In addition, river wave heights outside and inside the attractor were measured. The results showed that within 30 days-survey, the difference in the sediment accumulation between inside the attractor and outside the attractor was insignificant. The attractor with water hyacinth can reduce by 51.6 - 100% for river wave height at a distance of 4m from the outer of the attractor. The study found the possibility of applying attractors to reduce waves for riverbanks and canals.

1. Đọc trực tuyến

1. Đọc trực tuyến

Tạo bộ sưu tập với mã QR