Đặc điểm phân bố của các thuộc tính thủy lực trên một sườn đồi núi

Springer Science and Business Media LLC - Tập 17 - Trang 339-352 - 2013
Yongseok Gwak1, Sanghyun Kim1
1Department of Environmental Engineering, Pusan National University, Busan, Republic of Korea

Tóm tắt

Hiểu biết về sự khác biệt của quá trình thẩm thấu đã là một vấn đề thách thức trong việc cải thiện kiến thức về thủy văn sườn đồi. Sự phân bố không gian của các thuộc tính thủy lực trên một sườn đồi đã được đo đạc bằng cách sử dụng thiết bị thẩm thấu căng thẳng qua bốn khoảng thời gian khác nhau. Sườn đồi được nghiên cứu có một điểm khởi đầu kênh nước vĩnh viễn nằm trong lưu vực Bongsunsa, đây là nguồn đầu cho lưu vực sông Hàn, Hàn Quốc. Độ dẫn thủy trên bề mặt bị ảnh hưởng bởi cả cấu trúc phát triển lỗ và kết cấu đất. Để khám phá tác động của mối quan hệ giữa các đặc điểm địa hình không gian và các thuộc tính thủy lực bề mặt, một số phân tích địa hình và đánh giá dòng chảy đã được thực hiện. Tầm quan trọng của dòng chảy qua kích thước lỗ lớn hơn đã được xác nhận cả trong quy mô và biến thể của các khía cạnh không gian và theo mùa, tương ứng. Mặc dù có sự khác biệt đáng kể trong các phép đo thực địa ở cả hai bối cảnh không gian và thời gian, ngưỡng để phân loại sự thay đổi không gian của các thuộc tính thủy lực có thể được xác định thông qua một số kiểm định thống kê, sử dụng hai tập hợp dữ liệu rõ ràng được xác định từ phân tích thuộc tính địa hình và các thuộc tính thủy lực. Kết quả cho thấy hành vi ngưỡng dường như bị hạn chế đối với các thuộc tính thủy lực liên quan đến việc tạo ra dòng chảy qua các lỗ lớn.

Từ khóa

#thuộc tính thủy lực #thẩm thấu #sườn đồi #phân tích địa hình #dòng chảy qua lỗ lớn

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