Nội dung được dịch bởi AI, chỉ mang tính chất tham khảo
Sử dụng công nghệ không gian địa lý để đánh giá nguy cơ địa kỹ thuật cho phát triển đô thị bền vững của thành phố Buraydah, Vương quốc Ả Rập Saudi
Tóm tắt
Bài báo hiện tại thảo luận về các tính chất địa kỹ thuật tích hợp của nền móng tại thành phố Buraydah nhằm xác định tính phù hợp của chúng cho các dự án phát triển, xác định các vấn đề kỹ thuật ảnh hưởng đến nền móng do hành vi địa kỹ thuật của khu vực được nghiên cứu và đề xuất giải pháp phù hợp. Hơn nữa, việc ổn định cồn cát bằng bột lá cọ (PLP) là thích hợp cho các dự án phát triển. Các thử nghiệm cơ bản tại phòng thí nghiệm như kích thước hạt, giới hạn Atterberg, thử nghiệm trương nở tự do, phân tích hóa học, thử nghiệm cắt trực tiếp và sức chịu tải nén không giới hạn (UCS) đã được thực hiện trên ba mươi chín lỗ khoan (189 mẫu). Phân tích nhiễu xạ tia X (XRD) và phân tích vi mô cũng đã được tiến hành. Giá trị sức chịu tải đất tối đa (Qu) của các mẫu được kiểm tra dao động từ 888 đến 1412 kN/m2, và lún đàn hồi dao động từ 5.40 đến 7.96 cm. Kết quả điều tra về đất mịn ở mức nền cho thấy giá trị giới hạn lỏng (LL) dao động từ 25.3 đến 54.0%, giới hạn dẻo (PL) dao động từ 19.2 đến 28.0%, chỉ số dẻo (PI) dao động từ 4.4 đến 26.0%, và sự nở tự do dao động từ 35.0 đến 58.0%. Ngoài ra, các tính chất địa kỹ thuật của đất và đá đã được tích hợp với Hệ thống Thông tin Địa lý (GIS) để sản xuất mô hình địa kỹ thuật. Mô hình này được sử dụng để nhận diện phân bố địa không gian và phân loại nguy cơ địa kỹ thuật ở thành phố Buraydah. Mô hình sản xuất cho thấy khu vực nguy cơ địa kỹ thuật được quan sát gần đường King Abdulaziz về phía nam của khu vực nghiên cứu. Việc thêm bột lá cọ tạo ra các tính chất địa kỹ thuật mong muốn trong đất của các cồn cát.
Từ khóa
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