Xác lập nhóm mỏ và mạng lưới thăm dò quặng urani trong cát kết khu vực Pà Lừa - Pà Rồng, trũng Nông Sơn=Establishing a Mining Group of Deposit and an Exploration Grid Pattern for Uranium Ore Intercalated in Sandstone at Pa Lua

Xác lập nhóm mỏ và mạng lưới thăm dò quặng urani trong cát kết khu vực Pà Lừa - Pà Rồng, trũng Nông Sơn=Establishing a Mining Group of Deposit and an Exploration Grid Pattern for Uranium Ore Intercalated in Sandstone at Pa Lua - Pa Rong Area, Nong Son Basin

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Tác giả: Phương Nguyễn

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Khoa học Trái đất và Môi trường, 2024

Mô tả vật lý: tr.40-51

Bộ sưu tập: Metadata

ID: 474361

Thêm vào giỏ

Bài báo giới thiệu kết quả xác lập nhóm mỏ và mạng lưới thăm dò quặng urani trong cát kết trũng Nông Sơn, tỉnh Quảng Nam trên cơ sở kết quả thăm dò các thân quặng urani khu vực Pà Lừa - Pà Rồng
kết quả như sau: i) Hàm lượng urani trong hầu hết các thân quặng công nghiệp có thể quy nạp về hàm phân bố loga chuẩn. Các thân quặng (02 thân quặng chính là thân quặng TQ1 và TQ2) có hàm lượng trung bình từ 0,032% đến 0,054% U3O8, hệ số biến thiên hàm lượng (Vc) lớn hơn 100% thuộc loại rất không đồng đều
chiều dày trung bình từ 2,30 m đến 2,35 m, hệ số biến thiên chiều dày (Vm) thay đổi từ 89,4% đến 100,3% thuộc loại không ổn định đến rất không ổn định
và ii) Các mỏ urani trong cát kết kiểu Pà Lừa - Pà Rồng, trũng Nông Sơn chủ yếu thuộc nhóm mỏ thăm dò III. Hợp lý nhất là sử dụng mạng lưới dạng tuyến song song và hình rẻ quạt. Để tính trữ lượng trữ lượng yêu cầu khoảng cách giữa các tuyến khoan là 50 - 60 m, các công trình trên tuyến cách nhau 25 - 30 m. Mạng lưới thăm dò này có thể áp dụng cho các mỏ cát kết khác trong trũng Nông Sơn có đặc điểm tương tự mỏ Pà Lừa - Pà Rồng.This research shows the results of establishing a mine group and a uranium ore exploration network in Nong Son depression sandstone, Quang Nam province based on the results of exploration of uranium ore bodies in the Pa Lua - Pa Rong area. Some main findings include: i) The uranium content in most industrial ore bodies can be attributed to a lognormal distribution function. The ore bodies (two main ore bodies are referred to as TQ1 and TQ2) have an average uranium concentration from 0,032% to 0,054% U3O8 with high variations (with the amount of variation in content (Vc) greater than 100%). The average thickness of the ore bodies is from 2,30 meters to 2,35 meters. The thickness variation coefficient (Vm) varies from 89,4% to 100,3%, indicating the unstable to very unstable type of ore body
and ii) Uranium mines in sandstones of the Pa Lua - Pa Rong type, Nong Son basin mainly belong to exploration mine group III. The most reasonable exploration approach is to use a parallel and fan-shaped network. To calculate the reserves, the distance between drilling routes is set at 50 to 60 meters. To determine the road and pavement, wet set the drilling routes to be 25 to 30 meters apart from each other. This exploration network can be applied to other sandstone mines in the Nong Son basin with similar characteristics to the Pa Lua - Pa Rong mine.

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