Công tác thăm dò than bể Đông Bắc – Thực trạng và giải pháp

0 Người đánh giá. Xếp hạng trung bình 0

Tác giả: Xuân Kiên Đỗ, Hoàng Huân Nguyễn, Phương Nguyễn, Phương Đông Nguyễn

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Tạp chí Công nghiệp Mỏ, 2024

Mô tả vật lý:

Bộ sưu tập: Metadata

ID: 460905

Thêm vào giỏ Liên kết toàn văn

Kết quả tổng hợp, phân tích tài liệu thăm dò và khai thác, kết hợp phương pháp mô hình hóa và phương pháp toán xác suất - thống kê rút ra một số kết luận sau: Về lý thuyết, mạng lưới thăm dò đã thực hiện trên nhiều khu mỏ đủ cơ sở tính trữ lượng và đáp ứng yêu cầu cho thiết kế khai thác. Song, thực tế nhiều khối tính trữ lượng ở cấp 111, 121, nhưng khi triển khai Dự án đầu tư khai thác vẫn phải bổ sung thăm dò khá nhiều, ở một số khu mỏ phải bổ sung công tác thăm dò 2 - 3 lần. Nguyên nhân chủ yếu là các báo cáo thăm dò gần đây thường bỏ qua nguyên tắc rất cơ bản trong xác lập cấu trúc địa chất mỏ và đồng danh vỉa than không dựa vào không gian cấu trúc địa chất trong từng khối bậc IV, mà chỉ tập trung trong diện tích thăm dò
do đó, khi tiến hành ghép nối cấu trúc mỏ và các đường lộ vỉa than giữa các khu liền kề thường không khớp và hầu hết không liên hệ được với nhau, điều đó ảnh hưởng không nhỏ đến độ tin cậy của công tác thăm dò, tính trữ lượng và khai thác mỏ. Để nâng cao hiệu quả công tác thăm dò và khai thác than bể Đông Bắc, trước tiên phải đầu tư nghiên cứu phân chia khối địa chất đồng nhất tương đối bậc cao (bậc V, VI)
tiến hành đồng danh lại tập vỉa, vỉa than trong từng khối cấu trúc bậc IV. Xác lập nhóm mỏ và mạng lưới thăm dò phù hợp với tài liệu thực tế và cần phải đánh giá lại độ tin cậy công tác thăm dò và tính trữ lượng cho từng khu mỏ và toàn bể than.The results of comprehensive analysis exploration and exploitation documents, combining modeling methods and methods of calculating manufacturing statistics, help us to conclude the following conclusions: In theory, the exploration network implemented in some areas has enough quality storage facilities and meets the requirements for mining design. However, in reality, many reserves are calculated at levels 111 and 121, but when developing mining investment projects, a lot of mining explorations are required 2 - 3 times. The main reason is that recent exploration reports often ignore the basic principle of establishing the geological structure of the mine and coal seam identification, which is not based on the geological structure space in each level IV block but is concentrated only in the exploration area. Therefore, when connecting mine structures and coal seam outcrop between adjacent areas, they often do not match and are mostly not connected to each other, which significantly affects the reliability of exploration work, calculating reserves, and mining. To improve the efficiency of exploration and exploitation of coal in the Northeast basin, we must first invest in research into the division of relatively homogeneous geological blocks of high level (levels V, VI). Proceed to identify the set of seams and coal seams in each block of the level IV structure. Establish mine groups and exploration networks in accordance with actual documents. There is a need to re-evaluate the reliability of exploration work and calculate reserves for each mine and the entire coal basin.

1. Đọc trực tuyến

1. Đọc trực tuyến

Tạo bộ sưu tập với mã QR