tailieunhanh - Định hướng phương án khai thác hầm lò cho mỏ quặng phân tán nhỏ lẻ antimol Làng Vài, Tuyên Quang

Bài viết đề xuất phương án tiếp cận thân quặng bằng giếng đứng kết hợp với lò xuyên vỉa, hệ thống khai thác lưu quặng, thi công đường lò chuẩn bị sản xuất đi trong thân quặng, phương pháp thi công sử dụng máy khoan có đường kính 36 mm, phá đá bằng phương phá nổ mìn. Đồng thời tính toán một số chỉ tiêu lò chợ hiệu quả cơ bản theo phương án đã lựa chọn. | 103 Journal of Mining and Earth Sciences Vol. 62 Issue 5a 2021 103 - 111 Orientation underground exploitation method to develop for the Lang Vai of small scale antimol region Tuyen Quang Province Hung Phi Nguyen 1 Tung Manh Bui 1 Hoa Nhu Thi Nguyen 2 1 Faculty of Geoscience and Geoengineering Hanoi University of Mining and Geology Vietnam 2 Faculty of Fundamental Science Quang Ninh University of Industry Vietnam ARTICLE INFO ABSTRACT Article history Vietnam s mineral resources are very rich yet dispersed the majority of Received 4th Aug. 2021 ore mining are on a modest scale. One such mine is the Lang Vai antimony Accepted 16th Nov. 2021 mine in Tuyen Quang province. The mine contains around 55 000 tons of Available online 1st Dec. 2021 main ore reserves with a concentration of percent. The ore body Keywords is spread in the form of beds veins and steep slopes. With these sorts of Lang Vai antimony ore mine mines the issue for mining engineers is balancing technological Shrinkage stoping layout indications mining safety and cheap production costs. If mechanized mining technology is used capital recovery is not possible if manual Small scale technology is used productivity and safety are low and the payback Vertial raise way. period is long. The building solution is simple based on an examination of the features of such a mine which is naturally placed of the ore body the mechanical and physical qualities of the surrounding rock and so on with the objective of the shortest ore production time. simple. The article offers a strategy to approach the ore body through a vertical well combined with a through-seam furnace an ore storage mining system the building of a pipeline to prepare for production in the ore body and a road drill construction technique. Breaking rock with 36 mm glass using a blasting technique. Simultaneously compute some fundamental efficiency requirements based on the chosen plan. Copyright 2021 Hanoi University of Mining and Geology. All