A kind of open-pit mine foundation pit mining method
A mining method and ore-based technology, applied in surface mining, earth square drilling, underground mining, etc., can solve the problems of high investment in infrastructure and high production stripping ratio
Active Publication Date: 2017-09-01
CINF ENG CO LTD
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Problems solved by technology
[0003] In order to solve the problems of large production stripping ratio and high infrastructure investment caused by the traditional foundation pit layout, the present invention proposes a method for open-pit foundation pit mining that is relatively independent of mining and stripping operations, reduces infrastructure investment, and balances the production stripping ratio
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[0021] Firstly, the description method used in the present invention is explained. In the present invention, each strip (region) is counted sequentially from the inside to the outside, respectively 1, 2...n... (label 1 represents the foundation pit), and the rear (lower) strip is relative to the front (upper) strip , the serial numbers of the two can be counted as n+1 and n respectively. If a part of a band (area) is located outside a part of another band (area) (such as the intersection of the left and right sides of the labels 3 and 2), the number of the band (area) is higher than that of the other band (area). The number is large. The boundary of a defined strip (area) is the boundary of the strip (area).
[0022] Such as Figure 1-7 Shown is an open-pit mine foundation pit circular strip type (area) mining method according to a specific embodiment of the present invention. The foundation pit layout is adopted for the foundation construction within the stope boundary, a...
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The invention relates to a strip mine foundation pit production method. A stope is divided into a plurality of production areas distributed spirally from the center of the stope to the outer side, the boundary of each area except a foundation pit is composed of an outer side boundary body and an inner side boundary body, and the inner side boundary body of each back area and the outer side boundary body of the corresponding front area are partially overlapped; production is conducted on all the areas spirally from inside to outside, after the striping work in a certain area is completed, the corresponding boundary overlapping part is turned into the next adjacent area to conduct stripping work, and at the moment, production work is conducted in a certain area, and work is conducted in two and only the two areas in the stope. Production work and stripping work are independent, capital construction investment is reduced, and the stripping to production rate during production is balanced.
Description
technical field [0001] The invention belongs to the technical field of mining, and in particular relates to a mining method using foundation pit arrangement for infrastructure construction of an open-pit mine. Background technique [0002] When using the conventional foundation pit mining method in an open-pit mine, trenches are usually dug along the floor or roof of the ore body. After the bottom of the trench meets the equipment operation requirements, four working sides are formed and expanded from the center of the stope to the outside, and the minimum working level is maintained between each horizontal platform. The disc width and the minimum non-working flat disc width meet the equipment operation requirements. When exposing the ore body of the same area, more waste rock needs to be stripped, the amount of infrastructure construction is large, and the production stripping ratio is large; The four working faces are advancing at the same time, and the amount of equipment...
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IPC IPC(8): E21C41/26
CPCE21C41/26
Inventor 苗明义廖江南昌珺
Owner CINF ENG CO LTD