Open pit and underground space-time synchronous mining method for multiple-ore body

A mining method and open-pit mining technology, applied in the directions of underground mining, surface mining, mining equipment, etc., can solve the problems of small production scale, lack of pertinence and adaptability, and large environmental damage, so as to solve the problem of tailing waste storage. The effect of soil and polluted environment, controlling the range of rock movement, and ensuring the thickness of the overburden

CN103590830AActive Publication Date: 2014-02-19SINOSTEEL MAANSHAN INST OF MINING RES
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2014-02-19

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Abstract

The invention discloses an open pit and underground space-time synchronous mining method for a multiple-ore body. According to the technical scheme, the method comprises the following steps: marking the demarcation line of the ore bodies at the shallow and deep positions so as to divide the multiple-ore body into a shallow-position ore body and a deep-position ore body according to an economical and reasonable stripping ratio; delineating the demarcation line of an open-pit mining protection zone according to a moveable angle (7) determined by underground mining by taking the largest demarcation ring of the open-pit mining as a protection line, wherein the deep-position ore body in the protection zone is a filling-process mining zone section (9) and the deep-position ore body outside the protection zone is a caving-process mining zone section (10); filling the waste stone stripped in open pit back to a waste stone back filled region (14) in a rubber belt conveying manner and carrying out cemented filling on the dead zone of the filling-process mining zone section (9) with tailings so as to form a tailings cemented filling region (11). According to the method, the technological characteristics of different mining manners such as open-pit mining, filling-process milling and caving-process mining are organically combined, so that the open-pit, underground space-time synchronous, environment-friendly and efficient mining of the multiple-ore body can be realized.
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Description

technical field

[0001] The invention relates to a mining technology, in particular to an open-pit and underground synchronous mining method with multiple ore bodies, which can be widely used in large-scale open-pit and underground mines with scattered and complex multiple ore bodies. Background technique

[0002] More than 80% of the ore bodies in my country's metal mines are scattered and complex, and the mining scale is small, which cannot meet the needs of the national economy for mineral resources. It is urgent and critical to adopt multi-section simultaneous mining, multiple mining methods, and open-pit underground space-time synchronous mining technologies.

[0003] There are three mining methods for existing deposits: (1) open-pit mining alone; (2) underground mining alone; (3) combined open-pit and underground mining.

[0004] However, the above three mining methods obviously lack pertinence and adaptability to the large-scale mining of scattered and complex multi-or...

Examples

Embodiment Construction

[0033] The following is a further detailed description of the multi-ore body open-pit underground space-time synchronous mining method of the present invention in conjunction with the accompanying drawings and embodiments.

[0034] In this embodiment, the multi-ore body open-pit underground space-time synchronous mining method was carried out on-site industrial test in Dahongshan Iron Mine of Kunming Iron and Steel Co., Ltd. Depend on figure 1 The shown schematic diagram of the method of the present invention dividing the deep ore body and the shallow ore body can be seen, the multi-ore body open-pit underground space-time synchronous mining method of the present invention, at first delimits the shallow and deep ore body divisions according to the economical rational stripping ratio Boundary line 4, the multiple ore body 1 is divided into shallow ore body 5 and deep ore body 6 by the boundary line 4 between shallow and deep ore bodies. The end of the borderline 3.

[0035] D...