Gently inclined medium-thick-thick large ore body remaining ore stopping method

A technology of gently inclined medium-thick, thick and large ore bodies, which is applied in ground mining, mining equipment, earthwork drilling, etc., can solve the problems of difficult mining and poor safety of mining operations, and achieve the effect of guaranteeing ore recovery rate
CN110952981AActive Publication Date: 2020-04-03NANHUA UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
NANHUA UNIV
Publication Date
2020-04-03

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Abstract

The invention provides a gently inclined medium-thick-thick large ore body remaining ore stopping method which is applicable to stopping of gently inclined medium-thick-thick large ore body remainingore with a high ore grade and a high value. According to the method, firstly, an original room-and-pillar method goaf is filled with a high-intensity cemented filling body; and during filling, a vacant area being 1.5 to 2 m on the top is reserved to be used as a free surface and a compensation space for upper layer ore body stopping. According to the thickness of an upper layer ore body, a shallowhole room-and-pillar method or a point pillar type upward layered filling method is used for stopping the upper layer ore body according to different conditions, and roof-contacted filling is performed; and then, an upward layering drift-and-fill method is used for stopping a lower layer ore body. Compared with the prior art, the gently inclined medium-thick-thick large ore body remaining ore stopping method has the advantages of safe stopping operation, high ore recovery rate, low dilution rate, maneuverability, flexibility and the like.
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Description

technical field

[0001] The invention relates to the field of underground mining, in particular to a method for recovering residual ore from a gently inclined medium-thick and large ore body, which is suitable for recovering residual ore from a gently inclined medium-thick and large ore body with high grade and good value. Background technique

[0002] Gently inclined medium-thick-thick ore bodies are one of the most typical difficult-to-mine ore bodies. Due to the constraints of occurrence conditions, rock drilling, ore extraction, and support, it is difficult to realize safe, efficient, and economical mining of this type of ore body . Before the popularization of filling mining technology, many old mines and small mines in my country often adopted the shallow hole room and pillar method for mining when mining gently inclined medium-thick-thick ore bodies. The method of "extracting the heart" is often used in mining, that is, only the middle position of the ore body is mined...

Claims

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