Unstable Orebody Continuous Mining Method
A mining method and ore body technology, applied in ground mining, mining equipment, underground mining, etc., can solve problems such as large impact, loss, and roof collapse, and achieve the effects of improving efficiency, reducing losses, and improving safety
Active Publication Date: 2021-11-02
CHINA HUAYE GROUP
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Problems solved by technology
First go back to the mining room. After the mining is completed, fill the empty area and connect the roof. After the filling body in the mine room reaches a certain strength, start back to the mining pillar. The process of waiting for the strength of the filling body to increase reduces the mining efficiency to a certain extent.
Moreover, in this case, both sides of the ore pillar are uniform filling bodies. When mining the ore pillar, it is greatly affected by the strength of the filling body. also affected
In addition, the roof connection rate is often not guaranteed when the empty area is filled. After the adjacent access road is mined, the empty roof span is large, and the roof is prone to collapse.
Method used
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[0022] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concept of example embodiments. communicated to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
[0023] Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus repeated descriptions thereof will be omitted. It should be noted that in the present disclosure, the terms "comprising", "configured with", and "disposed at" are used to express an open and inclusive meaning, and...
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The invention discloses a continuous mining method for an unstable ore body, comprising steps: S1, dividing the ore body in the same horizontal layer into several routes, and reserving 1m-2m ore pillars between each route; S2, for a certain The ore body of the first approach is mined, and then a number of pillar groups are set along the length of the approach at 0.2m to 0.5m near the side of the ore pillar in the approach to support the roof of the approach, and then the Carry out backfilling; S3, carry out mining on the adjacent to-be-mined approach of the backfilled approach, and then set several pillar groups along the length of the approach at 0.2m to 0.5m on the side of the ore pillar in the approach, so as to Supporting the roof of the approach, and then backfilling the approach; S4, mining the ore pillar between the approaches described in step S2 and step S3, and backfilling the area where the ore pillar is located after the mining is completed; S5, Steps S2 to S4 are repeated for subsequent routes to be mined until all ore bodies are mined. The method can continuously recover the ore body and simultaneously recover all the ore pillars.
Description
technical field [0001] The present disclosure relates to the technical field of mining, and in particular, relates to a method for continuous mining of unstable ore bodies. Background technique [0002] In the prior art, for ore bodies with unstable roof and surrounding rocks on the upper and lower walls, when the filling mining method is adopted, the upward layered filling mining method or the downward layered filling mining method is mostly used. This mining method generally adopts the interval mining method of mine room and ore pillar. First, go back to the mining room. After the mining is completed, fill the empty space and connect the roof. After the filling body in the mine room reaches a certain strength, start to return to the mining pillar. The process of waiting for the strength of the filling body to increase reduces the mining efficiency to a certain extent. Moreover, in this case, both sides of the ore pillar are uniform filling bodies. When mining the ore pill...
Claims
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IPC IPC(8): E21C41/22E21F15/00
CPCE21C41/22E21F15/00
Inventor 何磊
Owner CHINA HUAYE GROUP