Mining environment reconstructed continuous mining afterwards filling mining method

Abstract

The invention discloses a method of continuous mining followed by filling with mining environment reconstruction. The method comprises mining strip ore section in the middle part of the ore body, mining ore section with proper width extending towards two sides of the site that is perpendicular to and has proper distance far away the strip ore section followed by cementation filling to the mined-out area to form a continuous crisscross cementation filling top plate support frame structure. The frame structure meanwhile separates the ore body into several spaced and independent ore sections to reconstruct a new mining environment in the ore body. In such environment, performing spacedly or parallelly second mining with independent ore sections as second mining units followed by non-cementation filling to the mined-out area to realize continuous mining in the overall ore body, performing ore breaking in lateral direction with downward parallel and vertical deep holes, loading ore with double-trench or single-trench as bottom structure along ore blocks direction, landing down to the main gangway in the next stage through stage drop shaft, and transporting out of the mine by downhole locomotive. The invention has the advantages of safe and reliable mining environment, remarkably improved ore recovery rate and productivity, effectively controlled loss, and remarkably reduced production cost.

Description

technical field [0001] The invention relates to a mining method, in particular to a thick and slow mining method suitable for uneven roof and ore stability and poor safe mining environment, which is suitable for ore bodies with large continuous fluctuations in direction and inclination, and large grade changes. Mining methods for efficient and safe mining of inclined metal deposits. Background technique [0002] The mining of thick and gently inclined metal ore bodies by traditional conventional methods such as room-and-pillar method, comprehensive method, and chassis funnel segmented mining method occupies a large proportion in my country, but the effect is generally not good. Especially when mining a gently inclined ore body with uneven thickness and unstable roof rock, there are more problems, and it is impossible to realize safe, efficient, continuous and low-cost mining of this type of ore body. For a long time, many domestic mines can only adopt the chassis funnel roo...

AI Technical Summary

Problems solved by technology

[0002] The mining of thick and gently inclined metal ore bodies by traditional conventional methods such as room-and-pillar method, comprehensive method, and chassis funnel segmented mining method occupies a large proportion in my country, but the effect is generally not good.

Especially when mining a gently inclined ore body with uneven thickness and unstable roof rock, there are more problems, and it is impossible to realize safe, efficient, continuous and low-cost mining of this type of ore body

For a long time, many domestic mines can only adopt the chassis funnel room-pillar method or the chassis funnel segmented mine room method with high safety, but there is a large amount of mining and cutting in the chassis rock, high dry ton cutting ratio, and high mining costs , the lack of long production cycle of ore block or stope

There are also many mines that use the filling method for mining, but the various filling methods currently used at home and abroad also have disadvantages such as low production capacity, high mining cost, complex mining technology, large filling system, and difficulty in mastering in small and medium-sized mines.

Although it is not serious for mines with high deposit value or ore grade, the value and grade of most gently inclined medium-thick deposits in my country are not high, and it is difficult to adapt to the filling method.

Although the room-and-pillar method has higher efficiency and lower cost, the resource loss is greater. If the roof is not controlled or the effect of the roof is not good, the safety conditions will deteriorate; the filling method has less loss of ore dilution and is safer, but Filling operations lead to higher costs and lower efficiency

Therefore, there is a contradiction between the unity of opposites among efficiency, cost, safety, and dilution loss in the mining of gently inclined medium-thick ore bodies

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