Stepped non-pillar continuous filling mining method for deep well super high large breaking ore body panel

Abstract

The invention discloses a stepped on-pillar continuous filling mining method for deep well super high large breaking ore body panel. An ore body is divided into a front part and a rear part in a super high large breaking ore body center by an transportation roadway, then the front part and the rear part are respectively divided into a plurality of panels, no pillar exists between pillars, each panel is partitioned into a primary extracting drift and a second extracting drift, the panels in the front part are extracted at first and then the panels in the rear part are extracted, the front and rear panels are extracted in a stepped manner, each production technology is carried out in the same level, and procedures can not influence each other; after the stop back production is finished, the primary extracting drift is filled with cement and the secondary extracting drift is filled by classifying tailings while roof-contacted filling is ensured; and the primary extraction drift and the secondary extraction drift adopt high strength filling topping, and binding materials are added in the filling tailings so as to improve the compression strength of a topping layer. The invention has the characteristics of high extraction safety, small loss and dilution, high mechanical degree, large stope amount, large back production strength, high production capability, short back production time and the like.

Description

technical field [0001] The invention relates to a filling mining method, in particular to a step-type continuous filling mining method with an extra-thick and large-broken ore body panel in a deep well. Mechanized mining of metal deposits with short body length, large production capacity, high mining efficiency, and low dilution loss rate. technical background [0002] The filling mining method has a high ore recovery rate and a small exposed area of ​​the roof. It is especially suitable for the mining of unstable and complex ore bodies and has become the preferred mining method for thick and broken ore bodies. With the continuous progress and development of science and technology, the filling mining method has realized the mechanized mining and filling of the stope. The original weakness of low production, low efficiency and high labor intensity has gradually evolved into a modern mining method with high production, high efficiency and low labor intensity. At present, the ...

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Problems solved by technology

[0003] Deep wells with extra thick and broken ore bodies mainly have problems such as deep burial of rock mass, high stress, broken ore rock, small allowable exposure area of ​​stope, poor operation safety, low mining intensity per unit area, and unable to increase production capacity. The conventional upward approach filling method has shortcomings such as mutual interference in production, difficult ventilation, low labor efficiency, small production capacity, and poor safety. Therefore, it is necessary to reform and technologically innovate the traditional upward approach method, and creatively propose The continuous filling mining method of step-type seamless columns in deep wells with extra-thick and large broken ore bodies can achieve efficient and economical mining of broken, thick and large ore bodies under the premise of safety

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