Separation-wall-free initiative top filling wall type filling mining method

Abstract

The invention discloses a separation-wall-free initiative top filling wall type filling mining method. Panel type division is adopted; in a panel, a cutting roadway is used as a mining starting line to carry out lateral back-stoping; after the back-stoping, a goaf is formed; in a process of filling the goaf, the goaf is divided into a reserved cutting roadway and a filling space by adopting an airbag; a filling bag is laid in the filling space and filling slurry is conveyed by a pipeline and is used for filling; in a filling process, the leveling of the slurry is accelerated through manners of pressurizing, releasing pressure or exciting oscillation by the airbag; after the filling space is fully filled with slurry, the inner part of the airbag is pressurized before the filling slurry is finally set, so that the airbag is expanded and the filling slurry is squeezed, and furthermore, the filling slurry is compacted and initiative complete top filling is realized; in the next cycle of back-stoping, the reserved cutting roadway of the airbag is used as the mining starting line to mine. The initiative top filling of a filling body is realized and the consumption of the materials is less; the used airbag can be repeatedly used and cyclic utilization of resources can be realized. The separation-wall-free initiative top filling wall type filling mining method is applicable to mining of slowly inclined and inclined thin veins or safe, continuous and efficient mining of large and thick ore bodies.

Description

technical field [0001] The invention relates to the technical field of ore mining operations, in particular to a safe continuous mining method for gently inclined, inclined thin vein mining or thick and large ore bodies. Background technique [0002] Gently inclined extremely thin to thin ore bodies are generally mined by wall caving method, comprehensive method, room and pillar method, etc. Among them, the wall caving method has been rarely used in mines due to low efficiency, large wood consumption and poor safety conditions. The comprehensive method and the room-and-pillar method are not conducive to the full utilization of resources because a large number of ore pillars need to be reserved, and the mining conditions of the ore pillars are extremely poor. More and more such ore bodies are recovered by the filling and filling mining method. [0003] The wall-fill mining method has large production capacity, easy control of the mining width, and low cost. It is a better s...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a filling mining method without a separation wall that is actively connected to the top wall to solve the existing mining method for gently inclined extremely thin to thin ore bodies. It is necessary to build a continuous filling separation wall, and the construction of the continuous wall is all in the empty area. Internally, the longer the construction time of the diaphragm wall, the worse the safety; the construction process of the diaphragm wall is complex and the construction period is long; the filling is difficult to connect to the top, and it cannot be actively connected to the top, and the active bearing role of the filling body cannot be exerted, resulting in subsequent mining. increase, causing damage to the ore body and roof, and affecting technical issues in mining safety and resource recovery

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