Method for performing coal mining and gangue cementation stripe filling simultaneously

Abstract

The invention discloses a method for performing coal mining and gangue cementation stripe filling simultaneously. When a working surface advances to a certain distance, an excavator and filling equipment are delivered under a filling support for assembly and adjustment; a bottom excavator excavates a bottom while coal mining machine mines coal, underlying strata excavated by the excavator are delivered to a filling bag through a filling system; the underlying strata form a first filling strip of a support goaf top plate after solidifying and sizing; and after filling of the first filling strip, the filling operation of a second filling strip is performed; and the steps are repeated accordingly, and coal mining and filling are performed simultaneously until a coal face is mined. According to the method, the filling mechanical equipment is transferred under a well, so that the ground site arrangement is reduced, gangue of down hole bottom excavating board is fully used, the problem of the filling material source is solved, transport links of filling materials are reduced, the filling system moving with the working surface simultaneously is formed, down hole filling is rapid and effective, and simultaneously, an efficient work flow of coal mining and filling simultaneously can be achieved.

Description

technical field [0001] The invention relates to coal mining, in particular to filling and mining technology. Background technique [0002] The so-called filling mining is a coal mining method that uses filling materials to fill the goaf, support the overlying strata in the stope, reduce the collapse and deformation of the overlying strata, and realize safe coal mining. Filling mining is an important way to realize green mining in coal mines, and it has made outstanding contributions in digesting underground gangue, maintaining the ground environment, and preventing major disasters and accidents in the stope. Fill mining is used in both coal mines and metal mines. There are various filling methods. According to the properties of filling slurry, it can be divided into cemented filling and non-cemented filling. Cemented filling is to use crushed waste gangue as filling material, cement slurry or mortar as cementing medium, and fill the goaf in the form of non-dehydrated paste...

AI Technical Summary

Problems solved by technology

[0004] Establishing a filling workstation underground solves the problem of gangue not going up the well, but the underground gangue generally comes from the excavation roadway and needs to be transported to the filling workstation through multiple transportation links, and the filling pipeline is arranged from the filling workstation to the goaf, so it still brings There are many troubles, and it is impossible to realize the synchronization of filling and working face advancement

At present, this method consumes time and capital costs, and is not conducive to the high production and high efficiency requirements of coal mines.

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