Method for determining length of filling segment of fully mechanized mining and filling mixed mining working face

Abstract

Provided is a method for determining length of a filling segment of a fully mechanized mining and filling mixed mining working face. The method comprises: firstly, according to production capacity requirement of a mine, determining total length of a fully mechanized mining and filling mixed mining working face, then, according to a principle that waste rock output of a rock protective layer working face in each day is equal to mass of a filling material which is filled in a goaf of the filling segment of the fully mechanized mining and filling mixed working face, initially determining a length range of the filling segment working face, finally, according to overlying strata fracture development of the fully mechanized mining and filling mixed mining working face on site and stratum moving characteristic requirements, determining the length of the filling segment working face. The determining method is simple and practical, and provides engineering technical guidance for popularization and application of a fully mechanized mining and filling mixed mining technology, and further promotes an integrated green mining circulating mode of mining, selecting, filling, and mining of efficient filling coal mining, in the integrated green mining circulating mode, waste rocks of an underground coal mine do rise, and the waste rocks are selected by washing and are refilled in the goaf. The method expands popularization and application range of the filling coal mining.

Description

Technical field [0001] The invention relates to the technical field of backfill mining, in particular to a method for determining the length of the filling section of a fully mechanized mining-filling mixed mining face. Background technique [0002] In recent years, solid coal mining technology as a green mining technology that liberates the "three lowers" of coal pressure has been promoted and applied in many mining areas in my country, successfully liberating a large amount of coal resources, and at the same time, the underground gangue is not raised in the well, reducing The green concept of gangue stacking and pollution on the ground has been further strengthened. More and more mining areas adopt underground coal washing technology to realize the integration of green recycling mining technology of underground gangue washing and washing and washing of gangue backfilling the goaf. However, with the high-intensity mining of coal resources, many coal mines encounter low-permeabili...

AI Technical Summary

Problems solved by technology

However, with the high-intensity mining of coal resources, many coal mines encounter low-permeability and high-gas outburst dangerous coal seams in the next stage of coal seam extension mining. The mining of such coal seams is safe and dangerous, and the cost of coal seam mining is high, which seriously affects mine services. number of years

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