973 Filling Method Based on Near Horizontal Roadway

Abstract

The invention relates to a 973 filling method based on a near-horizontal roadway, which includes: dividing the working face into several branch roadways and sequentially mining and filling; determining the consumption of gangue and slurry; transporting the gangue and slurry to a gangue mixing device ; When the distribution density of the gangue meets the standard, the gangue mixing device will transport the material to the gangue throwing device, and the gangue throwing device will fill the roadway with materials; use high-concentration cement slurry to fill the non-connecting space in the upper triangle. The invention enables the central control processor to detect the liquid level of the material in real time through the first visual collector when the gangue mixing device mixes the gangue and the slurry, so as to make a preliminary judgment on the actual distribution density of the gangue in the slurry, and adjust the gangue according to the judgment result. The mixing speed of the mixing device and the real-time adjustment of the conveying volume of the gangue when it is judged that the amount of gangue does not meet the standard, so that the gangue and the slurry are fully mixed and the amount of gangue in the material meets the standard, which can effectively improve the strength of the backfill in the roadway after filling, and effectively The filling efficiency of the method of the present invention for the roadway is improved.

Description

technical field [0001] The invention relates to the technical field of roadway filling, in particular to a 973 filling method based on a near-horizontal roadway. Background technique [0002] The current filling methods for roadways include continuous mining and continuous filling methods and paste-like pumping filling methods. Among them, the continuous mining and continuous filling method is that the gangue and the cement slurry are transported separately, the gangue is transported to the upper mouth of the branch road to be filled by a belt conveyor, and the slurry is transported through the slurry pipeline to the branch to be filled using the height difference between the upper and lower wells as power. At the top of the roadway, the gangue and slurry are naturally mixed at the top of the backfill branch roadway, and the inclination angle of the coal seam is used to form a "debris flow"-like self-flow filling, and the solid roof is connected from the bottom to the top to...

AI Technical Summary

Problems solved by technology

[0005] For this reason, the present invention provides a 973 filling method based on a near-horizontal roadway. The proportion of filling gangue is up to 90%, the cement content is less than 7%, and the filling method is 300 tons of gangue per hour. This method greatly improves the filling capacity. The proportion of medium gangue reduces the amount of cement used, and the filling strength is high, which solves the problem of difficulty in connecting the upper and upper triangles of near-horizontal filling. It has a green filling method with less investment, low filling cost, large consumption of gangue, and liberation of overburden resources. It is used to overcome the problem of low filling efficiency caused by the inability to accurately control the ratio of gangue and slurry in the prior art

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