A method of filling and supporting beside gob-side entry retaining

Abstract

The invention belongs to the technical field of the application of mining equipment and mining methods, and in particular relates to a filling and support method for gob-side entry retention. The support technology of gob-side entry retaining is divided into roadside support and roadside support. The roadside support is the key and difficult point, and is the key link to determine the success or failure of gob-side entry retention and production efficiency. The present invention is a complete set of 7 frames and 1 group of filling hydraulic supports. It not only avoids the traditional filling process of gob-side entry retaining, "complex procedures, high labor intensity of workers", "large consumption of round wood", "low density of filling body, large compression volume", "single-frame alleyside filling formwork support Insufficient horizontal thrust resistance, insufficient top cutting force leads to secondary rotation of the roof and aggravates roadway deformation, etc., and greatly increases the effective protection time of the filling body, which is conducive to the growth of the filling body strength and the control of filling during the initial setting period. The bulging of the body is deformed.

Description

technical field [0001] The invention belongs to the technical field of the application of mining equipment and mining methods, and in particular relates to a filling and support method for gob-side entry retention. Background technique [0002] Using certain technical means to reserve the re-support along the trench in the previous section for the use of the next section, this method of retaining the entry along the edge of the goaf at the original position along the trench is called gob entry retention. Gobside retaining can reduce the amount of roadway excavation, maximize the recovery of resources, ease the relationship between mining and prolong the life of the mine. The roadway support method usually adopts anchor net cable support, advance support support or single hydraulic support reinforcement support technology, which is simple, mature and efficient. Because the roadside support is close to the goaf, the construction is difficult and the effect is mediocre. There...

AI Technical Summary

Problems solved by technology

[0003] (1) Stacking gangue bags: the degree of mechanization is low, the labor intensity of workers is high, and the density of the stacking wall is low, the strength is insufficient, and the compression is large. Meet the requirements for secondary use;

[0004] (2) Round logs + single hydraulic props combined with filling the wall: the consumption of round logs is large, which is not conducive to the protection of the ecological environment, and the support process is cumbersome. Also, workers need to erect single props and round log support adjacent to the goaf , the labor intensity of workers is high and there are certain safety hazards;

[0005] (3) Hydraulic supports such as filling formwork supports beside the single-frame roadway, the horizontal stability of the single-frame support is poor, and the insufficient jacking force leads to the secondary rotation and subsidence of the roof, which seriously aggravates the deformation of the roadway, and the relationship between filling and mining is uncoordinated and mismatched, seriously Affect the normal production of the mine

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