Gob-side entry retaining gob-side filling supporting method

Abstract

The invention belongs to the technical field of application of mining equipment and mining methods, and particularly relates to a gob-side entry retaining gob-side filling and supporting method. A gob-side entry retaining supporting process is divided into in-gob supporting and gob-side supporting, and the gob-side supporting is a key point and a difficulty point and is a key link for determiningthe gob-side entry retaining success or failure and production efficiency. According to the gob-side entry retaining gob-side filling and supporting method, seven complete set of filling hydraulic supports serve as one set, the problems that traditional gob-side entry retaining gob-side filling processes are complicated in procedure, high in labor intensity of workers, high in log consumption, lowin filling body compactness, large in compression amount, insufficient in horizontal thrust resistance of a single gob-side filling formwork support and intensified in roadway deformation due to secondary rotating sinking of a roof caused by insufficient roof cutting force are solved, and the effective protection time of filling bodies is greatly prolonged, so that the increase of the strength ofthe filling bodies and the control over bulging deformation of the filling bodies during the initial setting period are facilitated.

Description

Technical field [0001] The invention belongs to the technical field of application of mining equipment and mining methods, in particular to a method for filling and supporting the side of the roadway along the goaf. Background technique [0002] Adopt certain technical means to re-support the lanes in the previous section and reserve them for use in the next section. This way of retaining lanes is to keep the lanes along the edges of the goaf in the original lanes. Keeping lanes along the goaf can reduce the amount of roadway excavation works, maximize the recovery of resources, ease the relationship between mining and excavation and extend the life of the mine. The support method in the roadway usually adopts the reinforced support technology of bolt-net-cable support, advanced support bracket or single hydraulic prop, which is simple, mature and efficient. Because the roadside support is close to the goaf, the construction is difficult and the effect is average. There are mai...

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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