Gob-side entry retaining mining support process method

Abstract

The invention discloses a gob-side entry retaining mining support process method. The method comprises the following steps: I, performing mining entry retaining reinforcement or roadway driving entry retaining reinforcement primary support; II, performing advance support on the end of the entry retaining side of a stoping work face, and adopting beeline-shaped beams and single hydraulic pillars in advance segment support like an advance support method adopted in ordinary stoping, wherein the differences lie in that 1, the advance support length in entry retaining is 5 meters greater than a length required in a specification, namely, the normal mining length is 25 meters while the entry retaining mining length is 30 meters; 2, longitudinal beeline-shaped beams are changed into transverse beeline-shaped beams, namely, the beeline-shaped beams are arranged along the work face instead of a roadway; III, performing double-net support on No. 1 to No. 3 frames on the stoping work face; IV, preserving roadway support; V, forming a natural false edge on the side of an entry retaining stoping side, wherein along with the continuous forward movement of the work face, the direct top in a stoping region collapses, dropping gangues naturally roll onto a diamond mesh behind the No. 1 to No. 3 frames at the end, and rocks covering the mesh drop naturally under the action of deadweights.

Description

technical field [0001] The invention relates to the technical field of coal mining, in particular to a mining support method for gob-side entry retaining. Background technique [0002] For gobside entry retention, currently there are high water and ultra-high water filling, concrete pouring, steel pipe concrete plus single anchor cable, masonry gangue bags, material stones, concrete blocks, metal shed plus monomer, support dense monomer plus Wooden piles and other entry retention techniques, but the above-mentioned entry retention techniques have shortcomings, among them, high water and ultra-high water filling, pouring concrete, steel pipe concrete plus single anchor cable, masonry gangue bag, material stone, concrete block entry retention technology , its disadvantages are: first, the operating environment is operated in the goaf behind the mining face, the operating safety ring is poor, and the safety factor is relatively low; second, it requires a large amount of labor; ...

AI Technical Summary

Problems solved by technology

[0002] For gob-side entry retention, currently there are high water and ultra-high water filling, pouring concrete, steel pipe concrete plus single anchor cable, masonry gangue bag, material stone, concrete block, metal shed plus monomer, support dense monomer plus Wooden stacks and other entry retaining technologies, but the above-mentioned entry retaining technologies have shortcomings. Among them, high water and ultra-high water filling, pouring concrete, steel pipe concrete plus single anchor cable, masonry gangue bags, material stones, and concrete block entry retaining technologies , its disadvantages are: first, the operating environment is operated in the goaf behind the mining face, the operating safety environment is poor, and the safety factor is relatively low; second, it requires a large amount of labor; is relatively high cost

[0003] In addition, high-water and ultra-high-water filling and pouring concrete filling technology have other disadvantages. First, the roof of the filling operation area needs to be supported and reinforced; second, modeling is required; third, filling equipment is required; fourth, Affect the recovery output, the process is complicated

Concrete-filled steel tube + single anchor cable + gangue bag, masonry gangue bag, material stone, and concrete block roadway retaining technology have the following disadvantages: labor-intensive workers and many transportation links

The disadvantages of lane retention technologies such as metal sheds plus monomers, densely supported monomers and wooden stacks are: the amount of monomers and wood used is large, the amount of damage to monomers and sheds is large, the amount of roadway maintenance and repairs in the later period is large, and the recovery of sheds is complex. The utilization rate is low, and plastic treatment is required, and the sealing effect on the goaf is not good

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