Scheme and Application of Filling along Goaf and Retaining Roadway Next to High Water Material Roadway in 8105 Working Face
In order to reduce the capital cost of the roadway and alleviate mining pressure,a certain coal mine used the method of filling the goaf with high water material next to the roadway based on factors such as the mining conditions of the 8105 working face and the conveying length of the retaining pump station.The effectiveness of the goaf retaining roadway was ensured by strengthening support,roadside support,and reinforcement support.After on-site mine pressure monitoring,the measurement results showed that after the surrounding rock of the retaining roadway was stable,the roof subsidence was 200 mm,the displacement of the two sides was 140 mm,and the average shrinkage rate of the roadway section was within 8％,ensuring the safety production of the mine.
high water materialsleaving lanes along the goafreinforcement support
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