Mine waste concrete full-filling flexible mold bag system and process
The mine waste concrete full-filling flexible mold bag system comprises a working face hydraulic support arranged in front of a coal seam in advance, a transportation roadway and an air return roadway which are communicated with the working face hydraulic support are arranged on the two sides of the...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The mine waste concrete full-filling flexible mold bag system comprises a working face hydraulic support arranged in front of a coal seam in advance, a transportation roadway and an air return roadway which are communicated with the working face hydraulic support are arranged on the two sides of the working face hydraulic support in advance, and a plurality of flexible mold bags are sequentially arranged in the transportation roadway. Grouting holes are formed in the multiple flexible mold bags, a filling pump is further arranged in the transportation roadway, and the filling pump is connected with the grouting holes through hoses; solid waste slurry conveying pipes are distributed on the inner wall of the transportation roadway, the mine waste concrete full-filling formwork is used for replacing coal pillars in a traditional method, the coal pillar type rock burst danger is effectively reduced, the coal recovery rate is increased, the problems that mining replacement is tense, unstable damage is prone to occ |
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