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Method for modifying soil in subsidence area
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High-first-efficiency pre-lithiated silicon monoxide negative electrode material and preparation method and application thereof
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Mine inclined drifts vehicle stall protection friction plate
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Thick coal seam forced mining roadway blasting pressure relief and long anchor rod cooperative roof control method
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Composite nano grouting sealing-based gob-side entry driving construction method for remaining small coal pillar
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Self-foaming composite spraying material and preparation method thereof
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CN112250384A
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High-expansion quick-setting inorganic mining hole sealing material and preparation method thereof
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CN112282832A
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Mining coal spontaneous combustion prevention inhibition foam foaming agent and preparation method thereof
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CN112225848A
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Inorganic spraying mortar, preparation method and application thereof, and binder
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Supercritical carbon dioxide sand-carrying fracturing coal bed device and method
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Silicate modified polyurethane reinforcing material and preparation method and application thereof
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Polyurethane grouting reinforcement material and preparation method thereof
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CN112253038A
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Three-plugging two-injection hole sealing device and hole sealing method
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CN112250383A
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High-strength inorganic mining reinforcing material and using method thereof
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High-safety delayed hole sealing material for coal mine, and preparation method and use method thereof
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Low-temperature polyurethane grouting reinforcement material and preparation method thereof
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CN112245856A
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Mining inhibition foam solid foaming agent and preparation method thereof
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Mining high-water-content high-strength filling material and preparation method thereof
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Nano composite reinforced material and preparation method thereof
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