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2018
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Invention
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Method for extracting gas by fracturing coal seam through combination of hydraulic slotting and m... |
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Invention
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Mine drill, dust suction hood and dust removal device thereof. A dust suction hood includes a tap... |
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Invention
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Integrated hole sealing device for loosening blasting and water injection of underground deep hol... |
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Invention
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Multi-stage combustion impact wave coal mass cracking and heat injection alternating intensified ... |
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Invention
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Multi-stage combustion shock wave-induced cracked coal body and heat injection alternating reinfo... |
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Invention
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Hydraulic cutting seam and multistage combustion shock wave combined coal-fracturing gas extracti... |
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Invention
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Integrated hole sealing device for loose blasting and water injection of underground well deep ho... |
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Invention
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Mining drill carriage and drilling and dust removal integrated device thereof. A drilling and dus... |
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Invention
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Mining drill and dust removal device therefor. Disclosed are a mining drill and a dust removal de... |
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Invention
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Mining drill and dust suction cover therefor, and dust removal device. Disclosed are a mining dri... |
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Invention
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Bedding borehole-based gas extraction method capable of avoiding air leakage. A bedding borehole-... |
