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Keyword [effective extraction radius]
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1. The Numerical Simulation Research For The Parameters Of Pre-pumping Coal Seam Gas In Hebi Third Mine
2. Research On The Deformation And Seepage Law Of Borehole Wall And Drilling Parameters Optimization
3. Study On Reasonable Level Layout Of High Drainage Roadway And Drilling Gas Extraction Technology In Changcun Mine
4. Analysis On Gas Drainage Effect Of Comb Borehole Directional Drilling In Xuehu Coal Mine
5. Research On CO2 Fracturing Enhanced Gas Pre-drainage Technology For Drilling Along Bedding In Low-permeability Outburst Coal Seams
6. Study On Hydraulic Punching And Enhanced Extraction Technology Of Drilling Through Outburst Coal Seam
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