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Keyword [thick-hard roof]
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1. Study On Key Technologies Of Reasonable Mining In The Condition Of Soft Coal, Thick-hard Roof And Contiguous Seams
2. Study On Selection Of Roadway Protection Mode And Surrounding Rock Controlling Under Fracture Line Of Thick Hard Roof
3. Large Mining Height Thick Hard Roof Control Technology
4. Research On Advance Deep Hole Loose Blasting Technology In Coal Seam Thick Hard Roof
5. Study On Weakening Straight Overburden Sandstone Roof By Deep-hole Blasting
6. Thick-hard Roof Subsidence Control For Slowly Inclined Large-thick Ore Body Under High Tectonic Stress And Its Interaction Mechanism With Backfilling Body
7. Study On Open Mining Pressure Characteristics And Control Technology Of Unequal Thickness Coal Seam In Thick Hard Sandstone Roof
8. Research On Key Technology Of Roadway Retention Along Goaf Under The Condition Of Inclined Thick Layer And Hard Roof
9. Research On Advance Stress Distribution Law Of Thick Hard Roof And Optimization Of Advance Support Technology
10. Research On The Law Of Air Leakage In The Goaf Of Fully Mechanized Coal Mining Face In Deep Thick Hard Roof Thick Coal Seam
11. Research And Application Of The Design Method Of Rock Burst Parameters For Roof Deep Hole Pre-splitting Blasting
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