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1.
Research The Law Of Surface Movement And Deformation Of Multiple Mining Under Confined Water Loss And Thick Unconsolidated Layers
2.
Research On The Mechanism And Early Warning Model Of Surrounding Rock Collapse In The Goaf Of Self-propelled Iron Mine
3.
Research And Application Of The Reasonable Position Of The Mining Roadway Under The Strip Coal Pillar
4.
Spatial And Temporal Evolution Law Of Water-conducting Channel For Repeated Mining Of Shallow-buried Coal Seam In Anshan Coal Mine
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