Analysis of Influence of Ultra-High Pressure Water Jet Cutting Pressure Sequence on Pressure Relief and Reflection Improvement of Coal Seam

<div>Fracture and stress distribution when fracturing pressure is 25 MPa. (a) Distribution of fractures. (b) Stress distribution condition.</div>

Advances in Civil Engineering

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Figure 7

Figure 7: Analysis of Influence of Ultra-High Pressure Water Jet Cutting Pressure Sequence on Pressure Relief and Reflection Improvement of Coal Seam 

Figure 7 | Analysis of Influence of Ultra-High Pressure Water Jet Cutting Pressure Sequence on Pressure Relief and Reflection Improvement of Coal Seam 