Research on Hydraulic Fracturing Technology of Long Boreholes along Strata of High Vast Thick Coal Seam

<div>Transient electromagnetic test equipment and results: (a) transient electromagnetic testing instruments and (b) results of transient electromagnetic probe fracturing radius.</div>

Advances in Civil Engineering

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Figure 16

Figure 16: Research on Hydraulic Fracturing Technology of Long Boreholes along Strata of High Vast Thick Coal Seam 