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The study aims to accurately determine the height of the water-conducting fractured zone (WCFZ) to prevent water inrush in coal mining operations.

July 8, 2026Scientific ReportsOpen Access

Multi-method synergistic determination of the development height of the water-conducting fractured zone in the 82,209 working face

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The study aims to accurately determine the height of the water-conducting fractured zone (WCFZ) to prevent water inrush in coal mining operations.
Established a multi-method system combining empirical formula calculation, key strata theory prediction, surface borehole field measurement, and numerical simulation.
Conducted field measurements at Borehole 1 and Borehole 2 in the No. 22 coal seam at Lijiayao Coal Mine.
Calculated WCFZ heights and analyzed data for accuracy using numerical simulation.
WCFZ height determined to be 64.52 m at Borehole 1 and 113.58 m at Borehole 2.
Key strata prediction showed relative errors of 0.69%–4.15%; numerical simulation showed errors of 1.36%–4.56%.
Numerical simulation identified a three-stage evolution law of the WCFZ: initial development, rapid expansion, and stable development.

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Randomized trial determines water-conducting fractured zone height in coal mines, suggesting improved prevention of water inrush.

Liu et al. (2026) studied this question.

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