Salamon-Munro Squat Pillar Strength Calculator

Deep Coal Geomechanics: Calculate pillar load-bearing capacity using the classic Salamon-Munro power formula and the Salamon-Wagner squat pillar confinement formulation.

Squat Pillar Dimensions

Pillar Width $w$ (m):

Seam Mining Height $h$ (m):

Entry Width $B$ (m):

Overburden Depth $H$ (m):

Empirical Constants

Unit Coal Strength $K$ (MPa):

Critical Ratio $R_0$:

Squat Hardening Exponent $\epsilon$:

Squat Pillar Capacity & Margins

Squat Pillar Strength ($\sigma_{\text{squat}}$)

-- MPa

Classical SM: -- MPa

Squat Safety Factor ($SF_{\text{squat}}$)

Classical SF: --

Confinement Enhancement

-- x

Regime: Squat Pillar

Average Pillar Load ($\sigma_{\text{load}}$)

-- MPa

Extraction Ratio: -- %

Geomechanical Assessment:

• Width/height ratio ($w/h = $ --): Low Burst Risk

• Salamon-Wagner squat formula accounts for massive triaxial confinement of the core.

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Salamon-Munro Squat Pillar Strength Calculator

Squat Pillar Dimensions

Empirical Constants

Squat Pillar Capacity & Margins

Frequently Asked Questions