Calculation method for roadway floor pressure-relieving groove width
The invention discloses a calculation method for roadway floor pressure-relieving groove width. The method comprises the steps that first, a depth value h of a pressure-relieving groove is determined;second, a horizontal uniform load p is calculated; third, an elasticity modulus E of a stratum withi...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention discloses a calculation method for roadway floor pressure-relieving groove width. The method comprises the steps that first, a depth value h of a pressure-relieving groove is determined;second, a horizontal uniform load p is calculated; third, an elasticity modulus E of a stratum within the depth range of the pressure-relieving groove is determined; and fourth, the width l of the pressure-relieving groove is determined, and the width l of the pressure-relieving groove should satisfy the formula (shown in the description), wherein k is an extra-coefficient, l is the width of thepressure-relieving groove, nu is the Poisson's ratio of a roadway overlying stratum, gamma is average volume-weight of the roadway overlying stratum, H is roadway burying depth, h is the depth of thepressure-relieving groove, and E is the elasticity modulus of the stratum within the depth range of the pressure-relieving groove. The calculation method is simple, selection of the width of the pressure-relieving groove can be |
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