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Abstract: |
The measurement of floor specific pressure is the important project foundation in choosingreasonable pit support, support form and support parameter, and the significant indicator to classify theseam floor. On the basis of principle analysis on floor specific pressure measurement, Daizhuang coalmine in Zibo mining group had tests on the floor specific pressure in 4324 mechanized working faceduring the first and periodic pressure, the floor (limit) specific pressure, floor allowable specific pressure,floor stiffness and floor allowable stiffness are obtained. At the same time, according to the floorclassification standard of gently inclined seam of coal faces, the floor of 4324 working face is classified,and floor suitability of the mechanized support is evaluated. So it is very important for determiningreasonable support, support density and avoiding blindly increasing support codes, density and theamount of work of pillar and prop drawing by strengthening the floor specific pressure measurement,coupling with the analysis and application of the floor specific pressure parameter.
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