Method for determining caving height of overlying strata on top plate based on slight shock and support working resistance
The invention provides a top plate overlying strata caving height determination method based on microseism and support working resistance, and the method comprises the steps: classifying each rock stratum in a top plate into a cantilever beam structure or a masonry beam structure based on whether th...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention provides a top plate overlying strata caving height determination method based on microseism and support working resistance, and the method comprises the steps: classifying each rock stratum in a top plate into a cantilever beam structure or a masonry beam structure based on whether the basic top height of each rock stratum in the top plate is greater than a caving space or not and the ratio of the periodic weighting step pitch of each rock stratum to the basic top height; determining the working resistance of the working face bracket according to the load of the working face during current weighting; according to the working resistance of the working face support and the support working resistance applied by the cantilever beam structure rock stratum, the support working resistance applied by the masonry beam structure rock stratum is determined; determining the development height of the masonry beam structure rock stratum when the masonry beam structure rock stratum is broken for the first tim |
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