浅埋采场初次来压顶板砂土层载荷传递研究

Abstract

Abstract: Through the site measurement, the load transmitting phenomenon of thick sandy soil on the key roof stratum is found; and the concept of load transmitting factor of key roof stratum load layer is established. By simulating model test of dynamic load transmitting, the “arch type” and “thick arc shell” damage form of thick sandy soil layer upon shallow coal seam in first weighting is revealed. Finally, the formula of load transmitting factor during first weighting is set up. Those research and discovery will make progress on mined soil damage mechanism and dynamic roof structure theory.

Key words: shallow coal seam, thick sandy soil layer, first weighting, load transmitting factor

CLC Number:

TD 31
Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.

Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.

HUANG Qing-xiang. Study on load transmitting factor of thick sandy soil on key roof stratum during first weighting in shallow seam[J]., 2005, 26(6): 881-883.

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Study on load transmitting factor of thick sandy soil on key roof stratum during first weighting in shallow seam

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