China University of Mining and Technology

Xufeng Wang

Jixiong Zhang

Feng Ju

Xiexing Miao

Xuejie Deng

A method for removing a hydraulic support for solid filling coal mining includes digging a support removing channel () in a coal body () in front of the hydraulic support (), and laying a support removing track (), then removing the hydraulic support from a coal conveying gateway () to a track gateway (), temporary supporting is carried out by matching a single supporting column with a n-type steel beam before each hydraulic support is removed. A supporting roof is reinforced in time by means of erecting a crib () and grouting after each hydraulic support is removed, three grouting pipelines () are laid after the supports of the whole work surface are removed, and grouting is carried out in the whole finishing cut space. The roof of the support removing space of the work surface is stable so that the hydraulic supports on the work surface of solid filling coal mining are ensured to be safely and efficiently removed.

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Xuzhou, China

Xufeng Wang