The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 31, 2018
Filed:
May. 13, 2015
China University of Mining and Technology, Xuzhou, CN;
Feng Ju, Xuzhou, CN;
Xiexing Miao, Xuzhou, CN;
Jixiong Zhang, Xuzhou, CN;
Xuejie Deng, Xuzhou, CN;
Xufeng Wang, Xuzhou, CN;
China University of Mining and Technology, Xuzhou, CN;
Abstract
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.