Coal pillar stoping method without gate road on fully mechanized coal mining face

The invention discloses a fully mechanized coal mining face mining method without reserving a crossheading coal pillar, which comprises the following steps: S1, according to a mining construction site, carrying out permanent support operation, injecting an anchor cable at the top of the mining site,...

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Bibliographische Detailangaben
Hauptverfasser: WANG LI, WANG LIPING, WANG BIQING, CAO GUOXUAN, GAO JIE, CHO MIJIN
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:The invention discloses a fully mechanized coal mining face mining method without reserving a crossheading coal pillar, which comprises the following steps: S1, according to a mining construction site, carrying out permanent support operation, injecting an anchor cable at the top of the mining site, and accurately reinforcing an anchor rod at the position of the anchor cable; s2, temporary support construction is conducted, specifically, wooden cap columns are adopted as temporary supports, the wooden cap columns are made of high-quality round timber with the length of 18 cm or above, the length of each wooden cap column is 2.2 m, each two caps are made of 1/220 cm * 50 cm two-section timber, the number of plane upward temporary columns is not less than 2 every 1.5 m, and arrangement of the working face of the section is completed; and S3, mining operation: in the process of mining the section, reserving a small coal pillar with the width of 4-6m on one side of the return airway along the goaf, taking a small