DOI: 10.11799/ce201701010
Experimental research on gob-side entry forming with roof cutting pressure releasing under shallow depth
YANG Han-hong
XUE Er-long
Abstract：Based on the principle of none-pillar mining with gob-side entry forming with roof cutting pressure releasing, the idea was proposed to carry out experimental research in shallow coal seam in the west of our country, and the typical 12201 working face of Halagou Coal Mine Shendong mining area was selected as the research objective. A series of experimental scheme was proposed, including reinforced support with constant resistance anchor cable, joint cutting with blasting technology, rock blocking of support-back with mono hydraulic I-steel frame. Construction was carried out according to the experimental design scheme, 968 blasting holes were constructed, 291 constant resistance cables were installed, 580m entry was formed with roof cutting. According to the monitoring, entry subsidence was 50mm during entry retaining, which was formed in good shape with stable roof. The technology of gob-side entry forming with roof cutting pressure releasing can be applied in the western mining area, which will provide important theoretical and experimental basis for alleviating the tension of mining-driving succession, reducing coeffient of driving for each 10, 000 tons coal output, and improving recovery of resources.
Keywords：constant resistance supportingentry forming with roof cuttingpre-splitting blastingcoefficient of driving
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 31-33,37 )