INFLUENCE OF LONGWALLING ON REINFORCED ROADWAYS IN PILLARS IN YALEVSKY MINE

Inspection of roadways with rock bolting in a pillar in thick flat coal seam 52 under mining in Yalevsky Mine is described. It is demonstrated that the variant of roadway support under discussion is typical of some engineering problems. This is not a standard variant as such roadways are operated for more than 5 years after completion of longwalling rather than are abandoned. The integrated research included assessment of actual condition of roadways and modeling of rock mass stress state. The actual condition was investigated in terms of various geomechanical situations, which provided time history of state of the roadways. It is found that longwalling affects the quality of roadways despite large width of pillars accommodating them. The drainage roadway is in satisfactory condition while the conveyor roadway has many considerable deformations. No systemic damages in the roof are revealed. It is found that sidewalls experience deformations, especially in the conveyor roadway. The sidewalls are worse deformed on the opposite side of the operating longwall. It is supposed that pillars have partly lost the load-bearing capacity. It is emphasized that the research should be continued with regard to direction of longwalling, advance speed of face and presence of areas immune to abutment pressure in the pillars.

For citation: Filimonov K. A., Renev A. A., Kucherenko A. V., Grechishkin P. V. Influence of longwalling on reinforced roadways in pillars in Yalevsky Mine. Gornyy informatsionno-analiticheskiy byulleten'. 2019;5:133-148. [In Russ]. DOI: 10.25018/0236-1493-2019-05-0-133-148.

 

Keywords

Pillar, longwall, rock movement, roof, stability, roadway support, roadway inspection, longwalling influence.

Issue number: 5
Year: 2019
ISBN: 0236-1493
UDK: 622.837:622.2.016
DOI: 10.25018/0236-1493-2019-05-0-133-148
Authors: Filimonov K. A., Renev A. A., Kucherenko A. V., Grechishkin P. V.

About authors: K.A. Filimonov (1), Candidate of Technical Sciences, Assistant Professor, e-mail: fka.rmpi@kuzstu.ru, A.A. Renev (1), Doctor of Technical Sciences, Head of Chair, e-mail: raa.rmpi@kuzstu.ru, A.V. Kucherenko, Chief Process Engineer, V.D. Yalevskogo Mine, 652207, Kotino, Russia, P.V. Grechishkin, Candidate of Technical Sciences, Director, e-mail: kf@vnimi.ru, Research Institute of Mining Geomechanics and Surveying — Multisectoral Research Center «VNIMI», 650000, Kemerovo, Russia, 1) T.F. Gorbachev Kuzbass State Technical University, 650000, Kemerovo, Russia. Corresponding author: K.A. Filimonov, e-mail: fka.rmpi@kuzstu.ru.

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