TY - JOUR
T1 - Study on the overlying strata movements and stability control of the retained goaf-side gateroad
AU - Zhang, Zhiyi
AU - Shimada, Hideki
AU - Sasaoka, Takashi
AU - Kai, Wen
N1 - Funding Information:
This research was sponsored by Stare Scholarship Fund from China Scholarship Council (CSC). Authors would like to thank the engineers in the Pan Yidong coalmine for their corporations and field measurements. The favors from many fellows in the rock mechanics lab of Kyushu University are also appreciated.
Publisher Copyright:
© 2016, Kyushu University. All rights reserved.
PY - 2016
Y1 - 2016
N2 - Recently, Y type gateroad layout, which is based on a retained gob-side gateroad (RGG), is being widely used for the purposes of optimizing ventilation system, increasing coal recovery rate, etc. The RGG, however, suffers several engineering disturbances including roadway excavation and two adjacent longwall panels mining during its whole serving life, which makes the stability control of this kind of roadway is difficult. In order to have a deep insight of this issue, a novel simulation software referred to as Realistic Failure Process Analysis (RFPA) is employed in present study to analyze the overlying strata movements by which the redistributed stress is induced. And then, three RGG packfillings locations are compared and the most appropriate one is selected. After that, a combined roadway supporting method involving “three-high” rock bolts and novel grouting cable bolts are put forward to maintain the RGG stability. Finally, engineering practice is carried out in the Pan Yidong deep underground coalmine, and the results of field measurements indicate that the RGG supported by the proposed roadway stabilizing method meets all anticipatory mining goals.
AB - Recently, Y type gateroad layout, which is based on a retained gob-side gateroad (RGG), is being widely used for the purposes of optimizing ventilation system, increasing coal recovery rate, etc. The RGG, however, suffers several engineering disturbances including roadway excavation and two adjacent longwall panels mining during its whole serving life, which makes the stability control of this kind of roadway is difficult. In order to have a deep insight of this issue, a novel simulation software referred to as Realistic Failure Process Analysis (RFPA) is employed in present study to analyze the overlying strata movements by which the redistributed stress is induced. And then, three RGG packfillings locations are compared and the most appropriate one is selected. After that, a combined roadway supporting method involving “three-high” rock bolts and novel grouting cable bolts are put forward to maintain the RGG stability. Finally, engineering practice is carried out in the Pan Yidong deep underground coalmine, and the results of field measurements indicate that the RGG supported by the proposed roadway stabilizing method meets all anticipatory mining goals.
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M3 - Article
AN - SCOPUS:84994105967
VL - 76
SP - 1
EP - 17
JO - Memoirs of the Graduate School of Engineering, Kyushu University
JF - Memoirs of the Graduate School of Engineering, Kyushu University
SN - 1345-868X
IS - 2
ER -