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Keywords: tunnel face
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Proceedings Papers

Paper presented at the ISRM SINOROCK 2013, June 18–20, 2013
Paper Number: ISRM-SINOROCK-2013-134
... of time-delayed rockbursts does not reduce with the increase of their distance from explosive center; (2) the risk of the time-delayed rockburst in situations with several working faces is obviously higher than that with single tunnel face; (3) most of the time-delayed rockbursts occur within seven days...
Proceedings Papers

Paper presented at the ISRM SINOROCK 2013, June 18–20, 2013
Paper Number: ISRM-SINOROCK-2013-136
... during the construc- tion stage, with more geologic information updated gradually. Note that this paper focuses on the risk assessment during tunnel construction. 2.2 Division of excavated region behind tunnel face This means the excavated region behind tunnel face is divided into several sections along...
Proceedings Papers

Paper presented at the ISRM International Symposium on Rock Mechanics - SINOROCK 2009, May 19–22, 2009
Paper Number: ISRM-SINOROCK-2009-011
... stress state at vault with increase of distance from free face at the direction ofperpendiculartunnelaxes;thestressisfirstlyassembled,thenfallsdownsuddenlycloseto zero and finally increases to some value as observed profile is firstly close to and then far away from the tunnel face. The laws above...
Proceedings Papers

Paper presented at the ISRM International Symposium on Rock Mechanics - SINOROCK 2009, May 19–22, 2009
Paper Number: ISRM-SINOROCK-2009-148
... Reservoir Characterization Upstream Oil & Gas TBM diameter excavation process Midstream Oil & Gas tunnel face rock condition rock machine installation shield structural geology cylinder water pressure excavation inflow hard rock tbm tunnel Gripper TBM geological...

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