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Keywords: excavation
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Proceedings Papers

Paper presented at the ISRM SINOROCK 2013, June 18–20, 2013
Paper Number: ISRM-SINOROCK-2013-023
... equivalent mechanical parameters using multi-monitoring data and an intelligent algorithm at phase i opening of cavern. Then, the reliability of these identified parameters are validated at phase i + 1 opening of cavern. The equivalent mechanical parameters are achieved after several excavation phases...
Proceedings Papers

Paper presented at the ISRM SINOROCK 2013, June 18–20, 2013
Paper Number: ISRM-SINOROCK-2013-149
... Abstract Muzhailing railway tunnel is excavated mainly in fault zones, carbonaceous slate and sandstone using the drilling-blasting method. Geotechnical problems encountered in the tunnel during construction, such as large squeezing deformation with long duration and collapse of arch crown...
Proceedings Papers

Paper presented at the ISRM SINOROCK 2013, June 18–20, 2013
Paper Number: ISRM-SINOROCK-2013-134
... Abstract The deep-buried tunnels in Jinping II Hydropower Station are characterized by great depth, long length, large size in diameter and high geo-stress. During the excavation, by drilling and blasting method, of these tunnels, lots of the time-delayed rockbursts occurred; and blasting...
Proceedings Papers

Paper presented at the ISRM SINOROCK 2013, June 18–20, 2013
Paper Number: ISRM-SINOROCK-2013-099
... Abstract Analytical solutions are often not available due to the complexity of engineering conditions. Circular tunnels are special cases which have analytical solutions and can be used for preliminary analysis of underground excavations and to guide the design. It is more logical to regard...
Proceedings Papers

Paper presented at the ISRM SINOROCK 2013, June 18–20, 2013
Paper Number: ISRM-SINOROCK-2013-095
... is modeled. After excavation, the right slope has the contrary dip to faults but on the left slope the dip is similar to faults. Valley side slope presents tensile stress and the valley floor presents compressive stress. During valley incision the right slope display tensile stress state and its stress...
Proceedings Papers

Paper presented at the ISRM SINOROCK 2013, June 18–20, 2013
Paper Number: ISRM-SINOROCK-2013-110
...Rock Characterisation, Modelling and Engineering Design Methods Feng, Hudson & Tan (Eds) © 2013 Taylor & Francis Group, London, ISBN 978-1-138-00057-5 Numerical analysis of stability of underground excavation using stress release method H.Z. Li Department of Civil Engineering, Xi an Jiaotong...
Proceedings Papers

Paper presented at the ISRM SINOROCK 2013, June 18–20, 2013
Paper Number: ISRM-SINOROCK-2013-120
... the ground and specify an appropriate tunnelling method (excavation and support type) for the expected ground behaviour. The Austrian Society for Geomechanics pub- lished a guideline (OeGG 2010) with the aim of providing the engineers a general concept for the geomechanical design of underground structures...
Proceedings Papers

Paper presented at the ISRM SINOROCK 2013, June 18–20, 2013
Paper Number: ISRM-SINOROCK-2013-150
... Qingdao geotechnical investigation and surveying institute, Qingdao, China ABSTRACT: Underground storage is the future oil and gas storage technic. The stability of LPG storage caves and support optimization is the content of this paper. First, on the base of excavation monitoring data of cave...
Proceedings Papers

Paper presented at the ISRM SINOROCK 2013, June 18–20, 2013
Paper Number: ISRM-SINOROCK-2013-096
... University, Wuhan, Hubei, China Xingli Lu State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, Hubei, China ABSTRACT: Due to the stress redistribution after excavation, the pre-existent joints or cracks will deform...
Proceedings Papers

Paper presented at the ISRM SINOROCK 2013, June 18–20, 2013
Paper Number: ISRM-SINOROCK-2013-116
... of underground constructions. It is a sudden manifestation of the release of strain energy stored in the rock mass. At present, there is no universally accepted method for predicting and preventing of the rock burst. Rock bursts is one of the disasters can occur in deep mining and rock excavation. It is a kind...
Proceedings Papers

Paper presented at the ISRM SINOROCK 2013, June 18–20, 2013
Paper Number: ISRM-SINOROCK-2013-135
... Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, Hubei, China ABSTRACT: In order to research microseismic (MS) activity rules in the process of rockburst in deep tunnel, the immediate rockburst induced by TBM and D&B excavation are measured in the field. The attention law...
Proceedings Papers

Paper presented at the ISRM SINOROCK 2013, June 18–20, 2013
Paper Number: ISRM-SINOROCK-2013-151
... surfaces of the mesh were allowed to deform freely. No fluid flow was allowed from the ground surface. The pore pressure was maintained constant along the other sides of the mesh. Zero pore pressure was assigned to the nodes along the cavern boundaries after the completion of cavern excavation...
Proceedings Papers

Paper presented at the ISRM SINOROCK 2013, June 18–20, 2013
Paper Number: ISRM-SINOROCK-2013-156
... Abstract Basing on Huolangyu tunnel, the authors use the finite software MADIS-GTS to analyze stress field, displacement field, and plastic zone distribution of the surrounding rock under tunnel entrance excavation. They also study stress distribution rules of unsymmetrical pressure section...
Proceedings Papers

Paper presented at the ISRM SINOROCK 2013, June 18–20, 2013
Paper Number: ISRM-SINOROCK-2013-141
... required for excavation and support, common for all types of tunnels, the specific methodology for design of water pressure tunnels is presented. From definition of the objectives of the design, the necessary data to obtain from investigations are listed. Prevention of hydrojacking, management of seepage...
Proceedings Papers

Paper presented at the ISRM SINOROCK 2013, June 18–20, 2013
Paper Number: ISRM-SINOROCK-2013-072
... loading to fulfill visual excavation to the slope at random depth. Before constructing 3D model, searching of scientific model materials had been done. The simulation experiments were instrumented with acoustic emission (AE) censors, and monitored by crack optical acquirement (COA), ground penetrating...
Proceedings Papers

Paper presented at the ISRM SINOROCK 2013, June 18–20, 2013
Paper Number: ISRM-SINOROCK-2013-131
... real time system Engineering experiment stopper risk assessment tunnel face optical fiber excavation risk management displacement failure experiment real-time visual presentation sensor risk and uncertainty assessment devise mountain monitoring construction ground deformation...
Proceedings Papers

Paper presented at the ISRM SINOROCK 2013, June 18–20, 2013
Paper Number: ISRM-SINOROCK-2013-147
... analysis method information evolutionary algorithm Engineering recognition Upstream Oil & Gas Rock mechanics application IRM intelligent rock mechanics Hudson rock engineering mechanics intelligent analysis method China engineering problem excavation model structure Rock...
Proceedings Papers

Paper presented at the ISRM International Symposium on Rock Mechanics - SINOROCK 2009, May 19–22, 2009
Paper Number: ISRM-SINOROCK-2009-129
... excavation deep rock mass ABSTRACT A three-phase medium model was proposed for describing wave propagation across filled rock joints in the paper. Parameters in the three-phase medium model were identified by a series of modified split Hopkinson pressure bar (SHPB) tests, where a sand or clay layer...

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