- Email: [email protected]
Earth pressure balanced shield machine to cope with boulders
346A 896460 Earth pressure balanced shield machine to cope with boulders Nishitake, S Proc 1987 Rapid Excavation and Tunnelling Conference, New Orleans, 14-17 June 1987 V1, P552-572. Publ Littleton: Society of Mining Engineers, 1987 The principles of the earth pressure balanced shield, its mechanical features, and slurry properties are described. Problems due to the presence of boulders are examined. Excavation is time consuming, and in situ crushing via the shield is preferred. Following laboratory studies, shields with roller disc cutters have been developed to crush boulders, and case studies illustrate their effectiveness.
896461 Chicago's mainstream deep tunnel project Baler, D R; Lasca, N P Proc International Symposium Tunnellingfor Water Resources and Power Projects, New Delhi, 19-23 January 1988 V1, P159-163. Publ New Delhi: Oxford and IBH Publishing Co, 1988 A system of tunnels and underground chambers is being excavated to alleviate flooding and water treatment problems in Chicago. 34km of the main tunnel have been excavated through the dolomite and shale bedrock by TBM. Extensive drilling, geophysical and laboratory tests were undertaken prior to excavation. Support is used at tunnel shaft intersections and in shale and fault zones. Extensive grouting was used to control inflows and exfiltration during construction and operation.
896462 NATM in-situ construction monitoring in soft rock stratum Yan Keqiang; Liu Xihao; Zang Xingwu Proc International Symposium Tunnellingfor Water Resources and Power Projects, New Delhi, 19-23 January 1988 V1, P165-168. Publ New Delhi: Oxford and IBH Publishing Co, 1988 During construction of 2 tunnels, one through sandy gravel, the other through a faulted and fractured rock mass, rock behaviour was monitored using extensometers and strain gauges. A finite element method was then developed to calculate elastic modulus and initial earth stresses from measured displacements and to assess support.
896463 Exporienee from more than 400km of tunnel construction in the hydro-power plants of the Verlmnd-Group Rienoessl, K
Proc International Symposium Tunnellingfor Water Resources and Power Projects, New Delhi, 19-23 January 1988 VI, P169-174. Publ New Delhi: Oxford and IBH Publishing Co, 1988 Evolution of tunnelling technology based on experience of an Austrian company is presented. Excavation using NATM, linings and excavation with TBM are described. 5 example projects demonstrate the evolution of mechanical tunnelling with machines.
896464 Water supply tunnel for Bombay Deshpande, D S; Taskar, S G Proc International Symposium Tunnelling for Water Resources and Power Projects, New Delhi, 19-23 January 1988 V1, P193-199. Publ New Delhi. OxJbrd and IBH Publishing Co. 1988 A hard rock TBM was used to excavate a tunnel through breccia with layers of weak volcanic deposits in order to miniraise disturbance to the rock structure around the cavity and reduce damage to overlying structures. Site investigation and TBM performance are described.
896465 Strategy for adoption of machine tunnelling in India Verman, M; Jethwa, J L Proc International Symposium Tunnellingfor Water Resources and Power Projects, New Delhi, 19-23 January 1988 V1, P201-206. Publ New Delhi." Oxford and IBH Publishing Co, 1988 The poor tunnelling rate achieved using drill and blast, particularly in the Himalayas, indicates the need to adopt machine methods. Planning for use of TBMs is discussed, considering adaptability, suitability of rock conditions, spoil removal, support system including use of shields, and cost. Overall, detailed planning is required, but use of TBMs will facilitate faster advance rates and be economical in the long term.
896466 Comparison of various design approaches for tunnel support Rantucci, G; Chandra, S; Yu-Shan Hsieh Proc International Symposium Tunnellingfor Water Resources and Power Projects, New Delhi, 19-23 January 1988 V1, P207-211. Publ New Delhi: Oxford and 1BH Publishing Co, 1988 Support requirements for a horseshoe tunnel through metasandstone were studied using 4 empirical methods, RQD, RMR, RSR and Q-system. Support design by NATM and by Rock Support Interaction Analysis is presented. Cost analysis is also detailed.
Power plants 896467 Rapid excavation of a 5.7km headrace tunnel in Shin'Aimoto hydroelectric power plant project - geostatisticai assessment and TBM application Tanimoto, C; Yoshikawa, T; Hohjo, A Proc Symposium on Rock Mechanics and Power Plants, Madrid, 12-16 September 1988 V1, P397-405. Publ Rotterdam." A A Balkema, 1988 A feasibility study for excavation of a headrace tunnel through gneiss, limestone and diorite is outlined. The longhole drilling and blasting, and TBM methods are described, and the amount of rock loosening caused by the 2 methods determined. This shows that the TBM causes approximately half the loosening of drill and blast. Criepi's method and Barton's Q system for rock classification were compared and showed good correlation.
© 1989 Pergamon Press pie. Reproduction not permitted
896461 Chicago's mainstream deep tunnel project Baler, D R; Lasca, N P Proc International Symposium Tunnellingfor Water Resources and Power Projects, New Delhi, 19-23 January 1988 V1, P159-163. Publ New Delhi: Oxford and IBH Publishing Co, 1988 A system of tunnels and underground chambers is being excavated to alleviate flooding and water treatment problems in Chicago. 34km of the main tunnel have been excavated through the dolomite and shale bedrock by TBM. Extensive drilling, geophysical and laboratory tests were undertaken prior to excavation. Support is used at tunnel shaft intersections and in shale and fault zones. Extensive grouting was used to control inflows and exfiltration during construction and operation.
896462 NATM in-situ construction monitoring in soft rock stratum Yan Keqiang; Liu Xihao; Zang Xingwu Proc International Symposium Tunnellingfor Water Resources and Power Projects, New Delhi, 19-23 January 1988 V1, P165-168. Publ New Delhi: Oxford and IBH Publishing Co, 1988 During construction of 2 tunnels, one through sandy gravel, the other through a faulted and fractured rock mass, rock behaviour was monitored using extensometers and strain gauges. A finite element method was then developed to calculate elastic modulus and initial earth stresses from measured displacements and to assess support.
896463 Exporienee from more than 400km of tunnel construction in the hydro-power plants of the Verlmnd-Group Rienoessl, K
Proc International Symposium Tunnellingfor Water Resources and Power Projects, New Delhi, 19-23 January 1988 VI, P169-174. Publ New Delhi: Oxford and IBH Publishing Co, 1988 Evolution of tunnelling technology based on experience of an Austrian company is presented. Excavation using NATM, linings and excavation with TBM are described. 5 example projects demonstrate the evolution of mechanical tunnelling with machines.
896464 Water supply tunnel for Bombay Deshpande, D S; Taskar, S G Proc International Symposium Tunnelling for Water Resources and Power Projects, New Delhi, 19-23 January 1988 V1, P193-199. Publ New Delhi. OxJbrd and IBH Publishing Co. 1988 A hard rock TBM was used to excavate a tunnel through breccia with layers of weak volcanic deposits in order to miniraise disturbance to the rock structure around the cavity and reduce damage to overlying structures. Site investigation and TBM performance are described.
896465 Strategy for adoption of machine tunnelling in India Verman, M; Jethwa, J L Proc International Symposium Tunnellingfor Water Resources and Power Projects, New Delhi, 19-23 January 1988 V1, P201-206. Publ New Delhi." Oxford and IBH Publishing Co, 1988 The poor tunnelling rate achieved using drill and blast, particularly in the Himalayas, indicates the need to adopt machine methods. Planning for use of TBMs is discussed, considering adaptability, suitability of rock conditions, spoil removal, support system including use of shields, and cost. Overall, detailed planning is required, but use of TBMs will facilitate faster advance rates and be economical in the long term.
896466 Comparison of various design approaches for tunnel support Rantucci, G; Chandra, S; Yu-Shan Hsieh Proc International Symposium Tunnellingfor Water Resources and Power Projects, New Delhi, 19-23 January 1988 V1, P207-211. Publ New Delhi: Oxford and 1BH Publishing Co, 1988 Support requirements for a horseshoe tunnel through metasandstone were studied using 4 empirical methods, RQD, RMR, RSR and Q-system. Support design by NATM and by Rock Support Interaction Analysis is presented. Cost analysis is also detailed.
Power plants 896467 Rapid excavation of a 5.7km headrace tunnel in Shin'Aimoto hydroelectric power plant project - geostatisticai assessment and TBM application Tanimoto, C; Yoshikawa, T; Hohjo, A Proc Symposium on Rock Mechanics and Power Plants, Madrid, 12-16 September 1988 V1, P397-405. Publ Rotterdam." A A Balkema, 1988 A feasibility study for excavation of a headrace tunnel through gneiss, limestone and diorite is outlined. The longhole drilling and blasting, and TBM methods are described, and the amount of rock loosening caused by the 2 methods determined. This shows that the TBM causes approximately half the loosening of drill and blast. Criepi's method and Barton's Q system for rock classification were compared and showed good correlation.
© 1989 Pergamon Press pie. Reproduction not permitted