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WMATA use of the New Austrian Tunneling method for lining and support
conditions, which developed when the TBM encountered sands overlying very dense, hard glacial till or boulders, resulted in a shield and digger machine being used for a 518m long segment. Pumped wells spaced roughly 15 to 40m apart were utilized to dewater about two thirds of the alignment during construction. Initial support consisted of steel ribs and wood logging, with a final lining comprised of pre-cast concrete pipe segments grouted in place. 872268 NATM provides improved design and construction method for U.S. tunnel projects Cavan, B P; Rhodes, G W; Mussger, F K
Proc of the 1985 Rapid Excavation and Tunneling Conference, A'ew York, 16-20 June 1985 V2, P645-664. P,tbl New York: AL~IE, 1985 The New Austrian Tunnelling Method (NATM) has been successfully applied to two very difficult tunnelling projects in the US. In the case of Pittsburgh's Mr. Lebanon Tunnels, two original design alternatives were prepared. The NATM alternative incorporating a reinforced shotcrete final lining was successfully bid and constructed. At Washington Metro's (WMATA) section B-10 Glenmont Route, Wheaton Station and tunnels, a NATM value engineering redesign was prepared for the low bidder. The design incorporating a waterproofing system based on a PVC membrane between the initial and final linings was accepted by WMATA. In both cases, European experience and standards were meshed with US standard practice. Examples of NATM flexibility as an original design and as a value engineering proposal are presented. Auth. 872269 Thistle slide project: rail tunneling and tunneling techniques to drain Lake Thistle Martin, R E; Beebe, W C Proc o f the 1985 Rapid Excavation and Tunneling Conference, New York, 16-20 June 1985 V2, P678-707. Publ New York: AIME, 1985 An account is given of driving and concreting of two 900m railroad tunnels on the mainline of the Denver and Rio Grande Western Railroad under emergency conditions. The importance of on-site decision making by the owner in completing the project successfully in record time is detailed. A general description of the geology and construction methods is given. The Thistle Drainage Tunnel drained water impounded behind the Thistle slide and served as a permanent diversion of the Spanish Fork River and Thistle Creek around the slide area. The project involved 684m of 5m horseshoe tunnel, a 5m diameter raised shaft and 23,000cm of cut excavation. Auth. 872270 High speed tunneling beneath the streets of Manhattan Almeraris, G A; Peyton, T F; Plotkin, E S
Proc of the 1985 Rapid Excavation and Tunneling Conference, New York, 16-20 June 1985 V2. P708-724. Publ New York." AIME, 1985 High speed tunnelling by drilling and blasting in a heavily populated urban area is described. The project consists primarily of mining 2500m of tunnel through mica schist, excavating three shafts approximately 200m each and concreting lining 5300m of 7.34m inside diameter tunnel. The techniques developed and equipment utilized to ensure a high rate of tunnelling advance are described. Extensive planning and good
communications were especially essential in maintaining production of this project since tunnel mining, tunnel concreting, and shaft excavation all proceeded simultaneously from one common work shaft and a single heading. Auth. 872271 Economy version of small diameter rock boring O'Connor, D P Proc o f the 1985 Rapid Excavation and Tunneling Conference, New York, 16-20 June 1985 V2. P738-750. Publ New York: AIME. 1985 The Cal-Sag Relief Sewer in a 2.6m diameter 9. lkm rock tunnel bored in dolomite ['or the Metropolitan Sanitary District of Greater Chicago. Included in the project arc 18 shafts varying in depth from 70m to 41m. The way in which costs were reduced by eliminating conventional hand excavation, by hoisting muck from a high production tunnel boring machine through small diameter drilled shafts and using a trailing railutility backup system, is discussed. Auth. 872272 TBM system downtime - causes, frequency, and duration of six tunnel projects Nelson, P P; O'Rourke, T D; Glaser. S D Proc o f the 1985 Rapid Excavation and Tunneling Conference, New York, 16-20 June 1985 V2, P751-770. Publ New York: A IME, 1985 Construction records from six projects which employed fullface tunnel boring machines (TB*IJ to drive 18kin of tunnel in sedimentary rock have been analysed. More than twenty individual causes of delay could be identified. Delay causes are characterized on the basis of frequency and duration of incidents. Average utilization and downtime distributions are presented for each project, and frequency distributions of downtime per shift are discussed. Auth. 872273 Construction of New York City Water Tunnel No.3 Van Cortlandt Valve Chamber Complex Epstein, L A
Proc of the 1985 Rapid Excavation and Tunneling Conference, New York, 16-20 June 1985 V2, P802-821. Publ New York." AIME. 1985 The Van Cortlandt Valve Chamber Complex interconnects three stages of City Tunnel No.3. bringing together two separate reservoir tunnels with two main distribution tunnels, at two levels connected by various waterway and access shafts. The proper sequence and careful logistical management of construction were critical for the successful performance of the project, as is obvious from the description given. 872274 WMATA use of the New Austrian Tunneling Method for lining and support Heflin, L H
Proc of the 1985 Rapid Excavation and Tunneling Conference, New York, 16-20 June 1985 VI, P381-391. Publ New York: AIME, 1985 Washington's Wheaton Station and tunnel were excavated in jointed metamorphic rocks, mainly quartz chlorite mica schist. The initial specifications, accepted design using NATM, contractual restrictions, the accepted contract and its rock classification and corresponding support requirements are described.
1986 Pergamon Journals Ltd. Reproduction not permitted
Proc of the 1985 Rapid Excavation and Tunneling Conference, A'ew York, 16-20 June 1985 V2, P645-664. P,tbl New York: AL~IE, 1985 The New Austrian Tunnelling Method (NATM) has been successfully applied to two very difficult tunnelling projects in the US. In the case of Pittsburgh's Mr. Lebanon Tunnels, two original design alternatives were prepared. The NATM alternative incorporating a reinforced shotcrete final lining was successfully bid and constructed. At Washington Metro's (WMATA) section B-10 Glenmont Route, Wheaton Station and tunnels, a NATM value engineering redesign was prepared for the low bidder. The design incorporating a waterproofing system based on a PVC membrane between the initial and final linings was accepted by WMATA. In both cases, European experience and standards were meshed with US standard practice. Examples of NATM flexibility as an original design and as a value engineering proposal are presented. Auth. 872269 Thistle slide project: rail tunneling and tunneling techniques to drain Lake Thistle Martin, R E; Beebe, W C Proc o f the 1985 Rapid Excavation and Tunneling Conference, New York, 16-20 June 1985 V2, P678-707. Publ New York: AIME, 1985 An account is given of driving and concreting of two 900m railroad tunnels on the mainline of the Denver and Rio Grande Western Railroad under emergency conditions. The importance of on-site decision making by the owner in completing the project successfully in record time is detailed. A general description of the geology and construction methods is given. The Thistle Drainage Tunnel drained water impounded behind the Thistle slide and served as a permanent diversion of the Spanish Fork River and Thistle Creek around the slide area. The project involved 684m of 5m horseshoe tunnel, a 5m diameter raised shaft and 23,000cm of cut excavation. Auth. 872270 High speed tunneling beneath the streets of Manhattan Almeraris, G A; Peyton, T F; Plotkin, E S
Proc of the 1985 Rapid Excavation and Tunneling Conference, New York, 16-20 June 1985 V2. P708-724. Publ New York." AIME, 1985 High speed tunnelling by drilling and blasting in a heavily populated urban area is described. The project consists primarily of mining 2500m of tunnel through mica schist, excavating three shafts approximately 200m each and concreting lining 5300m of 7.34m inside diameter tunnel. The techniques developed and equipment utilized to ensure a high rate of tunnelling advance are described. Extensive planning and good
communications were especially essential in maintaining production of this project since tunnel mining, tunnel concreting, and shaft excavation all proceeded simultaneously from one common work shaft and a single heading. Auth. 872271 Economy version of small diameter rock boring O'Connor, D P Proc o f the 1985 Rapid Excavation and Tunneling Conference, New York, 16-20 June 1985 V2. P738-750. Publ New York: AIME. 1985 The Cal-Sag Relief Sewer in a 2.6m diameter 9. lkm rock tunnel bored in dolomite ['or the Metropolitan Sanitary District of Greater Chicago. Included in the project arc 18 shafts varying in depth from 70m to 41m. The way in which costs were reduced by eliminating conventional hand excavation, by hoisting muck from a high production tunnel boring machine through small diameter drilled shafts and using a trailing railutility backup system, is discussed. Auth. 872272 TBM system downtime - causes, frequency, and duration of six tunnel projects Nelson, P P; O'Rourke, T D; Glaser. S D Proc o f the 1985 Rapid Excavation and Tunneling Conference, New York, 16-20 June 1985 V2, P751-770. Publ New York: A IME, 1985 Construction records from six projects which employed fullface tunnel boring machines (TB*IJ to drive 18kin of tunnel in sedimentary rock have been analysed. More than twenty individual causes of delay could be identified. Delay causes are characterized on the basis of frequency and duration of incidents. Average utilization and downtime distributions are presented for each project, and frequency distributions of downtime per shift are discussed. Auth. 872273 Construction of New York City Water Tunnel No.3 Van Cortlandt Valve Chamber Complex Epstein, L A
Proc of the 1985 Rapid Excavation and Tunneling Conference, New York, 16-20 June 1985 V2, P802-821. Publ New York." AIME. 1985 The Van Cortlandt Valve Chamber Complex interconnects three stages of City Tunnel No.3. bringing together two separate reservoir tunnels with two main distribution tunnels, at two levels connected by various waterway and access shafts. The proper sequence and careful logistical management of construction were critical for the successful performance of the project, as is obvious from the description given. 872274 WMATA use of the New Austrian Tunneling Method for lining and support Heflin, L H
Proc of the 1985 Rapid Excavation and Tunneling Conference, New York, 16-20 June 1985 VI, P381-391. Publ New York: AIME, 1985 Washington's Wheaton Station and tunnel were excavated in jointed metamorphic rocks, mainly quartz chlorite mica schist. The initial specifications, accepted design using NATM, contractual restrictions, the accepted contract and its rock classification and corresponding support requirements are described.
1986 Pergamon Journals Ltd. Reproduction not permitted