... convergence being higher than the horizontal one. It is thus of interest to evaluate the effect of flexible support composed of compressible wedges and of the final concrete lining on the closure evolution. Also, extensometers measurements and the stresses on the temporary support are analyzed in different...

... sections which includes MPBX extensometers and NATM pressure cells from the shallow depth M85 motorway tunnel which is excavated in soft ground and is situated beside Sopron city (Hungary). The measurement results give us opportunity to validate the LDP and to verify the tunnel support interaction...

...-marne underground research laboratory evolution sensor andra mhm url shaft lining callovo-oxfordian claystone extensometer 15th ISRM Congress 2023 & 72nd Geomechanics Colloquium. Schubert & Kluckner (eds.) © ÖGG Eighteen years of feedback on the mechanical behavior of a 500m deep shaft...

... geomechanics canada government geologist reservoir characterization tunnel geology tbm settlement excavation inclinometer displacement airport airport tunnel subsidence runway montreal tbm excavation underground deformation nouvlr extensometer tunnel excavation figure 15th ISRM Congress...

... extensometers, load cells, convergence stations and piezometers. Data collection and evaluation of results were conducted on a daily basis during the whole excavation process. Aiming to mitigate occurring deformations during the excavation stage, the rock support measures were modified accordingly. Furthermore...

... construction reservoir characterization salzburg-clay austria government phyllosilicate extensometer displacement vicinity confinement knowledge lacustrine deposit zt gmbh geotechnical instrumentation magnetostrictive extensometer diameter rainerstrasse alignment execution instrumentation...

... was done in terms of deformations recorded during seventeen years of dam operation by multiple rod extensometers. Dona Francisca HPP dam was built in 2000, on the Jacuí River, in the central region of the Rio Grande do Sul State, Brazil. The geological and geotechnical conditions of the foundation...

... intersection gcr gva intersection borehole extensometer hydraulic fracturing deformation extensometer experiment reservoir geomechanics gallery claystone fracture meuse haute-marne underground research laboratory diameter intersection cox claystone excavation compressible wedge mhm url...

... geotechnical instruments including roof and pillar extensometers, in-situ stress measurements, stress monitoring cells, convergence measurements and laser scanning technology. Due to the economical constraint and confined underground environment one pillar in each panel was monitored only. Therefore, extensive...

... surveying had been carried out since 2002. In 2006 two extensometers were installed, one in the zone of strongest heave, the second at the edge of the swelling zone. The extensometer in the center of the swelling zone indicated heave with an essential constant rate with seasonal variations, the heave...

... of radial extensometer, and convergence measurement Step 5: End of the digging up to 57.7 m (August 13th October 4th), Step 6: EDZ characterization started in February 2011 with radial boreholes drilling in order to make permeability mea- surements, velocity surveys, and to perform a structural analysis...

... Excavation Chain inclinometer above the crown in longitudinal direction – installed prior to the excavation – in order to measure the vertical pre-displacements Extensometer installed in the center of the cross section in longitudinal direction to determine the longitudinal pre-displacements Strain...

... pore water pressure extensometer provide early warning presentation sensor instrumentation displacement inclinometer computer landslide deformation Harmonising Rock Engineering and the Environment Qian & Zhou (eds) © 2012 Taylor & Francis Group, London, ISBN 978-0-415-80444-8 The role...

.... Upstream Oil & Gas gypsum crystal growth anhydrite extensometer vertical displacement mechanism discontinuity construction materials reinforcement borehole lining tunnel Reservoir Characterization displacement radial pressure Lilla tunnel supersaturation Alonso Invert sulphated...

... hydraulic pressure has acted on the tunnel crown level. 3 ANALYSIS OF MONITORING RESULTS AND APPLICATION OF BACK ANALYSIS 3.1 Analysis of monitoring results during pilot tunnel excavation Measurement from outside of tunnel has been performed, such as extensometer, inclinometer, pore water pressure...

...- dimensional, elastic, finite element calculation, carried out with Plaxis 3D Foundations program, has permitted to calculate the displacements of the tower and the stresses in the slab. The installation of rod extensometers at different depths below the slab has provided a comparison betweenmeasured...

... 2.87 43 0.2 15 Sandstone 2 17 1.67 38 0.2 7 Siltstone of roof 1 13 0.73 25 0.25 6 Siltstone of wall 1 13 0.73 30 0.25 6 Claystone 1.5 10 0.5 24 0.25 6 Figure 2. Excavation steps for the powerhouse and transformer caverns. The monitoring system installed in caverns, consist of 71 extensometers and 168...

... pressure instrument rock mass liquified natural gas extensometer pilot cavern operation drainage system LNG displacement rock cavern low temperature construction temperature profile Rock displacement geotechnical monitoring containment system 11th Congress of the International Society...

... monitoring step, 10 wire extensometers and a precipitation measuring devicewere installed in the early summer of 2001. Additionally, following a coordination meeting between the provincial authorities and the service for torrent, erosion and avalanche control, the federal road administration had a dam...

... Upstream Oil & Gas strength parameter stress-strain behaviour biotite schist Reservoir Characterization cohesion MPa servo-controlled testing machine failure envelope change response experimental result extensometer laboratory constitutive modeling volumetric strain deviatoric...