... into consideration. Figure 1: Central view in powerhouse cavern Figure 2: Deformation plot of AE-1 Figure 3. Typical deformation measurement of Drainage tunnel at station 0 + 250 chainage Excavation responses of various geological strata in the arch cavern were monitored by multiple bore hole extensometers. Multi...

... reservoir geomechanics displacement numerical analysis convergence determination Reservoir Characterization extensometer end point displacement discontinuity method element method measuring point rod extensometer analytical solution Upstream Oil & Gas Computer analysis failure...

.... Upstream Oil & Gas borehole subsidence extensometer experiment knowledge management coal peak particle velocity Anchor case study extensometer hole strata stabilisation burial depth Drilling equation metals & mining blast hole hole 2 monitoring damage zone vibration Static...

... geomechanics information identification knowledge management extensometer instrumentation program Upstream Oil & Gas shear zone contractor Reservoir Characterization Effectiveness powerhouse underground instrumentation safety factor excavation tunnel hardware abutment load instrumentation...

..., in a simple and direct way, would express the structural behaviour and allow, by their greatness and time evolution, the interpretation of such behaviour. Upstream Oil & Gas displacement plumb line important feature extensometer vertical section torrao hydraulic circuit excavation rock...

... structural geology variation nuclear power plant moisture content change marl Reservoir Characterization calculation sandstone extensometer moisture content characteristic excavation conglomerate coefficient emergency evaluation hypothesis suction elevation ABSTRACT...

... force and the inclination of the anchors to the horizontal. Preliminary predictions of the extensometer displacements are presented in the paper. 1 INTRODUCTION The finite-element stress analysis of the Thissavros powerhouse cavern on the Nestos river in Greece is presented in this paper. The finite...

... was monitored with extensometers. Very small deformations of a few millimeters were measured which were comparable with the calculated results. Résumé: On construit actuellement à Forsmark, en Suède, un dépôt central pour les déchets radioactifs de radioactivité basse ou moyenne des centrales nucléaires...

... borehole extensometer was in- ~talled in a 55 m vertical diamond bore- ole drilled from the surface above the Pillar in question. In the autumn 1973 the P~llar was blasted in steps, and readings ~ere taken on the extensometer after each llast until the final opening was estab- f~shed. The only movement...

... transportation Upstream Oil & Gas calculation Reservoir Characterization ground transportation cavern deformation modulus underground station huvudsta interpretation rock mechanical measurement Station Huvudsta stress field rock mass instrumentation reservoir geomechanics extensometer...

... stress conditions were undertaken in special tunnel recesses during the construction of the Access Tunnel. Mathematic models of Finite Elements (FEM)and Boundary Elements (BEM) were applied to predict any deformations surrounding the cavern. Mechanical and electrical extensometers and load cells...

... is the predominant rock of the formation. Siliceously cemented, hard and rather thinly bedded sandstone, and the medium soft claystone form the interbeds of the formation. Reservoir Characterization Thickness shotcrete underground feature extensometer penstock MPa excavation shaft Upstream Oil...

... work stoppages, the rock was seldom unsupported for more than 16 to 20 hours. Reservoir Characterization Upstream Oil & Gas mudstone diameter gauge extensometer liner west wall shaft reservoir geomechanics concrete liner shale stress change shaft bottom embedment gauge stress...

... and shotcrete. Rock mass Conditions are followed with precise levellings and extensometers during and after the construction stage. ZUSAMMENFASSUNG: InTampere baut man eine Gebirgsschutzraum, wo zwei Eishockeybahnen fuer Zivilgebrauch liegen werden. Sie ist eine Einzelhalle mit einer Spannweite von 32 m...

... OF SLOPE PROFILE AND PORE PRESSURE Fig.2 is the example of extensometers in 1975, 1976,1978. In the figure the extens- ion/compression observed by each extensomet- er is accumulated from the end of the ex- tensometer line. A right/up line shows extension and a right/down line shows com- pression. Since...

... for the whole working life of a tunnel (chemical desintegration), the ribs themselves have to be made of a durable 1023 0 200 400 600 800, ~ ~o ~ . lID , I [ m l\l Fig.lO Extensometer readings at the floor for different phases of 1024 s-s (8) A B ~SUPPORTi"'VERlI I RIBS FOAM- 4ifEE i i ~ROCK LAYER A B s Is s...

... SUMMARY This paper deals with the computation of the geomechanical parameters of the basaltic foundation of Aqua Vermelha concrete dam, from the deformation measurements of the multiple position rod extensometers and joint measurement devices. These extensometers were installed...

... cement ratio extensometer dense basalt vertical movement Fluid Dynamics communication water take determination foundation treatment absorption water pressure test rock mass foundation water injection PILOT GROUTING TEST IN SOME DAM SITES IN BRAZIL FLAVia MIGUEZ DE MELLO, Eng. - ENGE-RIO...

... Oil & Gas subsoil tarbela Anchor anchor head bearing plate bond length grout rock anchor extensometer strand diameter anchorage protection tube test anchor construction test load cement grout measuring means ROCK ANCHORS FOR THE SECURING OF STILLING BASIN Nl!3, TARBELA DAM...