- Design and Behavior of A Deep Excavation Adjacent to Existing Buildings and Tunnels
- Q. LI ; W.D. Wang ; Z.H. Xu
- ICGE Colombo 2015
- Year: 2015
- Deep Excavations ; Tunneling ; Instrumentation
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- Monitoring dataset of deformations related to deep excavations for North-South Line in Amsterdam
- M. Korff ; F. J. Kaalberg
- IS SEOUL '14
- Year: 2014
- Deep Excavations ; Underground Structures ; Instrumentation
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- Performance Assessment of Synthetic Shock Mats and Grids in the Improvement of Ballasted Tracks
- D. Christie ; T. Neville ; C. Rujikiatkamjorn ; S. Nimbalkar ; B. Indraratna
- Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering, Paris, September 2-6 2013
- Year: 2013
- Railway Geotechnics ; Geosynthetics for Reinforcement ; Laboratory Testing ; Instrumentation
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- Microseismic Monitoring Developments in Hydraulic Fracture Stimulation
- M. van der Baan ; D. Eaton ; M- Dusseault
- Book Title / Journal: Effective and Sustainable Hydraulic Fracturing
- Year: 2013 , Series: Chapter 21
- Instrumentation ; Mining
- Description
- The last decade has seen a significantly increased interest in microseismic monitoring by the hydrocarbon industry due to the recent surge in unconventional resources such as shale-gas
and heavy-oil plays. Both hydraulic fracturing and steam injection create changes in local pore pressures and in situ stresses and thereby brittle failure in intact rock plus additional slip/shearing in naturally fractured rock. Local rock failure or slip yields an acoustic emission, which is also known as a microseismic event. The microseismic cloud represents thus a volumetric map of the extent of induced fracture shearing, opening and closing. Microseismic monitoring can provide pertinent information on in situ reservoir deformation due to fluid stimulation, thus ultimately facilitating reservoir drainage. This paper reviews some of the current key questions and research in microseismicity, ranging from acquisition, processing to interpretation.
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- Performance verification of a geogrid mechanically stabilised layer
- J. Kwon ; B. Reall ; I. Fraser ; M. Wayne
- Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering, Paris, September 2-6 2013
- Year: 2013
- Pavement Geotechnics ; Geosynthetics ; Geosynthetics for Reinforcement ; Instrumentation
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- Importance of Fracture Closure to Cuttings Injection Efficiency
- M. Bai ; A. Diaz ; J. McLennan ; Ju Reyna
- Book Title / Journal: Effective and Sustainable Hydraulic Fracturing
- Year: 2013 , Series: Chapter 39
- Instrumentation
- Description
- The major benefit of adequate fracture closure is to release injection pressure and restore it to its initial magnitude during the shut-in period to prevent gradual pressure build-up over the injection batches that follow. This paper examines a number of injection cases where the
benefits of adequate fracture closure and the detrimental impacts of insufficient fracture closure are respectively revealed.
In-depth examination of fracture closure impact can be set for short durations with relatively fewer injection batches, as well as for long periods with numerous batch injections. The former scenario focuses on determining the physics of the individual fracture closure, while the latter situation emphasizes the general trend with respect to peak pressure at the end of injection and terminal pressure at the end of the shut-in period.
In addition, this paper addresses the added complexities during fracture closing after shut-in
that can be identified from the relationship between injection pressure and the G function
superposition derivative. Straight-line behavior usually indicates that the formation is homogeneous and leak-off from the fracture into the formation is linear. Other responses such
as concave or convex shapes of the G superposition derivative relationship may indicate the formation is either naturally fractured or tight (i.e., low permeability). Or, the pressure decline
shapes may imply fracture tip extension, or fracture height recession. Direct examination of
the pressure decline curves may reveal the relationship between the fracture responses and
formation characteristics.
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- Monitoring and Instrumentation of demonstrators storage cells (CMHM)
- J. Morel ; F. Bumbieler ; P. Teixeira ; O. Gay
- Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering, Paris, September 2-6 2013
- Year: 2013
- Instrumentation ; Underground Structures
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- Soil Fracturing Induced by Land Subsidence in Mexico City
- M. Juárez ; E. Méndez ; G. Auvinet
- Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering, Paris, September 2-6 2013
- Year: 2013
- Groundwater Pumping ; Instrumentation
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- Preventive maintenance of water retaining structures based on fiber optic systems
- P. Pinettes ; Y.-L. Beck ; J.-R. Courivaud ; J.-J. Fry
- Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering, Paris, September 2-6 2013
- Year: 2013
- Dam Engineering ; Levees ; Geotechnical Earthquake Engineering ; Instrumentation
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- Geotechnical protection of engineering infrastructure objects in large cities under intense anthropogenic impact and long term operation
- A.N. Perminov ; V.N. Zentsov ; N.A. Perminov
- Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering, Paris, September 2-6 2013
- Year: 2013
- Tunneling ; Instrumentation
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- Case Study on X-section Cast-in-place Pile-Supported Embankment over Soft Clay
- G. Yang ; T. Yu ; X.M Ding ; G.Q. Kong ; H.L. Liu
- Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering, Paris, September 2-6 2013
- Year: 2013
- Pile Foundations ; Instrumentation
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- Physical modelling of blocking phenomenon, by injection of a clogging product, of water flow through soils
- J.J. Fry ; M. Chopin ; C. Chevalier ; J. Canou ; J.-C. Dupla ; Q.Q. Truong
- Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering, Paris, September 2-6 2013
- Year: 2013
- Dam Engineering ; Erosion ; Instrumentation
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- Role of the facing on the behaviour of soil-nailed slopes under surcharge loading
- S. Cola ; A. Bisson ; P. Simonini ; N. Sanvitale
- Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering, Paris, September 2-6 2013
- Year: 2013
- Retaining Walls ; Instrumentation ; Earth Retaining Structures
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- Experimental reinforced soil walls built with recycled construction and demolition waste (RCDW)
- E.M. Palmeira ; E.C.G. Santos
- Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering, Paris, September 2-6 2013
- Year: 2013
- Retaining Walls ; Geosynthetics ; Instrumentation
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- Investigation of differential movement at railroad bridge approaches through geotechnical instrumentation
- D. Mishra ; E. Tutumluer ; T.D. Stark ; J. Hyslip ; S. Chrismer ; M. Tomas
- Book Title / Journal: Journal of Zhejang University
- Year: 2012 , Volume: 13
- Instrumentation
- Description
- Railway transitions experience differential movements due to differences in track system stiffness, track damping characteristics, foundation type, ballast settlement from fouling and/or degradation, as well as fill and subgrade settlement. This differential movement is especially problematic for high speed rail infrastructure as the ‘bump’ at the transition is accentuated at high speeds. Identification of different factors contributing towards this differential movement, as well as development of design and maintenance strategies to mitigate the problem is imperative for the safe and economical operation of both freight and passenger rail networks. This paper presents the research framework and initial instrumentation details from an ongoing research effort at the University of Illinois at Urbana-Champaign. Three bridge approaches experiencing recurrent geometry problems were instrumented using multidepth deflectometers (MDDs) and strain gages to identify different factors contributing to the development
of differential movements.
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