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managing uncertainty in underground excavation design

Managing uncertainty in underground excavation design ...

2014-11-22  Design of underground mining operations, in their preliminary stages, often requires obtaining geomechanical data from re-logged rock core initially drilled for mineral exploration. The degree of alteration of this core due to handling and storage time increases uncertainty in the geotechnical parameters assessed and in the estimated required excavation support.

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Managing Uncertainty in Underground Excavation Design ...

Request PDF Managing Uncertainty in Underground Excavation Design Associated with Rock Mass Characterization Using Core Drilled for Mineral Exploration Design of

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(PDF) How to Handle Uncertainty - ResearchGate

Managing Uncertainty in Underground Excavation Design Associated with Rock Mass Characterization Usi... November 2014 Bulletin of Engineering Geology and the Environment Renato Macciotta

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Lecture 1: Introduction – Uncertainty Design

2018-5-15  Engineering design and means to manage uncertainty and reduce risk related to geological variability and uncertainty. 22 of 46 Erik Eberhardt – UBC Geological Engineering EOSC433/536 (2017) Course Learning Goals 4) Compare and contrast different analytical, empirical and numerical tools used in geotechn ical design, and demonstrate how

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A comprehensive underground excavation design (CUED ...

2021-7-1  Design of underground structures usually includes the use of location, size and shape, layout, excavation process, support system and monitoring. 1 Hoek and Brown 2 developed a design methodology for rock underground practices based on geological data, rock mass structures, groundwater condition, weathering, state of stress condition, and ...

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Reliability aspects of rock tunnel design with the ...

2017-10-1  Managing uncertainty in the initial design. When applying the observational method, as defined in Eurocode 7, 1 an initial design must be prepared before construction is started. The requirement on the initial design is that the structure must avoid exceeding the predefined limits of unacceptable behavior with sufficiently high probability ...

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Evaluation of ground management in underground

risks from rock hazards in underground excavations. Prediction of rock mass behaviour is a primary concern related to instability issues in design of openings. Design procedures usually consist of considering location, size and shape, layout, excavation method, support and reinforcement systems and monitoring (Bieniawski 1992).

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Managing Uncertainty and Expectations in Building

2019-2-22  explored and documented as the basis for design and construction, inviting change late in the process. SOURCES OF UNCERTAINTY 1 Understanding the top causes of uncertainty on construction projects is the fi rst step in anticipating them and managing risk. Seven major sources of uncertainty in building design and

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Life safety applied in full face excavation

2019-7-16  According to the A.DE.CO-RS Approach for full face tunnel excavation to frame the design and the construction of underground works it is necessary to divide them into two chrono-logically separate moments (Figure 1): a design stage and a construction stage (Lunardi, 2008). The design stage consisting of:

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GUIDE FOR TUNNELLING WORK

2021-8-16  6.2 Surface and underground fuelling 57 6.3 Specialist and other plant 58 7. OTHER TUNNELLING RISKS 61 ... Excavation associated with tunnelling includes vertical and inclined shafts providing access to tunnels, portals where tunnels emerge at the surface or at a shaft, underground chambers ... Safe design of structures. 1.3 Managing health and ...

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Lecture 1: Introduction – Uncertainty Design

2018-5-15  Engineering design and means to manage uncertainty and reduce risk related to geological variability and uncertainty. 22 of 46 Erik Eberhardt – UBC Geological Engineering EOSC433/536 (2017) Course Learning Goals 4) Compare and contrast different analytical, empirical and numerical tools used in geotechn ical design, and demonstrate how

More

Evaluation of ground management in underground

Abstract: A variety of challenges and problems are encountered by unstable rock failure which is associated with in situ stress, geological structures, geometry, excavation sequence, groundwater and operational conditions. It is basically required predicting ground behaviour and rock failure mechanism in a modern design of underground excavations. The complexity of ground

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The top 7 sources of uncertainty in building design - AIA

2021-12-10  Unknown site or building conditions: Rock or unstable soil during excavation, along with previously unidentified underground utilities or structural problems during a renovation, are just a few of the surprises that could pop up early in a project. Design or documentation mistakes: Nobody’s perfect, not even architects. More than 90 percent ...

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Uncertainty and Sensitivity Analysis of Significant ...

2021-2-23  Excavation of a superlarge diameter tunnel by tunnel boring machine (TBM) is different from that of a shield tunnel with normal dimension, in which the control system of the superlarge TBM is very complicated and difficult to operate. Hence, it is very important to focus on the control and management of significant parameters to ensure excavation stability under

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Tunnelling in Difficult Ground: How the Geotechnical ...

2019-7-2  The design of underground works has traditionally followed a deterministic approach, based on indirect management of the potential risks through a series of predetermined project decisions. In reality however both the design and construction phases are imbued with a certain degree of uncertainty, particularly with

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Work Health and Safety (Excavation Work) Code of

2016-3-30  This Code of Practice for managing health and safety risks associated with excavation work is an approved code of practice under section 274 of the Work Health and Safety Act (the WHS Act).. An approved code of practice is a practical guide to achieving the standards of health, safety and welfare required under the WHS Act and the Work Health and Safety

More

Life safety applied in full face excavation

2019-7-16  According to the A.DE.CO-RS Approach for full face tunnel excavation to frame the design and the construction of underground works it is necessary to divide them into two chrono-logically separate moments (Figure 1): a design stage and a construction stage (Lunardi, 2008). The design stage consisting of:

More

Geotechnical considerations in underground mines

2022-1-10  Geotechnical Considerations in Underground Mining/Department of Industry and Resources Guideline Document No.: ZME723QT 1.0 INTRODUCTION The potentially hazardous nature of underground mining requires the application of sound geotechnical engineering practice to determine the ground conditions, the ground support and reinforcement requirements, as

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MANAGING BURIED PIPING UNDERGROUND ASSET

2021-2-28  The BPWorks™ database is the new industry standard for managing buried pipe information at a nuclear site. It is a robust database for storing information with the potential to affect the internal or external corrosion potential of a buried or underground pipe. The database has fields to record data about the design,

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Underground Utility Line Protection Act

2016-1-5  Underground Utility Line Protection Act (P.L. 852, No. 287) as amended by the act (P.L. 1567, No. 199) of November 30, 2004. Amending the act of December 10, 1974 (P.L. 852, No. 287), entitled "An act to protect the public health and safety by preventing excavation or demolition work from damaging underground lines used in providing electricity,

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The top 7 sources of uncertainty in building design - AIA

2021-12-10  Unknown site or building conditions: Rock or unstable soil during excavation, along with previously unidentified underground utilities or structural problems during a renovation, are just a few of the surprises that could pop up early in a project. Design or documentation mistakes: Nobody’s perfect, not even architects. More than 90 percent ...

More

Uncertainty-aware geospatial system for mapping

2015-5-1  The geospatial 3G system, together with the proposed 3D probabilistic uncertainty bands, enables the mapping and visualization of some underground utilities in a non-destructive and uncertainty-aware manner to avoid disastrous utility strikes and promote safe excavations. Abstract Underground utility lines being struck is a long-standing problem worldwide, causing

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Tunnelling in Difficult Ground: How the Geotechnical ...

2019-7-2  The design of underground works has traditionally followed a deterministic approach, based on indirect management of the potential risks through a series of predetermined project decisions. In reality however both the design and construction phases are imbued with a certain degree of uncertainty, particularly with

More

Work Health and Safety (Excavation Work) Code of

2016-3-30  This Code of Practice for managing health and safety risks associated with excavation work is an approved code of practice under section 274 of the Work Health and Safety Act (the WHS Act).. An approved code of practice is a practical guide to achieving the standards of health, safety and welfare required under the WHS Act and the Work Health and Safety

More

Life safety applied in full face excavation

2019-7-16  According to the A.DE.CO-RS Approach for full face tunnel excavation to frame the design and the construction of underground works it is necessary to divide them into two chrono-logically separate moments (Figure 1): a design stage and a construction stage (Lunardi, 2008). The design stage consisting of:

More

Geotechnical considerations in underground mines

2022-1-10  Geotechnical Considerations in Underground Mining/Department of Industry and Resources Guideline Document No.: ZME723QT 1.0 INTRODUCTION The potentially hazardous nature of underground mining requires the application of sound geotechnical engineering practice to determine the ground conditions, the ground support and reinforcement requirements, as

More

MANAGING BURIED PIPING UNDERGROUND ASSET

2021-2-28  The BPWorks™ database is the new industry standard for managing buried pipe information at a nuclear site. It is a robust database for storing information with the potential to affect the internal or external corrosion potential of a buried or underground pipe. The database has fields to record data about the design,

More

Section 14 Design and Construction Schedules

2015-3-28  investigation program and excavation of adits in the dam abutments which are to required establish more definitive foundation characterizationto support feasibility and detailed design . Some basic site investigation has been undertaken in 2014, but because of the unpredictability – ... Underground construction based on 24-hour per day ...

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Underground Utility Line Protection Act

2016-1-5  Underground Utility Line Protection Act (P.L. 852, No. 287) as amended by the act (P.L. 1567, No. 199) of November 30, 2004. Amending the act of December 10, 1974 (P.L. 852, No. 287), entitled "An act to protect the public health and safety by preventing excavation or demolition work from damaging underground lines used in providing electricity,

More

Underground Installation of Optic Fiber Cable Placing

2020-3-4  Underground cable and ducts are part of the underground conduit system. Telecommunication conduits are made from various materials and buried directly into the soil or encased in concrete. Fiber optic cables have provided a more optimal use of available underground conduit space because of its small cable diameter and the much higher

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