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Searching Geotechpedia for tunnel support

<p>This document aims to offer a guide to the methods for tunnel face stability assessment in mechanized tunnelling and to provide a best practice guideline for face support pressure calculations. Furthermore, the document intends to help with the choice between ...
Reference: German Tunnelling Committee (ITA-AITES)
<p>An optimization model was developed to obtain the ideal values of the primary support parameters of tunnels, which are wide-ranging in high-speed railway design codes when the surrounding rocks are at the III, IV, and V levels. First, several sets of experiments ...
Reference: Journal of Engineering Science and Technology Review 8 (3) (2015) 201-209
<p>This paper examines excavation chamber pressure behavior within a 17.5 m diameter earth pressure balance tunnel boring machine (EPBM) used on the Alaskan Way viaduct replacement tunnel project in Seattle, Washington, USA. The study examines behavior during ...
Reference: International Conference on Tunnel Boring Machines in Difficult Grounds (TBM DiGs), Singapore, 18–20 November 2015
<p>Stability and potential failure mode of tunnels and underground rock caverns are directly related to the magnitude and orientation of the in-situ rock stress. In some cases, the high horizontal in-situ stress is essential in maintaining cavern stability, ...
Reference: VietRock 2015 International Workshop - an ISRM Specialised Conference, 12-13March 2015, Hanoi, Vietnam
<p>With widespread increasing applications of mechanized tunneling in almost all ground conditions, prediction of tunnel boring machine (TBM) performance is required for time planning, cost control and choice of excavation method in order to make tunneling ...
Reference: 11th Iranian and 2nd Regional Tunnelling Conference “Tunnels and the Future” 2-5 November 2015
<p>The Rock Mass Rating (RMR) System was introduced over 40 years ago, and since then has become a worldwide reference, along with the Q system, for design applications involving estimation of rock mass properties and tunnel support. A massive database of ...
Reference: Proceedings of the World Tunnel Congress 2014 – Tunnels for a better Life. Foz do Iguaçu, Brazil.
<p>This paper shows the results of the analysis of the data acquired during the excavation of the new &ldquo;Fabriano&rdquo; Tunnel along the railway line from Rome to Ancona in Italy. The comparison between the results of the analyses and the consolidation ...
Reference: Proceedings of the World Tunnel Congress 2014 – Tunnels for a better Life. Foz do Iguaçu, Brazil
<p>Flysch formations are generally characterised by evident heterogeneity in the presence of low strength and tectonically disturbed structures. The complexity of these geological materials demands a more specialized geoengineering characterisation. <br />In ...
Reference: Journal of Rock Mechanics and Geotechnical Engineering 6 (2014) 227-239
<p>Increasing demand on infrastructures increases attention to shallow soft ground tunneling methods in urbanized areas. Especially in metro tunnel excavations, due to their large diameters, it is important to control the surface settlements observed before ...
Reference: Environ Earth Sci., DOI 10.1007/s12665-012-2214-x
<p>For professional tunnel engineers, for whom money and time are in short supply particularly in early stages of a project, this paper critically assesses what works best with the RMR system, today 40 years after its development and extensive accumulated ...
Reference: RAPID EXCAVATION & TUNNELING CONFERENCE, June 2013
<p>Geotechnical Analysis System</p> <p>GTS NX is a comprehensive finite element analysis software package that is equipped to handle the entire range of geotechnical design applications including deep foundations, excavations, complex tunnel systems, seepage ...
<p>OTSA is a free online program for determining a circular tunnel deformation, based on the simplified method using Mohr-Coulomb failure criterion as discussed in Hoek (1999). The Ground Reaction Curve (GRC) will be constructed from the elasto-plastic solution ...
Software by  RocScience
<p>RocSupport is an easy to use software tool for estimating deformation in circular or near circular excavations in weak rock and visualization of the tunnel interaction with various support systems.</p>
Software by  RocScience
<p>RS2 (Phase2 9.0) is a powerful 2D finite element program for soil and rock applications (RS2 = Rock and Soil 2-dimensional analysis program). RS2 can be used for a wide range of engineering projects and includes excavation design, slope stability, groundwater ...
Software by  RocScience
3D Finite Element Analysis for Rock and Soil <p>RS3 is a brand new program for 3D analysis of geotechnical structures for civil and mining applications. Applicable for both rock and soil (RS3 = Rock and Soil 3-dimensional analysis program), RS3 is a general ...
Software by  ITASCA
<p><span class="nmc">UDEC</span> (Universal Distinct Element Code) is a numerical modeling code for advanced geotechnical analysis of soil, rock, and structural support in two dimensions. <span class="nmc">UDEC</span> simulates the response of discontinuous ...
Software by  Civiltech, Inc
<p>Upres is for designing tunnels and pipe lining using Dr. H. Einstein's method ("Improved Design of Tunnel Supports," prepared for the U.S. Department of Transportation, 1980). Tunnel can calculate the stress redistribution in soil, the moment, the thrust, ...
<p>Desanding plants are employed to remove soil partcles in drilling muds and support slurries used in foundation engineering. They can be either water-bentonite, water-polymere, or water-cement and bentonite suspensions. Desan-ding plants have further applications ...
<p>The Model 3000 Load Cell is made from an annulus of high-strength steel or aluminum, with electrical resistance strain gages in a Wheatstone Bridge configuration. The load cell is designed primarily for use on tiebacks and rockbolts, although they may be ...
<p>A Push-in Pressure Cell, also called Spade Cell, is designed to be pushed into the ground where it can measure total earth pressure and pore water pressure within the soil. It can be used as a site investigation tool to determine the in situ stress state, ...
<p>A Push-in Pressure Cell, also called Spade Cell, is designed to be pushed into the ground where it can measure total earth pressure and pore water pressure within the soil. It can be used as a site investigation tool to determine the in-situ stress state, ...
<p>Compact and lightweight ground penetrating radar<br /><br />RIS ONE and RIS PLUS are the most compact and lightweight antennas available on the market. Gain increased acquisition speed through a high stacking factor as well as improved penetration depth ...
<p>The Model 1610 Tape Extensometer is designed to measure small changes in the distance between opposite walls or between the roof and floor of excavations, tunnels, or mine openings. It can also be used to monitor deformation in structures and supports and ...
<p>The Vibrating Wire Load Cell is designed to directly measure load in piles, rock bolts and between tunnel supports, as well as tension in cable anchors. The load cell comprises a set of up to six Vibrating Wire gauges mounted parallel to the cell axis and ...
Tunnel Business Magazine   05 July 2018   World   World  
<p>The geology intersected along a tunnel is an overriding factor in many of the decisions that must be made in planning, designing, and construction. During planning and design, the geotechnical engineer must anticipate the behavior of the tunnel under several ...
trenchless-australasia   16 October 2017   Australia   Perth  
<p>Tunnelling on the Forrestfield-Airport link is progressing, hitting milestones with tunnel boring machine (TBM) Grace launched and underground, and TBM Sandy to follow soon.</p> <p>The Forrestfield site now houses facilities to support the machines, including ...
Filed under: Construction News
WTC 2018   31 August 2017   United Arab Emirates   Dubai  
<p>The ITA-AITES World Tunnel Congress is the world's leading tunnelling event, bringing together tunnel and underground space experts and professionals from all around the world. It is the one tunnelling event you cannot miss! Join over 2000 engineers and ...
<p>Two engineering teams have signed contracts to provide consultancy services and technical support for the Fehmarnbelt Tunnel project linking Germany and Denmark.</p> <p>Ramboll-Arup-TEC JV will provide developer Femern with technical consultancy services ...
Filed under: Construction News
Business Insider   16 March 2017   Norway   Europe  
<p>Stretching over 15 miles, Norway's Lærdal Tunnel has been the longest road tunnel in the world since it was built in the 1990s. <br><br>Now, the country is trying to construct the world's first tunnel for ships — which would see between 70 and 120 vessels ...
Filed under: Construction News
<p>UAE prime minister Mohammed bin Rashid has approved construction of a new AED500m (&pound;109m) link road.</p> <p>The 12km road linking Sheikh Mohammed bin Zayed Road and Emirates Road involves the construction of four interchanges including a tunnel and ...
Filed under: Construction News
WTC 2016   21 April 2016   USA   San Francisco  
<p>The fastest way to grow your business with the leading conference in Tunneling.<br>Attend WTC April 22-28, 2016 | San Francisco, CA<br>WTC is the #1 Conference supporting Tunneling<br>Attended by more than 2,500 tunneling professionals,<br>ITA-AITES WTC ...
SPLOID   12 January 2016   World   World  
<p>Yeah, I&rsquo;m not ashamed to admit this: I feel slightly less comfortable when I&rsquo;m under a tunnel than when I&rsquo;m not. It&rsquo;s not that I think that the tunnel will collapse on me but it&rsquo;s because I know the sky absolutely won&rsquo;t. ...
Filed under: Construction News
The Telegraph   14 July 2015   UK   London  
<p>A group of investors including the German insurance group Allianz has won a contest to invest &pound;4.2bn in London&rsquo;s new Thames super-sewer, one of the biggest infrastructure projects in the capital.<br />The investors will provide financial support ...
Filed under: Construction News