Jürgen Voringer, Reinhard Zenz, Anna-Maria Meyer, A. Strauss, A. Hofmann
{"title":"Experience with the TBM drive through clay rocks with low strength in the Boßler Tunnel","authors":"Jürgen Voringer, Reinhard Zenz, Anna-Maria Meyer, A. Strauss, A. Hofmann","doi":"10.1002/geot.201600084","DOIUrl":"https://doi.org/10.1002/geot.201600084","url":null,"abstract":"The Tunnel Albaufstieg consortium won the contract with an alternative proposal to drive a section about 2.8 km long of the 8.8 km long Boßler Tunnel with a tunnel boring machine (TBM). The next section, where squeezing conditions were forecast, was to be tunnelled by the shotcrete method according to the tender documents. Manifold and extensive additional investigations delivered the basis for the extension of the TBM drive along the entire length of the Boßler Tunnels. The driving of the section through the Aalenian 1 geology was problem free due to the low strengths and good cuttability of the rock mass combined with its impermeability. The next section in the intercalation of claystone and sandstone of the Aalenian 2 was much more differentiated but managable. The breakthrough of the east bore of the Boßler Tunnel confirms to the responsible people for the client and contractor that the decision to follow the aim of consistent mechanised tunnelling had been correct.","PeriodicalId":170042,"journal":{"name":"Geomechanics and Tunnelling","volume":"23 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116969179","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Imprint: Geomechanics and Tunneling 2/2017","authors":"","doi":"10.1002/geot.201770207","DOIUrl":"https://doi.org/10.1002/geot.201770207","url":null,"abstract":"","PeriodicalId":170042,"journal":{"name":"Geomechanics and Tunnelling","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127658379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Site Report: Geomechanics and Tunneling 1/2017","authors":"","doi":"10.1002/geot.201770106","DOIUrl":"https://doi.org/10.1002/geot.201770106","url":null,"abstract":"The new Eibsee gondola on the Zugspitze: Dywidag systems for Germany's highest construction site / Die neue Eibsee‐Gondel auf der Zugspitze: Dywidag‐Systeme für Deutschlands höchste Baustelle","PeriodicalId":170042,"journal":{"name":"Geomechanics and Tunnelling","volume":"278 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122296222","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"News: Geomechanics and Tunnelling 1/2017","authors":"","doi":"10.1002/geot.201770104","DOIUrl":"https://doi.org/10.1002/geot.201770104","url":null,"abstract":"Ceremonial breakthrough in the Bad Cannstatt Tunnel / Feierlicher Durchschlag im Tunnel Bad Cannstatt","PeriodicalId":170042,"journal":{"name":"Geomechanics and Tunnelling","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127845945","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Imprint: Geomechanics and Tunneling 1/2017","authors":"","doi":"10.1002/geot.201770109","DOIUrl":"https://doi.org/10.1002/geot.201770109","url":null,"abstract":"","PeriodicalId":170042,"journal":{"name":"Geomechanics and Tunnelling","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116999238","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Rockfall hazard zones in Austria. Experience, problems and solutions in the development of a standardised procedure","authors":"M. Mölk, B. Rieder","doi":"10.1002/geot.201600065","DOIUrl":"https://doi.org/10.1002/geot.201600065","url":null,"abstract":"The Österreichische Raumordnungskonferenz (ÖROK) set up a partnership in 2011 to deal with ”Risk management for gravitational natural hazards in landuse planning“. As gravitational natural hazards have a decisive influence on development in the Alpine Region, standard procedures were developed for the assessment of the relevance of these processes for landuse planning. This paper describes the recommended procedure for the assessment of hazards affecting permanent settlements from rockfall in a top‐down approach. The first step to define potential conflicts between the maximum run‐out of rockfall processes and the presence of settlements is a conservative empirical assessment based on rock outcrops serving as potential detachment zones and the maximum reach of such rockfalls, leading to a hazard indication map. This approach is only based on existing cartographic information, field investigations are not necessarily involved at this stage. To ensure conservative results, the use of a high‐resolution 1 m ground model to identify rock outcrops is re commended. The next step includes a thorough examination of those areas in the hazard indication map with conflicts between the maximum reach/run‐out of falling blocks and settlements. This stage includes field investigations with mapping of maximum reach blocks, block size distributions, underground conditions of the transit zone and the condition of rock outcrops that act as potential detachment zones. All this information is subsequently integrated into a 3D rockfall simulation. As a result the modelling enables a delineation of areas out of reach (no rockfall hazard), areas with potential impact energies ≤ 100 kJ (low intensity) and areas with potential impact energies > 100 kJ (high intensity).","PeriodicalId":170042,"journal":{"name":"Geomechanics and Tunnelling","volume":"17 7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125787906","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Dealing with natural hazards along federal and state roads in Bavaria","authors":"Thomas Zumbrunnen, K. Thuro, S. König","doi":"10.1002/geot.201600072","DOIUrl":"https://doi.org/10.1002/geot.201600072","url":null,"abstract":"Roads in the municipal Berchtesgaden are among the traffic infrastructure in Germany most highly endangered by natural hazards. Landslide, avalanche, rockfall and debris flow events led to repeated accidents and road closures. In order to improve the safety of main roads, a three‐stage approach has been introduced by the responsible road authority, especially in the light of finding the most suitable and sustainable solutions quickly. The first stage was a systematic spatial detection and delineation of all risk areas, as well as assessment of the level of risk and the resulting urgency. Based on this assessment, a more detailed investigation was conducted, leading to the development of tailored protection concepts. The main criteria for the entire design phase of any measure have always been the necessary level of protection, reasonable costs and environmental compatibility. Matching all these requirements is critical for rapid construction and therefore a reasonable use of resources. A good example of this approach is the integral protection concept for the B 21 main road with its central structure of a multifunctional protection gallery near Baumgarten. This has been completed recently, and several other projects are currently under construction.","PeriodicalId":170042,"journal":{"name":"Geomechanics and Tunnelling","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129569682","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Conference Report: Geomechanics and Tunneling 1/2017","authors":"","doi":"10.1002/geot.201770105","DOIUrl":"https://doi.org/10.1002/geot.201770105","url":null,"abstract":"Forum Tunnelbau and exhibition ”Historic Alpine tunnels“ at the RWTH Aachen University / Forum Tunnelbau und Ausstellung „Historische Alpendurchstiche” an der RWTH Aachen University","PeriodicalId":170042,"journal":{"name":"Geomechanics and Tunnelling","volume":"211 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133937261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Comparison of two 3D rockfall codes on behalf of a case study in the Bavarian Alps","authors":"Bettina Sellmeier, K. Thuro","doi":"10.1002/geot.201600071","DOIUrl":"https://doi.org/10.1002/geot.201600071","url":null,"abstract":"Rockfall events along main traffic routes in alpine regions emphasize the necessity of enhancing hazard assessment, especially in terms of rockfalls. In the field of regional rockfall modelling it becomes more and more important to work with 3D rockfall codes to account for morphological structures. Due to the general scale of regional rockfall modelling it is in most cases not possible to collect quantitative field data. Thus the input parameters are determined according to disposition models like in the Bavarian hazard map. The current paper deals with a detailed rockfall study which was accomplished during rockslope scaling works in the Bavarian Alps. The rock slope consisting of the Hauptdolomite‐Formation extends along the federal road B 305 north of the village of Schneitzlreuth in Bavaria. Due to attending rockslope scaling works in cooperation with the State Agency for Construction in Traunstein, a quantification of block dimensions according to real rockfall field tests was possible. After having determined the three main block axes for over 300 rocks, rockfall modelling were accomplished applying the 3D rockfall codes Rockyfor3D and Ramms::Rockfall. One part of the parameter studies covers the main proportion of the detected block sizes using Rockyfor3D. The second part of the study presents a comparison of the Rockyfor3D and Ramms::Rockfall outcomes, taking the same block class for both codes into account. This paper demonstrates the limits and possibilities of using different 3D rockfall codes taking detailed field data into account.","PeriodicalId":170042,"journal":{"name":"Geomechanics and Tunnelling","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131881460","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}