A5089194313- Tunneling and Rock Mechanics
- Geotechnical Engineering and Analysis
- Grouting, Rheology, and Soil Mechanics
- Drilling and Well Engineering
- Geotechnical Engineering and Underground Structures
- Rock Mechanics and Modeling
- Civil and Structural Engineering Research
- Advanced machining processes and optimization
- BIM and Construction Integration
- Underground infrastructure and sustainability
- Advanced materials and composites
- Geotechnical and Geomechanical Engineering
- Civil and Geotechnical Engineering Research
- Mining Techniques and Economics
- Manufacturing Process and Optimization
- Concrete Properties and Behavior
- 3D Modeling in Geospatial Applications
- Orthopaedic implants and arthroplasty
- Geotechnical Engineering and Soil Stabilization
- Structural Engineering and Materials Analysis
- Occupational Health and Safety Research
- Metal Alloys Wear and Properties
- Sustainable Building Design and Assessment
- Fire effects on concrete materials
- Structural Engineering and Vibration Analysis
Ruhr University Bochum
2016-2025
Ghent University
2021
Deltares
2021
Deutsche Nationalbibliothek
2016
Herrenknecht (Germany)
2014-2016
Abstract In order to extend the range of application earth pressure balance (EPB) shields in closed mode, conditioning with foam has proved be particularly effective coarse‐grained soils. The properties soil‐foam‐mixture depend on support due high content. production and dosage up now mostly been based practical experience from job sites. To improve theoretical basis, research realistic carried out at Institute for Tunnelling Construction Management Ruhr University, Bochum, Germany....
Abstract The development of earth pressure shields started in 1974. processing the ground into an support medium originally required that it mostly consisted mixed and finegrained soil with at least 30 % silt clay. Since then, process technology has been subject constant further scope application considerably widened. Currently more than 90 shield machines worldwide are being used active face as whole spectrum soils, hard rock also transitional areas conditions. current state for is based on...
The planning of production, logistics, and maintenance in mechanized tunneling relies on project-specific conditions assumptions about numerous production parameters. Analyzing multiple scenarios for TBM is crucial ensuring robust project flow. Process simulation models are valuable this analysis. However, deviations from the plan often occur due to uncertainties initial unforeseen events during construction, especially given variable ground tunneling. This paper presents a concept adapting...
Abstract The clogging of Tunnel Boring Machine (TBM) tools by soils has long been investigated, owing to the numerous difficulties arising in shield tunnelling as a result. Its occurrence leads operation delays frequent and lengthy interventions required unblock soil stuck excavation screw conveyor. Several authors have proposed laboratory tests for evaluating potential, however, those include limitations, such not considering clay fraction soil. One these methods is empirical stickiness...
Infiltration of pressurised foam into saturated sand was investigated in a laboratory set-up that provided an hydraulic gradient comparable to real tunnels. Four different stages were identified the infiltration: ‘foam spurt’ (the infiltration pores sand); water flow with reduced permeability; increased and residual stage. It appears depth decreases increasing expansion ratio (FER) until limit FER (approximately 15 for foaming agent used this experiment). For higher FERs permeability remains...