Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Bearing capacity of rock over mined cavities in Nottingham
Ground cavities are potential hazards for many construction projects. A significant geohazard is created in Nottingham, GB, by hundreds of man-made caves cut in the weak sandstone beneath the city centre. Stability of the caves has been assessed by a single full-scale loading test, by numerical modelling with FLAC and by physical modelling in plaster. For typical caves 4 m wide, bearing capacity of the rock roof rises from 2 MPa where it is 1 m thick to 8 MPa where 3 m thick. Stability decreases over wider caves and where the loading pad edge is over the edge of the cave. Numerical modelling of a very wide cave revealed the failure mechanisms and also showed that an internal support wall increased roof bearing capacity by 50 %. Local building regulations that require 3 - 5 m of rock cover over the sandstone caves appear to be conservative. In stronger rocks, including karstic limestone, a guideline that cover thickness exceeds 70 % of the cave width appears to be appropriate.
Bearing capacity of rock over mined cavities in Nottingham
Ground cavities are potential hazards for many construction projects. A significant geohazard is created in Nottingham, GB, by hundreds of man-made caves cut in the weak sandstone beneath the city centre. Stability of the caves has been assessed by a single full-scale loading test, by numerical modelling with FLAC and by physical modelling in plaster. For typical caves 4 m wide, bearing capacity of the rock roof rises from 2 MPa where it is 1 m thick to 8 MPa where 3 m thick. Stability decreases over wider caves and where the loading pad edge is over the edge of the cave. Numerical modelling of a very wide cave revealed the failure mechanisms and also showed that an internal support wall increased roof bearing capacity by 50 %. Local building regulations that require 3 - 5 m of rock cover over the sandstone caves appear to be conservative. In stronger rocks, including karstic limestone, a guideline that cover thickness exceeds 70 % of the cave width appears to be appropriate.
Bearing capacity of rock over mined cavities in Nottingham
Tragfähigkeit von Gesteinen über Abbauhohlräumen in Nottingham
Waltham, A.C. (Autor:in) / Swift, G.M. (Autor:in)
Engineering Geology ; 75 ; 15-31
2004
17 Seiten, 19 Bilder, 1 Tabelle, 12 Quellen
Aufsatz (Zeitschrift)
Englisch
Bearing capacity of rock over mined cavities in Nottingham
| Online Contents | 2004
Bearing capacity of rock over mined cavities in Nottingham
| British Library Online Contents | 2004
New Considerations on Rock Loads for Mined Tunnels
| British Library Conference Proceedings | 2006
Bearing Capacity of Ring Foundations over Rock Media
| ASCE | 2021