A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Hydraulic Transportation and Solids Separation of Excavated Materials in Tunnels
Hydraulic transportation of tunnel muck can be safe and economical; however, it is not in wide use except in the Twin Cities area of Minnesota. There, it was developed along with hydraulic cutting for tunneling in the weak St. Peter sandstone. This combination has produced some of the lowest cost urban civil works tunnels in the United States. Most of the system used in the St. Peter sandstone could be used in soils and various soft rocks of other areas. It is the objective of this research project to increase the use of hydraulic transportation for tunnel muck by documenting the system which is now in use and by developing solids-water separation methods which will make the system compatible with the urban environment. Systems for solids-water separation have been designed based on tests at the laboratory scale. Three basic systems are proposed: discharge into public waters, disposal into sanitary sewers or re-use in the tunneling operation. These systems would add about thirty dollars per lineal foot of tunnel (8ft ID) for a total cost of about $630. The system for re-use of the water will be tested in the field at full scale.
Hydraulic Transportation and Solids Separation of Excavated Materials in Tunnels
Hydraulic transportation of tunnel muck can be safe and economical; however, it is not in wide use except in the Twin Cities area of Minnesota. There, it was developed along with hydraulic cutting for tunneling in the weak St. Peter sandstone. This combination has produced some of the lowest cost urban civil works tunnels in the United States. Most of the system used in the St. Peter sandstone could be used in soils and various soft rocks of other areas. It is the objective of this research project to increase the use of hydraulic transportation for tunnel muck by documenting the system which is now in use and by developing solids-water separation methods which will make the system compatible with the urban environment. Systems for solids-water separation have been designed based on tests at the laboratory scale. Three basic systems are proposed: discharge into public waters, disposal into sanitary sewers or re-use in the tunneling operation. These systems would add about thirty dollars per lineal foot of tunnel (8ft ID) for a total cost of about $630. The system for re-use of the water will be tested in the field at full scale.
Hydraulic Transportation and Solids Separation of Excavated Materials in Tunnels
S. M. Miller (author) / C. R. Nelson (author) / G. L. Christensen (author) / D. H. Yardley (author)
1977
307 pages
Report
No indication
English
Stresses around two parallel excavated horizontal circular tunnels
| Engineering Index Backfile | 1959
Predicting Sequeezing Potential in Tunnels Excavated in Jointed Rocks
| British Library Conference Proceedings | 2002