Temporary tunnel support using jet-grouted cylinders

Stella, C; Ceppi, G and D’Appolonia, E (1990) Temporary tunnel support using jet-grouted cylinders. Journal of Construction Engineering and Management, 116(1), pp. 35-53. ISSN 0733-9364

Abstract

A 750-m portion of the 7.1-km “Monte Olimpino 2” tunnel was located in glacial-fluvial silty sands and gravels. The 12-m-wide tunnel was advanced rapidly through the granular deposits by forming, in radial planes ahead of the excavation face, an arch support of slightly outward inclined and overlapping jet-grouted soil-cement cylinders. Measurements of strain at the surface and in the ground through vertical boreholes placed at two different sections demonstrate that the construction method adopted caused small ground movements without appreciable variation of the state of stress. The excavation was carried out without incidents over a 1.5-yr period. The tunnel was completed in time with savings both to the contractor and the client and with safety to men and equipment.

Item Type: Article
Index terms: construction method, variation, borehole, movement, excavation, face, savings, sand, tunnel
Subjects: building materials, health behaviours and lifestyles, economic analysis, infrastructure and transport systems, psychology, water management, contractual condition, construction operations, building construction
Topics: Sustainability, Business Strategy, Engineering Principles, Site Management, Organizational Design, Research Practice, Contract Administration
Descriptive scope: 2 PC

N.B. Descriptive scope is a count of how many of the five facets of empirical research are indicated by the words used in title, abstract and keywords. It is not intended as a judgement on the research; merely a count of the kind of word we would expect to indicate Phenomenon, Concepts, Theoretical framing, Empirical techniques, Analytical techniques. If all five are present, then a code of “5 PCTEA” will indicate this. If you feel the coding for this record is questionable, we welcome discussion around the terms we matched or the way we categorized them. The facet you would expect may not be coded, or a facet may be coded inappropriately. This can also bear on a larger question, of which facets should be treated as defining in construction management research. Please get in touch, and we will look at it. More details here