Zobrazeno 1 - 10
of 45
pro vyhledávání: '"Gunnar, Gustafson"'
Publikováno v:
In Tunnelling and Underground Space Technology incorporating Trenchless Technology Research January 2013 33:54-62
Publikováno v:
In Tunnelling and Underground Space Technology incorporating Trenchless Technology Research July 2012 30:132-144
Publikováno v:
Journal of Applied Mathematics, Vol 2013 (2013)
In Swedish tunnel grouting practice normally a fan of boreholes is drilled ahead of the tunnel front where cement grout is injected in order to create a low permeability zone around the tunnel. Demands on tunnel tightness have increased substantially
Externí odkaz:
https://doaj.org/article/cbb75060de70441aad715f6c5c96ba3a
Publikováno v:
Geotechnical and Geological Engineering. 30:603-624
Permeation grouting is used to improve rock conditions under dams and foundations. During recent decades, there has been a substantial increase of understanding of the mechanism behind grout spread in fractured rock. It is the penetrability of the gr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b3eff4faaa0d6c0b6755431d738dd4b8
https://doi.org/10.1007/s10706-012-9512-7
https://doi.org/10.1007/s10706-012-9512-7
Publikováno v:
International Journal of Rock Mechanics and Mining Sciences. 47:887-893
Sealing of tunnel sin fractured rocks is commonly performed by pre- or post-excavation grouting. The grouting boreholes are frequently drilled close to the tunnel wall, an area where rock stresses can be low and fractures can more easily open up duri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::67b55a66e1dc24b9ad62e28abb2dbb1a
https://doi.org/10.1016/j.ijrmms.2010.05.007
https://doi.org/10.1016/j.ijrmms.2010.05.007
Autor:
Gunnar Gustafson, Björn Stille
Publikováno v:
Tunnelling and Underground Space Technology. 25:346-356
The 6 km tunnel under the Namntall hill is a part of the Botniabanan railway project in northern Sweden. The tunnels were excavated by means of drilling and blasting and with, for Scandinavian conditions, a normal grouting routine. The grouting is pe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f1b889fb0f9d62a373a5e2329cf6dc9a
https://doi.org/10.1016/j.tust.2010.01.009
https://doi.org/10.1016/j.tust.2010.01.009
Publikováno v:
Tunnelling and Underground Space Technology. 25:114-121
This paper presents a new pre-excavation grouting concept to prevent dripping and reduce the inflow into a railway tunnel. For this purpose, the tunnel's roof was drip-sealed using colloidal silica and the walls and invert of the tunnel were grouted
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2c33f3939f3d0dceda25a6e5689a7620
https://doi.org/10.1016/j.tust.2009.09.008
https://doi.org/10.1016/j.tust.2009.09.008
Autor:
Gunnar Gustafson, Magnus Axelsson
Publikováno v:
Tunnelling and Underground Space Technology. 25:1-8
One of the most crucial parameters for successful grouting is to ensure that the grout can penetrate the necessary apertures. For the most commonly used grout, cementitious grout, the available methods for determining the ability to penetrate apertur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::34b12a2d227614b2178b076cffed058f
https://doi.org/10.1016/j.tust.2009.06.004
https://doi.org/10.1016/j.tust.2009.06.004
Publikováno v:
Tunnelling and Underground Space Technology. 24:603-607
A recently introduced non-cementitious grout silica sol is a refined product of colloidal silica, where the particle sizes have been reduced to between 5 and 100 nm. Laboratory tests were performed to determine the behaviour of silica sol as a permea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d43d984f2556bd0e2a1091e7ea2cee91
https://doi.org/10.1016/j.tust.2009.04.003
https://doi.org/10.1016/j.tust.2009.04.003
Publikováno v:
Geomechanik und Tunnelbau. 2:447-459
A new concept of real time grouting control method is described by which grout penetration and grouting control are made applicable in real time by applying theories for grout spread. The stop criterion with this method can be related to achieved gro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a5b230d3e15c9263766153771fd45e51
https://doi.org/10.1002/geot.200900036
https://doi.org/10.1002/geot.200900036