چکیده مقاله
The development of transportation in large cities needs some new tunnels to be designed and constructed nearby existing tunnels In this study a metro tunnel will be excavated by EBP shield at different level from the sewage tunnel and it‟s beneath Both the relative position of tunnels and the excavation procedure of new tunnel effect the soil displacement and existing tunnel lining Hence, the effects of shield operation parameters face pressure, grouting pressure , overcut between shield skin and surrounding soil are studied using a 3D finite difference analysis The results showed that the largest interaction effects occur at the invert of existing tunnel Analysis result showed the effect on existing support system in longitudinal section of tunnel is larger than cross section Most effect on support occurs when ground moves into overcut space However, these affects decrease significantly with increasing the face pressure, grouting pressures and bentonite flow into steering gap between shield skin and surrounding soil
کلیدواژهها
نویسندگان
T Alemzadeh
department of mining engineering, Isfahan university of technology
R bagherpour
T Alemzadeh department of mining engineering, Isfahan university of technologys mahdevarie fasihi
s mahdevari
T Alemzadeh department of mining engineering, Isfahan university of technologyR bagherpoure fasihi
e fasihi
T Alemzadeh department of mining engineering, Isfahan university of technologyR bagherpours mahdevari
شیوه ارجاع
Alemzadeh, T and bagherpour, R and mahdevari, s and fasihi, e,1391,The affect of shield operation parameters and overcut On existing tunnel in multi-level crossing tunnels,9th International Congress on Civil Engineering,Isfahan
ارائهشده در
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