文档介绍:文章编号:
1009 4539 (2022) 03 0139 04
富水闪长岩地层盾构渣土改良技术研究
te stratum from
Lishan Road Station to Qilibao Station of Jinan Metro Line 2ꎬ the scheme of bentonite + polymer for soil pressure balance
shield construction of water ̄rich diorite stratum was determined by analyzing the characteristics of different modifiers.
Bentonite and polymer improved residue were tested and analyzedꎬ and the influence of the injection position of the modifier
on the improvement effect was studied. The practice shows that the bentonite + polymer improved residue scheme has good
effect and is suitable for shield tunneling of water ̄rich diorite stratumꎬ which is beneficial to control the spouting of spiral
machine. Some suggestions on the selection of the injection location of the improver are put forward.
Key words
: earth pressure balance shieldꎻ water ̄rich dioriteꎻ slag improvementꎻ bentoniteꎻ polymer
配置应满足不同水文地质渣土改良的要求 在实
1 引言 ꎮ
际施工中 土压平衡盾构根据掘进的水文地质 隧