摘要
大金山盾构隧洞段全长1264m,工程地质条件复杂,对盾构选型及施工有较大影响,盾构隧洞穿越地层为弱风化泥质粉砂岩、砂岩、砾岩和花岗岩,局部发育断裂破碎带、溶洞等。对盾构隧洞的工程地质条件进行了阐述,从盾构隧洞围岩稳定性、涌水和盾构机选型掘进效率等问题展开了分析研究,对盾构施工的顺利进行具有一定的参考意义。
The engineering geological conditions of Dajinshan shield tunnel are complex.This shield tunnel is 1264m long,winding through the stratum of weakly weathered argillaceous siltstone,sandstone,conglomerate,and granite,and there are some fracture zones and karst caves in its some parts.This paper expounds the engineering geological condition of shield tunnel,and analyzes the stability of surrounding rocks as well as the water gushing problem.Efficiency of different types of shield tunneling are also evaluated.This study,therefore,is instructive to ensure the construction of shielding.
作者
陈文杰
CHEN Wen-jie(Guangdong Hydropower Planning&Design Institute,Guangzhou 510635,China)
出处
《广东水利电力职业技术学院学报》
2018年第1期8-11,共4页
Journal of Guangdong Polytechnic of Water Resources and Electric Engineering
关键词
西江断裂带
盾构隧洞
砾岩
花岗岩
Xijiang fault
shield tunnel
conglomerate
granite
