硅酸盐通报2018，Vol.37Issue(1)：267-271,5.
兰州地铁下穿黄河段同步注浆的浆液试验研究
Slurry of Lanzhou Metro under the Synchronous Grouting in the Yellow River Section
摘要
Abstract
The slurry performance of synchronous grouting can be better controlled by shield tunneling in Lanzhou Metro under the Yellow River Sandy Cobble Stratum.The performance of slurry grouting in sand and gravel stratum was investigated by 8 groups of different proportioning.The slurry density, slurry fluidity, slump, consistency, setting time, water pouring test, anti water dispersion test and water separation rate and compressive strength were tested.Get the bentonite grout improves the stability of the pump;adding clay powder,the grouting cohesive capacity increases,improves the overall size and water resistance,but the addition of clay powder slurry, the slurry fluidity decreased, water content and clay content are the main factors of slurry condensation time and liquidity.The proportion of the obtained slurry is as follows:water 25% to 30%, bentonite 6%, cement 6% to 7%, fine sand 35% to 40%, clay powder and fly ash 20%to 25%.This will provide reference for shield tunneling through the Yellow River sand gravel stratum.关键词
兰州地铁/砂卵石/同步注浆/浆液配合比Key words
Lanzhou metro/sand gravel/synchronous grouting/slurry mixture ratio分类
建筑与水利引用本文复制引用
杨成,徐朝辉,赖远明,王旭..兰州地铁下穿黄河段同步注浆的浆液试验研究[J].硅酸盐通报,2018,37(1):267-271,5.基金项目
国家自然科学基金(41662017,41562014,51368035) （41662017,41562014,51368035）
甘肃省自然科学基金(145RJZA210) （145RJZA210）
长江学者和创新团队发展计划(IRT1139) （IRT1139）
