摘要
针对盾构渣土资源化利用,依托苏州轨道交通8号线,基于实验室研究改进固化材料配比,将区间线路盾构渣土置拌成符合工程要求的同步注浆浆液。同时,新建8号线双线盾构隧道与既有3号线双线隧道在唐庄站交汇,形成两层四线叠落的特殊工况。本项目使用的渣土浆液稠度约为113 mm,7 d强度≥1 MPa,28 d强度≥2.5 MPa,满足工程要求。掘进过程中既有隧道结构的监测数据表明,盾构渣土浆液可以有效地控制新建盾构对既有建(构)筑物的影响。利用盾构渣土制备同步注浆浆液可实现渣土资源化利用,在推进绿色建造的同时降低隧道(双线)施工成本约75万元/km。
Focusing on the reuse of tunnel muck,this study aims to prepare tunnel muck from the Suzhou Metro Line 8 into a synchronous grouting material that satisfies the engineering requirements of different geological conditions by adjusting the solidification material compositions through laboratory experiments.In this project,a new double-line shield tunnel of Metro Line 8 intersects the existing double-line tunnel of Line 3 at Tangzhuang Station,forming a unique layout with two layers of four tracks.The muck-produced grout used in this project has a consistency value of 113 mm,and the 7-and 28-day strengths exceed 1 and 2.5 MPa,respectively,satisfying the engineering specifications.The deformation monitoring data show that the muck-produced grout effectively controls the impact of the upper tunnel construction on existing structures.Utilizing shield tunneling muck to prepare synchronous grouting slurry can achieve resource utilization of muck while promoting green construction and reducing construction costs by approximately 750 thousand Yuan per kilometer(double line).
作者
周艳家
杨国华
王炜
李闻韬
ZHOU Yanjia;YANG Guohua;WANG wei;LI Wentao(China Railway Electrification Bureau Group Co.Ltd.,Beijing 100071;Beijing University of Technology,Beijing 100124;Intelligent Urban Rail Engineering Research Center of Jiangsu Province,Suzhou,Jiangsu,215031;Nanyang Technological University,Singapore 639798)
出处
《都市快轨交通》
北大核心
2024年第3期135-140,共6页
Urban Rapid Rail Transit
基金
江苏省高等学校基础科学(自然科学)研究面上项目(23KJB560023)。
关键词
城市轨道交通
盾构渣土
注浆材料
绿色建造
叠落隧道
urban rail transit
shield muck
grouting material
green construction
stacked tunnels
