不良地质动水封堵加固材料试验及工艺研究  

Test and process research of poor geological dynamic water plugging reinforcement material

作　　者：王洪波[1] 张庆松[1] 刘人太[1] 李术才[1] 张乐文[1] 姜鹏[1] 

机构地区：[1]山东大学岩土与结构工程研究中心,山东济南250061

出　　处：《岩石力学与工程学报》2017年第A02期3984-3991,共8页Chinese Journal of Rock Mechanics and Engineering

基　　金：国家自然科学基金资助项目(41272385);博导基金项目(20130131110032);山东大学基本科研业务费资助项目(2015YQ002)~~

摘　　要：针对传统动水注浆材料受水含量影响大、后期体积倒缩、抗动水分散能力差、成本高等缺点,基于动水注浆治理工程需求,提出一种以粉煤灰为主的地聚合物和以水玻璃为主的添加剂双组份动水注浆材料(FS),并对浆液的性能进行了研究。通过试验测定不同水含量、添加剂掺量条件下材料的初终凝时间、1 h后结石率、抗压强度和可泵性等参数;获得新型动水注浆材料(FS)具有速凝、早强、微胀、结石率高、强度受水含量影响较小、抗动水冲刷能力强的特点;并配套地提出了利用该材料进行动水注浆治理的分层次系列式联合钻孔注浆封堵加固技术,阐述该技术的原理和方法。新型注浆材料(FS)和注浆技术在南京地铁五塘广场车站的成功应用,验证了该材料和技术的科学性,同时大大减少了治理成本,希望对动水注浆材料和技术革新有借鉴意义。Traditional dynamic water grouting materials have the shortcomings of water content,volume shrinkage,poor of the late hydrodynamic dispersion resistance and higher cost.Based on the demand of dynamic water grouting treatment project,we propose a two-component water grouting material（FS）,which is mainly composed of fly ash and additives,and the performance of the slurry was studied.Then,the parameters,such as final setting time,stone rate after 1 h,compressive strength and pumpability of material under the condition of the different water contents and dosage of additives were tested.Experimental results show that new dynamic water grouting material（FS） with the characteristics of rapid setting,early strength,micro expansion,high rate of stone,smaller strength is affected by water content,strong erosion resistance resisting dynamic water.And we put forward hierarchically combined grouting reinforcement technology by using material to dynamic water grouting treatment,and expound the principle and method of the technology.New grouting material（FS） and grouting technology was successful in Nanjing subway station,which verified that the materials technology was scientific and greatly reduced the management cost.it is significative to the grouting material and technical innovation.

关 键 词：地下工程 不良地质 碱激发地聚合物 动水注浆材料 性能参数 现场试验 

分 类 号：U94[交通运输工程]