基于压滤效应影响的废弃石粉-黏土浆液性能研究  

Study on the Properties of Waste Stone Powder-Clay Slurry Based on the Influence of Filtration Effect

作　　者：陈新明[1,2,3] 陈姣姣 刘晓辉 焦华喆 杨志[3,5] 杨柳华 CHEN Xinming;CHEN Jiaojiao;LIU Xiaohui;JIAO Huazhe;YANG Zhi;YANG Liuhua(School of Civil Engineering,Henan Polytechnic University,Jiaozuo 454150,Henan,China;Henan Key Laboratory of Green and Efficient Mining and Comprehensive Utilization of Mineral Resources,Henan Polytechnic University,Jiaozuo 454150,Henan,China;Collaborative Innovation Center for Safe Production and Clean and Efficient Utilization of Coal,Jiaozuo 454150,Henan,China;School of Safety Engineering,North China Institute of Science and Technology,Langfang 065000,Hebei,China;School of Civil and Resource Engineering,University of Science and Technology Beijing,Beijing 101407,China)

机构地区：[1]河南理工大学土木工程学院,河南焦作454150 [2]河南理工大学河南省矿产资源绿色高效开采与综合利用重点实验室,河南焦作454150 [3]煤炭安全生产与清洁高效利用省部共建协同创新中心,河南焦作454150 [4]华北科技学院安全工程学院,河北廊坊065000 [5]北京科技大学土木与资源工程学院,北京101407

出　　处：《材料导报》2025年第9期106-115,共10页Materials Reports

基　　金：山东省科技型中小型企业创新能力提升工程项目(2022TSG2077);国家自然科学基金(52074121)。

摘　　要：利用一种灌浆材料压滤效应模拟装置(FSD),开展对考虑灌浆压力、浆体流变、黏土灰分、浆液浓度和废弃石粉粒度组成(FSD影响因素)的浆液性能研究。结合FTIR、TG-DTG、SEM、EDS、AFM、ICP-AES和IC微观表征手段,解释其性能发展机理。受压滤效应影响,浆液碱性环境变强,活性颗粒数量增多,CaCO_(3)与黏粒晶体之间充分团聚,结晶程度增加;阳离子交换容量升高,钙硅铝基相和硅铝酸盐聚合体生成量增加。基体颗粒间表面水撑开晶层,塑性黏度和屈服应力降低。游离氧化钙减少,浆液硬化后固结收缩率均小于1%。水灰比减小,浆液灌入裂隙固结成模和间歇总时间缩短。单位体积内,团簇状聚合体结构物分散空间被压缩,Al^(3+)和Ca^(2+)的溶出率降低。在煤矿灌浆行业中使用废弃石粉和黏土,不仅可以降低项目成本,还可以减少水土流失和土污染。采用研究提出的最佳的浆液配比和灌浆压力进行试验,结果表明,浆液灌浆性能良好,可被考虑用于矿区岩溶裂隙带形式的充填。Agrouting material filter pressure effect simulation device(FSD)was used to study the performance of grout considering grouting pressure,slurry rheology,clay ash content,slurry concentration and particle size composition of waste stone powder(FSD influencing factors).Furthermore,using FTIR,TG-DTG,SEM,EDS,AFM,ICP-AES,and IC microscopic characterization methods,the mechanism of performance development were explained.After the pressure filtration effect,the alkaline environment of the slurry becomes stronger,the number of active particles increases,and CaCO_(3) fully agglomerates with clay crystals,increasing the degree of crystallization.The cation exchange capacity increases,and the amount of calcium silicon aluminum based phase and silicon aluminum salt aggregates generated increases.The surface water between the matrix particles expands the crystal layer,reducing the plastic viscosity and yield stress.Free calcium oxide decreases,and the conso-lidation shrinkage rate of the hardened slurry is less than 1%.The water cement ratio is reduced,and the grouting solution is injected into the cracks to solidify into the mold and shorten the total interval time.Within a unit volume,the dispersion space of clustered polymer structures is compressed,and the dissolution rates of Al ^(3+)and Ca ^(2+)decrease.The use of waste rock powder and clay in the coal mine grouting industry can not only reduce project costs,but also reduce soil erosion and pollution.Due to the optimal slurry ratio and grouting pressure which were proposed here,the experimental results show that the grouting performance of the slurry is good,so it can be considered for filling karst fracture zones in mining areas.

关 键 词：废弃石粉 黏土 灌浆浆液 压滤效应 灌浆性能 性能发展机理 

分 类 号：X751[环境科学与工程—环境工程]