Article(id=1322559830796128560, tenantId=1146029695717560320, journalId=1225396423026438145, issueId=1322559792544072145, articleNumber=null, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1737216000000, receivedDateStr=2025-01-19, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1793252435635, onlineDateStr=2026-10-29, pubDate=1769270400000, pubDateStr=2026-01-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793252435635, onlineIssueDateStr=2026-10-29, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793252435635, creator=13701087609, updateTime=1793252435635, updator=13701087609, issue=Issue{id=1322559792544072145, tenantId=1146029695717560320, journalId=1225396423026438145, year='2026', volume='46', issue='1', pageStart='1', pageEnd='306', issueExtLink='null', onlineDate='null', pubDate='1769270400000', pubDateStr='2026-01-25', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793252426515, creator='13701087609', updateTime=1793252675339, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1322560836246286849, tenantId=1146029695717560320, journalId=1225396423026438145, issueId=1322559792544072145, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1322560836246286850, tenantId=1146029695717560320, journalId=1225396423026438145, issueId=1322559792544072145, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=167, endPage=176, ext={EN=ArticleExt(id=1322559830942929201, articleId=1322559830796128560, tenantId=1146029695717560320, journalId=1225396423026438145, language=EN, title=Study on Two-Dimensional Seepage Diffusion of MICP-Reinforced Sandy Soil Media Considering Multiple Rounds of Grouting, columnId=null, journalTitle=Mining Research and Development, columnName=null, runingTitle=null, highlight=null, articleAbstract=

Microbially Induced Carbonate Precipitation (MICP) technology shows remarkable potential in tailings pond ecological reinforcement projects due to its environmental friendliness and sustainability characteristics. However, the quantitative study of seepage diffusion during microbial grouting remains a key constraint to its application. Aiming at multi-round microbial grouting reinforcement scenarios and systematically considering the synergistic effect of the sandy soil medium on the slurry diffusion behaviour during the dynamic attenuation of permeability coefficient and the evolution of porosity gradient, a permeability diffusion radius prediction model based on the column diffusion theory was constructed by combining the multi-scale tests and theoretical modelling with a combination of one-dimensional sand column experiments, intermediate-scale 2D planar physical model experiments, and FLAC3D numerical simulations of coupled flow and solidity. The results are concluded as follows. The vertical dimension is dominated by gravity effect, and the slurry diffusion shows significant asymmetry, forming a pagoda-like distribution with the bottom wide and the top narrow, and the final diffusion radius at the bottom is 3.91 times of the diffusion radius at the top. The horizontal dimension follows the radial attenuation law of diffusion effect, and the reinforcement strength is inversely proportional to the centre distance of the slurry injection pipe. Validation of the theoretical model shows that the relative errors between the maximum diffusion radius and the predicted value for the 2nd to 5th rounds of grouting were 43.89%-63.72%, and the error ranges were within reasonable limits. The research results can provides a quantitative theoretical framework for the optimisation of MICP process parameters and engineering-scale diffusion prediction.

, authors=Zhijun ZHANG^{1, 2}, Bingzheng LIU^{1, 2}, Huaimiao ZHENG^{2, 3}, Yakun TIAN^{1, 2}, Lin HU^{1, 2}, Lingling WU^{1, 2}, authorsList=Zhijun ZHANG, Bingzheng LIU, Huaimiao ZHENG, Yakun TIAN, Lin HU, Lingling WU, authorCompany=null, correspAuthors=Lingling WU, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1322559831182004530, articleId=1322559830796128560, tenantId=1146029695717560320, journalId=1225396423026438145, language=CN, title=考虑多轮注浆下MICP加固砂土介质的二维渗流扩散研究, columnId=1226462295417598973, journalTitle=矿业研究与开发, columnName=矿山安全与环保, runingTitle=null, highlight=null, articleAbstract=

微生物诱导碳酸钙沉淀（Microbially Induced Carbonate Precipitation, MICP）技术因其具有环境友好性与可持续性特征，在尾矿库生态加固工程中展现出显著潜力。然而，微生物注浆过程中渗流扩散的定量化研究仍是制约其应用的关键。针对多轮微生物注浆加固场景，系统考虑砂土介质在渗透系数动态衰减与孔隙率梯度演化过程中对浆液扩散行为的协同作用，通过多尺度试验与理论建模相结合的方式，综合一维砂柱试验、中等尺度二维平面物理模型试验及FLAC3D流固耦合数值模拟，构建了基于柱形扩散理论的渗透扩散半径预测模型。结果表明：垂直维度受重力效应主导，浆液扩散呈现显著非对称性，形成下宽上窄的类宝塔形分布，最终底部扩散半径为顶部扩散半径的3.91倍；水平维度则遵循扩散效果径向衰减规律，加固强度与注浆管中心距呈反比。理论模型验证显示，第2~5轮注浆最大扩散半径与预测值的相对误差范围为43.89%~63.72%，误差范围在合理范围之内。研究结果可为MICP工艺参数优化及工程尺度扩散预测提供定量化理论框架。

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张志军（1978—），男，河北邢台人，博士，教授，主要研究方向为矿山岩土工程灾害预测与控制。E-mail:zzj181@163.com

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张志军（1978—），男，河北邢台人，博士，教授，主要研究方向为矿山岩土工程灾害预测与控制。E-mail:zzj181@163.com

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