基于兼性厌氧菌MICP技术的尾砂再造充填体试验研究

doi:10.12068/j.issn.1005-3026.2022.09.015

东北大学学报（自然科学版） ›› 2022, Vol. 43 ›› Issue (9): 1322-1328.DOI: 10.12068/j.issn.1005-3026.2022.09.015

基于兼性厌氧菌MICP技术的尾砂再造充填体试验研究

金长宇，冯庆杰，王强

(东北大学资源与土木工程学院，辽宁沈阳110819)

发布日期:2022-09-16
通讯作者: 金长宇
作者简介:金长宇(1979-)，男，辽宁鞍山人，东北大学教授，博士生导师.
基金资助:
中央高校基本科研业务费专项资金资助项目(N2101041).

Experimental Study on Tailings Reconstructed Backfill Based on Facultative Anaerobic Bacteria MICP Technology

JIN Chang-yu， FENG Qing-jie， WANG Qiang

School of Resources & Civil Engineering， Northeastern University， Shenyang 110819， China.

Published:2022-09-16
Contact: FENG Qing-jie
About author:-
Supported by:
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摘要/Abstract

摘要： 提出一种利用微生物诱导碳酸钙沉淀(MICP)技术的胶结尾砂方法，利用兼性厌氧菌在密封养护条件下胶结尾砂，解决利用好氧菌无法在缺氧或无氧环境下使用的问题.采用控制变量法对利用兼性厌氧菌MICP技术胶结尾砂试验的影响因素进行探究，研究了菌液浓度、胶结溶液浓度、尾砂粒径和养护温度对胶结效果的影响.结果表明:当菌液的OD₆₀₀为1、胶结溶液中醋酸根离子浓度为0.6mol/L、尾砂为多种不同粒径的尾砂混合体、养护温度为30℃时，胶结效果最佳；兼性厌氧菌的MICP技术具有胶结尾砂的潜力，为替代水泥作为尾砂胶结材料提供了有效途径.

关键词: 兼性厌氧菌；诱导；碳酸钙；尾砂；充填体

Abstract: A tailing gluing method based on microbial induced calcium carbonate precipitation(MICP)technology was presented. Facultative anaerobic bacteria was used to glue tailing in sealed curing conditions， aiming to solve the problem that aerobic bacteria cannot be used in anoxia or anaerobic environment. The control variable method was used to explore the influencing factors of facultative anaerobic bacteria MICP technology in glue tailing test， in which four influencing factors were studied， namely the concentration of bacteria solution， the concentration of cementing solution， the particle size of tailing and the curing temperature. The results show that when the OD₆₀₀ of the bacterial liquid is 1， and the concentration of acetate ion in the cementing solution is 0.6mol/L， the tailings is a mixture of tailings with various particle sizes， and when the curing temperature is 30℃， the cementing effect is best. It is found that the MICP technology of facultative anaerobic bacteria can effectively cementing tailings， which provides a solution for replacing cement by tailings cementing material.

Key words: facultative anaerobic bacteria; induce; calcium carbonate; tailing; backfill

中图分类号:

TP20

金长宇，冯庆杰，王强. 基于兼性厌氧菌MICP技术的尾砂再造充填体试验研究[J]. 东北大学学报（自然科学版）, 2022, 43(9): 1322-1328.

JIN Chang-yu， FENG Qing-jie， WANG Qiang. Experimental Study on Tailings Reconstructed Backfill Based on Facultative Anaerobic Bacteria MICP Technology[J]. Journal of Northeastern University(Natural Science), 2022, 43(9): 1322-1328.

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基于兼性厌氧菌MICP技术的尾砂再造充填体试验研究

Experimental Study on Tailings Reconstructed Backfill Based on Facultative Anaerobic Bacteria MICP Technology

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