| 磁处理对注浆用黏土浆液的改性作用 |
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| 引用本文： | 薛卫峰,王苏健,邓增社,黄克军,韩磊,冀瑞君,梁少剑.磁处理对注浆用黏土浆液的改性作用[J].煤田地质与勘探,2019,47(4):117-123. |
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| 作者姓名： | 薛卫峰 王苏健 邓增社 黄克军 韩磊 冀瑞君 梁少剑 |
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| 作者单位： | 西安科技大学地质与环境学院;陕西煤业化工技术研究院有限责任公司;煤炭绿色安全高效开采国家地方联合工程研究中心 |
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| 基金项目： | 国家重点基础研究发展计划（973计划）项目（2014CB047100） |
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| 摘 要： | 对黏土浆液进行磁化处理，研究磁化处理后黏土浆液的黏度、密度、pH值、电导率、析水率、结石率及抗渗性等物理性质变化特征。磁处理后，黏土浆液密度、黏度、析水率均减小，pH值、电导率、结石率增大，黏土浆液的析水率与结石率的改善效果随磁化时间的增长而增大，磁处理改善了浆液的流变性能，磁化后黏土浆液固结体的抗渗性能较未磁化黏土浆液固结体抗渗性能有了大幅提高。黏土浆液经磁化后Zeta电位值、pH值增大，使得其分散程度提高，从而降低了析水率，提高了结石率，同等质量黏土浆液抗渗性能的提高得益于磁处理后黏土浆液结石率的大幅增加，而其黏度的降低，是因磁处理后黏土浆液颗粒间有较强的排斥力导致。
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| 关 键 词： | 磁处理 黏土浆液 改性 结石率 抗渗性能 |
| 收稿时间： | 2018-10-18 |
Modification function of magnetic treatment on grouting clay slurry |
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| Abstract: | Clay slurry was treated through magnetization. The characteristics of the physical property change of the clay slurry after magnetic treatment such as viscosity, density, pH value, conductivity, syneresis rate, concretion rate and anti-permeability were studied. After magnetic treatment, density, viscosity and syneresis rate of the clay slurry decrease, pH, conductivity and concretion rate increase, the syneresis rate and the concretion rate are improved with the magnetization time. The magnetic treatment improves the rheological property of clay slurry, the anti-permeability performance of the cemented body of clay slurry after magnetic treatment rises greatly compared to the cemented body of clay slurry not treated by magnetization. After the magnetic treatment, the Zeta electrical potential and pH of the clay slurry increase, resulting in increase of dispersion, reducing the syneresis rate and increasing the concretion rate. The improvement of anti-permeability performance of the same quality clay slurry benefits from the significant increase of the concretion rate of the magnetically treated clay slurry, while the decrease of its viscosity results from the strong repulsion among the particles of clay slurry after the magnetic treatment. |
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