(1. 北京科技大学 土木与资源工程学院，北京 100083；
2. 北京联合大学 北京市信息服务工程重点试验室，北京 100101；
3. 中国恩菲工程技术有限公司 恩菲研究院，北京 100038)
摘 要: 为了改善高浓度充填料浆的流变特性，降低充填系统中堵管现象发生的概率，将超声波非接触性地作用于充填料浆。采用高精度Brookfield R/S-SST软固体测试仪，通过试验检测得到超声波作用下不同浓度、不同灰砂比全尾砂充填料浆的流变参数。结果表明：超声波可以显著改善充填料浆的流变特性，降低充填料浆的塑性黏度和屈服应力，超声对料浆黏度值的降低效果可达4.32%~39.33%，对料浆屈服应力的减小效果可达9.66%~34.27%。同时，借助支持向量机建立充填料浆流变参数预测模型。所得预测模型校验结果显示，该模型精度较高，具有较强的泛化能力，实现了功率超声条件下充填料浆流变参数的预测。
关键字: 超声波；充填料浆；流变参数；支持向量机
（1. School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China;
2. Beijing Key Laboratory of Information Service Engineering, Beijing Union University, Beijing 100101, China;
3. China Enfi Engineering Crop., Enfi Research Institute, Beijing 100038, China）
Abstract:In order to improve the rheological properties of the high-concentration backfill slurry and reduce the probability plugging phenomenon occurred of backfilling system, the innovative non-contact effect of ultrasound on the backfilling slurry was studied. Using high-precision brookfield R/S-SST soft solid tester, the rheological parameters with different concentrations and different lime-sand ratios were obtained under different ultrasonic powers of backfill slurry. The results show that ultrasonic waves can significantly improve the rheological properties and reduce the plastic viscosity and yield stress of the backfilling slurry. The viscosity of backfill slurry can be reduced by ultrasonic waves from 4.32% to 39.33%, and the yield stress can be reduced from9.66% to 34.27%. At the same time, the prediction model of rheological parameters of backfilling slurry was established by using support vector machine. The results of the prediction model show that the model has high precision and strong generalization ability. The prediction of rheological parameters of backfilling slurry under ultrasonic is realized.
Key words: ultrasonic wave; backfill slurry; rheological parameters; support vector machine
