(1. 北京科技大學 土木與資源工程學院，北京 100083；
2. 北京聯(lián)合大學 北京市信息服務工程重點試驗室，北京 100101；
3. 中國恩菲工程技術(shù)有限公司 恩菲研究院，北京 100038)
摘 要: 為了改善高濃度充填料漿的流變特性，降低充填系統(tǒng)中堵管現(xiàn)象發(fā)生的概率，將超聲波非接觸性地作用于充填料漿。采用高精度Brookfield R/S-SST軟固體測試儀，通過試驗檢測得到超聲波作用下不同濃度、不同灰砂比全尾砂充填料漿的流變參數(shù)。結(jié)果表明：超聲波可以顯著改善充填料漿的流變特性，降低充填料漿的塑性黏度和屈服應力，超聲對料漿黏度值的降低效果可達4.32%~39.33%，對料漿屈服應力的減小效果可達9.66%~34.27%。同時，借助支持向量機建立充填料漿流變參數(shù)預測模型。所得預測模型校驗結(jié)果顯示，該模型精度較高，具有較強的泛化能力，實現(xiàn)了功率超聲條件下充填料漿流變參數(shù)的預測。
關鍵字: 超聲波；充填料漿；流變參數(shù)；支持向量機
（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
