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为降低充填成本和使料浆制备系统可靠运转,基于特大型采空区充填工程对于二步骤矿柱开采的重要性,采用配比优化试验及统计分析所得的充填体长期强度预测模型,结合现场充填体地质钻探取样的检测强度,利用预测模型的变形公式,反算出采空区充填水泥实际用量,对设计与实际水泥用量的定量关系进行了分析,掌握了二者之间的偏差.结果表明:前期充填中水泥用量存在较大富余,52-8#和52-10#采场水泥用量分别偏大约60.28%,49.24%.随着充填站操作人员技术水平与熟练程度的提高,并通过对站内计量仪表和物料输送设备校验后,水泥用量的下调空间较大.
In order to reduce the cost of filling and make the slurry preparation system operate reliably, based on the importance of two-step pillar mining for extra-large goaf filling project, the long-term strength prediction model of filling body with matching optimization test and statistical analysis was used, Using the test intensity of the geologic drilling sample in the filling body and using the deformation formula of the prediction model, the actual amount of filling cement in the goaf is calculated and the quantitative relationship between the design and the actual cement consumption is analyzed, and the deviation between the two is obtained. : There was a big surplus of cement content in the pre-filling, while the 52-8 # and 52-10 # stopes were slightly over 60.28% and 49.24% respectively. With the improvement of the technical level and proficiency of filling station operators, Station meter and material handling equipment calibration, the amount of cement down a larger space.