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简要介绍了五阳矿选煤厂原工艺系统中捞坑跑粗的状况、原因，以及产生的后果。经过分析提出了改造方案，对改造后的效果进行了分析和对比。
This paper briefly introduces the status, causes and consequences of the pit scouring in the original process system of Wuyang Mine Coal Preparation Plant. After the analysis proposed transformation program, after the transformation of the results were analyzed and compared.