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本文通过室内模拟试验及理论分析，探讨了煤矿井下弱胶结流砂层井下涌砂机制，试验结果对制订井下防治突水涌砂具有重要的实际意义，同时也为这方面的理论研究进行了有益的尝试。
In this paper, through in-house simulation and theoretical analysis, we discuss the mechanism of downhole sand blasting in the weak glued sand layer in coal mines. The results of the experiment have important practical significance for making downhole water inrush and gushing sand. At the same time, this paper also makes useful theoretical research in this area try.