煤层注水降低综采工作面煤尘浓度的研究

Study on Suppressing the Dust Concentration at Fully Mechanized Coal Face Using Water Injection

在深入研究官地矿９＃ 煤渗透特性的基础上，提出动压预注水的煤层注水方案与参数，并在官地矿进行了工业性试验，取得了降低综采工作面煤尘浓度６０％ 以上的明显效果。它对我国煤矿有效实施煤层注水。

Based on the study on the permeability of 9 # coal seam of GuanDi coal mine,a protocol and parameters for pressured water infusion into coal seam were proposed,and had been experimented at this mine.As a result,the coal dust concentration was reduced for more than 60%.It is meaningful for water infusion into coal seam and in suppression of the coal dust in underground pit in this country. Based on the study on the permeability of 9 # coal seam of GuanDi coal mine,a protocol and parameters for pressured water infusion into coal seam were proposed,and had been experimented at this mine.As a result,the coal dust concentration was reduced for more than 60%.It is meaningful for water infusion into coal seam and in suppression of the coal dust in underground pit in this country.