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煤体注水,不仅能有效地扼制尘源,降低煤尘含量,同时对于抑制瓦斯涌出、缓和工作面冲击地压、改善劳动条件等都起着积极、良好的作用。近二年来,我局的煤体注水降尘工作,也初步取得了效果。如夹河、庞庄、旗山、大黄山、义安等矿,回采工作面经过注水之后,降尘率普遍都达到了70%以上,有的甚至更高些。注水工艺方面,我们采用的是动、静压相结合,初始以动压为主的方式。动压泵是浙江奉化矿山机械厂生产的5D—2/150型
Water injection of coal not only can effectively curb the dust source and reduce the content of coal dust, at the same time, it plays a positive and good role in suppressing gas emission, alleviating the impact on the working face and improving the working conditions. In the past two years, the work of injecting water and dust by our bureau has also achieved initial success. Such as the folder River, Pang Zhuang, Qishan, Huangshan, Yian and other mines, mining face after water injection, the dust reduction rate generally reached more than 70%, and some even higher. Water injection process, we use is the combination of static and pressure, the initial dynamic-pressure-based approach. Dynamic pressure pump is Fenghua Mining Machinery Factory in Zhejiang Province 5D-2/150 type